$104+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Sep 10 — Sep 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Philadelphia to Idaho with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Philadelphia to Idaho
Cheapest
Best
Last-minute
One-way
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 11, 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 11, 2026.
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:00 am -
1 stop9h 31m
Wed 9/161:52 pm -
1 stop7h 39m
Deal found 8/10![American Airlines logo]()
$207
This Frontier deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 8/318:37 pm -
1 stop17h 52m
Tue 9/81:24 pm -
1 stop14h 15m
Deal found 8/7![Frontier logo]()
$213
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/67:00 am -
1 stop8h 18m
Wed 10/147:25 pm -
1 stop7h 12m
Deal found 8/11![Delta logo]()
$225
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/47:05 am -
1 stop11h 14m
Tue 9/85:49 pm -
1 stop9h 01m
Deal found 8/11![Delta logo]()
$254
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:54 pm -
1 stop7h 15m
Sat 9/126:45 am -
1 stop8h 14m
Deal found 8/10![Delta logo]()
$257
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 stop7h 59m
Sat 9/195:59 pm -
1 stop9h 51m
Deal found 8/11![Delta logo]()
$259
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:10 am -
1 stop6h 50m
Sat 9/128:00 am -
2 stops9h 50m
Deal found 8/10![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/184:05 pm -
2 stops9h 50m
Fri 9/252:55 pm -
1 stop6h 55m
Deal found 8/10![Southwest logo]()
$264
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/85:49 pm -
1 stop9h 01m
Deal found 8/11![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:16 am -
2 stops11h 50m
Sat 9/125:00 am -
2 stops11h 31m
Deal found 8/10![United Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/103:12 pm -
1 stop9h 15m
Wed 9/161:52 pm -
1 stop7h 39m
Deal found 8/10![American Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/53:48 pm -
1 stop7h 58m
Fri 9/116:00 am -
1 stop11h 55m
Deal found 8/9![United Airlines logo]()
$289
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 11, 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 11, 2026.
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/275:45 am -
1 stop8h 50m
Tue 11/31:40 pm -
1 stop8h 09m
Deal found 8/10![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/54:50 pm -
1 stop7h 10m
Sat 9/1211:05 am -
1 stop8h 50m
Deal found 8/8![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 10/276:15 am -
2 stops9h 30m
Tue 11/312:37 pm -
1 stop7h 01m
Deal found 8/7![United Airlines logo]()
$316
This American Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/1212:55 pm -
1 stop10h 26m
Tue 9/226:30 am -
1 stop11h 36m
Deal found 8/6![American Airlines logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/247:02 am -
1 stop10h 18m
Tue 10/276:09 am -
1 stop9h 29m
Deal found 8/10![Alaska Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/85:49 pm -
1 stop9h 01m
Deal found 8/11![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/56:25 am -
1 stop8h 13m
Sat 9/125:00 am -
2 stops9h 54m
Deal found 8/8![United Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 8/316:55 pm -
1 stop7h 04m
Sat 9/265:59 pm -
1 stop9h 51m
Deal found 8/8![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/114:05 pm -
1 stop8h 35m
Mon 9/147:30 am -
2 stops11h 40m
Deal found 8/8![Southwest logo]()
$350
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 1/256:10 am -
1 stop9h 47m
Wed 2/32:40 pm -
1 stop6h 06m
Deal found 8/10![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 11/195:00 am -
1 stop8h 00m
Tue 12/17:55 am -
2 stops11h 30m
Deal found 8/9![Southwest logo]()
$370
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
Sun 8/304:48 pm -
1 stop9h 23m
Thu 9/35:12 am -
1 stop7h 33m
Deal found 8/6![Alaska Airlines logo]()
$408
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/42:31 pm -
1 stop9h 59m
Tue 9/85:49 pm -
1 stop9h 01m
Deal found 8/7![Delta logo]()
$345
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/184:05 pm -
2 stops9h 50m
Mon 9/212:55 pm -
1 stop6h 55m
Deal found 8/6![Southwest logo]()
$374
