$71+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Aug 27 — Sep 31
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 July 28, 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 July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/105:23 pm
PHX
- IDA
1 stop17h 27m
Multiple Airlines
Mon 9/146:21 pm
IDA
- PHX
1 stop18h 38m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/209:03 am
PHX
- IDA
1 stop24h 44m
Multiple Airlines
Mon 8/245:33 pm
IDA
- PHX
1 stop6h 51m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 10/810:40 pm
PHX
- IDA
1 stop16h 20m
Multiple Airlines
Mon 10/129:33 pm
IDA
- PHX
1 stop13h 40m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$183
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 11/238:50 am
AZA
- BOI
Nonstop2h 11m
Allegiant Air
Wed 12/239:19 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$238
This Expedia deal was found by Cheapflights users on 7/27. 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.
Wed 11/49:53 am
PHX
- BOI
Nonstop2h 16m
Multiple Airlines
Mon 11/93:52 pm
BOI
- PHX
1 stop6h 43m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$239
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 8/247:49 pm
PHX
- BOI
1 stop17h 13m
Alaska Airlines
Sat 9/53:30 pm
BOI
- PHX
Nonstop2h 18m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$240
This Priceline deal was found by Cheapflights users on 7/26. 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.
Sat 9/127:08 am
PHX
- BOI
1 stop5h 54m
Alaska Airlines
Sat 9/125:42 pm
BOI
- PHX
Nonstop2h 13m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$241
This Priceline deal was found by Cheapflights users on 7/26. 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.
Mon 10/58:00 am
PHX
- BOI
1 stop4h 55m
Multiple Airlines
Wed 10/77:10 am
BOI
- PHX
Nonstop2h 11m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$242
This Frontier deal was found by Cheapflights users on 7/26. 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 9/188:00 am
PHX
- BOI
1 stop4h 55m
Frontier
Mon 9/212:50 pm
BOI
- PHX
1 stop8h 57m
Frontier
Deal found 7/26![Frontier logo]()
$243
This Frontier deal was found by Cheapflights users on 7/26. 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 8/136:40 am
PHX
- BOI
1 stop4h 49m
Frontier
Thu 8/2012:24 pm
BOI
- PHX
1 stop10h 04m
Frontier
Deal found 7/26![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/296:57 pm
PHX
- BOI
1 stop15h 32m
Frontier
Tue 9/11:24 pm
BOI
- PHX
1 stop11h 15m
Frontier
Deal found 7/24![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Fri 9/257:22 am
PHX
- IDA
1 stop9h 33m
Multiple Airlines
Mon 9/286:21 pm
IDA
- PHX
1 stop18h 38m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$246
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 July 28, 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 July 28, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 11/238:50 am
AZA
- BOI
Nonstop2h 11m
Allegiant Air
Wed 12/239:19 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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.
Sat 10/109:05 am
PHX
- BOI
Nonstop2h 13m
Alaska Airlines
Mon 10/127:20 am
BOI
- PHX
1 stop16h 40m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$240
This Southwest deal was found by Cheapflights users on 7/28. 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 9/510:00 am
PHX
- BOI
Nonstop2h 00m
Southwest
Sat 9/53:10 pm
BOI
- PHX
1 stop5h 55m
Southwest
Deal found 7/28![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 7/24. 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 8/277:20 pm
PHX
- BOI
1 stop3h 39m
Delta
Sun 8/307:00 am
BOI
- PHX
1 stop5h 35m
Delta
Deal found 7/24![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 9/69:23 am
PHX
- JAC
1 stop5h 05m
United Airlines
Wed 9/98:00 am
JAC
- PHX
1 stop5h 55m
United Airlines
Deal found 7/24![United Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/278:20 am
AZA
- BOI
1 stop7h 08m
Multiple Airlines
Thu 9/312:24 pm
BOI
- AZA
2 stops32h 35m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$450
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 9/257:37 pm
PHX
- BOI
Nonstop2h 08m
Alaska Airlines
Sun 9/276:00 am
BOI
- PHX
1 stop4h 51m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 7/26. 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.
