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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 6/2. 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
Sa 6/15
Sa 6/22

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Good to know

Low season

January

High season

May

Cheapest flight

$39
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 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

6/2So
nonstopSpirit Airlines
1h 49mBOI-LAS
6/5Mi
nonstopSpirit Airlines
2h 00mLAS-BOI
$59
6/6Do
nonstopSpirit Airlines
1h 56mBOI-LAS
6/8Sa
nonstopSpirit Airlines
1h 58mLAS-BOI
$65
5/30Do
nonstopAllegiant Air
1h 44mBOI-LAS
6/2So
nonstopAllegiant Air
1h 55mLAS-BOI
$75
6/19Mi
nonstop
1h 56mBOI-LAS
6/20Do
nonstop
1h 53mLAS-BOI
$76
6/20Do
nonstop
1h 49mBOI-LAS
6/25Di
nonstop
1h 58mLAS-BOI
$85
6/6Do
nonstopAllegiant Air
1h 49mBOI-LAS
6/13Do
nonstopAllegiant Air
1h 53mLAS-BOI
$87
6/12Mi
nonstopDelta
1h 17mGEG-SEA
6/19Mi
nonstopDelta
1h 08mSEA-GEG
$137
6/8Sa
nonstopAlaska Airlines
1h 07mGEG-SEA
6/12Mi
nonstopAlaska Airlines
1h 04mSEA-GEG
$147
6/12Mi
1 stopAlaska Airlines
5h 19mGEG-SEA
6/19Mi
nonstopAlaska Airlines
1h 08mSEA-GEG
$156
6/24Mo
nonstopDelta
1h 17mGEG-SEA
6/25Di
nonstopDelta
1h 08mSEA-GEG
$157

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Recent one-way flight deals

6/2So
nonstopSpirit Airlines
1h 49mBOI-LAS
$39
6/11Di
1 stopSpirit Airlines
12h 19mBOI-SEA
$41
5/23Do
nonstopAllegiant Air
1h 44mBOI-LAS
$49
6/20Do
nonstopAllegiant Air
1h 49mBOI-LAS
$55
6/18Di
nonstopAlaska Airlines
1h 12mGEG-SEA
$69
5/23Do
1 stop
7h 20mBOI-LAX
$77
6/12Mi
nonstopAlaska Airlines
1h 29mBOI-SEA
$79
6/15Sa
nonstopDelta
1h 17mGEG-SEA
$79
5/23Do
1 stop
7h 20mBOI-LAX
$81
6/17Mo
nonstopDelta
1h 44mBOI-SEA
$99

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Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

5/20Mo
nonstopSpirit Airlines
1h 50mBOI-LAS
5/22Mi
nonstopSpirit Airlines
2h 07mLAS-BOI
$176
5/17Fr
multi-stopSpirit Airlines
11h 46mBOI-LAX
5/28Di
multi-stopSpirit Airlines
20h 13mLAX-BOI
$212
5/17Fr
nonstop
1h 50mBOI-LAS
5/19So
nonstop
1h 55mLAS-BOI
$215
5/18Sa
nonstopAlaska Airlines
2h 05mBOI-PHX
5/21Di
multi-stopAlaska Airlines
6h 07mPHX-BOI
$248
5/18Sa
multi-stopAlaska Airlines
6h 37mBOI-PHX
5/21Di
multi-stopAlaska Airlines
7h 07mPHX-BOI
$258
5/18Sa
nonstop
1h 27mBOI-SEA
5/30Do
multi-stop
11h 45mSEA-BOI
$310
5/18Sa
nonstopAmerican Airlines
2h 36mGEG-PHX
5/21Di
nonstopAmerican Airlines
2h 43mPHX-GEG
$350
5/21Di
multi-stopDelta
6h 49mBOI-PHX
5/22Mi
multi-stopDelta
6h 51mPHX-BOI
$358
5/18Sa
multi-stopDelta
5h 13mGEG-PHX
5/21Di
multi-stopDelta
6h 15mPHX-GEG
$359
5/18Sa
nonstopAmerican Airlines
2h 36mGEG-PHX
5/18Sa
nonstopAmerican Airlines
2h 43mPHX-GEG
$402

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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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