$48+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Mar 18 — Mar 251
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 16, 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 16, 2026.
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/3011:45 am
PHX
- BOI
1 stop7h 15m
Delta
Sun 5/38:59 am
BOI
- PHX
1 stop6h 44m
Delta
Deal found 2/15![Delta logo]()
$137
This Booking.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com 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 2/13![Allegiant Air logo]()
$147
This Booking.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.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 2/13![Allegiant Air logo]()
$150
This American Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” 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.
Thu 4/168:25 pm
PHX
- BOI
Nonstop2h 16m
American Airlines
Sat 4/186:26 pm
BOI
- PHX
Nonstop2h 15m
American Airlines
Deal found 2/16![American Airlines logo]()
$156
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 2/15![Delta logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 2/267:52 pm
PHX
- BOI
Nonstop2h 17m
Alaska Airlines
Sun 3/17:15 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$169
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 7/255:45 pm
PHX
- GEG
1 stop5h 59m
Delta
Sat 8/15:20 am
GEG
- PHX
1 stop7h 41m
Delta
Deal found 2/15![Delta logo]()
$171
This Expedia deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 2/276:00 am
PHX
- BOI
1 stop5h 11m
Multiple Airlines
Sun 3/17:15 am
BOI
- PHX
Nonstop2h 22m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$174
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/56:00 am
PHX
- BOI
1 stop5h 40m
Alaska Airlines
Tue 3/105:40 am
BOI
- PHX
1 stop5h 11m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$175
This Southwest deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 5/27:00 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sun 5/33:25 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/15![Southwest logo]()
$176
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/23:45 pm
PHX
- BOI
1 stop5h 19m
Delta
Mon 4/64:43 pm
BOI
- PHX
1 stop8h 15m
Delta
Deal found 2/15![Delta logo]()
$177
This Orbitz deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:40 pm
PHX
- BOI
Nonstop2h 18m
Multiple Airlines
Sun 4/1212:03 pm
BOI
- PHX
1 stop6h 44m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$179
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 16, 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 16, 2026.
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 5/26:30 am
PHX
- BOI
1 stop8h 44m
Delta
Sun 5/33:44 pm
BOI
- PHX
1 stop8h 34m
Delta
Deal found 2/15![Delta logo]()
$137
This Booking.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.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 2/13![Allegiant Air logo]()
$150
This Southwest deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 5/27:00 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sun 5/33:25 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/15![Southwest logo]()
$176
This American Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/18:20 pm
PHX
- BOI
Nonstop2h 18m
American Airlines
Sat 4/47:20 pm
BOI
- PHX
Nonstop2h 21m
American Airlines
Deal found 2/15![American Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
PHX
- BOI
1 stop8h 33m
Alaska Airlines
Sat 5/21:25 pm
BOI
- PHX
Nonstop2h 11m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$187
This Frontier deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/101:46 pm
PHX
- GEG
Nonstop2h 40m
Frontier
Mon 4/135:11 pm
GEG
- PHX
Nonstop2h 33m
Frontier
Deal found 2/12![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 3/2012:48 pm
PHX
- IDA
1 stop7h 35m
Multiple Airlines
Mon 3/2310:13 pm
IDA
- PHX
1 stop18h 05m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$233
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/147:00 am
PHX
- JAC
1 stop5h 21m
United Airlines
Sat 4/182:35 pm
JAC
- PHX
1 stop6h 44m
United Airlines
Deal found 2/15![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” 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 stop8h 44m
Delta
Sat 4/186:00 am
BOI
- PHX
1 stop3h 29m
Delta
Deal found 2/16![Delta logo]()
$137
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/306:30 am
PHX
- BOI
1 stop8h 44m
Delta
Sun 5/35:40 am
BOI
- PHX
1 stop6h 10m
Delta
Deal found 2/15![Delta logo]()
$137
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/711:50 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Tue 3/104:30 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/14![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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
Tue 4/74:05 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/14![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 2/15![Delta logo]()
$167
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” 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 3/132:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/166:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/16![Allegiant Air logo]()
$203
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 3/317:00 am
PHX
- GEG
1 stop8h 34m
Alaska Airlines
Wed 4/157:19 am
GEG
- PHX
1 stop7h 20m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 7/255:45 pm
PHX
- GEG
1 stop5h 59m
Delta
Sat 8/15:20 am
GEG
- PHX
1 stop7h 41m
Delta
Deal found 2/15![Delta logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:00 am
AZA
- BOI
1 stop5h 23m
Allegiant Air
Mon 4/65:54 pm
BOI
- AZA
Nonstop2h 09m
Allegiant Air
Deal found 2/15![Allegiant Air logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/36:15 am
PHX
- TWF
1 stop4h 45m
Multiple Airlines
Mon 4/61:40 pm
TWF
- PHX
2 stops6h 40m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$256
This Alaska Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 8/117:02 pm
PHX
- GEG
1 stop4h 48m
Alaska Airlines
Mon 8/175:00 am
GEG
- PHX
1 stop6h 01m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/23:45 pm
PHX
- BOI
1 stop7h 01m
Delta
Mon 4/67:30 pm
BOI
- PHX
1 stop5h 28m
Delta
Deal found 2/15![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 2/15![Allegiant Air logo]()
$226
This American Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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.
