$82+ Cheap flights from Phoenix to Idaho
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
May 3 — May 101
Round-trip
1 adult, Economy
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Cheapest flights from Phoenix to IdahoExplore the most affordable flight options available from Phoenix to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
Explore the most affordable flight options available from Phoenix to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
This Frontier deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Tue 5/121:22 pm
BOI
- PHX
1 stop11h 09m
Frontier
Deal found 3/29![Frontier logo]()
$160
This CheapOair deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/204:29 pm
PHX
- BOI
1 stop19h 01m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/3![Frontier logo]()
$176
This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:51 pm
PHX
- GEG
1 stop15h 58m
Frontier
Sun 4/2611:44 am
GEG
- PHX
1 stop19h 52m
Frontier
Deal found 3/31![Frontier logo]()
$176
This Cheapflightsfares deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/102:28 pm
AZA
- BOI
Nonstop2h 07m
Allegiant Air
Mon 4/136:25 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 3/30![Allegiant Air logo]()
$191
This CheapOair deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:50 pm
PHX
- BOI
1 stop21h 18m
Frontier
Sun 4/1911:53 am
BOI
- PHX
1 stop20h 43m
Frontier
Deal found 3/30![Frontier logo]()
$191
This Frontier deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/101:46 pm
PHX
- GEG
Nonstop2h 40m
Frontier
Mon 4/135:11 pm
GEG
- PHX
Nonstop2h 33m
Frontier
Deal found 3/30![Frontier logo]()
$192
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:15 am
PHX
- BOI
1 stop6h 12m
Multiple Airlines
Tue 5/121:25 pm
BOI
- PHX
Nonstop2h 11m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:27 pm
PHX
- GEG
1 stop22h 02m
Multiple Airlines
Sun 5/109:19 pm
GEG
- PHX
2 stops16h 01m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$199
This Cheapflightsfares deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/61:57 pm
AZA
- BOI
Nonstop2h 07m
Allegiant Air
Mon 4/136:25 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 4/2![Allegiant Air logo]()
$202
This Southwest deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:15 am
PHX
- BOI
1 stop6h 00m
Southwest
Tue 5/54:05 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/3![Southwest logo]()
$207
This Expedia deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
PHX
- BOI
1 stop8h 33m
Multiple Airlines
Tue 5/51:22 pm
BOI
- PHX
1 stop11h 09m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$209
This Frontier deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/3![Frontier logo]()
$210
Best flights from Phoenix to IdahoDiscover carefully curated flight deals from Phoenix to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
Discover carefully curated flight deals from Phoenix to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:43 pm
PHX
- BOI
1 stop4h 43m
Alaska Airlines
Sat 5/21:25 pm
BOI
- PHX
Nonstop2h 11m
Alaska Airlines
Deal found 3/30![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:45 am
PHX
- BOI
1 stop8h 39m
Delta
Sat 5/27:24 am
BOI
- PHX
1 stop8h 19m
Delta
Deal found 3/30![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:55 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Thu 5/77:55 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/2![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 am
PHX
- JAC
1 stop6h 21m
United Airlines
Sun 4/194:15 pm
JAC
- PHX
1 stop6h 54m
United Airlines
Deal found 4/1![United Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:32 pm
AZA
- BOI
2 stops24h 51m
Multiple Airlines
Thu 5/73:13 pm
BOI
- AZA
1 stop6h 01m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:57 pm
AZA
- BOI
2 stops20h 26m
Allegiant Air
Sun 4/195:38 pm
BOI
- AZA
1 stop5h 26m
Allegiant Air
Deal found 3/31![Allegiant Air logo]()
$416
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:00 am
PHX
- BOI
1 stop5h 40m
Southwest
Wed 5/65:15 pm
BOI
