$65+ 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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Mar 24 — Mar 311
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 February 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 February 22, 2026.
This Southwest deal was found by Cheapflights users on 2/21. 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.
Sat 5/97:00 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sat 5/167:05 am
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/21![Southwest logo]()
$132
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/62:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/95:37 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/21![Allegiant Air logo]()
$134
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/272:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/25:37 pm
BOI
- AZA
Nonstop2h 16m
Allegiant Air
Deal found 2/20![Allegiant Air logo]()
$149
This Super.com deal was found by Cheapflights users on 2/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:20 am
PHX
- GEG
Nonstop2h 55m
Frontier
Thu 4/23:59 pm
GEG
- PHX
Nonstop2h 33m
Frontier
Deal found 2/22![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/272:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Fri 4/35:54 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 2/21![Allegiant Air logo]()
$157
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:30 am
PHX
- BOI
Nonstop2h 30m
American Airlines
Sat 4/412:42 pm
BOI
- PHX
Nonstop2h 16m
American Airlines
Deal found 2/19![American Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/272:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/306:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/22![Allegiant Air logo]()
$162
This Southwest deal was found by Cheapflights users on 2/21. 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.
Sat 4/187:00 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sun 4/193:25 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/21![Southwest logo]()
$165
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Sat 5/25:00 am
PHX
- BOI
1 stop6h 35m
Alaska Airlines
Sat 5/166:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 2/20![Alaska Airlines logo]()
$167
This Priceline deal was found by Cheapflights users on 2/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:05 pm
PHX
- GEG
Nonstop2h 40m
Frontier
Mon 4/135:11 pm
GEG
- PHX
Nonstop2h 33m
Frontier
Deal found 2/21![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
Wed 4/156:51 pm
PHX
- GEG
1 stop15h 58m
Multiple Airlines
Sun 4/199:19 pm
GEG
- PHX
1 stop12h 49m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$174
This Southwest deal was found by Cheapflights users on 2/19. 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 3/259:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Fri 4/35:25 am
BOI
- PHX
Nonstop2h 10m
Southwest
Deal found 2/19![Southwest logo]()
$177
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 February 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 February 22, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/62:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/95:37 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/21![Allegiant Air logo]()
$134
This CheapOair deal was found by Cheapflights users on 2/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:40 pm
PHX
- BOI
Nonstop2h 18m
Alaska Airlines
Wed 4/225:56 pm
BOI
- PHX
1 stop5h 47m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$167
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/23:50 pm
PHX
- BOI
1 stop5h 34m
Delta
Sat 5/1610:36 am
BOI
- PHX
1 stop7h 04m
Delta
Deal found 2/18![Delta logo]()
$177
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:35 pm
PHX
- BOI
Nonstop2h 18m
American Airlines
Sat 5/26:26 pm
BOI
- PHX
Nonstop2h 15m
American Airlines
Deal found 2/19![American Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 3/236:40 am
PHX
- TWF
1 stop4h 20m
Multiple Airlines
Mon 3/301:40 pm
TWF
- PHX
1 stop26h 38m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:50 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Fri 3/277:25 pm
BOI
- PHX
Nonstop2h 10m
Southwest
Deal found 2/18![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 3/213:20 pm
PHX
- SUN
1 stop5h 05m
United Airlines
Sat 3/282:33 pm
SUN
- PHX
1 stop6h 48m
United Airlines
Deal found 2/19![United Airlines logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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.
Sat 5/26:00 am
PHX
- BOI
1 stop8h 33m
Alaska Airlines
Sat 5/166:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$167
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:30 am
PHX
- BOI
1 stop5h 42m
Delta
Wed 4/225:40 am
BOI
- PHX
1 stop6h 10m
Delta
Deal found 2/18![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/272:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Fri 4/35:54 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 2/22![Allegiant Air logo]()
$186
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
PHX
- BOI
1 stop7h 43m
Delta
Tue 5/1912:51 pm
BOI
- PHX
1 stop4h 08m
Delta
Deal found 2/18![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 2/19. 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.
Sat 4/47:50 am
PHX
- BOI
1 stop5h 35m
Southwest
Sun 4/55:20 am
BOI
- PHX
Nonstop2h 15m
Southwest
Deal found 2/19![Southwest logo]()
$197
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/135:00 am
PHX
- BOI
1 stop5h 40m
Alaska Airlines
Tue 3/177:00 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$187
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 4/2911:45 am
PHX
- BOI
1 stop7h 15m
Delta
Sat 5/28:59 am
BOI
- PHX
1 stop8h 46m
Delta
Deal found 2/19![Delta logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/132:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/166:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/18![Allegiant Air logo]()
$203
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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.
Sat 5/26:00 am
PHX
- BOI
1 stop8h 33m
Alaska Airlines
Sun 5/31:25 pm
BOI
- PHX
Nonstop2h 11m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$206
This WAYA deal was found by Cheapflights users on 2/19. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:24 pm
AZA
- BOI
1 stop6h 28m
Multiple Airlines
Fri 4/35:54 pm
BOI
- AZA
Nonstop2h 09m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$252
This WAYA deal was found by Cheapflights users on 2/20. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:00 am
AZA
- BOI
1 stop5h 23m
Allegiant Air
Mon 4/65:54 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 2/20![Allegiant Air logo]()
$214
This Delta deal was found by Cheapflights users on 2/19. 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.
Thu 4/166:30 am
PHX
- BOI
1 stop5h 42m
Delta
Sat 4/186:16 pm
BOI
- PHX
1 stop4h 15m
Delta
Deal found 2/19![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:30 pm
PHX
- GEG
Nonstop2h 40m
Southwest
Wed 3/255:25 am
GEG
- PHX
1 stop4h 45m
Southwest
Deal found 2/18![Southwest logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:00 am
AZA
- BOI
1 stop5h 30m
Allegiant Air
Mon 3/306:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/22![Allegiant Air logo]()
$217
This WAYA deal was found by Cheapflights users on 2/18. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:54 pm
AZA
- BOI
1 stop5h 58m
Multiple Airlines
Mon 3/306:03 pm
BOI
- AZA
Nonstop2h 10m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:10 am
PHX
- JAC
1 stop5h 46m
United Airlines
Mon 4/64:15 pm
JAC
- PHX
1 stop5h 04m
United Airlines
Deal found 2/18![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 2/21. 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.
Tue 3/315:35 pm
PHX
- GEG
1 stop5h 15m
Delta
Wed 4/153:30 pm
GEG
- PHX
1 stop6h 21m
Delta
Deal found 2/21![Delta logo]()
$223
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:40 pm
PHX
- GEG
1 stop5h 25m
Southwest
Wed 4/82:25 pm
GEG
- PHX
Nonstop2h 35m
Southwest
Deal found 2/18![Southwest logo]()
$273
This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/202:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/236:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/18![Allegiant Air logo]()
$232
This American Airlines deal was found by Cheapflights users on 2/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/138:13 pm
PHX
- IDA
Nonstop2h 11m
American Airlines
Sat 3/146:05 am
IDA
- PHX
Nonstop2h 27m
American Airlines
Deal found 2/18![American Airlines logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 4/255:00 am
PHX
- GEG
1 stop8h 23m
Alaska Airlines
Sat 4/255:00 pm
GEG
- PHX
1 stop6h 59m
Alaska Airlines
Deal found 2/19![Alaska Airlines logo]()
$264
This Delta deal was found by Cheapflights users on 2/19. 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.
Fri 4/245:40 pm
PHX
- GEG
1 stop5h 35m
Delta
Sat 4/253:33 pm
GEG
- PHX
1 stop7h 45m
Delta
Deal found 2/19![Delta logo]()
$233
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/216:19 pm
PHX
- SUN
Nonstop2h 17m
American Airlines
Sat 3/287:40 am
SUN
- PHX
Nonstop2h 27m
American Airlines
Deal found 2/19![American Airlines logo]()
$351
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated February 22, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated February 22, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 2/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/202:38 pm
AZA
- BOI
Nonstop2h 13m
Allegiant Air
Mon 2/235:41 pm
BOI
- AZA
Nonstop2h 17m
Allegiant Air
Deal found 2/18![Allegiant Air logo]()
$196
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/272:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/25:37 pm
BOI
- AZA
Nonstop2h 16m
Allegiant Air
Deal found 2/20![Allegiant Air logo]()
$149
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/62:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/95:37 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/21![Allegiant Air logo]()
$134
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:00 am
PHX
- BOI
1 stop5h 40m
Alaska Airlines
Tue 3/177:00 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$167
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:00 am
PHX
- BOI
1 stop5h 40m
Alaska Airlines
Tue 3/177:00 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$187
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:52 pm
PHX
- BOI
Nonstop2h 15m
Alaska Airlines
Tue 3/177:00 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 3/236:40 am
PHX
- TWF
1 stop4h 20m
Multiple Airlines
Mon 3/301:40 pm
TWF
- PHX
1 stop26h 38m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 2/19. 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 3/259:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Fri 4/35:25 am
BOI
- PHX
Nonstop2h 10m
Southwest
Deal found 2/19![Southwest logo]()
$177
This Super.com deal was found by Cheapflights users on 2/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:20 am
PHX
- GEG
Nonstop2h 55m
Frontier
Thu 4/23:59 pm
GEG
- PHX
Nonstop2h 33m
Frontier
Deal found 2/22![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/272:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Fri 4/35:54 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 2/21![Allegiant Air logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/272:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/306:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/22![Allegiant Air logo]()
$162
This Southwest deal was found by Cheapflights users on 2/20. 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.
