Find flights
When to book
FAQs & Tips
Deals

Find cheap flights from Idaho to the United States from $42

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho to the United States departing on 5/28. 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
jue. 6/13
jue. 6/20

Search hundreds of travel sites at once for deals on flights to the United States

In the last 7 days travelers have searched 42,566,405 times on KAYAK, and here is why:

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

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

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

Good to know

Low season

January

High season

May

Cheapest flight

$42
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Boise to Los Angeles

FAQs for booking flights from Idaho to the United States

  • How does KAYAK find such low prices on flights from Idaho to the United States?

    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 Idaho to the United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United States from Idaho 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 Idaho to the United States?

    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 the United States with an airline and back to Idaho with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho to the United States?

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

See more FAQs

Book cheap flights from Idaho to the United States

Recent round-trip flight deals

6/15sáb.
nonstopSpirit Airlines
1h 55mBOI-LAS
6/15sáb.
nonstopSpirit Airlines
1h 58mLAS-BOI
$62
6/6jue.
nonstopSpirit Airlines
1h 56mBOI-LAS
6/8sáb.
nonstopSpirit Airlines
1h 58mLAS-BOI
$65
6/11mar.
nonstop
1h 56mBOI-LAS
6/13jue.
nonstop
1h 53mLAS-BOI
$71
5/30jue.
nonstopAllegiant Air
1h 44mBOI-LAS
6/2dom.
nonstopAllegiant Air
1h 55mLAS-BOI
$75
6/20jue.
nonstop
1h 49mBOI-LAS
6/25mar.
nonstop
1h 58mLAS-BOI
$85
6/9dom.
nonstopAllegiant Air
1h 49mBOI-LAS
6/16dom.
nonstopAllegiant Air
1h 53mLAS-BOI
$96
6/11mar.
nonstopAlaska Airlines
1h 09mGEG-SEA
6/12mié.
nonstopAlaska Airlines
1h 04mSEA-GEG
$137
6/11mar.
1 stopAlaska Airlines
3h 31mGEG-SEA
6/12mié.
nonstopAlaska Airlines
1h 04mSEA-GEG
$156
6/5mié.
nonstopDelta
1h 17mGEG-SEA
6/10lun.
nonstopDelta
1h 11mSEA-GEG
$157
6/5mié.
nonstopDelta
1h 32mBOI-SEA
6/8sáb.
nonstopDelta
1h 30mSEA-BOI
$167

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/28mar.
1 stopSpirit Airlines
5h 04mBOI-LAX
$42
6/13jue.
nonstopSpirit Airlines
1h 54mBOI-LAS
$44
6/16dom.
nonstopAllegiant Air
1h 49mBOI-LAS
$49
6/11mar.
nonstopDelta
1h 18mGEG-SEA
$69
6/12mié.
nonstopDelta
1h 36mBOI-SEA
$79
6/20jue.
1 stop
5h 36mBOI-LAX
$79
7/11jue.
1 stop
5h 27mBOI-LAX
$82
6/8sáb.
1 stopAlaska Airlines
4h 08mGEG-SEA
$88
6/8sáb.
nonstopAlaska Airlines
1h 29mBOI-SEA
$89
5/23jue.
2 stopsAllegiant Air
19h 51mBOI-PHX
$246

Search by stops

Search by airline

Search by price

Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

5/16jue.
nonstopSpirit Airlines
1h 49mBOI-LAS
5/21mar.
nonstopSpirit Airlines
2h 04mLAS-BOI
$130
5/17vie.
nonstopSpirit Airlines
1h 53mBOI-LAS
5/22mié.
nonstopSpirit Airlines
2h 07mLAS-BOI
$142
5/17vie.
nonstop
1h 53mBOI-LAS
5/19dom.
nonstop
1h 55mLAS-BOI
$172
5/15mié.
nonstop
1h 49mBOI-LAS
5/19dom.
nonstop
1h 55mLAS-BOI
$180
5/18sáb.
multi-stopDelta
8h 02mBOI-PHX
5/21mar.
multi-stopDelta
6h 08mPHX-BOI
$258
5/18sáb.
nonstopAlaska Airlines
2h 05mBOI-PHX
5/21mar.
nonstopAlaska Airlines
2h 09mPHX-BOI
$309
5/18sáb.
multi-stopAlaska Airlines
7h 40mBOI-PHX
5/21mar.
nonstopAlaska Airlines
2h 09mPHX-BOI
$318
5/15mié.
multi-stopDelta
6h 55mGEG-PHX
5/22mié.
multi-stopDelta
6h 15mPHX-GEG
$319
5/18sáb.
nonstopAmerican Airlines
2h 36mGEG-PHX
5/28mar.
nonstopAmerican Airlines
2h 43mPHX-GEG
$368
5/18sáb.
nonstopAmerican Airlines
2h 36mGEG-PHX
5/19dom.
nonstopAmerican Airlines
2h 39mPHX-GEG
$500

Search by stops

Search by airline

Search by price

Flights to the United States

Return flight deals:

United States - Idaho

Cabin classes:

$248
$336
$303
$57

Browse destinations:

View more