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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
화 6/18
화 6/25

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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

6/2
nonstopSpirit Airlines
1h 50mBOI-LAS
6/5
nonstopSpirit Airlines
1h 58mLAS-BOI
$59
6/6
nonstopSpirit Airlines
1h 56mBOI-LAS
6/12
nonstopSpirit Airlines
2h 00mLAS-BOI
$61
5/30
nonstopAllegiant Air
1h 44mBOI-LAS
6/2
nonstopAllegiant Air
1h 55mLAS-BOI
$75
6/15
nonstop
1h 56mBOI-LAS
6/16
nonstop
1h 53mLAS-BOI
$84
6/20
nonstop
1h 49mBOI-LAS
6/25
nonstop
1h 58mLAS-BOI
$85
6/16
nonstopAllegiant Air
1h 49mBOI-LAS
6/23
nonstopAllegiant Air
1h 53mLAS-BOI
$106
9/4
nonstopAlaska Airlines
1h 32mBOI-SEA
9/10
nonstopAlaska Airlines
1h 23mSEA-BOI
$137
6/11
nonstopDelta
1h 16mGEG-SEA
6/12
nonstopDelta
1h 08mSEA-GEG
$137
8/27
nonstopAlaska Airlines
1h 32mBOI-SEA
9/7
nonstopAlaska Airlines
1h 23mSEA-BOI
$147
9/17
nonstopDelta
1h 41mBOI-SEA
10/16
nonstopDelta
1h 29mSEA-BOI
$157

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Recent one-way flight deals

6/4
1 stopSpirit Airlines
14h 34mBOI-PHX
$44
6/18
1 stopSpirit Airlines
12h 19mBOI-SEA
$47
7/4
nonstopAllegiant Air
1h 52mBOI-LAS
$49
7/11
nonstopAllegiant Air
1h 52mBOI-LAS
$59
6/18
nonstopAlaska Airlines
1h 11mGEG-SEA
$69
6/22
nonstopAlaska Airlines
1h 11mGEG-SEA
$79
6/18
nonstopDelta
1h 31mBOI-SEA
$79
7/11
1 stop
5h 27mBOI-LAX
$87
6/9
1 stop
25h 32mBOI-LAX
$93
7/17
1 stopDelta
4h 55mBOI-DEN
$98

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Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

5/23
nonstop
1h 44mBOI-LAS
5/25
nonstop
2h 05mLAS-BOI
$124
5/21
nonstopSpirit Airlines
1h 49mBOI-LAS
5/25
nonstopSpirit Airlines
2h 05mLAS-BOI
$137
5/23
nonstopAlaska Airlines
1h 29mBOI-SEA
6/3
nonstopAlaska Airlines
1h 25mSEA-BOI
$347
5/23
nonstopAlaska Airlines
1h 27mBOI-SEA
6/4
multi-stopAlaska Airlines
3h 07mSEA-BOI
$356
5/23
nonstopDelta
1h 40mBOI-SEA
5/28
nonstopDelta
1h 32mSEA-BOI
$397
5/24
nonstopUnited Airlines
1h 59mBOI-DEN
6/11
nonstopUnited Airlines
2h 07mDEN-BOI
$429
5/24
multi-stopDelta
6h 37mBOI-DEN
6/11
multi-stopDelta
3h 50mDEN-BOI
$433
5/21
nonstopAmerican Airlines
2h 10mBOI-PHX
5/22
nonstopAmerican Airlines
2h 08mPHX-BOI
$441
5/22
nonstopUnited Airlines
1h 57mBOI-DEN
6/1
nonstopUnited Airlines
1h 55mDEN-BOI
$446
5/24
multi-stopAmerican Airlines
10h 50mBOI-DEN
5/31
multi-stopAmerican Airlines
4h 39mDEN-BOI
$498

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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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