$70+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
May 22 — May 291
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 22, 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 22, 2026.
This Expedia deal was found by Cheapflights users on 4/17. 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 5/145:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Sun 5/171:22 pm
BOI
- PHX
1 stop19h 22m
Frontier
Deal found 4/17![Frontier logo]()
$160
This Southwest deal was found by Cheapflights users on 4/21. 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 5/278:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Tue 6/24:05 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/21![Southwest logo]()
$167
This Delta deal was found by Cheapflights users on 4/20. 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 5/271:23 pm
PHX
- BOI
1 stop3h 27m
Delta
Tue 6/26:41 pm
BOI
- PHX
1 stop5h 48m
Delta
Deal found 4/20![Delta logo]()
$173
This Expedia deal was found by Cheapflights users on 4/17. 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 5/145:15 am
PHX
- BOI
1 stop6h 12m
Multiple Airlines
Sat 5/166:08 pm
BOI
- PHX
Nonstop2h 09m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$179
This Frontier deal was found by Cheapflights users on 4/21. 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 5/285:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Thu 6/41:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/21![Frontier logo]()
$180
This Travelocity deal was found by Cheapflights users on 4/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/175:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop21h 40m
Frontier
Deal found 4/19![Frontier logo]()
$190
This Delta deal was found by Cheapflights users on 4/21. 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 5/306:00 am
PHX
- BOI
1 stop7h 34m
Delta
Tue 6/23:23 pm
BOI
- PHX
1 stop4h 51m
Delta
Deal found 4/21![Delta logo]()
$196
This Southwest deal was found by Cheapflights users on 4/20. 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 5/278:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Mon 6/17:55 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/20![Southwest logo]()
$198
This Expedia deal was found by Cheapflights users on 4/21. 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 5/206:00 am
PHX
- BOI
1 stop8h 34m
Multiple Airlines
Sun 5/241:25 pm
BOI
- PHX
1 stop19h 19m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$200
This Expedia deal was found by Cheapflights users on 4/20. 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.
Mon 6/15:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Fri 6/512:33 pm
GEG
- PHX
1 stop8h 37m
Frontier
Deal found 4/20![Frontier logo]()
$200
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 6/27:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Wed 6/36:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$201
This Frontier deal was found by Cheapflights users on 4/19. 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.
Mon 5/115:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Fri 5/1512:33 pm
GEG
- PHX
1 stop8h 37m
Frontier
Deal found 4/19![Frontier logo]()
$201
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 22, 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 22, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 6/27:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Wed 6/36:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$201
This Southwest deal was found by Cheapflights users on 4/20. 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 5/278:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Mon 6/16:55 pm
BOI
- PHX
1 stop5h 05m
Southwest
Deal found 4/20![Southwest logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/72:15 pm
PHX
- TWF
2 stops20h 45m
Multiple Airlines
Mon 5/111:45 pm
TWF
- PHX
1 stop22h 38m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 4/21. 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
Allegiant Air
Thu 6/43:07 pm
BOI
- AZA
1 stop5h 17m
Allegiant Air
Deal found 4/21![Allegiant Air logo]()
$298
This Delta deal was found by Cheapflights users on 4/17. 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 5/1912:45 pm
PHX
- BOI
1 stop8h 28m
Delta
Sun 5/2410:50 am
BOI
- PHX
1 stop6h 09m
Delta
Deal found 4/17![Delta logo]()
$318
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/66:00 am
PHX
- WYS
1 stop6h 28m
United Airlines
Sun 5/102:03 pm
WYS
- PHX
1 stop7h 16m
United Airlines
Deal found 4/20![United Airlines logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 6/27:59 pm
PHX
- GEG
1 stop25h 46m
Alaska Airlines
Mon 6/87:01 am
GEG
- PHX
1 stop8h 40m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 6/36:00 am
PHX
- BOI
1 stop6h 02m
