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STL - PDX

$116 Find cheap flights from St. Louis to Portland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Portland departing on 6/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 7/10
Wed 7/17

Search hundreds of travel sites at once for deals on flights to Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Portland.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Portland.
In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Portland (STL-PDX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:29 pm - 3:20 pmSTL-PDX
21h 51m2 stops
5:41 pm - 10:42 amPDX-STL
15h 01m2 stops
$188Frontier
Find Deal
Tue, Jun 18 - Tue, Jun 25
7:29 pm - 2:59 pmSTL-PDX
21h 30m2 stops
5:41 pm - 10:42 amPDX-STL
15h 01m2 stops
$189Frontier
Find Deal
Wed, Jun 19 - Tue, Jun 25
7:29 pm - 2:59 pmSTL-PDX
21h 30m2 stops
5:41 pm - 10:42 amPDX-STL
15h 01m2 stops
$190Frontier
Find Deal
Wed, Jun 19 - Tue, Jun 25
6:29 am - 12:48 pmSTL-PDX
8h 19m1 stop
11:41 pm - 10:43 amPDX-STL
9h 02m1 stop
$212American Airlines
Find Deal
Tue, Jul 9 - Fri, Jul 12
4:00 pm - 9:53 pmSTL-PDX
7h 53m1 stop
5:22 pm - 12:55 amPDX-STL
5h 33m1 stop
$216Delta
Find Deal
Thu, Jul 4 - Wed, Jul 10
6:29 am - 12:48 pmSTL-PDX
8h 19m1 stop
12:59 am - 12:18 pmPDX-STL
9h 19m1 stop
$228American Airlines
Find Deal
Tue, Jul 30 - Mon, Aug 19
1:59 pm - 8:02 pmSTL-PDX
8h 03m1 stop
4:06 pm - 1:04 pmPDX-STL
18h 58m2 stops
$248Spirit Airlines
Find Deal
Sat, Sep 7 - Mon, Sep 9
3:23 pm - 10:56 pmSTL-PDX
33h 33m2 stops
3:46 pm - 3:06 pmPDX-STL
21h 20m1 stop
$261Spirit Airlines
Find Deal
Tue, Jul 9 - Tue, Jul 16
6:30 pm - 11:39 pmSTL-PDX
7h 09m1 stop
5:15 am - 5:34 pmPDX-STL
10h 19m2 stops
$265Delta
Find Deal
Mon, Aug 12 - Wed, Aug 21
7:32 pm - 11:44 pmSTL-PDX
6h 12m1 stop
5:00 am - 1:20 pmPDX-STL
6h 20m1 stop
$286Alaska Airlines
Find Deal
Tue, Jul 2 - Wed, Jul 10

Flights from St. Louis to Portland - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Portland to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Portland?

The average price of all flights from St. Louis to Portland clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to Portland, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Portland, Saturday is the cheapest day to fly and Monday is the most expensive.

What is the cheapest month to fly from St. Louis to Portland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Portland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Portland is September, where tickets cost $358 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is $475 and $475 respectively.

How far in advance should I book a flight from St. Louis to Portland?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Portland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Portland, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 10 days before departure.

Which airlines provide the cheapest flights from St. Louis to Portland?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to Portland found on KAYAK was with Frontier for $123. Frontier proposed a round-trip connection from $188 and American Airlines from $212.

How many flights are there between St. Louis and Portland per day?

There is a maximum of 1 nonstop flight a day that takes off from St. Louis and lands in Portland, with an average flight time of 4h 10m. The most common departure time is 1:00 pm and most flights take off in the afternoon. Each week, there are 2 flights.

What’s the earliest departure time from St. Louis to Portland?

Early birds can take the earliest flight from St. Louis at 1:50 pm and will be landing in Portland at 4:00 pm.

What’s the latest departure time from St. Louis to Portland?

If you prefer to fly at night, the latest flight from St. Louis to Portland jets off at 2:20 pm and lands at 4:30 pm.

Good to know

Low season

January

High season

July

Cheapest flight

$116
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from St. Louis to Portland

When to book flights from St. Louis to Portland

Are your dates flexible? Find out the best times to travel from St. Louis to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Portland

  • What are the transport options from Portland International Airport?

    The easiest way to get downtown is by taking the light rail. PDX is connected to the city by the MAX light rail system, and the Red Line trains depart every 15min. You can also take the shuttle from PDX with several companies offering door-to-door and inter-city shuttle services from PDX. Taxis are also available on the lower roadway around baggage claim, and no reservations are needed. Car rentals are available too, and most companies provide shuttle services from the baggage claim area to the offsite car rental station on the lower roadway.

