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GSP - ONT

$308 Find cheap flights from Greenville to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Greenville to Ontario departing on 7/11. 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
qui 7/11
qui 7/18

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Greenville to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Greenville to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Greenville to Ontario (GSP-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Greenville to Ontario 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
5:15 pm - 9:31 pmGSP-ONT
7h 16m1 stop
6:00 am - 4:01 pmONT-GSP
7h 01m1 stop
$318United Airlines
Find Deal
qua, ago 21 - seg, ago 26
4:40 pm - 12:45 amGSP-ONT
11h 05m2 stops
6:00 am - 4:01 pmONT-GSP
7h 01m1 stop
$323United Airlines
Find Deal
qua, ago 21 - seg, ago 26
7:00 am - 9:31 pmGSP-ONT
17h 31m1 stop
6:00 am - 4:01 pmONT-GSP
7h 01m1 stop
$359United Airlines
Find Deal
qui, set 19 - ter, set 24
6:56 am - 10:13 amGSP-ONT
6h 17m1 stop
11:23 am - 8:40 pmONT-GSP
6h 17m1 stop
$383Delta
Find Deal
sex, ago 2 - sex, ago 9
6:56 am - 10:13 amGSP-ONT
6h 17m1 stop
6:50 am - 4:10 pmONT-GSP
6h 20m1 stop
$386Delta
Find Deal
ter, ago 20 - ter, ago 27
5:45 am - 10:13 amGSP-ONT
7h 28m1 stop
6:00 am - 8:40 pmONT-GSP
11h 40m2 stops
$391Delta
Find Deal
ter, ago 20 - ter, ago 27
6:27 pm - 11:00 pmGSP-ONT
7h 33m1 stop
10:48 am - 10:00 pmONT-GSP
8h 12m1 stop
$400American Airlines
Find Deal
sex, jul 19 - ter, jul 23
4:06 pm - 11:00 pmGSP-ONT
9h 54m1 stop
7:18 pm - 8:10 amONT-GSP
9h 52m2 stops
$405American Airlines
Find Deal
sex, jul 19 - ter, jul 23
12:14 pm - 10:15 pmGSP-ONT
13h 01m2 stops
7:00 am - 9:53 pmONT-GSP
11h 53m2 stops
$676Alaska Airlines
Find Deal
qua, set 11 - dom, set 15
7:45 am - 7:25 pmGSP-ONT
14h 40m2 stops
6:00 am - 10:00 pmONT-GSP
13h 00m2 stops
$782Alaska Airlines
Find Deal
qua, jul 10 - qua, jul 17

Flights from Greenville to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Greenville to Ontario 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 Greenville to Ontario?

The average price of all flights from Greenville to Ontario clicked on KAYAK for each day over the last 12 months.
When flying from Greenville to Ontario, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to Greenville, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Greenville to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Greenville to Ontario, 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 Greenville to Ontario is March, where tickets cost $367 on average. On the other hand, the most expensive months are November and May, where the average cost of tickets is $633 and $605 respectively.

Which airlines provide the cheapest flights from Greenville to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, United Airlines offered the best one-way deal for that route, at $308. KAYAK users also found Greenville to Ontario round-trip flights on United Airlines from $318 and on Delta from $383.

Good to know

Low season

January

High season

May

Cheapest flight

$308
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Greenville to Ontario

When to book flights from Greenville to Ontario

Are your dates flexible? Find out the best times to travel from Greenville to Ontario 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 Greenville to Ontario

  • What is the cheapest flight from Greenville to Ontario?

    In the last 3 days, the lowest price for a flight from Greenville to Ontario was $308 for a one-way ticket and $318 for a round-trip.

  • Do I need a passport to fly between Greenville and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Greenville to Ontario?

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

  • Which airline alliances offer flights from Greenville to Ontario?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Greenville and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Greenville to Ontario, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Greenville to Ontario are Delta and American Airlines. With an average price for the route of $570 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $461 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Greenville to Ontario?

    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 Greenville to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Greenville to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Greenville 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 Greenville to Ontario?

    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 Ontario with an airline and back to Greenville with another airline. Booking your flights between Greenville and ONT 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 Greenville to Ontario?

    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 Ontario from Greenville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Greenville to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Greenville to Ontario. 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 Greenville to Ontario? 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
DeltaOverall score based on 10277 reviews
7.9Comfort
7.4Food
8.6Crew
8.2Boarding
8.0Entertainment
Airline reviews

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

2.0 MediocreFelipe, Jun 2024DTW - SAN
Read more about Delta reviews

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

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Book cheap flights from Greenville to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Greenville to Ontario found on KAYAK in the last 72 hours.
7/11qui
2 stopsUnited Airlines
13h 28mGSP-ONT
$308
11/25seg
1 stopUnited Airlines
7h 37mGSP-ONT
$365
11/25seg
2 stopsUnited Airlines
16h 25mGSP-ONT
$426
6/28sex
1 stopAmerican Airlines
9h 55mGSP-ONT
$443
6/28sex
2 stopsAmerican Airlines
8h 45mGSP-ONT
$448

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Last minute flights from Greenville to Ontario

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 Greenville to Ontario that are departing in the next 10 days.
6/13qui
multi-stopUnited Airlines
12h 55mGSP-ONT
6/15sáb
multi-stopUnited Airlines
7h 11mONT-GSP
$893
6/13qui
multi-stopAmerican Airlines
6h 45mGSP-ONT
6/15sáb
multi-stopAmerican Airlines
6h 08mONT-GSP
$938
6/13qui
multi-stopAlaska Airlines
14h 55mGSP-ONT
6/15sáb
multi-stopAlaska Airlines
15h 31mONT-GSP
$2,543
6/14sex
multi-stopUnited Airlines
7h 19mGSP-ONT
6/16dom
multi-stopUnited Airlines
12h 55mONT-GSP
$3,924

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Greenville - Ontario Flights

Departure:

Greenville (GSP)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Greenville

Cabin classes: