$66+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from Phoenix to Idaho with Cheapflights
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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 3, 2026.
Explore the most affordable flight options available from Phoenix to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Mon 3/25:37 pm
BOI
- AZA
Nonstop2h 16m
Allegiant Air
Deal found 2/1![Allegiant Air logo]()
$114
This Southwest deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sat 5/167:05 am
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 1/31![Southwest logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 2/1![Allegiant Air logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com 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 51m
Frontier
Sun 3/812:15 pm
BOI
- PHX
1 stop8h 59m
Frontier
Deal found 2/1![Frontier logo]()
$147
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/265:35 pm
PHX
- BOI
1 stop5h 10m
Delta
Thu 4/27:30 pm
BOI
- PHX
1 stop5h 28m
Delta
Deal found 2/2![Delta logo]()
$151
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:18 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Sat 5/21:25 pm
BOI
- PHX
Nonstop2h 11m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$157
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:00 am
PHX
- BOI
1 stop5h 51m
Multiple Airlines
Sun 3/17:15 am
BOI
- PHX
Nonstop2h 22m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$169
This American Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:25 pm
PHX
- BOI
Nonstop2h 16m
American Airlines
Sat 4/112:14 pm
BOI
- PHX
Nonstop2h 11m
American Airlines
Deal found 1/31![American Airlines logo]()
$173
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:42 pm
PHX
- BOI
1 stop7h 03m
Delta
Mon 3/210:41 am
BOI
- PHX
1 stop8h 23m
Delta
Deal found 2/2![Delta logo]()
$174
This Frontier deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:00 am
PHX
- GEG
Nonstop2h 55m
Frontier
Sun 3/18:12 pm
GEG
- PHX
Nonstop2h 47m
Frontier
Deal found 2/3![Frontier logo]()
$174
This Trip.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:52 am
PHX
- GEG
1 stop26h 35m
Frontier
Sun 3/812:40 pm
GEG
- PHX
Nonstop2h 47m
Frontier
Deal found 2/1![Frontier logo]()
$178
This Gotogate deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/132:38 pm
AZA
- BOI
Nonstop2h 13m
Allegiant Air
Mon 2/165:41 pm
BOI
- AZA
Nonstop2h 17m
Allegiant Air
Deal found 2/2![Allegiant Air logo]()
$182
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 3, 2026.
Discover carefully curated flight deals from Phoenix to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Mon 3/25:37 pm
BOI
- AZA
Nonstop2h 16m
Allegiant Air
Deal found 2/1![Allegiant Air logo]()
$114
This Southwest deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sat 5/167:05 am
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 1/31![Southwest logo]()
$140
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/25:20 pm
PHX
- BOI
1 stop5h 36m
Delta
Thu 7/92:45 pm
BOI
- PHX
1 stop6h 52m
Delta
Deal found 2/2![Delta logo]()
$151
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:52 pm
PHX
- BOI
Nonstop2h 17m
Alaska Airlines
Mon 3/27:15 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:25 am
PHX
- TWF
1 stop4h 35m
Multiple Airlines
Mon 5/41:40 pm
TWF
- PHX
1 stop11h 09m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/241:52 pm
PHX
- SUN
1 stop6h 32m
United Airlines
Wed 3/252:33 pm
SUN
- PHX
1 stop5h 06m
United Airlines
Deal found 1/31![United Airlines logo]()
$247
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:28 pm
PHX
- GEG
Nonstop2h 46m
American Airlines
Wed 4/156:05 am
GEG
- PHX
Nonstop2h 40m
American Airlines
Deal found 2/2![American Airlines logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 2/1![Allegiant Air logo]()
$141
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:42 pm
PHX
- BOI
1 stop7h 03m
Delta
Mon 3/210:41 am
BOI
- PHX
1 stop8h 23m
Delta
Deal found 2/2![Delta logo]()
$174
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:55 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sun 5/33:25 pm
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 2/2![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:50 pm
PHX
- BOI
1 stop7h 27m
Delta
Sat 5/28:00 am
BOI
- PHX
1 stop5h 07m
Delta
Deal found 2/2![Delta logo]()
$177
This Gotogate deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/132:38 pm
AZA
- BOI
Nonstop2h 13m
Allegiant Air
Mon 2/165:41 pm
BOI
- AZA
Nonstop2h 17m
Allegiant Air
Deal found 2/2![Allegiant Air logo]()
$182
This Southwest deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/109:55 pm
PHX
- BOI
Nonstop2h 05m
Southwest
Sat 4/117:05 am
BOI
- PHX
Nonstop2h 05m
Southwest
Deal found 1/31![Southwest logo]()
$186
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:00 am
PHX
- GEG
1 stop7h 53m
Alaska Airlines
Wed 4/157:31 pm
GEG
- PHX
1 stop4h 42m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/23:50 pm
