$141+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Sep 23 — Sep 301
Round-trip
1 adult, Economy
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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 August 24, 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 August 24, 2026.
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am -
1 stop8h 24m
Sat 10/172:02 pm -
1 stop7h 15m
Deal found 8/21![American Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 8/24. 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.
Fri 9/256:52 pm -
1 stop7h 06m
Tue 9/295:30 am -
1 stop7h 12m
Deal found 8/24![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:37 am -
1 stop8h 56m
Thu 11/262:18 pm -
1 stop6h 58m
Deal found 8/21![Delta logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:48 pm -
1 stop9h 23m
Tue 9/227:24 pm -
1 stop17h 21m
Deal found 8/19![Alaska Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Tue 10/137:06 am -
1 stop7h 36m
Tue 10/201:43 pm -
1 stop8h 28m
Deal found 8/20![American Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:16 pm -
2 stops10h 55m
Sat 10/315:00 am -
1 stop7h 46m
Deal found 8/19![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 8/24. 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.
Fri 9/186:59 pm -
1 stop7h 00m
Fri 9/257:19 pm -
1 stop8h 31m
Deal found 8/24![Delta logo]()
$347
This Southwest deal was found by Cheapflights users on 8/23. 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 11/41:25 pm -
2 stops11h 25m
Tue 11/106:40 am -
2 stops11h 45m
Deal found 8/23![Southwest logo]()
$351
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop7h 18m
Sat 10/176:25 am -
2 stops10h 59m
Deal found 8/20![United Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:05 am -
1 stop11h 09m
Fri 9/185:14 pm -
1 stop9h 51m
Deal found 8/19![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 8/23. 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.
Wed 9/166:59 pm -
1 stop7h 00m
Sun 9/205:59 pm -
1 stop9h 51m
Deal found 8/23![Delta logo]()
$353
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/236:31 pm -
1 stop8h 44m
Wed 1/62:15 pm -
1 stop6h 56m
Deal found 8/21![American Airlines logo]()
$355
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 August 24, 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 August 24, 2026.
This Delta deal was found by Cheapflights users on 8/24. 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.
Thu 10/156:49 pm -
1 stop7h 10m
Thu 10/227:13 pm -
1 stop8h 31m
Deal found 8/24![Delta logo]()
$311
This Expedia deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:59 pm -
1 stop16h 57m
Mon 9/288:25 pm -
1 stop17h 20m
Deal found 8/19![Alaska Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 8/24. 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 10/155:10 pm -
2 stops9h 50m
Thu 10/223:50 pm -
1 stop7h 10m
Deal found 8/24![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:00 am -
1 stop7h 38m
Fri 11/62:35 pm -
1 stop7h 04m
Deal found 8/20![United Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 8/23. 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.
Sat 1/3011:00 am -
2 stops12h 46m
Mon 2/87:29 am -
1 stop8h 09m
Deal found 8/23![American Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 8/24. 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.
Fri 9/256:52 pm -
1 stop7h 06m
Tue 9/295:30 am -
1 stop7h 12m
Deal found 8/24![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:02 am -
1 stop10h 18m
Fri 10/306:09 am -
1 stop9h 29m
Deal found 8/19![Alaska Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 8/23. 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 9/186:59 pm -
1 stop7h 00m
Mon 9/217:19 pm -
1 stop8h 31m
Deal found 8/23![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:30 am -
1 stop11h 05m
Tue 9/227:30 am -
2 stops10h 10m
Deal found 8/21![Southwest logo]()
$406
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am -
1 stop10h 50m
Tue 10/207:25 pm -
1 stop7h 19m
Deal found 8/20![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:05 am -
2 stops14h 54m
Wed 10/282:51 pm -
1 stop6h 48m
Deal found 8/21![United Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 8/23. 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.
Mon 9/214:05 pm -
2 stops10h 15m
Mon 9/286:00 am -
1 stop8h 55m
Deal found 8/23![Southwest logo]()
$407
This Alaska Airlines deal was found by Cheapflights users on 8/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:49 pm -
1 stop8h 07m
Wed 11/114:39 pm -
1 stop9h 53m
Deal found 8/23![Alaska Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:45 am -
2 stops13h 30m
Wed 11/1112:31 pm -
1 stop8h 41m
Deal found 8/23![United Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/47:25 am -
1 stop7h 44m
Tue 2/912:40 pm -
1 stop8h 12m
Deal found 8/20![American Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:55 pm -
1 stop7h 14m
Thu 9/102:05 pm -
1 stop6h 51m
Deal found 8/19![Delta logo]()
$375
This Southwest deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:05 pm -
2 stops9h 50m
Mon 9/282:55 pm -
1 stop6h 55m
Deal found 8/19![Southwest logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:24 pm -
2 stops12h 35m
Sat 10/172:44 pm -
1 stop6h 36m
Deal found 8/22![United Airlines logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:17 pm -
1 stop9h 36m
Tue 10/201:57 pm -
2 stops36h 44m
Deal found 8/19![Alaska Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:30 am -
1 stop7h 58m
Mon 9/145:49 pm -
1 stop9h 01m
Deal found 8/22![Delta logo]()
$375
This Expedia deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
1 stop10h 20m
Tue 10/63:57 pm -
1 stop21h 17m
Deal found 8/22![Alaska Airlines logo]()
$449
This Southwest deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:05 pm -
2 stops10h 15m
Tue 9/156:15 am -
2 stops11h 25m
Deal found 8/22![Southwest logo]()
$454
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/243:30 pm -
1 stop7h 41m
Sat 1/302:29 pm -
1 stop6h 17m
Deal found 8/21![United Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 8/23. 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 9/77:05 am -
1 stop8h 15m
Fri 9/116:45 am -
1 stop8h 19m
Deal found 8/23![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:41 pm -
1 stop18h 25m
Thu 10/2911:48 am -
1 stop15h 53m
Deal found 8/22![Alaska Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:34 am -
2 stops13h 41m
Thu 10/292:34 pm -
1 stop7h 05m
Deal found 8/22![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/79:42 am -
2 stops11h 58m
Sat 2/131:30 pm -
2 stops9h 21m
Deal found 8/22![Delta logo]()
$433
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Wed 10/1411:05 am -
2 stops8h 44m
Fri 10/1612:20 pm -
1 stop7h 09m
Deal found 8/24![United Airlines logo]()
$513
This Alaska Airlines deal was found by Cheapflights users on 8/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:41 pm -
1 stop18h 25m
Wed 10/1411:48 am -
1 stop15h 53m
Deal found 8/23![Alaska Airlines logo]()
$539
This Delta deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:58 pm -
1 stop8h 32m
Tue 9/812:38 pm -
1 stop9h 02m
Deal found 8/21![Delta logo]()
$454
Last-minute flights from Philadelphia to IdahoDiscover last-minute flight deals from Philadelphia to Idaho. Data last updated August 24, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho. Data last updated August 24, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:12 pm -
1 stop9h 15m
Tue 9/151:50 pm -
1 stop7h 31m
Deal found 8/22![American Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 8/23. 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.
Wed 9/96:30 am -
1 stop7h 58m
Mon 9/145:49 pm -
1 stop9h 01m
Deal found 8/23![Delta logo]()
$375
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:48 pm -
1 stop9h 23m
Tue 9/227:24 pm -
1 stop17h 21m
Deal found 8/19![Alaska Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:05 am -
1 stop11h 09m
Fri 9/185:14 pm -
1 stop9h 51m
Deal found 8/19![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 8/23. 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.
Wed 9/166:59 pm -
1 stop7h 00m
Sun 9/205:59 pm -
1 stop9h 51m
Deal found 8/23![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 8/24. 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.
Fri 9/186:59 pm -
1 stop7h 00m
Fri 9/257:19 pm -
1 stop8h 31m
Deal found 8/24![Delta logo]()
$347
This Orbitz deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:59 pm -
1 stop16h 57m
Fri 9/258:25 pm -
1 stop17h 20m
Deal found 8/20![Alaska Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 8/24. 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 9/216:52 pm -
1 stop7h 06m
Mon 9/286:44 pm -
1 stop9h 21m
Deal found 8/24![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
2 stops9h 40m
Sat 9/2612:55 pm -
1 stop8h 00m
Deal found 8/20![Southwest logo]()
$370
This Delta deal was found by Cheapflights users on 8/24. 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.
Fri 9/256:52 pm -
1 stop7h 06m
Tue 9/295:30 am -
1 stop7h 12m
Deal found 8/24![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 8/24. 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.
Fri 9/254:05 pm -
2 stops9h 50m
Tue 9/2912:35 pm -
1 stop9h 20m
Deal found 8/24![Southwest logo]()
$363
This Delta deal was found by Cheapflights users on 8/23. 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.
Sun 9/277:05 am -
1 stop8h 15m
Wed 9/307:30 pm -
1 stop7h 20m
Deal found 8/23![Delta logo]()
$355
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 August 24, 2026.