Mon 3/27:45 pm
PHX
- SUN
Nonstop2h 17m
American Airlines
Fri 3/67:55 am
SUN
- PHX
Nonstop2h 27m
American Airlines
Deal found 2/15![American Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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.
Mon 3/167:23 am
PHX
- JAC
1 stop4h 58m
United Airlines
Mon 3/234:16 pm
JAC
- PHX
1 stop6h 55m
United Airlines
Deal found 2/15![United Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/175:23 pm
PHX
- BOI
1 stop3h 33m
Delta
Sun 4/198:59 am
BOI
- PHX
1 stop6h 44m
Delta
Deal found 2/15![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 7/297:02 pm
PHX
- GEG
1 stop4h 48m
Alaska Airlines
Thu 8/66:00 am
GEG
- PHX
1 stop7h 04m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/202:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Mon 3/306:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/14![Allegiant Air logo]()
$234
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 5/83:48 pm
PHX
- BOI
1 stop5h 25m
Delta
Tue 5/1912:16 pm
BOI
- PHX
1 stop5h 24m
Delta
Deal found 2/15![Delta logo]()
$177
This American Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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.
Mon 3/166:19 pm
PHX
- SUN
Nonstop2h 17m
American Airlines
Mon 3/237:40 am
SUN
- PHX
Nonstop2h 27m
American Airlines
Deal found 2/15![American Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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.
Mon 3/26:00 am
PHX
- SUN
1 stop6h 29m
United Airlines
Fri 3/62:33 pm
SUN
- PHX
1 stop7h 23m
United Airlines
Deal found 2/15![United Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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
Fri 3/276:03 pm
BOI
- AZA
Nonstop2h 10m
Allegiant Air
Deal found 2/15![Allegiant Air logo]()
$235
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated February 16, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated February 16, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com 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 2/13![Allegiant Air logo]()
$147
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 2/267:52 pm
PHX
- BOI
Nonstop2h 17m
Alaska Airlines
Sun 3/17:15 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$169
This Expedia deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 2/276:00 am
PHX
- BOI
1 stop5h 11m
Multiple Airlines
Sun 3/17:15 am
BOI
- PHX
Nonstop2h 22m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$174
This Expedia deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 2/276:00 am
PHX
- BOI
1 stop5h 11m
Frontier
Sun 3/111:56 am
BOI
- PHX
1 stop20h 16m
Frontier
Deal found 2/13![Frontier logo]()
$181
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/56:00 am
PHX
- BOI
1 stop5h 40m
Alaska Airlines
Tue 3/105:40 am
BOI
- PHX
1 stop5h 11m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$175
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/56:00 am
PHX
- BOI
1 stop5h 40m
Alaska Airlines
Mon 3/166:13 pm
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$186
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/711:50 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Tue 3/104:30 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/14![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/106:15 am
PHX
- BOI
1 stop5h 50m
Delta
Tue 3/107:30 pm
BOI
- PHX
1 stop5h 27m
Delta
Deal found 2/14![Delta logo]()
$137
This Expedia deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 3/126:52 pm
PHX
- BOI
Nonstop2h 15m
Alaska Airlines
Mon 3/164:02 pm
BOI
- PHX
1 stop5h 14m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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
Mon 3/305:25 am
BOI
- PHX
Nonstop2h 10m
Southwest
Deal found 2/13![Southwest logo]()
$187
This Booking.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.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 2/13![Allegiant Air logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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.
