$122+ Cheap flights from Idaho to Philadelphia (PHL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHL
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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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
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Cheapest flights from Idaho to PhiladelphiaExplore the most affordable flight options available from Idaho to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
Explore the most affordable flight options available from Idaho to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
This Expedia deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:50 pm -
1 stop14h 28m
Wed 10/286:41 pm -
1 stop17h 15m
Deal found 9/3![Multiple Airlines logo]()
$291
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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.
Wed 10/146:04 pm -
1 stop9h 37m
Sat 10/317:02 am -
1 stop10h 21m
Deal found 9/6![Alaska Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:55 am -
2 stops9h 40m
Sat 10/245:25 am -
1 stop12h 50m
Deal found 9/4![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:13 pm -
1 stop8h 31m
Tue 10/277:00 am -
1 stop10h 20m
Deal found 9/3![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/511:10 pm -
1 stop8h 19m
Thu 10/87:00 am -
1 stop10h 20m
Deal found 9/5![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:31 pm -
1 stop7h 09m
Wed 10/286:15 am -
2 stops9h 30m
Deal found 9/3![United Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:43 pm -
1 stop8h 29m
Mon 10/265:43 am -
1 stop8h 36m
Deal found 9/2![American Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:49 pm -
1 stop6h 50m
Mon 11/236:15 am -
1 stop7h 54m
Deal found 9/4![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:49 pm -
1 stop6h 50m
Sat 11/219:45 am -
2 stops14h 26m
Deal found 9/2![United Airlines logo]()
$346
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:14 pm -
1 stop10h 11m
Fri 10/165:00 am -
1 stop8h 24m
Deal found 9/2![American Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:50 pm -
1 stop7h 20m
Mon 10/265:10 pm -
2 stops9h 55m
Deal found 9/3![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:30 pm -
1 stop7h 20m
Tue 10/67:00 am -
1 stop8h 18m
Deal found 9/3![Delta logo]()
$353
Best flights from Idaho to PhiladelphiaDiscover carefully curated flight deals from Idaho to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from Idaho to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:49 pm -
1 stop9h 16m
Sat 10/245:45 am -
1 stop8h 50m
Deal found 9/2![Delta logo]()
$311
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Thu 11/192:15 pm -
1 stop6h 44m
Mon 11/235:49 am -
1 stop10h 36m
Deal found 9/6![American Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Wed 11/181:49 pm -
1 stop6h 50m
Mon 11/2310:54 am -
2 stops13h 17m
Deal found 9/6![United Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:37 pm -
1 stop20h 37m
Mon 10/197:02 am -
1 stop10h 38m
Deal found 9/3![Alaska Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:50 pm -
1 stop7h 20m
Fri 10/165:10 pm -
2 stops9h 55m
Deal found 9/2![Southwest logo]()
$402
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:13 pm -
1 stop8h 31m
Tue 10/277:00 am -
1 stop10h 20m
Deal found 9/3![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:59 pm -
1 stop9h 45m
Mon 11/95:35 am -
1 stop8h 58m
Deal found 9/4![Delta logo]()
$331
This Alaska Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:58 pm -
1 stop13h 43m
Fri 10/166:41 pm -
1 stop22h 39m
Deal found 9/2![Alaska Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/35:00 am -
2 stops11h 14m
Sat 10/106:10 am -
1 stop7h 18m
Deal found 9/5![United Airlines logo]()
$396
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/711:20 am -
2 stops10h 15m
Sat 10/175:25 am -
1 stop7h 20m
Deal found 9/5![Southwest logo]()
$414
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:21 pm -
1 stop8h 56m
Wed 11/187:00 am -
1 stop7h 39m
Deal found 9/2![American Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:30 pm -
1 stop7h 20m
Tue 10/67:00 am -
1 stop8h 18m
Deal found 9/3![Delta logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 11/76:21 pm -
1 stop9h 11m
Tue 11/105:49 pm -
1 stop28h 13m
Deal found 9/5![Alaska Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:28 pm -
1 stop7h 01m
Fri 10/306:15 am -
2 stops11h 23m
Deal found 9/4![United Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:55 am -
2 stops9h 40m
Sun 10/255:20 am -
1 stop7h 20m
Deal found 9/2![Southwest logo]()
$418
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:49 pm -
1 stop9h 16m
Sun 10/257:00 am -
1 stop10h 20m
Deal found 9/3![Delta logo]()
$358
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:07 pm -
2 stops13h 33m
Tue 10/205:43 am -
1 stop8h 36m
Deal found 9/7![American Airlines logo]()
$443
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 9/153:05 pm -
1 stop21h 40m
Tue 9/224:48 pm -
1 stop9h 23m
Deal found 9/5![Alaska Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:00 am -
1 stop7h 53m
Sat 9/198:30 am -
2 stops9h 36m
Deal found 9/2![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:15 am -
2 stops11h 25m
Sat 9/196:30 am -
2 stops9h 30m
Deal found 9/2![Southwest logo]()
$419
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:59 pm -
1 stop9h 45m