PHX
- BOI
1 stop5h 34m
Delta
Sun 5/35:40 am
BOI
- PHX
1 stop6h 10m
Delta
Deal found 2/2![Delta logo]()
$187
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:10 am
PHX
- BOI
1 stop6h 20m
Southwest
Tue 4/710:05 am
BOI
- PHX
2 stops7h 25m
Southwest
Deal found 2/1![Southwest logo]()
$192
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
PHX
- BOI
1 stop7h 43m
Delta
Tue 5/1912:16 pm
BOI
- PHX
1 stop5h 24m
Delta
Deal found 2/1![Delta logo]()
$187
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/259:50 am
PHX
- JAC
1 stop4h 34m
United Airlines
Tue 4/287:00 am
JAC
- PHX
1 stop4h 48m
United Airlines
Deal found 2/2![United Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/162:01 pm
AZA
- BOI
Nonstop2h 12m
Allegiant Air
Thu 3/195:20 pm
BOI
- AZA
1 stop6h 50m
Allegiant Air
Deal found 1/31![Allegiant Air logo]()
$226
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:00 am
PHX
- GEG
1 stop6h 06m
Alaska Airlines
Wed 3/116:20 am
GEG
- PHX
1 stop16h 22m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Sun 3/82:50 pm
BOI
- AZA
1 stop6h 24m
Allegiant Air
Deal found 2/1![Allegiant Air logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:28 pm
PHX
- GEG
1 stop12h 31m
Alaska Airlines
Sat 2/2812:00 pm
GEG
- PHX
1 stop8h 00m
Alaska Airlines
Deal found 1/31![Alaska Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:00 am
PHX
- JAC
1 stop6h 49m
United Airlines
Sat 6/138:00 am
JAC
- PHX
1 stop5h 14m
United Airlines
Deal found 2/2![United Airlines logo]()
$288
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/177:45 pm
PHX
- SUN
Nonstop2h 17m
American Airlines
Sat 2/217:40 am
SUN
- PHX
Nonstop2h 27m
American Airlines
Deal found 2/1![American Airlines logo]()
$346
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:25 am
PHX
- IDA
1 stop5h 05m
United Airlines
Tue 3/102:35 pm
IDA
- PHX
1 stop5h 04m
United Airlines
Deal found 2/1![United Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:57 pm
PHX
- IDA
1 stop20h 34m
Multiple Airlines
Mon 3/910:30 pm
IDA
- PHX
2 stops13h 29m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$382
This Alaska Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:27 pm
PHX
- GEG
1 stop8h 32m
Alaska Airlines
Sun 3/16:00 am
GEG
- PHX
1 stop8h 08m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:15 am
PHX
- JAC
1 stop7h 40m
Delta
Sat 3/145:50 pm
JAC
- PHX
1 stop5h 31m
Delta
Deal found 2/2![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:45 pm
PHX
- GEG
Nonstop2h 45m
Southwest
Sat 2/2812:35 pm
GEG
- PHX
1 stop6h 30m
Southwest
Deal found 1/31![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:15 am
PHX
- JAC
1 stop7h 40m
Delta
Mon 3/95:50 pm
JAC
- PHX
1 stop6h 49m
Delta
Deal found 2/1![Delta logo]()
$269
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated February 3, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/132:38 pm
AZA
- BOI
Nonstop2h 13m
Allegiant Air
Mon 2/165:41 pm
BOI
- AZA
Nonstop2h 17m
Allegiant Air
Deal found 2/2![Allegiant Air logo]()
$182
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:00 am
PHX
- BOI
1 stop5h 51m
Multiple Airlines
Sun 3/17:15 am
BOI
- PHX
Nonstop2h 22m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$169
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:52 pm
PHX
- BOI
Nonstop2h 17m
Alaska Airlines
Sun 2/227:15 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$178
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:42 pm
PHX
- BOI
1 stop7h 03m
Delta
Mon 3/210:41 am
BOI
- PHX
1 stop8h 23m
Delta
Deal found 2/2![Delta logo]()
$174
This Frontier deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:00 am
PHX
- GEG
Nonstop2h 55m
Frontier
Sun 3/18:12 pm
GEG
- PHX
Nonstop2h 47m
Frontier
Deal found 2/3![Frontier logo]()
$174
This Alaska Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Mon 3/27:15 am
BOI
- PHX
Nonstop2h 22m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Mon 3/25:37 pm
BOI
- AZA
Nonstop2h 16m
Allegiant Air
Deal found 2/1![Allegiant Air logo]()
$114
This Expedia deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 am
PHX
- BOI
1 stop5h 11m
Multiple Airlines
Sun 3/87:15 am
BOI
- PHX
Nonstop2h 22m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$181
This Trip.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:52 am
PHX
- GEG
1 stop26h 35m
Frontier
Sun 3/812:40 pm
GEG
- PHX
Nonstop2h 47m
Frontier
Deal found 2/1![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com 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 51m
Frontier
Sun 3/812:15 pm
BOI
- PHX
1 stop8h 59m
Frontier
Deal found 2/1![Frontier logo]()
$147
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/265:35 pm
PHX
- BOI
1 stop5h 10m
Delta
Thu 4/27:30 pm
BOI
- PHX
1 stop5h 28m
Delta
Deal found 2/2![Delta logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 2/1![Allegiant Air logo]()
$141
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 3, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:55 am
PHX
- BOI
Nonstop2h 10m
