$140+ Cheap flights from Philadelphia (PHL) 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Jun 27 — Jul 41
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Idaho with Cheapflights
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Cheapest flights from Philadelphia to IdahoExplore the most affordable flight options available from Philadelphia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 28, 2026.
Explore the most affordable flight options available from Philadelphia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 28, 2026.
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/227:00 am
PHL
- GEG
1 stop8h 16m
Delta
Sat 8/295:39 pm
GEG
- PHL
1 stop9h 01m
Delta
Deal found 5/26![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:05 am
PHL
- BOI
1 stop10h 06m
Delta
Thu 7/237:28 pm
BOI
- PHL
1 stop8h 01m
Delta
Deal found 5/23![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/291:30 pm
PHL
- BOI
2 stops10h 07m
United Airlines
Sat 9/512:24 pm
BOI
- PHL
1 stop7h 03m
United Airlines
Deal found 5/25![United Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:55 pm
PHL
- GEG
1 stop8h 00m
Delta
Wed 7/225:37 pm
GEG
- PHL
1 stop8h 52m
Delta
Deal found 5/26![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/85:40 am
PHL
- BOI
1 stop7h 17m
Delta
Wed 7/157:28 pm
BOI
- PHL
1 stop8h 01m
Delta
Deal found 5/27![Delta logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 9/14:48 pm
PHL
- GEG
1 stop9h 23m
Alaska Airlines
Wed 9/25:12 am
GEG
- PHL
1 stop7h 33m
Alaska Airlines
Deal found 5/26![Alaska Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 9/229:19 am
PHL
- JAC
1 stop8h 26m
American Airlines
Wed 9/303:41 pm
JAC
- PHL
1 stop6h 31m
American Airlines
Deal found 5/26![American Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 7/105:40 am
PHL
- BOI
1 stop7h 17m
Delta
Thu 7/167:28 pm
BOI
- PHL
1 stop8h 01m
Delta
Deal found 5/25![Delta logo]()
$314
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/202:21 pm
PHL
- JAC
1 stop7h 44m
Delta
Wed 9/307:40 am
JAC
- PHL
2 stops9h 39m
Delta
Deal found 5/26![Delta logo]()
$316
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 8/226:25 am
PHL
- BOI
1 stop7h 03m
United Airlines
Sat 8/2910:36 am
BOI
- PHL
1 stop6h 49m
United Airlines
Deal found 5/27![United Airlines logo]()
$317
This American Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/34:22 pm
PHL
- BOI
1 stop9h 00m
American Airlines
Sat 7/113:12 pm
BOI
- PHL
1 stop7h 34m
American Airlines
Deal found 5/23![American Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 9/229:35 am
PHL
- JAC
2 stops12h 30m
Delta
Wed 9/307:40 am
JAC
- PHL
2 stops9h 39m
Delta
Deal found 5/26![Delta logo]()
$321
Best flights from Philadelphia to IdahoDiscover carefully curated flight deals from Philadelphia to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 28, 2026.
Discover carefully curated flight deals from Philadelphia to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 28, 2026.
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/227:00 am
PHL
- GEG
1 stop8h 16m
Delta
Sat 8/295:39 pm
GEG
- PHL
1 stop9h 01m
Delta
Deal found 5/26![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:45 pm
PHL
- BOI
2 stops9h 55m
Southwest
Mon 9/217:30 am
BOI
- PHL
2 stops11h 35m
Southwest
Deal found 5/24![Southwest logo]()
$394
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 9/156:25 am
PHL
- BOI
1 stop7h 01m
United Airlines
Wed 9/167:05 pm
BOI
- PHL
2 stops15h 18m
United Airlines
Deal found 5/25![United Airlines logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/185:46 pm
PHL
- JAC
1 stop21h 44m
Alaska Airlines
Sat 8/223:10 pm
JAC
- PHL
2 stops22h 35m
Alaska Airlines
Deal found 5/26![Alaska Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:55 pm
PHL
- GEG
1 stop8h 00m
Delta
Wed 7/225:37 pm
GEG
- PHL
1 stop8h 52m
Delta
Deal found 5/24![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 7/227:05 am
PHL
- GEG
1 stop8h 06m
Delta
Mon 7/277:08 pm
GEG
- PHL
1 stop8h 07m
Delta
Deal found 5/25![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 7/105:40 am
PHL
- BOI
1 stop7h 17m
Delta
Thu 7/167:28 pm
BOI
- PHL
1 stop8h 01m
Delta
Deal found 5/25![Delta logo]()
$314
This United Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:05 am
PHL
- WYS
1 stop7h 21m
United Airlines
Fri 8/211:55 pm
WYS
- PHL
1 stop7h 50m
United Airlines
Deal found 5/24![United Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 9/24:48 pm
PHL
- BOI
2 stops18h 21m
Alaska Airlines
Tue 9/84:20 pm
BOI
- PHL
1 stop11h 20m
Alaska Airlines