Mon 11/97:11 pm -
1 stop6h 45m
Deal found 9/4![Delta logo]()
$360
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:31 pm -
1 stop8h 26m
Tue 11/106:15 am -
1 stop7h 16m
Deal found 9/2![United Airlines logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:09 am -
1 stop9h 29m
Mon 10/267:02 am -
1 stop10h 18m
Deal found 9/4![Alaska Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:00 am -
1 stop11h 55m
Sat 9/198:30 am -
2 stops9h 36m
Deal found 9/2![United Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:06 pm -
1 stop7h 59m
Sat 9/197:05 am -
1 stop11h 09m
Deal found 9/2![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:35 pm -
1 stop7h 04m
Wed 11/117:45 am -
1 stop7h 43m
Deal found 9/3![United Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:12 pm -
2 stops9h 43m
Wed 11/187:15 am -
1 stop6h 50m
Deal found 9/2![Delta logo]()
$428
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/2411:48 am -
1 stop27h 50m
Tue 10/277:02 am -
1 stop30h 04m
Deal found 9/6![Alaska Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:34 pm -
1 stop7h 05m
Mon 11/96:15 am -
2 stops9h 38m
Deal found 9/4![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:34 pm -
1 stop7h 05m
Mon 11/96:15 am -
2 stops9h 38m
Deal found 9/4![United Airlines logo]()
$494
Last-minute flights from Idaho to PhiladelphiaDiscover last-minute flight deals from Idaho to Philadelphia. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Philadelphia. Data last updated September 7, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:30 pm -
1 stop7h 20m
Tue 10/67:00 am -
1 stop8h 18m
Deal found 9/3![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/511:10 pm -
1 stop8h 19m
Thu 10/87:00 am -
1 stop10h 20m
Deal found 9/5![Delta logo]()
$331
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/72:08 pm -
1 stop7h 04m
Wed 10/145:00 am -
1 stop9h 59m
Deal found 9/2![American Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:14 pm -
1 stop10h 11m
Fri 10/165:00 am -
1 stop8h 24m
Deal found 9/2![American Airlines logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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.
Wed 10/146:04 pm -
1 stop9h 37m
Sat 10/317:02 am -
1 stop10h 21m
Deal found 9/6![Alaska Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:55 am -
2 stops9h 40m
Sat 10/245:25 am -
1 stop12h 50m
Deal found 9/4![Southwest logo]()
$322
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:43 pm -
1 stop8h 29m
Mon 10/265:43 am -
1 stop8h 36m
Deal found 9/2![American Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:13 pm -
1 stop8h 31m
Tue 10/277:00 am -
1 stop10h 20m
Deal found 9/3![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:50 pm -
1 stop7h 20m
Mon 10/265:10 pm -
2 stops9h 55m
Deal found 9/3![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:49 pm -
1 stop9h 16m
Sun 10/257:00 am -
1 stop10h 20m
Deal found 9/3![Delta logo]()
$358
This Expedia deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:50 pm -
1 stop14h 28m
Wed 10/286:41 pm -
1 stop17h 15m
Deal found 9/3![Multiple Airlines logo]()
$291
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:31 pm -
1 stop7h 09m
Wed 10/286:15 am -
2 stops9h 30m
Deal found 9/3![United Airlines logo]()
$334
One-way flights from Idaho to PhiladelphiaSearch for one-way flight options from Idaho to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from Idaho to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This Booking.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:50 pm -
1 stop14h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:50 pm -
2 stops25h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$146
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 10/175:59 am -
1 stop7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Alaska Airlines logo]()
$156
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 2/106:25 am -
2 stops13h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$171
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:48 pm -
1 stop6h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$171
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:13 pm -
1 stop7h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![American Airlines logo]()
$171
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:40 pm -
1 stop9h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/129:33 pm -
2 stops42h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:00 am -
2 stops9h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/271:05 pm -
2 stops9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Delta logo]()
$186
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:00 am -
2 stops12h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$186
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1912:30 pm -
1 stop8h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$200
Find flight deals from Idaho to Philadelphia
Keep the following information in mind while searching for Idaho to Philadelphia flight deals. Data was last updated September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $291 (Expedia) |
One-way from | $122 (Booking.com) |
Popular in | February |
Cheapest in | August |
Average price | $378 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Philadelphia 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 September 7, 2026.