  • Does Portland International Airport offer accessible services?

    The airport has provided elevators and ramps for passengers in wheelchairs. People with limited mobility also get reserved parking spots, accessible restrooms, fast track services, and dedicated seating areas. Aira services are available for low-vision passengers traveling through PDX. They will also be allowed guide dogs, and braille signage, audio announcements, and tactile guide paths are provided to guide them through PDX. Visual paging is available for the hard of hearing, and TDD telephones are also present at PDX.

  • Which airlines have lounges at Portland International Airport?

    Alaska Airlines, United Airlines, and Delta have lounges at PDX. Delta runs the only members-only lounge at PDX, while the other two options you can access by paying at the door. To access these lounges, you must show your flight ticket and pay a one-time fee. The Delta lounge is on Concourse D airside, Alaska lounge is on Concourse C airside, and United Club is on Concourse E airside. The airport also has a USO lounge for active US military members landside on the mezzanine level.

  • Does Portland International Airport offer family services?

    PDX offers nursing rooms for mothers who are traveling with infants. The nursing rooms provide comfortable seating, fold-down tables, and power outlets. The PDX nursing facilities are airside near the south lobby and around Gate D2. The airport has also provided a children’s play area for passengers with older kids. The PDX play areas are two, and they are both airside around Gates C17 and D7.

  • What is the cheapest flight from St. Louis to Portland?

    In the last 3 days, the lowest price for a flight from St. Louis to Portland was $116 for a one-way ticket and $188 for a round-trip.

  • Do I need a passport to fly between St. Louis and Portland?

    No

  • Which airports will I be using when flying from St. Louis to Portland?

    St. Louis and Portland are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Portland.

  • Which aircraft models fly most regularly from St. Louis to Portland?

    We unfortunately don’t have that data for this specific route.

  • On which days can I fly direct from St. Louis to Portland?

    You can catch a nonstop flight from St. Louis to Portland on on Saturday, and Sunday.

  • Which is the best airline for flights from St. Louis to Portland, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Portland are Delta and Alaska Airlines. With an average price for the route of $408 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $397 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from St. Louis to Portland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Portland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Portland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Portland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PDX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Portland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from St. Louis to Portland

  • St. Louis Lambert International Airport (STL) comprises two terminals and five concourses, A to E. The airport has provided courtesy shuttles for inter-terminal transportation, which run every 5-10min.
  • STL welcomes all pets to the airport. The airport has provided six relief areas: four indoors and two outdoors. The indoor areas are airside, and the outdoor areas are outside Terminal 2 and on the upper west side of Terminal 1.
  • Around 1,084 kg of carbon is emitted on flights from St. Louis to Portland. You can fly more sustainably with Frontier Airlines; they offer a flight emitting 60% less carbon per passenger.
  • Unwind after your flight with a holistic massage or facial at the Dragontree Spa at Portland International Airport (PDX). The spa is open between 9 am and 8 pm and is on Concourse C airside.
  • US Bank has a full-service branch at STL for those in need of banking or currency exchange services. The bank is open weekdays from 8 am to 5 pm and sits on the lower level of Terminal 1.
See more tips

Prefer to fly non-stop from St. Louis to Portland?

Find which airlines fly direct from Lambert-St Louis to Portland, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Portland

Monday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

Portland to Lambert-St Louis

Monday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Portland

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Portland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Portland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9254 reviews
7.3Food
8.6Crew
8.2Boarding
7.9Comfort
7.3Entertainment
Airline reviews

Everything was great but there were no entertainment options available.

6.0 GoodKyndra Homuth, Jun 2024SFO - PDX
Read more about Alaska Airlines reviews

Everything was great but there were no entertainment options available.

No prob with entertainment-would have selected n/a if it had been an option. No entertainment-flight was only a short hop. Great flight,

Loved the airport. The announcements for boarding were too loud & echoing in the large waiting area, so hard to follow. Other than that, we had a great experience.

Staff was very friendly. Flight was on time and arrived early. Flight was comfortable.

Easy and quick boarding. A bit of a hard landing at PDX

I think u could offer more than apple juice or water.

Pleasant crew and on time travel. It was all good.

It was ok. Alaska was adequate. Efficient and what I paid for it was fair. The boarding area at the gate was a joke. By the time they get past the C boarding group people all line up impatiently and then it’s chaos. We were boarding early then we sat on the tarmac for 30 minutes. I would of rather sat in the airport.

