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Find cheap flights from Phoenix to Idaho from $43

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phoenix to Idaho departing on 7/30. 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
Tue 7/2
Tue 7/9

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Best Idaho Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Boise
Boise1 stop$75

Good to know

Cheapest flight

$43
Flight from Phoenix Sky Harbor Airport to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Phoenix to Idaho?

    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 Phoenix to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phoenix to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho from Phoenix 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 Phoenix to Idaho?

    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 Idaho with an airline and back to Phoenix with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phoenix to Idaho?

    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 Idaho from Phoenix 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 Phoenix to Idaho

Recent round-trip flight deals

7/2Tue
1 stopSpirit Airlines
5h 23mPHX-BOI
7/10Wed
1 stopSpirit Airlines
8h 23mBOI-PHX
$75
6/12Wed
1 stopSpirit Airlines
7h 31mPHX-BOI
6/19Wed
1 stopSpirit Airlines
14h 47mBOI-PHX
$85
7/19Fri
nonstopAllegiant Air
2h 03mAZA-BOI
7/22Mon
nonstopAllegiant Air
2h 06mBOI-AZA
$103
6/15Sat
2 stops
21h 41mPHX-BOI
6/18Tue
1 stop
14h 36mBOI-PHX
$184
9/5Thu
nonstopAmerican Airlines
2h 07mPHX-BOI
9/9Mon
nonstopAmerican Airlines
2h 07mBOI-PHX
$189
6/15Sat
2 stops
21h 41mPHX-BOI
6/17Mon
1 stop
15h 07mBOI-PHX
$190
9/5Thu
nonstopAlaska Airlines
2h 12mPHX-BOI
9/9Mon
1 stopAlaska Airlines
5h 42mBOI-PHX
$198
9/21Sat
nonstopAmerican Airlines
2h 17mPHX-BOI
9/27Fri
nonstopAmerican Airlines
2h 07mBOI-PHX
$214
6/14Fri
nonstopAllegiant Air
2h 05mAZA-BOI
6/24Mon
nonstopAllegiant Air
2h 07mBOI-AZA
$216
7/9Tue
1 stopAlaska Airlines
5h 10mPHX-GEG
7/16Tue
1 stopAlaska Airlines
5h 02mGEG-PHX
$228

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Recent one-way flight deals

7/30Tue
1 stopSpirit Airlines
13h 57mPHX-BOI
$43
7/9Tue
1 stopSpirit Airlines
24h 57mPHX-BOI
$70
7/31Wed
1 stop
13h 07mPHX-BOI
$79
6/28Fri
nonstopAllegiant Air
2h 05mAZA-BOI
$98
7/13Sat
nonstopAmerican Airlines
2h 35mPHX-GEG
$115
7/13Sat
1 stopDelta
7h 03mPHX-GEG
$124
6/15Sat
2 stops
21h 41mPHX-BOI
$124
6/18Tue
nonstopAmerican Airlines
2h 01mPHX-BOI
$140
7/11Thu
1 stopDelta
7h 03mPHX-GEG
$151
6/29Sat
2 stopsAllegiant Air
17h 38mAZA-BOI
$184

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Last minute flights from Phoenix to Idaho

Last minute flight, train and bus deals

6/3Mon
multi-stopSpirit Airlines
8h 00mPHX-BOI
6/7Fri
multi-stopSpirit Airlines
14h 36mBOI-PHX
$280
6/4Tue
multi-stopSpirit Airlines
8h 00mPHX-BOI
6/8Sat
multi-stopSpirit Airlines
14h 36mBOI-PHX
$304
6/4Tue
multi-stop
4h 05mPHX-BOI
6/8Sat
nonstop
2h 05mBOI-PHX
$336
6/4Tue
multi-stopAlaska Airlines
5h 47mPHX-GEG
6/5Wed
multi-stopAlaska Airlines
5h 22mGEG-PHX
$386
6/4Tue
nonstopAmerican Airlines
2h 43mPHX-GEG
6/5Wed
nonstopAmerican Airlines
2h 39mGEG-PHX
$407
6/3Mon
nonstopAmerican Airlines
2h 04mPHX-IDA
6/4Tue
multi-stopAmerican Airlines
8h 41mIDA-PHX
$421
6/3Mon
multi-stopDelta
3h 27mPHX-IDA
6/4Tue
multi-stopDelta
5h 46mIDA-PHX
$430
6/7Fri
multi-stopAlaska Airlines
5h 02mPHX-GEG
6/21Fri
multi-stopAlaska Airlines
7h 22mGEG-PHX
$439
6/5Wed
multi-stop
7h 31mPHX-BOI
6/7Fri
multi-stop
18h 23mBOI-PHX
$452
6/5Wed
multi-stopDelta
5h 34mPHX-JAC
6/10Mon
multi-stopDelta
6h 19mJAC-PHX
$627

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Flights to Idaho

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