Deal found 5/26![Alaska Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” 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 9/236:20 am
PHL
- BOI
1 stop8h 43m
Delta
Sun 9/275:59 pm
BOI
- PHL
1 stop9h 51m
Delta
Deal found 5/24![Delta logo]()
$314
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 8/86:30 am
PHL
- BOI
2 stops10h 00m
Southwest
Wed 8/122:40 pm
BOI
- PHL
1 stop7h 10m
Southwest
Deal found 5/27![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/234:45 pm
PHL
- BOI
2 stops10h 30m
Southwest
Tue 7/287:10 am
BOI
- PHL
1 stop7h 00m
Southwest
Deal found 5/27![Southwest logo]()
$428
This United Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/228:20 am
PHL
- WYS
2 stops9h 46m
United Airlines
Sat 8/291:55 pm
WYS
- PHL
2 stops9h 04m
United Airlines
Deal found 5/26![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 7/235:40 am
PHL
- BOI
1 stop7h 17m
Delta
Tue 7/282:50 pm
BOI
- PHL
1 stop7h 06m
Delta
Deal found 5/25![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 10/277:00 am
PHL
- IDA
1 stop10h 35m
Alaska Airlines
Wed 10/286:09 am
IDA
- PHL
1 stop9h 30m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$459
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 7/234:45 pm
PHL
- GEG
2 stops10h 50m
Southwest
Mon 7/275:25 am
GEG
- PHL
2 stops11h 20m
Southwest
Deal found 5/26![Southwest logo]()
$437
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 10/263:30 pm
PHL
- JAC
1 stop7h 32m
United Airlines
Sun 11/110:51 am
JAC
- PHL
1 stop6h 34m
United Airlines
Deal found 5/25![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/262:31 pm
PHL
- JAC
1 stop7h 40m
Delta
Wed 9/27:40 am
JAC
- PHL
1 stop8h 07m
Delta
Deal found 5/25![Delta logo]()
$365
This Travelocity deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:46 pm
PHL
- IDA
1 stop21h 20m
Alaska Airlines
Mon 7/204:14 pm
IDA
- PHL
2 stops17h 28m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$504
This Southwest deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:35 pm
PHL
- GEG
2 stops10h 30m
Southwest
Tue 6/302:55 pm
GEG
- PHL
1 stop7h 05m
Southwest
Deal found 5/24![Southwest logo]()
$461
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 8/291:49 pm
PHL
- JAC
1 stop8h 22m
Delta
Fri 9/48:25 am
JAC
- PHL
1 stop8h 24m
Delta
Deal found 5/23![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/41:45 pm
PHL
- GEG
2 stops11h 20m
Southwest
Tue 8/111:55 pm
GEG
- PHL
1 stop6h 55m
Southwest
Deal found 5/25![Southwest logo]()
$463
This United Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” 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 10/278:00 am
PHL
- SUN
1 stop7h 44m
United Airlines
Sat 10/312:29 pm
SUN
- PHL
1 stop6h 17m
United Airlines
Deal found 5/24![United Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 9/910:38 am
PHL
- JAC
2 stops10h 19m
Delta
Tue 9/151:05 pm
JAC
- PHL
2 stops9h 51m
Delta
Deal found 5/25![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/226:25 am
PHL
- IDA
1 stop7h 13m
United Airlines
Fri 8/282:25 pm
IDA
- PHL
1 stop7h 20m
United Airlines
Deal found 5/25![United Airlines logo]()
$514
This Alaska Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” 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 9/57:02 am
PHL
- SUN
1 stop28h 37m
Alaska Airlines
Mon 9/710:21 am
SUN
- PHL
2 stops27h 24m
Alaska Airlines
Deal found 5/24![Alaska Airlines logo]()
$583
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:40 am
PHL
- BOI
1 stop7h 18m
Delta
Mon 6/2911:45 pm
BOI
- PHL
1 stop7h 49m
Delta
Deal found 5/26![Delta logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/294:48 pm
PHL
- JAC
2 stops20h 27m
Alaska Airlines
Sat 9/53:10 pm
JAC
- PHL
2 stops22h 35m
Alaska Airlines
Deal found 5/25![Alaska Airlines logo]()
$585
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 6/196:51 pm
PHL
- BOI
1 stop7h 18m
Delta
Mon 6/226:42 pm
BOI
- PHL
1 stop9h 26m
Delta
Deal found 5/23![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 10/2711:39 am
PHL
- IDA
2 stops11h 29m
United Airlines
Wed 10/285:00 am
IDA
- PHL
2 stops10h 22m
United Airlines
Deal found 5/27![United Airlines logo]()
$601
Last-minute flights from Philadelphia to IdahoDiscover last-minute flight deals from Philadelphia to Idaho. Data last updated May 28, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho. Data last updated May 28, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:46 pm
PHL
- GEG
1 stop8h 13m
Alaska Airlines
Tue 6/305:00 am
GEG
- PHL
1 stop7h 23m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/196:51 pm
PHL
- BOI
1 stop7h 18m
Delta
Mon 6/226:42 pm
BOI
- PHL
1 stop9h 26m
Delta
Deal found 5/26![Delta logo]()
$349
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/194:17 pm
PHL
- GEG
1 stop9h 52m
American Airlines
Wed 6/2412:51 pm
GEG
- PHL
1 stop8h 45m
American Airlines
Deal found 5/25![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/2010:00 am
PHL
- GEG
1 stop8h 12m
United Airlines
Thu 6/257:25 pm
GEG
- PHL
1 stop9h 25m
United Airlines
Deal found 5/27![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/215:40 am
PHL
- BOI
1 stop7h 23m
Delta
Mon 6/226:42 pm
BOI
- PHL
1 stop9h 26m
Delta
Deal found 5/24![Delta logo]()
$327
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/225:35 pm
PHL
- GEG
1 stop8h 34m
American Airlines
Wed 6/2412:51 pm
GEG
- PHL
1 stop8h 45m
American Airlines
Deal found 5/26![American Airlines logo]()
$378
This Alaska Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:33 am
PHL
- BOI
1 stop8h 34m
Alaska Airlines
Fri 7/36:13 pm
BOI
- PHL
1 stop10h 00m
Alaska Airlines
Deal found 5/24![Alaska Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” 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 6/242:20 pm
PHL
- BOI
2 stops11h 00m
Southwest
Tue 6/304:05 pm
BOI
- PHL
1 stop6h 55m
Southwest
Deal found 5/23![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” 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 6/245:40 am
PHL
- BOI
1 stop7h 18m
Delta
Sat 7/46:43 am
BOI
- PHL
1 stop8h 52m
Delta
Deal found 5/24![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/256:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Wed 7/15:30 am
GEG
- PHL
1 stop9h 05m
Delta
Deal found 5/25![Delta logo]()
$389
This American Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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.
Sun 6/287:00 am
PHL
- JAC
1 stop10h 58m
American Airlines
Thu 7/211:50 am
JAC
- PHL
1 stop8h 27m
American Airlines
Deal found 5/27![American Airlines logo]()
$395
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/305:00 am
PHL
- JAC
1 stop7h 27m
American Airlines
Thu 7/211:50 am
JAC
- PHL
1 stop8h 27m
American Airlines
Deal found 5/25![American Airlines logo]()
$379
One-way flights from Philadelphia to IdahoSearch for one-way flight options from Philadelphia to Idaho. Find affordable one-way fares based on user searches. Data last updated May 28, 2026.
Search for one-way flight options from Philadelphia to Idaho. Find affordable one-way fares based on user searches. Data last updated May 28, 2026.
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/226:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/23![Delta logo]()
$140
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:09 pm
PHL
- BOI
1 stop6h 50m
Delta
Deal found 5/23![Delta logo]()
$140
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/185:15 am
PHL
- GEG
1 stop9h 21m
Delta
Deal found 5/27![Delta logo]()
$145
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:57 pm
PHL
- BOI
1 stop6h 49m
Delta
Deal found 5/27![Delta logo]()
$145
This United Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/2410:05 am
PHL
- JAC
1 stop7h 23m
United Airlines
Deal found 5/26![United Airlines logo]()
$151
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 7/282:32 pm
PHL
- JAC
1 stop7h 32m
Delta
Deal found 5/25![Delta logo]()
$156
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:15 am
PHL
- JAC
2 stops12h 42m
Delta
Deal found 5/26![Delta logo]()
$161
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/17:05 am
PHL
- GEG
1 stop8h 36m
Delta
Deal found 5/26![Delta logo]()
$170
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/269:25 am
PHL
- BOI
1 stop9h 19m
United Airlines
Deal found 5/25![United Airlines logo]()
$170
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/147:09 pm
PHL
- BOI
1 stop6h 50m
Delta
Deal found 5/26![Delta logo]()
$175
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/105:40 am
PHL
- GEG
1 stop8h 59m
Delta
Deal found 5/27![Delta logo]()
$178
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/27![Delta logo]()
$180
Find flight deals from Philadelphia to Idaho
Keep the following information in mind while searching for Philadelphia to Idaho flight deals. Data was last updated May 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Delta) |
One-way from | $140 (Delta) |
Popular in | June |
Cheapest in | September |
Average price | $440 |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia 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 28, 2026.