The entire flight was terrible. I recently had neurocervical surgery, and I needed a wheelchair to get to the gate. They were wonderful, truly. The flight staff was lovely, as well. Despite the need for assistance, I was put in the middle seat in the last row in front of the toilets. It was "policy" that I couldn't be moved. The pain I felt after the flight was astromnomical. The flight was so WARM, I was sweating, and the "air" did nothing to the stuffy feeling. The seats were uncomfortable, the plane itself was in bad/worn condition (although very clean - thanks to the staff) - and the flight was definitely rocky (not the pilot's fault, of course). All in all - one of the worst flights I've ever taken. The humans were wonderful!! You have a really great team. But your flight policies and your plane are absymal. For what you charge, you need to upgrade your plane and your policies.

First flights on Alaska Air, and I will go out of my way to fly them whenever I can in the future. An incredible experience, above and beyond any other airline.

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the price of premium class ticket paid, felt more like steerage.

Paid for premium economy had no tv the whole time the crew tried to reset/reboot but would not work they said they would put a trouble ticket in for it. We had 3 seats my tv was the only one that didn't work. They cancelled our flight re worked us on another that left us at airport over night on the floor I have a ten year old and a 78 diabetic mother which also had shingles and suffers from nerve pain in legs and back. Requested wheelchair service at all airports after the re route NO wheelchair service was there to help. WORST experience we have ever had. Went to American airlines assistance it was closed. I AM FURIOUS!!! I expect some sort of compensation from this traumatic experience and no need for flying points we don't plan on using American airlines again!!!!

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

Book cheap flights from St. Louis to Portland

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Portland found on KAYAK in the last 72 hours.
6/22Sat
2 stops
12h 38mSTL-PDX
$116
7/10Wed
2 stops
12h 41mSTL-PDX
$121
6/26Wed
1 stopFrontier
13h 48mSTL-PDX
$123
6/28Fri
1 stopFrontier
28h 13mSTL-PDX
$124
6/28Fri
2 stopsFrontier
23h 51mSTL-PDX
$129
7/16Tue
2 stopsSpirit Airlines
14h 45mSTL-PDX
$137
7/1Mon
2 stops
12h 38mSTL-PDX
$139
6/26Wed
2 stopsSpirit Airlines
20h 54mSTL-PDX
$148
7/13Sat
2 stopsUnited Airlines
8h 58mSTL-PDX
$339
6/21Fri
3 stopsUnited Airlines
16h 33mSTL-PDX
$638

Search by stops

Search by airline

Search by price

Last minute flights from St. Louis to Portland

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Portland that are departing in the next 10 days.
6/14Fri
multi-stopFrontier
10h 36mSTL-PDX
6/25Tue
multi-stopFrontier
11h 37mPDX-STL
$178
6/14Fri
multi-stopFrontier
10h 36mSTL-PDX
6/25Tue
multi-stopFrontier
11h 37mPDX-STL
$218
6/11Tue
multi-stopAmerican Airlines
6h 52mSTL-PDX
6/15Sat
multi-stopAmerican Airlines
8h 50mPDX-STL
$277
6/15Sat
multi-stopAmerican Airlines
8h 13mSTL-PDX
6/20Thu
multi-stopAmerican Airlines
7h 36mPDX-STL
$280
6/11Tue
multi-stopDelta
7h 27mSTL-PDX
6/12Wed
multi-stopDelta
8h 05mPDX-STL
$297
6/12Wed
multi-stopDelta
6h 34mSTL-PDX
6/12Wed
multi-stopDelta
8h 05mPDX-STL
$378
6/15Sat
multi-stopAlaska Airlines
7h 18mSTL-PDX
6/19Wed
multi-stopAlaska Airlines
6h 20mPDX-STL
$405
6/12Wed
multi-stopUnited Airlines
7h 51mSTL-PDX
6/13Thu
multi-stopUnited Airlines
5h 49mPDX-STL
$408
6/14Fri
multi-stopAlaska Airlines
6h 12mSTL-PDX
6/19Wed
multi-stopAlaska Airlines
6h 20mPDX-STL
$452
6/12Wed
multi-stopUnited Airlines
7h 51mSTL-PDX
6/17Mon
multi-stopUnited Airlines
10h 07mPDX-STL
$488

Search by stops

Search by airline

Search by price

St. Louis - Portland Flights

Departure:

St. Louis (STL)United States

Destination:

Portland (PDX)United States

Return flight deals:

Portland - St. Louis

Cabin classes: