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Find cheap flights from Idaho to the United States from $39

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 5/17. 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
Mon 6/3
Mon 6/10

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Good to know

Low season

January

High season

December

Cheapest flight

$39
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 11% 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

6/8Sat
nonstopSpirit Airlines
1h 56mBOI-LAS
6/10Mon
nonstopSpirit Airlines
1h 59mLAS-BOI
$65
5/17Fri
nonstopSpirit Airlines
1h 50mBOI-LAS
6/8Sat
nonstopSpirit Airlines
1h 58mLAS-BOI
$66
5/18Sat
nonstop
1h 50mBOI-LAS
5/19Sun
nonstop
1h 55mLAS-BOI
$69
6/5Wed
nonstop
1h 56mBOI-LAS
6/13Thu
nonstop
1h 53mLAS-BOI
$71
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
5/25Sat
nonstopDelta
1h 19mGEG-SEA
5/29Wed
nonstopDelta
1h 12mSEA-GEG
$147
5/25Sat
1 stopAlaska Airlines
4h 08mGEG-SEA
5/29Wed
nonstopAlaska Airlines
0h 59mSEA-GEG
$156
5/28Tue
nonstopAlaska Airlines
1h 31mBOI-SEA
6/4Tue
nonstopAlaska Airlines
1h 30mSEA-BOI
$157
5/29Wed
nonstopDelta
1h 34mBOI-SEA
6/1Sat
nonstopDelta
1h 29mSEA-BOI
$167

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Recent one-way flight deals

5/17Fri
nonstopSpirit Airlines
1h 50mBOI-LAS
$39
6/6Thu
nonstopSpirit Airlines
1h 56mBOI-LAS
$40
7/7Sun
nonstopAllegiant Air
1h 52mBOI-LAS
$59
6/4Tue
nonstopDelta
1h 16mGEG-SEA
$69
6/1Sat
nonstopDelta
1h 15mGEG-SEA
$79
5/28Tue
nonstopAlaska Airlines
1h 31mBOI-SEA
$79
6/4Tue
1 stopAlaska Airlines
5h 19mGEG-SEA
$83
6/9Sun
nonstopSun Country Air
2h 52mGEG-MSP
$83
6/6Thu
1 stopSun Country Air
14h 15mGEG-DFW
$125
6/28Fri
2 stopsAllegiant Air
14h 03mBOI-LAS
$287

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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
5/8Wed
nonstopSpirit Airlines
1h 49mBOI-LAS
5/11Sat
nonstopSpirit Airlines
2h 05mLAS-BOI
$124
5/9Thu
nonstop
1h 49mBOI-LAS
6/9Sun
nonstop
1h 58mLAS-BOI
$142
5/9Thu
nonstopAllegiant Air
1h 49mBOI-LAS
5/12Sun
nonstopAllegiant Air
1h 50mLAS-BOI
$155
5/9Thu
nonstopAllegiant Air
1h 49mBOI-LAS
5/12Sun
nonstopAllegiant Air
1h 50mLAS-BOI
$159
5/5Sun
nonstop
1h 49mBOI-LAS
5/8Wed
nonstop
2h 07mLAS-BOI
$205
5/9Thu
nonstopAlaska Airlines
1h 08mGEG-SEA
6/10Mon
nonstopAlaska Airlines
1h 04mSEA-GEG
$252
5/9Thu
nonstopAlaska Airlines
1h 08mGEG-SEA
6/10Mon
multi-stopAlaska Airlines
2h 47mSEA-GEG
$261
5/9Thu
nonstopDelta
1h 20mGEG-SEA
5/11Sat
nonstopDelta
1h 14mSEA-GEG
$327
5/9Thu
multi-stopDelta
3h 49mBOI-LAS
5/11Sat
multi-stopDelta
6h 41mLAS-BOI
$348

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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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