Mon 8/2411:25 am
PHX
- GEG
1 stop5h 30m
Southwest
Mon 8/313:40 pm
GEG
- PHX
2 stops6h 45m
Southwest
Deal found 7/26![Southwest logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 10/76:02 am
PHX
- GEG
1 stop5h 37m
Alaska Airlines
Sun 10/117:19 am
GEG
- PHX
1 stop26h 07m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 7/27. 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 8/205:45 pm
PHX
- GEG
1 stop4h 25m
Southwest
Mon 8/243:40 pm
GEG
- PHX
2 stops7h 45m
Southwest
Deal found 7/27![Southwest logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 11/238:50 am
AZA
- BOI
Nonstop2h 11m
Allegiant Air
Mon 11/303:29 pm
BOI
- AZA
Nonstop2h 07m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 8/247:00 am
PHX
- BOI
2 stops7h 32m
Alaska Airlines
Sat 9/57:20 am
BOI
- PHX
1 stop8h 13m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 7/26. 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.
Fri 10/93:05 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Fri 10/167:45 pm
BOI
- PHX
1 stop4h 40m
Southwest
Deal found 7/26![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 7/25. 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 8/246:00 am
PHX
- WYS
1 stop5h 27m
Delta
Mon 8/311:09 pm
WYS
- PHX
2 stops10h 51m
Delta
Deal found 7/25![Delta logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 11/2510:30 am
AZA
- BOI
Nonstop2h 11m
Allegiant Air
Mon 11/303:29 pm
BOI
- AZA
Nonstop2h 07m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 8/274:06 pm
PHX
- BOI
1 stop6h 38m
Alaska Airlines
Sun 8/303:30 pm
BOI
- PHX
Nonstop2h 18m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 7/27. 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 9/57:20 am
PHX
- GEG
2 stops6h 20m
Southwest
Fri 9/113:40 pm
GEG
- PHX
2 stops7h 50m
Southwest
Deal found 7/27![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 7/28. 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 11/101:58 pm
PHX
- PIH
2 stops7h 48m
Delta
Wed 11/116:04 am
PIH
- PHX
1 stop3h 31m
Delta
Deal found 7/28![Delta logo]()
$342
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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.
Thu 9/35:30 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Tue 9/85:42 pm
BOI
- PHX
Nonstop2h 13m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 7/28. 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 10/163:30 pm
PHX
- SUN
1 stop4h 55m
United Airlines
Sun 10/182:38 pm
SUN
- PHX
1 stop5h 54m
United Airlines
Deal found 7/28![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 7/23. 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 8/226:00 am
PHX
- TWF
1 stop5h 23m
Delta
Sat 8/291:17 pm
TWF
- PHX
1 stop3h 48m
Delta
Deal found 7/23![Delta logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 11/2812:04 pm
AZA
- BOI
Nonstop2h 11m
Allegiant Air
Fri 12/47:18 pm
BOI
- AZA
Nonstop2h 13m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$347
This United Airlines deal was found by Cheapflights users on 7/27. 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 10/207:30 am
PHX
- JAC
1 stop6h 54m
United Airlines
Wed 10/211:40 pm
JAC
- PHX
1 stop4h 34m
United Airlines
Deal found 7/27![United Airlines logo]()
$401
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Thu 9/35:30 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Sun 9/63:30 pm
BOI
- PHX
Nonstop2h 18m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 7/26. 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 8/261:20 pm
PHX
- JAC
1 stop4h 35m
Delta
Tue 9/811:38 am
JAC
- PHX
1 stop5h 32m
Delta
Deal found 7/26![Delta logo]()
$350
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 9/189:15 am
PHX
- GEG
1 stop6h 20m
Southwest
Mon 9/214:20 pm
GEG
- PHX
Nonstop2h 35m
Southwest
Deal found 7/24![Southwest logo]()
$322
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sun 8/96:00 am
PHX
- SUN
1 stop6h 16m
United Airlines
Thu 8/132:50 pm
SUN
- PHX
1 stop6h 40m
United Airlines
Deal found 7/25![United Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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.