Use the filters below to find and compare flights from Philadelphia to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Sat 8/22
7:00 am-12:16 pm
1 stop8h 16m
Spokane
Sat 8/29
5:39 pm-5:40 am
1 stop9h 01m
$279
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Mon 7/13
6:55 pm-11:55 pm
1 stop8h 00m
Spokane
Wed 7/22
5:37 pm-5:29 am
1 stop8h 52m
$279
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Wed 7/22
7:05 am-12:11 pm
1 stop8h 06m
Spokane
Mon 7/27
7:08 pm-6:15 am
1 stop8h 07m
$309
PhiladelphiaBoise
PHL - BOI
PHLBOI
Philadelphia
Fri 7/10
5:40 am-10:57 am
1 stop7h 17m
Boise Air Term. Gowen Fld
Thu 7/16
7:28 pm-5:29 am
1 stop8h 01m
$314
PhiladelphiaBoise
PHL - BOI
PHLBOI
Philadelphia
Wed 9/23
6:20 am-1:03 pm
1 stop8h 43m
Boise Air Term. Gowen Fld
Sun 9/27
5:59 pm-5:50 am
1 stop9h 51m
$314
PhiladelphiaBoise
PHL - BOI
PHLBOI
Philadelphia
Thu 7/23
5:40 am-10:57 am
1 stop7h 17m
Boise Air Term. Gowen Fld
Tue 7/28
2:50 pm-11:56 pm
1 stop7h 06m
$339
PhiladelphiaJackson
PHL - JAC
PHLJAC
Philadelphia
Wed 8/26
2:31 pm-8:11 pm
1 stop7h 40m
Jackson Hole
Wed 9/2
7:40 am-5:47 pm
1 stop8h 07m
$365
PhiladelphiaJackson
PHL - JAC
PHLJAC
Philadelphia
Sat 8/29
1:49 pm-8:11 pm
1 stop8h 22m
Jackson Hole
Fri 9/4
8:25 am-6:49 pm
1 stop8h 24m
$365
PhiladelphiaJackson
PHL - JAC
PHLJAC
Philadelphia
Wed 9/9
10:38 am-6:57 pm
2 stops10h 19m
Jackson Hole
Tue 9/15
1:05 pm-12:56 am
2 stops9h 51m
$376
PhiladelphiaBoise
PHL - BOI
PHLBOI
Philadelphia
Mon 6/22
5:40 am-10:58 am
1 stop7h 18m
Boise Air Term. Gowen Fld
Mon 6/29
11:45 pm-9:34 am
1 stop7h 49m
$389
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Philadelphia to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Philadelphia with our price prediction graph.
PHL-GEG
PHL-BOI
PHL-JAC
PHL-WYS
PHL-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 Philadelphia to Idaho
PHL-USID
PHL-GEG
PHL-BOI
PHL-JAC
PHL-WYS
What is the cheapest month to book a flight from Philadelphia to Idaho?
Currently, August is the cheapest month in which you can book a flight from Philadelphia to Idaho (average of $131). Flying from Philadelphia to Idaho in December is currently the most expensive (average of $446). 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.
Weekly flight availability from Philadelphia to Idaho
Explore weekly flight availability from Philadelphia 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 28, 2026.
The most flights from PHL to USID are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Philadelphia to Idaho?
How far ahead should I book a flight from Philadelphia to Idaho?
The price you pay for your flight from Philadelphia to Idaho may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 28, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Philadelphia 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
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Philadelphia 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 Philadelphia to Idaho
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Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Idaho by cabin class
Find flights from Philadelphia to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Philadelphia and Idaho flights
Browse other Philadelphia and Idaho flight options. Last updated on May 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Idaho flights
Consider these flights traveling from Philadelphia to Idaho.
Top 5 airlines flying from Philadelphia to Idaho
Discover the top 5 airlines that operate flights from Philadelphia 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 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$131 | Average$291 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$175 | Average$500 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$283 | Average$506 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$593 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$350 | Average$556 | FlexibilityNo cancel fee | On-time63% |