Use the filters below to find and compare flights from Idaho to Philadelphia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Sat 10/17
12:14 pm-12:25 am
1 stop10h 11m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$156
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Sat 10/17
5:59 am-3:14 pm
1 stop7h 15m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$156
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Wed 10/14
2:41 pm-12:25 am
1 stop7h 44m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$156
Quickest round-trip
JacksonPhiladelphia
JAC Jackson Hole - PHL Philadelphia
JACPHL
Jackson Hole
Wed 10/21
2:48 pm-11:20 pm
1 stop6h 32m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$171
JacksonPhiladelphia
JAC Jackson Hole - PHL Philadelphia
JACPHL
Jackson Hole
Tue 10/27
1:43 pm-12:12 am
1 stop8h 29m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$171
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Wed 11/18
2:13 pm-12:19 am
1 stop7h 06m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$171
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Fri 10/23
1:40 pm-12:56 am
1 stop9h 16m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$174
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Mon 10/12
9:33 pm-6:15 pm
2 stops42h 42m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$174
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Wed 11/18
6:40 am-9:20 pm
2 stops11h 40m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$176
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Wed 11/18
5:00 am-5:47 pm
2 stops9h 47m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$176
Showing 1-10 of 58 resultsSorted by cheapest first
Best time to book a flight from Idaho to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Idaho with our price prediction graph.
BOI-PHL
GEG-PHL
IDA-PHL
JAC-PHL
SUN-PHL
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 Idaho to Philadelphia
USID-PHL
BOI-PHL
GEG-PHL
IDA-PHL
JAC-PHL
What is the cheapest month to book a flight from Idaho to Philadelphia?
Currently, August is the cheapest month in which you can book a flight from Idaho to Philadelphia (average of $397). Flying from Idaho to Philadelphia in December is currently the most expensive (average of $650). 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 Idaho to Philadelphia?
Airfare is below average for this route at the moment.
Idaho to Philadelphia flights typically cost between $318 and $678 in October.The cheapest round-trip price found within the last 5 days was $291 on Multiple Airlines (Oct 26-Oct 28).
How far ahead should I book a flight from Idaho to Philadelphia?
To ensure you get the cheapest price possible for a flight from Idaho to Philadelphia, you should look to book at least 36 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Related info for your journey
Find useful and relevant information for your journey from Idaho to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Wildwood Crest
Cherry Hill
Ocean City
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Vineland
Millville
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Idaho to Philadelphia
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Complete your trip
Complete your trip to Philadelphia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Philadelphia by cabin class
Find flights from Idaho to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Philadelphia flights
Browse other Idaho and Philadelphia flight options. Last updated on September 7, 2026.
Other flights to Philadelphia
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Philadelphia flights
Consider these flights traveling from Idaho to Philadelphia.
Top 5 airlines flying from Idaho to Philadelphia
Discover the top 5 airlines that operate flights from Idaho to Philadelphia. 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 September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$257 | Average$755 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$434 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$309 | Average$517 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$310 | Average$398 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$348 | Average$553 | FlexibilityNo cancel fee | On-time63% |