Thu 9/107:49 pm
PHX
- GEG
1 stop28h 04m
Alaska Airlines
Sun 9/136:00 am
GEG
- PHX
1 stop13h 07m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 7/23. 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 9/85:45 am
PHX
- LWS
1 stop5h 49m
Delta
Sat 9/199:16 am
LWS
- PHX
2 stops9h 45m
Delta
Deal found 7/23![Delta logo]()
$352
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 10/24:30 pm
PHX
- GEG
1 stop5h 50m
Southwest
Tue 10/66:05 am
GEG
- PHX
Nonstop2h 35m
Southwest
Deal found 7/24![Southwest logo]()
$322
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated July 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/86:53 pm
PHX
- BOI
1 stop16h 36m
Frontier
Tue 8/181:24 pm
BOI
- PHX
1 stop11h 15m
Frontier
Deal found 7/25![Frontier logo]()
$253
This Frontier deal was found by Cheapflights users on 7/25. 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.
Sun 8/96:40 am
PHX
- BOI
1 stop4h 49m
Frontier
Sun 8/161:24 pm
BOI
- PHX
1 stop11h 03m
Frontier
Deal found 7/25![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/124:49 pm
PHX
- BOI
1 stop18h 40m
Frontier
Tue 8/181:24 pm
BOI
- PHX
1 stop19h 16m
Frontier
Deal found 7/24![Frontier logo]()
$251
This Frontier deal was found by Cheapflights users on 7/26. 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 8/136:40 am
PHX
- BOI
1 stop4h 49m
Frontier
Tue 8/251:24 pm
BOI
- PHX
1 stop11h 15m
Frontier
Deal found 7/26![Frontier logo]()
$244
This Southwest deal was found by Cheapflights users on 7/27. 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 8/191:30 pm
PHX
- GEG
2 stops8h 10m
Southwest
Wed 8/267:30 am
GEG
- PHX
Nonstop2h 35m
Southwest
Deal found 7/27![Southwest logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/209:03 am
PHX
- IDA
1 stop24h 44m
Multiple Airlines
Mon 8/245:33 pm
IDA
- PHX
1 stop6h 51m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$176
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 8/2412:13 pm
PHX
- BOI
1 stop24h 49m
Alaska Airlines
Sat 9/53:30 pm
BOI
- PHX
Nonstop2h 18m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$250
This Expedia deal was found by Cheapflights users on 7/24. 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 8/275:30 pm
PHX
- BOI
Nonstop2h 12m
Multiple Airlines
Sun 8/3012:24 pm
BOI
- PHX
1 stop20h 16m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$254
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 8/275:30 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Sun 8/303:30 pm
BOI
- PHX
Nonstop2h 18m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 8/284:06 pm
PHX
- BOI
1 stop5h 27m
Alaska Airlines
Wed 9/21:32 pm
BOI
- PHX
1 stop5h 08m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/296:57 pm
PHX
- BOI
1 stop15h 32m
Frontier
Tue 9/11:24 pm
BOI
- PHX
1 stop11h 15m
Frontier
Deal found 7/24![Frontier logo]()
$245
This Trip.com deal was found by Cheapflights users on 7/25. 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 8/295:30 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Sun 8/308:03 am
BOI
- PHX
1 stop5h 59m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$249
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 July 28, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Fri 10/169:31 am
AZA
- BOI
Nonstop2h 09m
Allegiant Air
Deal found 7/24![Allegiant Air logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Mon 9/218:00 am
PHX
- BOI
1 stop4h 55m
Frontier
Deal found 7/24![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 9/248:00 am
PHX
- BOI
1 stop5h 57m
Frontier
Deal found 7/24![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Mon 10/266:30 am
PHX
- BOI
1 stop7h 27m
Frontier
Deal found 7/26![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 10/2810:40 pm
PHX
- BOI
1 stop15h 17m
Frontier
Deal found 7/26![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 7/26. 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 8/262:04 pm
PHX
- GEG
1 stop19h 18m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/238:30 am
PHX
- GEG
1 stop24h 49m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 10/295:55 pm
PHX
- IDA
1 stop18h 39m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$88
This CheapOair deal was found by Cheapflights users on 7/27. 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.