- PHX
1 stop6h 10m
Southwest
Deal found 3/31![Southwest logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
PHX
- BOI
1 stop6h 52m
Alaska Airlines
Sat 5/91:25 pm
BOI
- PHX
Nonstop2h 11m
Alaska Airlines
Deal found 4/2![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:16 pm
PHX
- BOI
1 stop3h 28m
Delta
Sun 5/248:45 am
BOI
- PHX
1 stop4h 24m
Delta
Deal found 4/2![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:05 pm
PHX
- BOI
1 stop4h 15m
Southwest
Tue 5/125:00 pm
BOI
- PHX
2 stops6h 25m
Southwest
Deal found 3/29![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:00 am
PHX
- GEG
1 stop5h 38m
Alaska Airlines
Wed 5/610:30 am
GEG
- PHX
1 stop7h 56m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$251
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:35 pm
PHX
- GEG
1 stop4h 50m
Southwest
Wed 5/67:00 am
GEG
- PHX
Nonstop2h 35m
Southwest
Deal found 3/31![Southwest logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:43 pm
PHX
- GEG
1 stop6h 37m
Alaska Airlines
Tue 5/126:00 am
GEG
- PHX
1 stop5h 14m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$251
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:00 am
PHX
- GEG
1 stop7h 40m
Alaska Airlines
Tue 5/126:00 am
GEG
- PHX
1 stop6h 58m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$251
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:35 am
PHX
- BOI
Nonstop2h 05m
Southwest
Sat 9/511:35 am
BOI
- PHX
1 stop6h 00m
Southwest
Deal found 4/2![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:05 am
PHX
- WYS
1 stop5h 20m
Delta
Wed 6/31:10 pm
WYS
- PHX
2 stops7h 04m
Delta
Deal found 3/31![Delta logo]()
$324
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1010:45 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Wed 5/206:40 am
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/2![Southwest logo]()
$270
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
PHX
- WYS
1 stop6h 28m
United Airlines
Sat 5/162:03 pm
WYS
- PHX
1 stop7h 16m
United Airlines
Deal found 3/29![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:52 am
PHX
- JAC
1 stop6h 07m
Delta
Fri 7/106:06 pm
JAC
- PHX
1 stop6h 25m
Delta
Deal found 3/30![Delta logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/249:00 am
AZA
- BOI
1 stop5h 10m
Multiple Airlines
Thu 5/284:00 pm
BOI
- AZA
2 stops16h 08m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:00 am
PHX
- JAC
1 stop5h 21m
United Airlines
Sun 5/37:00 am
JAC
- PHX
1 stop4h 48m
United Airlines
Deal found 3/29![United Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1512:04 pm
PHX
- GEG
1 stop9h 41m
Alaska Airlines
Sat 5/237:01 am
GEG
- PHX
1 stop8h 40m
Alaska Airlines
Deal found 4/2![Alaska Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:40 am
PHX
- JAC
2 stops8h 33m
Delta
Wed 5/61:09 pm
JAC
- PHX
1 stop6h 13m
Delta
Deal found 3/31![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:10 pm
PHX
- GEG
1 stop6h 15m
Southwest
Mon 6/81:30 pm
GEG
- PHX
2 stops7h 25m
Southwest
Deal found 3/29![Southwest logo]()
$296
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
PHX
- SUN
1 stop6h 38m
United Airlines
Sat 5/92:30 pm
SUN
- PHX
1 stop6h 49m
United Airlines
Deal found 4/2![United Airlines logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/219:00 am
AZA
- BOI
1 stop5h 10m
Multiple Airlines
Sun 5/244:00 pm
BOI
- AZA
2 stops16h 08m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$461
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:23 pm
PHX
- GEG
2 stops22h 17m
Alaska Airlines
Tue 6/23:20 pm
GEG
- PHX
1 stop3h 57m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:16 pm
PHX
- JAC
1 stop3h 13m
Delta
Sun 5/175:59 pm
JAC
- PHX
1 stop6h 30m
Delta
Deal found 4/1![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
PHX
- SUN
1 stop5h 35m
United Airlines
Mon 4/202:24 pm
SUN
- PHX
1 stop5h 21m
United Airlines
Deal found 4/1![United Airlines logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:37 am
PHX
- GEG
1 stop15h 43m
Alaska Airlines
Sun 5/37:27 am
GEG
- PHX
1 stop26h 56m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$343