Southwest
Deal found 2/1![Southwest logo]()
$66
This Super.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:17 pm
PHX
- GEG
1 stop24h 10m
Frontier
Deal found 2/1![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:51 pm
PHX
- BOI
1 stop17h 00m
Frontier
Deal found 2/2![Frontier logo]()
$71
This Frontier deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
PHX
- BOI
1 stop5h 51m
Frontier
Deal found 2/2![Frontier logo]()
$74
This Frontier deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
PHX
- GEG
1 stop6h 27m
Frontier
Deal found 1/31![Frontier logo]()
$74
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:22 am
PHX
- BOI
1 stop25h 49m
Frontier
Deal found 2/1![Frontier logo]()
$76
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:40 pm
PHX
- BOI
Nonstop2h 18m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:51 pm
PHX
- GEG
1 stop17h 36m
Frontier
Deal found 2/3![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/132:38 pm
AZA
- BOI
Nonstop2h 13m
Allegiant Air
Deal found 2/3![Allegiant Air logo]()
$80
This Frontier deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:00 am
PHX
- BOI
1 stop5h 51m
Frontier
Deal found 2/2![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:00 am
PHX
- GEG
Nonstop2h 55m
Frontier
Deal found 2/3![Frontier logo]()
$84
This Trip.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2110:51 pm
PHX
- BOI
1 stop12h 20m
Frontier
Deal found 2/2![Frontier logo]()
$88
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 3, 2026.
Round-trip from | $114 (Kiwi.com) |
|---|---|
One-way from | $66 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $252 |
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 3, 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 2/27
2:35 pm-4:47 pm
Nonstop2h 12m
Boise Air Term. Gowen Fld
Mon 3/2
5:37 pm-7:53 pm
Nonstop2h 16m
$114
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Sat 5/2
7:00 pm-10:05 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Sat 5/16
7:05 am-8:10 am
Nonstop2h 05m
$140
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
$141
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 7/2
5:20 pm-11:56 pm
1 stop5h 36m
Boise Air Term. Gowen Fld
Thu 7/9
2:45 pm-8:37 pm
1 stop6h 52m
$151
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 2/26
4:42 pm-11:45 pm
1 stop7h 03m
Boise Air Term. Gowen Fld
Mon 3/2
10:41 am-7:04 pm
1 stop8h 23m
$174
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 2/26
7:52 pm-10:09 pm
Nonstop2h 17m
Boise Air Term. Gowen Fld
Mon 3/2
7:15 am-9:37 am
Nonstop2h 22m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 4/30
9:55 pm-1:00 am
Nonstop2h 05m
Boise Air Term. Gowen Fld
Sun 5/3
3:25 pm-4:30 pm
Nonstop2h 05m
$177
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 4/29
3:50 pm-12:17 am
1 stop7h 27m
Boise Air Term. Gowen Fld
Sat 5/2
8:00 am-12:07 pm
1 stop5h 07m
$177
PhoenixBoise
AZA - BOI
AZABOI
Phoenix-Mesa Gateway
Fri 2/13
2:38 pm-4:51 pm
Nonstop2h 13m
Boise Air Term. Gowen Fld
Mon 2/16
5:41 pm-7:58 pm
Nonstop2h 17m
$182
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Fri 4/10
9:55 pm-1:00 am
Nonstop2h 05m
Boise Air Term. Gowen Fld
Sat 4/11
7:05 am-8:10 am
Nonstop2h 05m
$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-BOI
PHX-GEG
PHX-SUN
PHX-IDA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix to Idaho
PH1-USID
AZA-BOI
PHX-BOI
PHX-GEG
PHX-SUN
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 3, 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 January 31, 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 3, 2026.
The most flights from PH1 to USID are scheduled on a Friday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 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 3, 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.
Entertainment
7.0
Food
7.1
Comfort
7.8
Boarding
8.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.1
Comfort
7.8
Boarding
8.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.1
Comfort
7.8
Boarding
8.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.1
Comfort
7.8
Boarding
8.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.1
Comfort
7.8
Boarding
8.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.1
Comfort
7.8
Boarding
8.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Phoenix to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
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 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$145 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$81 | Average$416 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$136 | Average$197 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$141 | Average$238 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$147 | Average$252 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$156 | Average$360 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$247 | Average$445 | FlexibilityNo cancel fee | On-time69% |