Fri 3/2710:50 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Tue 3/317:10 pm
BOI
- PHX
1 stop4h 30m
Southwest
Deal found 2/20![Southwest logo]()
$197
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 February 22, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated February 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/21. 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.
Fri 4/31:57 pm
AZA
- BOI
Nonstop2h 07m
Allegiant Air
Deal found 2/21![Allegiant Air logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com 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
Deal found 2/19![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 2/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1210:20 am
PHX
- GEG
Nonstop2h 55m
Frontier
Deal found 2/19![Frontier logo]()
$78
This Southwest deal was found by Cheapflights users on 2/20. 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 4/228:25 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Deal found 2/20![Southwest logo]()
$79
This Frontier deal was found by Cheapflights users on 2/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1910:20 am
PHX
- GEG
Nonstop2h 55m
Frontier
Deal found 2/22![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/162:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Deal found 2/19![Allegiant Air logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:55 pm
PHX
- GEG
1 stop15h 52m
Frontier
Deal found 2/22![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/62:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Deal found 2/19![Allegiant Air logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/169:24 pm
PHX
- BOI
1 stop12h 44m
Frontier
Deal found 2/19![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:50 pm
PHX
- GEG
1 stop21h 59m
Frontier
Deal found 2/19![Frontier logo]()
$88
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:30 pm
PHX
- BOI
1 stop6h 45m
Delta
Deal found 2/18![Delta logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 2/21. 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.
Wed 4/226:51 pm
PHX
- GEG
1 stop15h 58m
Frontier
Deal found 2/21![Frontier logo]()
$89
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 February 22, 2026.
Round-trip from | $132 (Southwest) |
|---|---|
One-way from | $65 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $263 |
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 February 22, 2026.
Use the filters below to find and compare flights from Phoenix to Idaho that are best for you.
Fly from
Phoenix
Fly to
Idaho
Route
Depart
Return
Price
PhoenixBoise
AZA - BOI
AZABOI
Phoenix-Mesa Gateway
Fri 3/6
2:35 pm-4:47 pm
Nonstop2h 12m
Boise Air Term. Gowen Fld
Mon 3/9
5:37 pm-6:47 pm
Nonstop2h 10m
$134
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/15
8:40 pm-11:58 pm
Nonstop2h 18m
Boise Air Term. Gowen Fld
Wed 4/22
5:56 pm-10:43 pm
1 stop5h 47m
$167
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 5/2
6:00 am-3:33 pm
1 stop8h 33m
Boise Air Term. Gowen Fld
Sat 5/16
6:08 pm-7:17 pm
Nonstop2h 09m
$167
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 5/2
3:50 pm-10:24 pm
1 stop5h 34m
Boise Air Term. Gowen Fld
Sat 5/16
10:36 am-4:40 pm
1 stop7h 04m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/15
6:30 am-1:12 pm
1 stop5h 42m
Boise Air Term. Gowen Fld
Wed 4/22
5:40 am-10:50 am
1 stop6h 10m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 5/16
6:00 am-2:43 pm
1 stop7h 43m
Boise Air Term. Gowen Fld
Tue 5/19
12:51 pm-3:59 pm
1 stop4h 08m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/29
11:45 am-8:00 pm
1 stop7h 15m
Boise Air Term. Gowen Fld
Sat 5/2
8:59 am-4:45 pm
1 stop8h 46m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/29
2:35 pm-5:53 pm
Nonstop2h 18m
Boise Air Term. Gowen Fld
Sat 5/2
6:26 pm-7:41 pm
Nonstop2h 15m
$180
PhoenixTwin Falls
PHX - TWF
PHXTWF
Phoenix Sky Harbor Intl
Mon 3/23
6:40 am-12:00 pm
1 stop4h 20m
Twin Falls Joslin
Mon 3/30
1:40 pm-3:18 pm
1 stop26h 38m
$183
PhoenixBoise
AZA - BOI
AZABOI
Phoenix-Mesa Gateway
Fri 3/27
2:01 pm-5:13 pm
Nonstop2h 12m
Boise Air Term. Gowen Fld
Fri 4/3
5:54 pm-7:03 pm
Nonstop2h 09m
$186
Showing 1-10 of 60 results
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-GEG
PHX-BOI
PHX-TWF
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
AZA-BOI
PHX-GEG
PHX-BOI
PHX-TWF
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 February 22, 2026.
It’s typically best to fly out from Phoenix to Idaho at noon. Doing so could potentially save you 31% 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 February 21, 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 February 22, 2026.
The most flights from PH1 to USID are scheduled on a Friday (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
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 February 22, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Overall
8.0
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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 February 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 February 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$411 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$82 | Average$164 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$136 | Average$197 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$139 | Average$238 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$149 | Average$252 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$156 | Average$356 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$247 | Average$445 | FlexibilityNo cancel fee | On-time69% |