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated April 3, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated April 3, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:52 pm
PHX
- BOI
1 stop15h 16m
Frontier
Sun 4/1212:03 pm
BOI
- PHX
1 stop20h 33m
Frontier
Deal found 3/29![Frontier logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/102:28 pm
AZA
- BOI
Nonstop2h 07m
Allegiant Air
Mon 4/136:25 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 3/30![Allegiant Air logo]()
$191
This Frontier deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/101:46 pm
PHX
- GEG
Nonstop2h 40m
Frontier
Mon 4/135:11 pm
GEG
- PHX
Nonstop2h 33m
Frontier
Deal found 3/30![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:50 pm
PHX
- BOI
1 stop21h 18m
Frontier
Sun 4/1911:53 am
BOI
- PHX
1 stop20h 43m
Frontier
Deal found 3/30![Frontier logo]()
$191
This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:51 pm
PHX
- GEG
1 stop15h 58m
Frontier
Sun 4/2611:44 am
GEG
- PHX
1 stop19h 52m
Frontier
Deal found 3/31![Frontier logo]()
$176
This Expedia deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
PHX
- BOI
1 stop8h 33m
Multiple Airlines
Tue 5/51:22 pm
BOI
- PHX
1 stop11h 09m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:15 am
PHX
- BOI
1 stop6h 00m
Southwest
Tue 5/54:05 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/3![Southwest logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:27 pm
PHX
- GEG
1 stop22h 02m
Multiple Airlines
Sun 5/109:19 pm
GEG
- PHX
2 stops16h 01m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$199
This Frontier deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Tue 5/121:22 pm
BOI
- PHX
1 stop11h 09m
Frontier
Deal found 3/29![Frontier logo]()
$160
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:15 am
PHX
- BOI
1 stop6h 12m
Multiple Airlines
Tue 5/121:25 pm
BOI
- PHX
Nonstop2h 11m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$199
This CheapOair deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/204:29 pm
PHX
- BOI
1 stop19h 01m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/3![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/3![Frontier logo]()
$210
One-way flights from Phoenix to IdahoSearch for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
This CheapOair deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:29 pm
PHX
- BOI
1 stop18h 58m
Frontier
Deal found 3/30![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:51 pm
PHX
- GEG
1 stop15h 58m
Frontier
Deal found 3/29![Frontier logo]()
$85
This Priceline deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/105:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Deal found 4/2![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:51 pm
PHX
- BOI
1 stop15h 17m
Frontier
Deal found 3/30![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:07 pm
PHX
- IDA
1 stop18h 20m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$98
This Trip.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:51 pm
PHX
- BOI
1 stop15h 17m
Frontier
Deal found 3/29![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Deal found 3/30![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:07 pm
PHX
- GEG
1 stop24h 22m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$102
This Super.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/189:52 am
PHX
- GEG
1 stop24h 57m
Frontier
Deal found 3/31![Frontier logo]()
$105
This CheapOair deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:43 pm
PHX
- BOI
1 stop4h 43m
Alaska Airlines
Deal found 4/2![Alaska Airlines logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:27 pm
PHX
- IDA
1 stop16h 41m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$109
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:15 am
PHX
- BOI
Nonstop2h 05m
Southwest
Deal found 3/30![Southwest logo]()
$109
Find flight deals from Phoenix to Idaho
Keep the following information in mind while searching for Phoenix to Idaho flight deals. Data was last updated April 3, 2026.
