$90+ Cheap flights from Phoenix to Idaho
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Jun 3 — Jun 101
Round-trip
1 adult, Economy
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Cheapest flights from Phoenix to IdahoExplore the most affordable flight options available from Phoenix to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 4, 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 May 4, 2026.
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Wed 6/312:33 pm
GEG
- PHX
1 stop10h 56m
Frontier
Deal found 4/29![Frontier logo]()
$200
This Frontier deal was found by Cheapflights users on 5/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Sun 5/171:22 pm
BOI
- PHX
1 stop11h 07m
Frontier
Deal found 5/1![Frontier logo]()
$206
This Expedia deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 6/45:15 am
PHX
- BOI
1 stop6h 23m
Multiple Airlines
Mon 6/86:08 pm
BOI
- PHX
Nonstop2h 09m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$209
This Expedia deal was found by Cheapflights users on 5/1. 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.
Thu 6/186:40 am
PHX
- BOI
1 stop4h 50m
Frontier
Tue 6/231:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 5/1![Frontier logo]()
$210
This Expedia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:59 pm
PHX
- BOI
Nonstop2h 12m
Multiple Airlines
Thu 6/41:33 pm
BOI
- PHX
1 stop19h 11m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:40 am
PHX
- GEG
1 stop12h 15m
Multiple Airlines
Sun 5/318:45 pm
GEG
- PHX
1 stop26h 39m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$214
This Expedia deal was found by Cheapflights users on 5/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop19h 19m
Frontier
Deal found 5/3![Frontier logo]()
$215
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/307:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Tue 6/26:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$217
This Expedia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:15 am
PHX
- BOI
1 stop6h 15m
Multiple Airlines
Mon 6/16:12 pm
BOI
- PHX
1 stop6h 44m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$219
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/295:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Fri 6/512:33 pm
GEG
- PHX
1 stop10h 56m
Frontier
Deal found 4/29![Frontier logo]()
$221
This Expedia deal was found by Cheapflights users on 5/1. 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.
Thu 6/45:15 am
PHX
- BOI
1 stop6h 23m
Multiple Airlines
Sat 6/132:55 pm
BOI
- PHX
Nonstop2h 19m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$224
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Tue 6/21:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/29![Frontier logo]()
$225
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 May 4, 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 May 4, 2026.
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:04 pm
PHX
- BOI
1 stop4h 00m
Delta
Wed 6/312:55 pm
BOI
- PHX
1 stop4h 04m
Delta
Deal found 4/29![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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.
Wed 6/36:00 am
PHX
- BOI
1 stop8h 34m
Alaska Airlines
Sat 6/66:07 pm
BOI
- PHX
1 stop6h 52m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:55 am
PHX
- GEG
1 stop5h 10m
Southwest
Wed 6/36:30 am
GEG
- PHX
1 stop5h 10m
Southwest
Deal found 4/29![Southwest logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:40 am
PHX
- TWF
1 stop27h 20m
Multiple Airlines
Mon 5/181:45 pm
TWF
- PHX
2 stops24h 35m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Thu 5/289:00 am
AZA
- BOI
1 stop5h 10m
Allegiant Air
Thu 6/43:07 pm
BOI
- AZA
1 stop5h 17m
Allegiant Air
Deal found 5/2![Allegiant Air logo]()
$344
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 7/136:00 am
PHX
- WYS
1 stop6h 32m
United Airlines
Mon 8/312:02 pm
WYS
- PHX
1 stop7h 27m
United Airlines
Deal found 4/30![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/266:05 am
PHX
- BOI
1 stop4h 51m
Delta
Wed 5/276:00 pm
BOI
- PHX
1 stop6h 18m
Delta
Deal found 4/29![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:40 pm
PHX
- BOI
1 stop5h 30m
Southwest
Mon 6/83:25 pm
BOI
- PHX
2 stops6h 35m
Southwest
Deal found 5/3![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 5/2. 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 6/175:35 pm
PHX
- GEG
1 stop6h 20m
Delta
Tue 6/235:10 pm
GEG
- PHX
1 stop6h 26m
Delta
Deal found 5/2![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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.