Tue 3/316:17 pm
PHX
- GEG
1 stop5h 42m
Hawaiian Airlines
Tue 4/77:31 pm
GEG
- PHX
1 stop4h 42m
Hawaiian Airlines
Deal found 2/14![Hawaiian Airlines logo]()
$186
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 16, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/126:52 pm
PHX
- BOI
Nonstop2h 15m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$48
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 2/12![Allegiant Air logo]()
$69
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/125:35 pm
PHX
- BOI
1 stop5h 09m
Delta
Deal found 2/14![Delta logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 2/272:35 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Deal found 2/13![Allegiant Air logo]()
$70
This Expedia deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 3/302:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Deal found 2/12![Allegiant Air logo]()
$80
This Frontier deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 2/276:00 am
PHX
- BOI
1 stop5h 11m
Frontier
Deal found 2/13![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/61:57 pm
AZA
- BOI
Nonstop2h 07m
Allegiant Air
Deal found 2/13![Allegiant Air logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/16:50 am
PHX
- BOI
1 stop27h 18m
Frontier
Deal found 2/12![Frontier logo]()
$84
This Super.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:54 pm
PHX
- BOI
1 stop21h 14m
Frontier
Deal found 2/13![Frontier logo]()
$85
This Alaska Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” 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 4/166:00 am
PHX
- GEG
1 stop7h 53m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$86
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 5/135:51 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Deal found 2/13![Alaska Airlines 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 16, 2026.
Round-trip from | $137 (Delta) |
|---|---|
One-way from | $48 (Alaska Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $258 |
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 16, 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
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 5/2
6:30 am-4:14 pm
1 stop8h 44m
Boise Air Term. Gowen Fld
Sun 5/3
3:44 pm-11:18 pm
1 stop8h 34m
$137
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 4/16
6:30 am-4:14 pm
1 stop8h 44m
Boise Air Term. Gowen Fld
Sat 4/18
6:00 am-8:29 am
1 stop3h 29m
$137
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 4/30
6:30 am-4:14 pm
1 stop8h 44m
Boise Air Term. Gowen Fld
Sun 5/3
5:40 am-10:50 am
1 stop6h 10m
$137
PhoenixBoise
AZA - BOI
AZABOI
Phoenix-Mesa Gateway
Fri 3/27
2:01 pm-5:13 pm
Nonstop2h 12m
Boise Air Term. Gowen Fld
Mon 3/30
6:03 pm-7:13 pm
Nonstop2h 10m
$150
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
$167
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Sat 7/25
5:45 pm-11:44 pm
1 stop5h 59m
Spokane
Sat 8/1
5:20 am-1:01 pm
1 stop7h 41m
$171
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 5/2
7:00 pm-10:05 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Sun 5/3
3:25 pm-4:30 pm
Nonstop2h 05m
$176
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/1
8:20 pm-11:38 pm
Nonstop2h 18m
Boise Air Term. Gowen Fld
Sat 4/4
7:20 pm-8:41 pm
Nonstop2h 21m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 3/7
11:50 pm-1:55 am
Nonstop2h 05m
Boise Air Term. Gowen Fld
Tue 3/10
4:30 pm-5:35 pm
Nonstop2h 05m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 3/25
9:25 pm-12:30 am
Nonstop2h 05m
Boise Air Term. Gowen Fld
Tue 4/7
4:05 pm-5:10 pm
Nonstop2h 05m
$177
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.
PHX-BOI
AZA-BOI
PHX-GEG
PHX-IDA
PHX-JAC
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
AZA-BOI
PHX-GEG
PHX-IDA
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 16, 2026.
It’s typically best to fly out from Phoenix to Idaho at noon. Doing so could potentially save you 30% 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 7, 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. Sunday at noon 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 16, 2026.
The most flights from PH1 to USID are scheduled on a Monday (12 on average). You will have fewer flight options on Wednesday, 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 February 16, 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.
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
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 16, 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$416 | 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$140 | Average$239 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$147 | Average$250 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$156 | Average$359 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$247 | Average$445 | FlexibilityNo cancel fee | On-time69% |