Round-trip from | $160 (Frontier) |
|---|---|
One-way from | $82 (CheapOair) |
Popular in | December |
Cheapest in | January |
Average price | $236 |
Cheapflights Fare Finder
Customize your flight search to find flights from Phoenix to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
Use the filters below to find and compare flights from Phoenix to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/29
3:43 pm-9:26 pm
1 stop4h 43m
Boise Air Term. Gowen Fld
Sat 5/2
1:25 pm-2:36 pm
Nonstop2h 11m
$227
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/29
11:45 am-9:24 pm
1 stop8h 39m
Boise Air Term. Gowen Fld
Sat 5/2
7:24 am-2:43 pm
1 stop8h 19m
$237
Quickest round-trip
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 4/30
9:55 pm-1:00 am
Nonstop2h 05m
Boise Air Term. Gowen Fld
Thu 5/7
7:55 pm-9:00 pm
Nonstop2h 05m
$237
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Tue 5/5
10:00 am-4:40 pm
1 stop5h 40m
Boise Air Term. Gowen Fld
Wed 5/6
5:15 pm-10:25 pm
1 stop6h 10m
$237
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 5/6
6:00 am-1:52 pm
1 stop6h 52m
Boise Air Term. Gowen Fld
Sat 5/9
1:25 pm-2:36 pm
Nonstop2h 11m
$237
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Tue 5/5
6:05 pm-11:20 pm
1 stop4h 15m
Boise Air Term. Gowen Fld
Tue 5/12
5:00 pm-10:25 pm
2 stops6h 25m
$242
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Tue 5/19
5:16 pm-9:44 pm
1 stop3h 28m
Boise Air Term. Gowen Fld
Sun 5/24
8:45 am-12:09 pm
1 stop4h 24m
$247
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Wed 4/29
6:35 pm-11:25 pm
1 stop4h 50m
Spokane
Wed 5/6
7:00 am-9:35 am
Nonstop2h 35m
$247
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Tue 5/5
5:00 am-10:38 am
1 stop5h 38m
Spokane
Wed 5/6
10:30 am-6:26 pm
1 stop7h 56m
$251
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Wed 5/6
3:43 pm-10:20 pm
1 stop6h 37m
Spokane
Tue 5/12
6:00 am-11:14 am
1 stop5h 14m
$251
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Phoenix to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Phoenix with our price prediction graph.
PHX-BOI
PHX-GEG
AZA-BOI
PHX-JAC
PHX-WYS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix to Idaho
PH1-USID
PHX-BOI
PHX-GEG
AZA-BOI
PHX-JAC
What is the cheapest month to book a flight from Phoenix to Idaho?
Currently, October is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $84). Flying from Phoenix to Idaho in December is currently the most expensive (average of $165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHX to ID?
Find hourly flight availability from Phoenix to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 3, 2026.
It’s typically best to fly out from Phoenix to Idaho at noon. Doing so could potentially save you 23% on the flight price compared to flying in the evening, which is usually more expensive.
What is the cheapest day to fly from Phoenix to Idaho?
Use this chart to determine the cheapest time to fly round-trip from Phoenix to Idaho. Price data was last updated on March 28, 2026.
Travelers seeking maximum savings on their Phoenix to Idaho flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Phoenix to Idaho
Explore weekly flight availability from Phoenix to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 3, 2026.
The most flights from PH1 to USID are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Phoenix to Idaho?
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated April 3, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from Phoenix to Idaho to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Phoenix to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Phoenix to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Phoenix to Idaho by cabin class
Find flights from Phoenix to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Phoenix and Idaho flights
Browse other Phoenix and Idaho flight options. Last updated on April 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Phoenix to Idaho flights
Consider these flights traveling from Phoenix to Idaho.
Top 7 airlines flying from Phoenix to Idaho
Discover the top 7 airlines that operate flights from Phoenix to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$399 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$82 | Average$165 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$124 | Average$198 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$137 | Average$235 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$151 | Average$257 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$156 | Average$356 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$290 | Average$445 | FlexibilityNo cancel fee | On-time69% |