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Find cheap flights from Idaho to the United States from $40

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 6/17. 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
Sat 6/29
Sat 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

June

Cheapest flight

$40
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Boise to Las Vegas

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

7/4Thu
nonstopSpirit Airlines
1h 54mBOI-LAS
7/9Tue
nonstopSpirit Airlines
1h 58mLAS-BOI
$65
6/13Thu
nonstopSpirit Airlines
1h 56mBOI-LAS
6/18Tue
nonstopSpirit Airlines
2h 01mLAS-BOI
$66
6/25Tue
nonstop
1h 54mBOI-LAS
6/27Thu
nonstop
1h 53mLAS-BOI
$68
6/20Thu
nonstop
1h 49mBOI-LAS
6/25Tue
nonstop
1h 58mLAS-BOI
$69
6/13Thu
nonstopAllegiant Air
1h 49mBOI-LAS
6/16Sun
nonstopAllegiant Air
1h 53mLAS-BOI
$75
6/13Thu
nonstopAllegiant Air
1h 49mBOI-LAS
6/16Sun
nonstopAllegiant Air
1h 53mLAS-BOI
$76
9/17Tue
nonstopDelta
1h 40mBOI-SEA
10/16Wed
nonstopDelta
1h 28mSEA-BOI
$137
8/24Sat
nonstopDelta
1h 19mGEG-SEA
9/11Wed
nonstopDelta
1h 09mSEA-GEG
$137
6/26Wed
nonstopAlaska Airlines
1h 12mGEG-SEA
6/26Wed
1 stopAlaska Airlines
3h 58mSEA-GEG
$151
9/17Tue
1 stopAlaska Airlines
3h 37mBOI-SEA
10/16Wed
nonstopAlaska Airlines
1h 23mSEA-BOI
$156

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Recent one-way flight deals

6/17Mon
nonstopSpirit Airlines
1h 56mBOI-LAS
$40
7/4Thu
nonstopSpirit Airlines
1h 54mBOI-LAS
$41
6/20Thu
nonstopAllegiant Air
1h 49mBOI-LAS
$47
6/16Sun
nonstopAllegiant Air
1h 49mBOI-LAS
$49
6/25Tue
nonstopDelta
1h 15mGEG-SEA
$69
6/16Sun
1 stop
7h 09mBOI-LAX
$74
6/16Sun
1 stop
7h 09mBOI-LAX
$76
9/2Mon
nonstopAlaska Airlines
1h 14mGEG-SEA
$79
6/26Wed
1 stopAlaska Airlines
5h 26mGEG-SEA
$88
8/30Fri
nonstopDelta
1h 16mGEG-SEA
$89

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Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

6/1Sat
nonstopSpirit Airlines
1h 50mBOI-LAS
6/11Tue
nonstopSpirit Airlines
1h 58mLAS-BOI
$123
6/1Sat
nonstopSpirit Airlines
1h 50mBOI-LAS
6/5Wed
nonstopSpirit Airlines
1h 58mLAS-BOI
$124
5/31Fri
nonstop
1h 50mBOI-LAS
6/2Sun
nonstop
1h 55mLAS-BOI
$188
5/31Fri
nonstop
1h 50mBOI-LAS
6/2Sun
nonstop
1h 55mLAS-BOI
$198
6/4Tue
nonstopAmerican Airlines
2h 36mGEG-PHX
6/11Tue
nonstopAmerican Airlines
2h 34mPHX-GEG
$236
6/4Tue
multi-stopDelta
6h 12mGEG-PHX
6/11Tue
multi-stopDelta
4h 52mPHX-GEG
$255
6/1Sat
nonstopAmerican Airlines
2h 36mGEG-PHX
6/11Tue
nonstopAmerican Airlines
2h 43mPHX-GEG
$343
6/1Sat
multi-stopAlaska Airlines
4h 30mGEG-PHX
6/11Tue
multi-stopAlaska Airlines
5h 47mPHX-GEG
$362
6/3Mon
nonstopAlaska Airlines
1h 32mBOI-SEA
6/7Fri
nonstopAlaska Airlines
1h 25mSEA-BOI
$432
5/31Fri
nonstopDelta
1h 33mBOI-SEA
6/3Mon
nonstopDelta
1h 33mSEA-BOI
$467

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Flights to the United States

Return flight deals:

United States - Idaho

Cabin classes:

$248
$336
$303
$45

Browse destinations:

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