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Find cheap flights from Idaho to the United States from $41

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
Sun 6/2
Sun 6/9

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In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

December

Cheapest flight

$41
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Boise to Seattle

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

5/28Tue
nonstopSpirit Airlines
1h 50mBOI-LAS
5/31Fri
nonstopSpirit Airlines
2h 05mLAS-BOI
$58
5/15Wed
nonstopSpirit Airlines
1h 49mBOI-LAS
5/21Tue
nonstopSpirit Airlines
2h 05mLAS-BOI
$59
5/18Sat
nonstop
1h 50mBOI-LAS
5/19Sun
nonstop
1h 55mLAS-BOI
$69
5/30Thu
nonstopAllegiant Air
1h 44mBOI-LAS
6/2Sun
nonstopAllegiant Air
1h 55mLAS-BOI
$75
7/11Thu
nonstopAllegiant Air
1h 52mBOI-LAS
7/14Sun
nonstopAllegiant Air
1h 53mLAS-BOI
$86
6/2Sun
nonstop
1h 44mBOI-LAS
6/2Sun
nonstop
2h 07mLAS-BOI
$112
5/28Tue
nonstopDelta
1h 14mGEG-SEA
6/4Tue
nonstopDelta
1h 07mSEA-GEG
$137
5/25Sat
nonstopDelta
1h 19mGEG-SEA
5/29Wed
nonstopDelta
1h 12mSEA-GEG
$147
5/28Tue
1 stopAlaska Airlines
3h 25mGEG-SEA
6/4Tue
nonstopAlaska Airlines
0h 59mSEA-GEG
$151
5/25Sat
1 stopAlaska Airlines
4h 08mGEG-SEA
5/29Wed
nonstopAlaska Airlines
0h 59mSEA-GEG
$156

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Recent one-way flight deals

6/4Tue
1 stopSpirit Airlines
12h 17mBOI-SEA
$41
5/29Wed
1 stopSpirit Airlines
15h 43mBOI-LAX
$43
7/7Sun
nonstopAllegiant Air
1h 52mBOI-LAS
$59
6/4Tue
nonstopDelta
1h 16mGEG-SEA
$69
6/4Tue
nonstopDelta
1h 19mGEG-SEA
$74
5/28Tue
nonstopAlaska Airlines
1h 31mBOI-SEA
$79
5/28Tue
1 stopAlaska Airlines
2h 48mGEG-SEA
$83
7/31Wed
1 stopUnited Airlines
6h 47mBOI-SEA
$93
8/17Sat
1 stopUnited Airlines
6h 47mBOI-SEA
$103
6/28Fri
2 stopsAllegiant Air
14h 03mBOI-LAS
$287

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Search by price

Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

5/7Tue
nonstopSpirit Airlines
1h 50mBOI-LAS
5/11Sat
nonstopSpirit Airlines
2h 04mLAS-BOI
$122
5/5Sun
nonstop
1h 49mBOI-LAS
5/11Sat
nonstop
2h 05mLAS-BOI
$123
5/8Wed
nonstopSpirit Airlines
1h 49mBOI-LAS
5/11Sat
nonstopSpirit Airlines
2h 04mLAS-BOI
$124
5/5Sun
nonstopAllegiant Air
1h 49mBOI-LAS
5/9Thu
nonstopAllegiant Air
1h 50mLAS-BOI
$130
5/7Tue
nonstopAlaska Airlines
2h 10mBOI-PHX
5/14Tue
multi-stopAlaska Airlines
7h 05mPHX-BOI
$248
5/7Tue
nonstopAlaska Airlines
2h 10mBOI-PHX
5/14Tue
nonstopAlaska Airlines
2h 09mPHX-BOI
$274
5/4Sat
nonstopAmerican Airlines
2h 34mGEG-PHX
5/14Tue
nonstopAmerican Airlines
2h 43mPHX-GEG
$300
5/5Sun
nonstopDelta
1h 46mBOI-SEA
5/16Thu
nonstopDelta
1h 36mSEA-BOI
$307
5/7Tue
multi-stopDelta
5h 31mBOI-PHX
5/9Thu
multi-stopDelta
7h 36mPHX-BOI
$308
5/4Sat
nonstopAmerican Airlines
2h 34mGEG-PHX
5/14Tue
nonstopAmerican Airlines
2h 39mPHX-GEG
$350

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Flights to the United States

Return flight deals:

United States - Idaho

Cabin classes:

$248
$325
$303
$50

Browse destinations:

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