Search for one-way flight options from Philadelphia to Idaho. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:10 pm -
2 stops21h 45m
Deal found 8/22![Multiple Airlines logo]()
$141
This Trip.com deal was found by Cheapflights users on 8/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am -
1 stop10h 24m
Deal found 8/23![Alaska Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:32 pm -
2 stops46h 23m
Deal found 8/23![Frontier logo]()
$151
This Delta deal was found by Cheapflights users on 8/24. 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 10/127:16 pm -
1 stop6h 43m
Deal found 8/24![Delta logo]()
$156
This United Airlines deal was found by Cheapflights users on 8/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:16 pm -
2 stops10h 16m
Deal found 8/23![United Airlines logo]()
$161
This Delta deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:00 am -
1 stop10h 50m
Deal found 8/21![Delta logo]()
$171
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:30 pm -
2 stops10h 44m
Deal found 8/19![United Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:54 pm -
1 stop8h 43m
Deal found 8/19![Delta logo]()
$183
This Delta deal was found by Cheapflights users on 8/23. 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.
Sun 9/277:05 am -
1 stop8h 15m
Deal found 8/23![Delta logo]()
$185
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:10 am -
1 stop7h 18m
Deal found 8/22![United Airlines logo]()
$185
This KAYAK deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:05 am -
1 stop8h 15m
Deal found 8/19![Delta logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:22 pm -
3 stops52h 51m
Deal found 8/21![Multiple Airlines logo]()
$193
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 August 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (American Airlines) |
One-way from | $141 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $476 |
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 7,457,451 searches. Data last updated August 24, 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
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Thu 10/15
6:49 pm-11:59 pm
1 stop7h 10m
Boise Air Term. Gowen Fld
Thu 10/22
7:13 pm-5:44 am
1 stop8h 31m
$311
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Fri 9/25
6:59 pm-9:56 am
1 stop16h 57m
Boise Air Term. Gowen Fld
Mon 9/28
8:25 pm-3:45 pm
1 stop17h 20m
$329
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Fri 9/25
6:52 pm-11:58 pm
1 stop7h 06m
Boise Air Term. Gowen Fld
Tue 9/29
5:30 am-2:42 pm
1 stop7h 12m
$329
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Fri 9/18
6:59 pm-11:59 pm
1 stop7h 00m
Boise Air Term. Gowen Fld
Mon 9/21
7:19 pm-5:50 am
1 stop8h 31m
$329
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Thu 10/15
7:00 am-2:50 pm
1 stop10h 50m
Spokane
Tue 10/20
7:25 pm-5:44 am
1 stop7h 19m
$341
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Tue 10/27
7:02 am-3:20 pm
1 stop10h 18m
Idaho Falls Fanning Field
Fri 10/30
6:09 am-5:38 pm
1 stop9h 29m
$359
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Fri 9/4
6:55 pm-11:09 pm
1 stop7h 14m
Spokane
Thu 9/10
2:05 pm-11:56 pm
1 stop6h 51m
$375
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Wed 9/9
6:30 am-11:28 am
1 stop7h 58m
Spokane
Mon 9/14
5:49 pm-5:50 am
1 stop9h 01m
$375
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Thu 10/15
5:10 pm-1:00 am
2 stops9h 50m
Boise Air Term. Gowen Fld
Thu 10/22
3:50 pm-1:00 am
1 stop7h 10m
$404
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 9/12
6:30 am-2:35 pm
1 stop11h 05m
Spokane
Tue 9/22
7:30 am-8:40 pm
2 stops10h 10m
$406
Showing 1-10 of 58 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-BOI
PHL-GEG
PHL-IDA
PHL-JAC
PHL-SUN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Philadelphia to Idaho
PHL-USID
PHL-BOI
PHL-GEG
PHL-IDA
PHL-JAC
What is the cheapest month to book a flight from Philadelphia to Idaho?
Currently, April is the cheapest month in which you can book a flight from Philadelphia to Idaho (average of $423). Flying from Philadelphia to Idaho in June is currently the most expensive (average of $615). 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.
How much does it cost to fly round-trip from Philadelphia to Idaho?
Airfare is typical for this route at the moment.
Philadelphia to Idaho flights typically cost between $300 and $522 in October.The cheapest round-trip price found within the last 5 days was $311 on American Airlines (Oct 14-Oct 17).
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 84 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 August 24, 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
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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
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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 August 24, 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 4 airlines flying from Philadelphia to Idaho
Discover the top 4 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 7,457,451 searches. Data last updated August 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$200 | Average$518 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$297 | Average$540 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$300 | Average$594 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$381 | Average$556 | FlexibilityNo cancel fee | On-time63% |