Fri 5/297:53 pm
PHX
- GEG
1 stop25h 52m
Alaska Airlines
Sun 5/317:01 am
GEG
- PHX
1 stop16h 55m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:40 pm
PHX
- BOI
1 stop5h 30m
Southwest
Wed 6/102:05 pm
BOI
- PHX
2 stops6h 20m
Southwest
Deal found 5/3![Southwest logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/23:54 pm
PHX
- BOI
1 stop7h 04m
Alaska Airlines
Wed 6/36:07 pm
BOI
- PHX
1 stop6h 52m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:05 am
PHX
- SUN
1 stop4h 52m
Delta
Sun 5/1712:39 pm
SUN
- PHX
1 stop4h 20m
Delta
Deal found 4/30![Delta logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Sun 5/319:00 am
AZA
- BOI
1 stop5h 10m
Allegiant Air
Thu 6/43:07 pm
BOI
- AZA
1 stop5h 17m
Allegiant Air
Deal found 5/2![Allegiant Air logo]()
$348
This Southwest deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 7/35:45 am
PHX
- BOI
1 stop4h 40m
Southwest
Fri 7/175:55 pm
BOI
- PHX
Nonstop2h 10m
Southwest
Deal found 4/30![Southwest logo]()
$296
This Delta deal was found by Cheapflights users on 5/2. 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.
Fri 7/35:18 pm
PHX
- BOI
1 stop5h 51m
Delta
Tue 7/76:42 pm
BOI
- PHX
1 stop5h 49m
Delta
Deal found 5/2![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/2812:04 pm
PHX
- GEG
1 stop9h 41m
Alaska Airlines
Sun 5/315:00 am
GEG
- PHX
1 stop4h 51m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 7/177:45 am
PHX
- IDA
1 stop7h 15m
Multiple Airlines
Fri 7/2410:47 pm
IDA
- PHX
2 stops17h 56m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 5/1. 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.
Sun 6/77:05 pm
PHX
- BOI
1 stop5h 15m
Southwest
Wed 6/102:05 pm
BOI
- PHX
2 stops6h 20m
Southwest
Deal found 5/1![Southwest logo]()
$311
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:05 pm
PHX
- BOI
1 stop6h 00m
Delta
Sun 7/191:05 pm
BOI
- PHX
1 stop3h 59m
Delta
Deal found 5/3![Delta logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/57:57 am
AZA
- BOI
2 stops28h 20m
Allegiant Air
Sun 6/213:07 pm
BOI
- AZA
1 stop8h 39m
Allegiant Air
Deal found 4/29![Allegiant Air logo]()
$402
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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.
Thu 5/146:00 am
PHX
- WYS
1 stop6h 28m
United Airlines
Mon 5/182:03 pm
WYS
- PHX
1 stop7h 16m
United Airlines
Deal found 4/29![United Airlines logo]()
$444
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1810:50 pm
PHX
- GEG
Nonstop2h 30m
Southwest
Wed 6/245:00 am
GEG
- PHX
1 stop7h 40m
Southwest
Deal found 5/3![Southwest logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Sat 6/66:05 am
AZA
- BOI
2 stops29h 33m
Multiple Airlines
Sun 6/143:07 pm
BOI
- AZA
1 stop8h 39m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 7/196:00 am
PHX
- JAC
1 stop6h 48m
United Airlines
Fri 7/248:00 am
JAC
- PHX
1 stop7h 42m
United Airlines
Deal found 4/29![United Airlines logo]()
$445
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:05 am
PHX
- WYS
1 stop5h 20m
Delta
Fri 6/121:10 pm
WYS
- PHX
2 stops7h 05m
Delta
Deal found 5/3![Delta logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/57:57 am
AZA
- BOI
2 stops28h 20m
Allegiant Air
Thu 6/113:07 pm
BOI
- AZA
1 stop8h 39m
Allegiant Air
Deal found 5/4![Allegiant Air logo]()
$439
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/16:00 am
PHX
- JAC
1 stop6h 48m
United Airlines
Mon 6/84:23 pm
JAC
- PHX
1 stop6h 36m
United Airlines
Deal found 5/4![United Airlines logo]()
$448
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 7/157:20 am
PHX
- GEG
1 stop5h 09m
Alaska Airlines
Sun 7/265:00 am
GEG
- PHX
1 stop4h 49m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$418
This Delta deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/29:33 am
PHX
- SUN
1 stop4h 01m
Delta
Sun 6/77:20 am
SUN
- PHX
1 stop5h 55m
Delta
Deal found 5/4![Delta logo]()
$315
Last-minute flights from Phoenix to IdahoDiscover last-minute flight deals from Phoenix to Idaho. Data last updated May 4, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Idaho. Data last updated May 4, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 5/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:15 am
PHX
- BOI
1 stop6h 12m