Alaska Airlines
Sat 6/66:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 4/21. 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 6/2510:45 pm
PHX
- BOI
Nonstop2h 00m
Southwest
Mon 6/295:55 pm
BOI
- PHX
Nonstop2h 10m
Southwest
Deal found 4/21![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 4/21. 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 6/165:50 am
PHX
- BOI
1 stop3h 55m
Southwest
Sat 6/205:10 pm
BOI
- PHX
1 stop6h 50m
Southwest
Deal found 4/21![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 4/19. 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 5/1912:45 pm
PHX
- BOI
1 stop8h 28m
Delta
Mon 5/2512:55 pm
BOI
- PHX
1 stop4h 04m
Delta
Deal found 4/19![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 4/19. 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 7/15:10 pm
PHX
- BOI
1 stop6h 15m
Southwest
Tue 7/72:05 pm
BOI
- PHX
1 stop7h 10m
Southwest
Deal found 4/19![Southwest logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/289:00 am
AZA
- BOI
1 stop5h 10m
Allegiant Air
Thu 6/43:07 pm
BOI
- AZA
1 stop5h 17m
Allegiant Air
Deal found 4/21![Allegiant Air logo]()
$350
This Delta deal was found by Cheapflights users on 4/20. 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 7/206:00 am
PHX
- JAC
2 stops9h 59m
Delta
Fri 7/316:06 pm
JAC
- PHX
2 stops6h 51m
Delta
Deal found 4/20![Delta logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 5/196:00 am
PHX
- BOI
1 stop8h 34m
Alaska Airlines
Sun 5/246:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 4/17. 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.
Sun 5/106:05 am
PHX
- JAC
1 stop3h 43m
Delta
Sat 5/167:45 am
JAC
- PHX
1 stop5h 24m
Delta
Deal found 4/17![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 6/17:53 pm
PHX
- GEG
1 stop25h 52m
Alaska Airlines
Mon 6/812:46 pm
GEG
- PHX
2 stops11h 10m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 4/17. 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 5/21:15 pm
PHX
- JAC
1 stop4h 46m
Delta
Wed 5/61:09 pm
JAC
- PHX
1 stop6h 13m
Delta
Deal found 4/17![Delta logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/2110:27 pm
PHX
- IDA
1 stop13h 33m
Multiple Airlines
Fri 5/227:48 pm
IDA
- PHX
2 stops12h 56m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 4/19. 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 7/211:16 pm
PHX
- JAC
1 stop7h 29m
United Airlines
Thu 7/238:00 am
JAC
- PHX
1 stop7h 42m
United Airlines
Deal found 4/19![United Airlines logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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.
Sun 5/317:53 pm
PHX
- GEG
1 stop25h 52m
Alaska Airlines
Sun 6/77:01 am
GEG
- PHX
1 stop12h 09m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$322
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 5/66:00 am
PHX
- SUN
1 stop6h 38m
United Airlines
Sat 5/92:30 pm
SUN
- PHX
1 stop6h 49m
United Airlines
Deal found 4/17![United Airlines logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 7/207:30 am
AZA
- BOI
2 stops27h 39m
Multiple Airlines
Thu 8/63:14 pm
BOI
- AZA
1 stop5h 15m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 5/277:53 pm
PHX
- GEG
1 stop25h 52m
Alaska Airlines
Fri 5/295:00 am
GEG
- PHX
2 stops10h 41m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 4/22. 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 7/1112:30 pm
PHX
- SUN
2 stops8h 38m
Delta
Tue 7/141:10 pm
SUN
- PHX
2 stops7h 05m
Delta
Deal found 4/22![Delta logo]()
$366
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/59:50 am
PHX
- IDA
1 stop4h 53m
United Airlines
Sat 5/92:31 pm
IDA
- PHX
1 stop6h 48m
United Airlines
Deal found 4/20![United Airlines logo]()
$463
This Southwest deal was found by Cheapflights users on 4/21. 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 9/1710:40 am
PHX
- GEG
Nonstop2h 35m
Southwest
Sun 9/205:35 am
GEG
- PHX
1 stop5h 10m
Southwest
Deal found 4/21![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 4/21. 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 5/149:33 am
PHX
- JAC
1 stop6h 26m
Delta
Sun 5/175:59 pm
JAC
- PHX
1 stop6h 30m
Delta
Deal found 4/21![Delta logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 7/208:30 am
AZA
- BOI
2 stops26h 39m
Multiple Airlines
Sun 8/93:14 pm
BOI
- AZA
1 stop5h 15m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$500
This United Airlines deal was found by Cheapflights users on 4/21. 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 4/266:00 am
PHX
- SUN
1 stop6h 35m
United Airlines
Thu 4/302:30 pm
SUN
- PHX
1 stop5h 32m
United Airlines
Deal found 4/21![United Airlines logo]()
$476
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated April 22, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/19. 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.