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/109:30 am -
2 stops14h 15m
Wed 9/167:05 pm -
2 stops12h 57m
Deal found 8/10![United Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/47:05 am -
1 stop10h 13m
Fri 9/115:59 pm -
1 stop9h 51m
Deal found 8/7![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/51:10 pm -
2 stops10h 25m
Tue 9/156:00 am -
2 stops10h 00m
Deal found 8/6![Southwest logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/27:00 am -
1 stop30h 06m
Tue 10/611:48 am -
1 stop15h 53m
Deal found 8/10![Alaska Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 8/306:55 pm -
1 stop7h 04m
Tue 9/225:59 pm -
1 stop9h 51m
Deal found 8/8![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 8/276:16 am -
2 stops11h 07m
Wed 9/22:25 pm -
1 stop7h 19m
Deal found 8/8![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 8/268:20 am -
2 stops10h 56m
Wed 9/22:25 pm -
1 stop7h 19m
Deal found 8/8![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 8/306:55 pm -
1 stop7h 14m
Wed 9/25:30 am -
1 stop9h 17m
Deal found 8/10![Delta logo]()
$375
This Alaska Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 8/297:02 am -
1 stop30h 13m
Sat 9/52:10 pm -
1 stop23h 35m
Deal found 8/7![Alaska Airlines logo]()
$534
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/1511:04 am -
2 stops8h 45m
Thu 9/177:15 am -
1 stop8h 39m
Deal found 8/9![United Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 8/306:55 pm -
1 stop7h 04m
Fri 9/2511:10 pm -
1 stop9h 04m
Deal found 8/8![Delta logo]()
$382
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 1/121:00 pm -
2 stops10h 02m
Wed 1/1310:51 am -
2 stops10h 22m
Deal found 8/10![United Airlines logo]()
$452
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/248:00 am -
1 stop7h 24m
Tue 10/2710:35 am -
2 stops10h 56m
Deal found 8/10![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/308:00 am -
1 stop7h 53m
Thu 10/19:06 am -
1 stop10h 09m
Deal found 8/8![United Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 10/257:20 am -
1 stop6h 48m
Sat 10/311:13 pm -
2 stops9h 43m
Deal found 8/6![Delta logo]()
$521
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/25:20 am -
2 stops11h 18m
Tue 10/61:00 pm -
2 stops8h 50m
Deal found 8/10![Delta logo]()
$524
Last-minute flights from Philadelphia to IdahoDiscover last-minute flight deals from Philadelphia to Idaho. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho. Data last updated August 11, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 8/318:37 pm -
1 stop17h 52m
Tue 9/81:24 pm -
1 stop14h 15m
Deal found 8/7![Frontier logo]()
$213
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 stop7h 59m
Sat 9/195:59 pm -
1 stop9h 51m
Deal found 8/11![Delta logo]()
$259
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/85:49 pm -
1 stop9h 01m
Deal found 8/11![Delta logo]()
$283
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/47:05 am -
1 stop11h 14m
Tue 9/85:49 pm -
1 stop9h 01m
Deal found 8/11![Delta logo]()
$254
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/57:05 am -
1 stop11h 14m
Sat 9/126:45 am -
1 stop8h 14m
Deal found 8/11![Delta logo]()
$225
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/53:48 pm -
1 stop7h 58m
Fri 9/116:00 am -
1 stop11h 55m
Deal found 8/6![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:54 pm -
1 stop7h 15m
Sat 9/126:45 am -
1 stop8h 14m
Deal found 8/10![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:10 am -
1 stop6h 50m
Sat 9/128:00 am -
2 stops9h 50m
Deal found 8/10![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:16 am -
2 stops11h 50m
Sat 9/125:00 am -
2 stops11h 31m
Deal found 8/10![United Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:00 am -
1 stop9h 31m
Wed 9/161:52 pm -
1 stop7h 39m
Deal found 8/10![American Airlines logo]()
$207
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/103:12 pm -
1 stop9h 15m
Wed 9/161:52 pm -
1 stop7h 39m
Deal found 8/10![American Airlines logo]()
$288
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/184:05 pm -
2 stops9h 50m
Fri 9/252:55 pm -
1 stop6h 55m
Deal found 8/10![Southwest logo]()
$264
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 11, 2026.