Mon 11/910:01 am
AZA
- BOI
Nonstop2h 09m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/279:03 am
PHX
- IDA
1 stop24h 19m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 10/15:23 pm
PHX
- BOI
1 stop20h 34m
Frontier
Deal found 7/27![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/2910:09 pm
PHX
- GEG
1 stop11h 13m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$94
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 July 28, 2026.
Round-trip from | $172 (Kiwi.com) |
|---|---|
One-way from | $71 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $353 |
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 July 28, 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
AZA - BOI
AZABOI
Phoenix-Mesa Gateway
Mon 11/23
8:50 am-11:01 am
Nonstop2h 11m
Boise Air Term. Gowen Fld
Wed 12/23
9:19 pm-11:29 pm
Nonstop2h 10m
$238
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 10/10
9:05 am-12:18 pm
Nonstop2h 13m
Boise Air Term. Gowen Fld
Mon 10/12
7:20 am-11:00 pm
1 stop16h 40m
$240
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 9/5
10:00 am-1:00 pm
Nonstop2h 00m
Boise Air Term. Gowen Fld
Sat 9/5
3:10 pm-8:05 pm
1 stop5h 55m
$247
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Fri 9/25
7:37 pm-10:45 pm
Nonstop2h 08m
Boise Air Term. Gowen Fld
Sun 9/27
6:00 am-9:51 am
1 stop4h 51m
$247
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Wed 10/7
6:02 am-11:39 am
1 stop5h 37m
Spokane
Sun 10/11
7:19 am-9:26 am
1 stop26h 07m
$258
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Mon 8/24
11:25 am-4:55 pm
1 stop5h 30m
Spokane
Mon 8/31
3:40 pm-10:25 pm
2 stops6h 45m
$262
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Thu 8/20
5:45 pm-10:10 pm
1 stop4h 25m
Spokane
Mon 8/24
3:40 pm-11:25 pm
2 stops7h 45m
$262
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Mon 8/24
7:00 am-3:32 pm
2 stops7h 32m
Boise Air Term. Gowen Fld
Sat 9/5
7:20 am-2:33 pm
1 stop8h 13m
$263
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Fri 10/9
3:05 pm-6:10 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Fri 10/16
7:45 pm-11:25 pm
1 stop4h 40m
$267
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 8/27
4:06 pm-11:44 pm
1 stop6h 38m
Boise Air Term. Gowen Fld
Sun 8/30
3:30 pm-4:48 pm
Nonstop2h 18m
$267
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.
AZA-BOI
PHX-BOI
PHX-JAC
PHX-GEG
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
AZA-BOI
PHX-BOI
PHX-JAC
PHX-GEG
What is the cheapest month to book a flight from Phoenix to Idaho?
Currently, January is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $177). Flying from Phoenix to Idaho in July is currently the most expensive (average of $362). 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 July 28, 2026.
It’s typically best to fly out from Phoenix to Idaho at noon. Doing so could potentially save you 29% on the flight price compared to flying in the evening, which is usually more expensive.
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 July 28, 2026.
The most flights from PH1 to USID are scheduled on a Thursday (7 on average). You will have fewer flight options on Tuesday, 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?
Airfare is typical for this route at the moment.
Phoenix to Idaho flights typically cost between $236 and $298 in November.The cheapest round-trip price found within the last 5 days was $238 on Allegiant Air (Nov 23-Dec 23).
How far ahead should I book a flight from Phoenix to Idaho?
Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Phoenix to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 July 25, 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.
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 July 28, 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.
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 July 28, 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 July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$442 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$78 | Average$193 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$82 | Average$209 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$147 | Average$293 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$156 | Average$275 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$170 | Average$371 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$175 | Average$448 | FlexibilityNo cancel fee | On-time69% |