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Find cheap flights from Idaho to the United States from $44

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 6/4. 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
Mon 6/17
Mon 6/24

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Good to know

Low season

January

High season

May

Cheapest flight

$44
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Boise to Phoenix Sky Harbor Airport

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

6/6Thu
nonstopSpirit Airlines
1h 56mBOI-LAS
6/8Sat
nonstopSpirit Airlines
1h 58mLAS-BOI
$61
6/6Thu
nonstopSpirit Airlines
1h 56mBOI-LAS
6/8Sat
nonstopSpirit Airlines
1h 58mLAS-BOI
$62
5/30Thu
nonstopAllegiant Air
1h 44mBOI-LAS
6/2Sun
nonstopAllegiant Air
1h 55mLAS-BOI
$75
6/15Sat
nonstop
1h 56mBOI-LAS
6/16Sun
nonstop
1h 53mLAS-BOI
$84
6/20Thu
nonstop
1h 49mBOI-LAS
6/25Tue
nonstop
1h 58mLAS-BOI
$85
7/11Thu
nonstopAllegiant Air
1h 52mBOI-LAS
7/14Sun
nonstopAllegiant Air
1h 53mLAS-BOI
$97
6/26Wed
nonstopDelta
1h 18mGEG-SEA
6/26Wed
nonstopDelta
1h 11mSEA-GEG
$137
8/27Tue
nonstopAlaska Airlines
1h 32mBOI-SEA
9/7Sat
nonstopAlaska Airlines
1h 23mSEA-BOI
$147
6/11Tue
nonstopAlaska Airlines
1h 11mGEG-SEA
6/15Sat
nonstopAlaska Airlines
1h 04mSEA-GEG
$147
9/17Tue
nonstopDelta
1h 41mBOI-SEA
10/16Wed
nonstopDelta
1h 29mSEA-BOI
$157

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Recent one-way flight deals

6/4Tue
1 stopSpirit Airlines
14h 34mBOI-PHX
$44
6/19Wed
1 stopSpirit Airlines
5h 57mBOI-LAX
$47
6/30Sun
nonstopAllegiant Air
1h 49mBOI-LAS
$66
5/23Thu
nonstopAllegiant Air
1h 44mBOI-LAS
$69
6/19Wed
nonstopDelta
1h 37mBOI-SEA
$79
6/22Sat
nonstopAlaska Airlines
1h 11mGEG-SEA
$79
6/15Sat
1 stopAlaska Airlines
5h 47mGEG-SEA
$85
6/15Sat
nonstopDelta
1h 43mBOI-SEA
$89
6/1Sat
nonstopAmerican Airlines
2h 09mBOI-PHX
$95
9/26Thu
nonstopAmerican Airlines
2h 11mBOI-PHX
$105

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Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

5/21Tue
nonstopSpirit Airlines
1h 50mBOI-LAS
5/24Fri
nonstopSpirit Airlines
2h 04mLAS-BOI
$143
5/18Sat
nonstopSpirit Airlines
1h 50mBOI-LAS
5/25Sat
nonstopSpirit Airlines
2h 04mLAS-BOI
$175
5/21Tue
nonstop
1h 50mBOI-LAS
5/24Fri
multi-stop
16h 23mLAS-BOI
$269
5/18Sat
nonstop
1h 50mBOI-LAS
5/19Sun
nonstop
1h 55mLAS-BOI
$270
5/21Tue
nonstopAlaska Airlines
2h 05mBOI-PHX
5/31Fri
nonstopAlaska Airlines
2h 09mPHX-BOI
$380
5/18Sat
nonstopAlaska Airlines
1h 29mBOI-SEA
5/30Thu
nonstopAlaska Airlines
1h 25mSEA-BOI
$382
5/22Wed
nonstopDelta
1h 20mGEG-SEA
5/24Fri
nonstopDelta
1h 06mSEA-GEG
$414
5/20Mon
multi-stopAmerican Airlines
4h 28mBOI-DEN
5/29Wed
multi-stopAmerican Airlines
10h 51mDEN-BOI
$442
5/20Mon
nonstopDelta
1h 16mGEG-SEA
5/27Mon
nonstopDelta
1h 12mSEA-GEG
$457
5/20Mon
nonstopAmerican Airlines
2h 10mBOI-PHX
5/22Wed
nonstopAmerican Airlines
2h 08mPHX-BOI
$584

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Flights to the United States

Return flight deals:

United States - Idaho

Cabin classes:

$248
$336
$303
$57

Browse destinations:

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