Mon 5/115:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Fri 5/1512:33 pm
GEG
- PHX
1 stop8h 37m
Frontier
Deal found 4/19![Frontier logo]()
$201
This Expedia deal was found by Cheapflights users on 4/17. 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 5/145:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Sun 5/171:22 pm
BOI
- PHX
1 stop19h 22m
Frontier
Deal found 4/17![Frontier logo]()
$160
This Expedia deal was found by Cheapflights users on 4/17. 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 5/145:15 am
PHX
- BOI
1 stop6h 12m
Multiple Airlines
Sat 5/166:08 pm
BOI
- PHX
Nonstop2h 09m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$179
This Travelocity deal was found by Cheapflights users on 4/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/175:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop21h 40m
Frontier
Deal found 4/19![Frontier logo]()
$190
This Expedia deal was found by Cheapflights users on 4/21. 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 5/206:00 am
PHX
- BOI
1 stop8h 34m
Multiple Airlines
Sun 5/241:25 pm
BOI
- PHX
1 stop19h 19m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$200
This Southwest deal was found by Cheapflights users on 4/21. 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 5/278:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Tue 6/24:05 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/21![Southwest logo]()
$167
This Delta deal was found by Cheapflights users on 4/20. 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 5/271:23 pm
PHX
- BOI
1 stop3h 27m
Delta
Tue 6/26:41 pm
BOI
- PHX
1 stop5h 48m
Delta
Deal found 4/20![Delta logo]()
$173
This Southwest deal was found by Cheapflights users on 4/20. 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 5/278:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Mon 6/17:55 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 4/20![Southwest logo]()
$198
This Frontier deal was found by Cheapflights users on 4/21. 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 5/285:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Thu 6/41:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/21![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/21. 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 5/285:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Tue 6/21:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/21![Frontier logo]()
$201
This Expedia deal was found by Cheapflights users on 4/21. 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.
Fri 5/295:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Mon 6/112:33 pm
GEG
- PHX
1 stop8h 37m
Frontier
Deal found 4/21![Frontier logo]()
$200
This Delta deal was found by Cheapflights users on 4/21. 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 5/306:00 am
PHX
- BOI
1 stop7h 34m
Delta
Tue 6/23:23 pm
BOI
- PHX
1 stop4h 51m
Delta
Deal found 4/21![Delta logo]()
$196
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 22, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This Frontier deal was found by Cheapflights users on 4/18. 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 5/145:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Deal found 4/18![Frontier logo]()
$70
This Super.com deal was found by Cheapflights users on 4/21. 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.
Mon 5/115:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Deal found 4/21![Frontier logo]()
$79
This Southwest deal was found by Cheapflights users on 4/22. 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 5/268:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Deal found 4/22![Southwest logo]()
$84
This Delta deal was found by Cheapflights users on 4/22. 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 5/261:23 pm
PHX
- BOI
1 stop3h 27m
Delta
Deal found 4/22![Delta logo]()
$87
This Trip.com deal was found by Cheapflights users on 4/19. 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.