Frontier
Sun 5/171:22 pm
BOI
- PHX
1 stop11h 07m
Frontier
Deal found 5/1![Frontier logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:27 pm
PHX
- GEG
1 stop21h 28m
Multiple Airlines
Sun 6/78:47 pm
GEG
- PHX
1 stop14h 36m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$225
This Expedia deal was found by Cheapflights users on 5/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Sun 5/241:25 pm
BOI
- PHX
1 stop19h 19m
Frontier
Deal found 5/3![Frontier logo]()
$215
This Priceline deal was found by Cheapflights users on 5/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Thu 6/41:33 pm
BOI
- PHX
1 stop8h 37m
Frontier
Deal found 5/3![Frontier logo]()
$235
This Expedia deal was found by Cheapflights users on 5/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:15 am
PHX
- BOI
1 stop6h 15m
Multiple Airlines
Mon 6/16:08 pm
BOI
- PHX
Nonstop2h 09m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$209
This Expedia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:59 pm
PHX
- BOI
Nonstop2h 12m
Multiple Airlines
Thu 6/41:33 pm
BOI
- PHX
1 stop19h 11m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:40 am
PHX
- GEG
1 stop12h 15m
Multiple Airlines
Sun 5/318:45 pm
GEG
- PHX
1 stop26h 39m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$214
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/295:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Fri 6/512:33 pm
GEG
- PHX
1 stop10h 56m
Frontier
Deal found 4/29![Frontier logo]()
$221
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/307:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Tue 6/26:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 5/2. 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.
Sat 5/307:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Mon 6/16:08 pm
BOI
- PHX
Nonstop2h 09m
Alaska Airlines
Deal found 5/2![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/3012:45 pm
PHX
- BOI
1 stop8h 28m
Delta
Tue 6/23:23 pm
BOI
- PHX
1 stop4h 51m
Delta
Deal found 4/29![Delta logo]()
$237
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Tue 6/21:25 pm
BOI
- PHX
1 stop11h 04m
Frontier
Deal found 4/29![Frontier logo]()
$225
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 May 4, 2026.
Search for one-way flight options from Phoenix to Idaho. Find affordable one-way fares based on user searches. Data last updated May 4, 2026.
This Frontier deal was found by Cheapflights users on 5/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:15 am
PHX
- BOI
1 stop6h 15m
Frontier
Deal found 5/1![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:27 pm
PHX
- GEG
1 stop21h 28m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:40 am
PHX
- GEG
1 stop12h 15m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$98
This Super.com deal was found by Cheapflights users on 5/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:15 am
PHX
- GEG
1 stop6h 23m
Frontier
Deal found 5/2![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Tue 6/96:53 pm
PHX
- GEG
1 stop16h 43m
Frontier
Deal found 4/30![Frontier logo]()
$105
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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.
Tue 5/267:59 pm
PHX
- BOI
Nonstop2h 12m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$109
This Super.com deal was found by Cheapflights users on 5/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:53 pm
PHX
- GEG
1 stop16h 44m
Frontier
Deal found 5/3![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:40 am
PHX
- IDA
1 stop26h 10m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$115
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/256:40 am
PHX
- BOI
1 stop4h 50m
Frontier
Deal found 4/29![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sat 5/166:43 pm
PHX
- BOI
1 stop16h 44m
Frontier
Deal found 4/30![Frontier logo]()
$116
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:04 pm
PHX
- BOI
1 stop4h 00m
Delta
Deal found 4/29![Delta logo]()
$119
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/178:41 pm
PHX
- GEG
Nonstop2h 39m
American Airlines
Deal found 4/29![American Airlines logo]()
$119
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 May 4, 2026.