Search for one-way flight options from Philadelphia to Idaho. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 8/10![Delta logo]()
$104
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/127:05 am -
1 stop11h 09m
Deal found 8/11![Delta logo]()
$113
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 -
2 stops9h 30m
Deal found 8/11![Southwest logo]()
$118
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 8/10![Delta logo]()
$142
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:10 am -
1 stop6h 50m
Deal found 8/10![Southwest logo]()
$145
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/66:16 am -
2 stops11h 50m
Deal found 8/10![United Airlines logo]()
$150
This Alaska Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/117:00 am -
1 stop10h 30m
Deal found 8/7![Alaska Airlines logo]()
$156
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 10/277:00 am -
1 stop10h 50m
Deal found 8/7![Delta logo]()
$163
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/266:30 am -
2 stops9h 30m
Deal found 8/6![Southwest logo]()
$168
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/169:27 am -
1 stop12h 24m
Deal found 8/8![United Airlines logo]()
$171
This Southwest deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/163:05 pm -
2 stops10h 55m
Deal found 8/8![Southwest logo]()
$176
This Booking.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:37 pm -
1 stop16h 52m
Deal found 8/9![Frontier logo]()
$182
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $207 (American Airlines) |
One-way from | $104 (Delta) |
Popular in | December |
Cheapest in | April |
Average price | $420 |
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 August 11, 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
Tue 10/27
5:45 am-12:35 pm
1 stop8h 50m
Boise Air Term. Gowen Fld
Tue 11/3
1:40 pm-11:49 pm
1 stop8h 09m
$207
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Thu 9/3
3:58 pm-9:30 pm
1 stop8h 32m
Spokane
Tue 9/8
5:49 pm-5:50 am
1 stop9h 01m
$283
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Mon 8/31
6:55 pm-11:59 pm
1 stop7h 04m
Boise Air Term. Gowen Fld
Sat 9/26
5:59 pm-5:50 am
1 stop9h 51m
$311
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 9/5
4:50 pm-9:00 pm
1 stop7h 10m
Spokane
Sat 9/12
11:05 am-10:55 pm
1 stop8h 50m
$315
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Tue 10/27
6:15 am-1:45 pm
2 stops9h 30m
Boise Air Term. Gowen Fld
Tue 11/3
12:37 pm-9:38 pm
1 stop7h 01m
$316
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 9/5
6:25 am-11:38 am
1 stop8h 13m
Spokane
Sat 9/12
5:00 am-5:54 pm
2 stops9h 54m
$320
Quickest round-trip
PhiladelphiaJackson
PHL Philadelphia - JAC Jackson Hole
PHLJAC
Philadelphia
Mon 1/25
6:10 am-1:57 pm
1 stop9h 47m
Jackson Hole
Wed 2/3
2:40 pm-10:46 pm
1 stop6h 06m
$321
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 9/12
12:55 pm-8:21 pm
1 stop10h 26m
Spokane
Tue 9/22
6:30 am-9:06 pm
1 stop11h 36m
$325
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Fri 9/4
2:31 pm-9:30 pm
1 stop9h 59m
Spokane
Tue 9/8
5:49 pm-5:50 am
1 stop9h 01m
$345
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Fri 9/11
4:05 pm-10:40 pm
1 stop8h 35m
Boise Air Term. Gowen Fld
Mon 9/14
7:30 am-9:10 pm
2 stops11h 40m
$350
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-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 below average for this route at the moment.
Philadelphia to Idaho flights typically cost between $300 and $556 in September.The cheapest round-trip price found within the last 5 days was $207 on American Airlines (Sep 9-Sep 16).
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 8 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 11, 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.
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Philadelphia 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 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 11, 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 2,558,603 searches. Data last updated August 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$200 | Average$519 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$532 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$300 | Average$593 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$371 | Average$556 | FlexibilityNo cancel fee | On-time63% |