Tue 5/266:51 pm
PHX
- GEG
1 stop16h 47m
Frontier
Deal found 4/19![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 4/17. 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 5/175:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Deal found 4/17![Frontier logo]()
$90
This Southwest deal was found by Cheapflights users on 4/20. 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 6/26:35 pm
PHX
- BOI
1 stop4h 50m
Southwest
Deal found 4/20![Southwest logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 6/86:51 pm
PHX
- BOI
1 stop16h 39m
Frontier
Deal found 4/21![Frontier logo]()
$96
This Priceline deal was found by Cheapflights users on 4/18. 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 5/185:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Deal found 4/18![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/1310:27 pm
PHX
- GEG
1 stop22h 02m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$101
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/237:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/2010:27 pm
PHX
- GEG
1 stop21h 28m
Multiple Airlines
Deal found 4/20![Multiple Airlines 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 22, 2026.
Round-trip from | $160 (Expedia) |
|---|---|
One-way from | $70 (Frontier) |
Popular in | December |
Cheapest in | January |
Average price | $257 |
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 22, 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
Tue 6/2
7:59 pm-11:11 pm
Nonstop2h 12m
Boise Air Term. Gowen Fld
Wed 6/3
6:08 pm-7:17 pm
Nonstop2h 09m
$201
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 5/27
8:25 pm-11:30 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Mon 6/1
6:55 pm-11:00 pm
1 stop5h 05m
$208
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Tue 6/2
7:59 pm-9:45 pm
1 stop25h 46m
Spokane
Mon 6/8
7:01 am-3:41 pm
1 stop8h 40m
$228
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 6/3
6:00 am-1:02 pm
1 stop6h 02m
Boise Air Term. Gowen Fld
Sat 6/6
6:08 pm-7:17 pm
Nonstop2h 09m
$237
PhoenixTwin Falls
PHX - TWF
PHXTWF
Phoenix Sky Harbor Intl
Thu 5/7
2:15 pm-12:00 pm
2 stops20h 45m
Twin Falls Joslin
Mon 5/11
1:45 pm-11:23 am
1 stop22h 38m
$240
Quickest round-trip
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 6/25
10:45 pm-1:45 am
Nonstop2h 00m
Boise Air Term. Gowen Fld
Mon 6/29
5:55 pm-7:05 pm
Nonstop2h 10m
$266
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Tue 6/16
5:50 am-10:45 am
1 stop3h 55m
Boise Air Term. Gowen Fld
Sat 6/20
5:10 pm-11:00 pm
1 stop6h 50m
$277
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 7/1
5:10 pm-12:25 am
1 stop6h 15m
Boise Air Term. Gowen Fld
Tue 7/7
2:05 pm-8:15 pm
1 stop7h 10m
$288
PhoenixBoise
AZA - BOI
AZABOI
Phoenix-Mesa Gateway
Sun 5/24
9:00 am-3:10 pm
1 stop5h 10m
Boise Air Term. Gowen Fld
Thu 6/4
3:07 pm-7:24 pm
1 stop5h 17m
$298
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Tue 5/19
6:00 am-3:34 pm
1 stop8h 34m
Boise Air Term. Gowen Fld
Sun 5/24
6:08 pm-7:17 pm
Nonstop2h 09m
$301
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
PHX-TWF
AZA-BOI
PHX-SUN
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
PHX-TWF
AZA-BOI
What is the cheapest month to book a flight from Phoenix to Idaho?
Currently, August is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $78). Flying from Phoenix to Idaho in January is currently the most expensive (average of $122). 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 22, 2026.
It’s typically best to fly out from Phoenix to Idaho at noon. Doing so could potentially save you 25% 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 April 18, 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 22, 2026.
The most flights from PH1 to USID are scheduled on a Tuesday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 22, 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.
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
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 22, 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 22, 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$243 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$149 | Average$261 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$157 | Average$358 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$290 | Average$456 | FlexibilityNo cancel fee | On-time69% |