Round-trip from | $200 (Frontier) |
|---|---|
One-way from | $90 (Frontier) |
Popular in | December |
Cheapest in | January |
Average price | $301 |
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 May 4, 2026.
Use the filters below to find and compare flights from Phoenix to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 5/27
7:04 pm-12:04 am
1 stop4h 00m
Boise Air Term. Gowen Fld
Wed 6/3
12:55 pm-3:59 pm
1 stop4h 04m
$237
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Tue 5/26
6:05 am-11:56 am
1 stop4h 51m
Boise Air Term. Gowen Fld
Wed 5/27
6:00 pm-11:18 pm
1 stop6h 18m
$237
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Wed 6/3
6:00 am-3:34 pm
1 stop8h 34m
Boise Air Term. Gowen Fld
Sat 6/6
6:07 pm-11:59 pm
1 stop6h 52m
$257
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Wed 5/27
8:55 am-2:05 pm
1 stop5h 10m
Spokane
Wed 6/3
6:30 am-11:40 am
1 stop5h 10m
$257
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Wed 6/17
5:35 pm-11:55 pm
1 stop6h 20m
Spokane
Tue 6/23
5:10 pm-11:36 pm
1 stop6h 26m
$257
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 6/4
6:40 pm-1:10 am
1 stop5h 30m
Boise Air Term. Gowen Fld
Mon 6/8
3:25 pm-9:00 pm
2 stops6h 35m
$262
PhoenixHailey
PHX - SUN
PHXSUN
Phoenix Sky Harbor Intl
Thu 5/14
6:05 am-11:57 am
1 stop4h 52m
Hailey Sun Valley-Friedman
Sun 5/17
12:39 pm-3:59 pm
1 stop4h 20m
$271
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Thu 6/4
6:40 pm-1:10 am
1 stop5h 30m
Boise Air Term. Gowen Fld
Wed 6/10
2:05 pm-7:25 pm
2 stops6h 20m
$272
PhoenixBoise
PHX - BOI
PHXBOI
Phoenix Sky Harbor Intl
Fri 7/3
5:18 pm-12:09 am
1 stop5h 51m
Boise Air Term. Gowen Fld
Tue 7/7
6:42 pm-11:31 pm
1 stop5h 49m
$277
PhoenixSpokane
PHX - GEG
PHXGEG
Phoenix Sky Harbor Intl
Fri 5/29
7:53 pm-9:45 pm
1 stop25h 52m
Spokane
Sun 5/31
7:01 am-11:56 pm
1 stop16h 55m
$285
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Phoenix to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Phoenix with our price prediction graph.
PHX-BOI
PHX-GEG
PHX-TWF
AZA-BOI
PHX-WYS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix to Idaho
PH1-USID
PHX-BOI
PHX-GEG
PHX-TWF
AZA-BOI
How far ahead should I book a flight from Phoenix to Idaho?
Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Phoenix to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Phoenix to Idaho?
Currently, August is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $78). Flying from Phoenix to Idaho in January is currently the most expensive (average of $122). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHX to ID?
Find hourly flight availability from Phoenix to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 4, 2026.
It’s typically best to fly out from Phoenix to Idaho in the afternoon. Doing so could potentially save you 26% 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 May 2, 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 May 4, 2026.
The most flights from PH1 to USID are scheduled on a Sunday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 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 May 4, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, andDelta from Phoenix to Idaho to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
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 May 4, 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 May 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$402 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$82 | Average$166 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$124 | Average$198 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$137 | Average$243 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$147 | Average$262 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$157 | Average$359 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$290 | Average$456 | FlexibilityNo cancel fee | On-time69% |