$156+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHL
Dec 2 — Dec 91
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Philadelphia 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
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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 Idaho to Philadelphia
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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 November 2, 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 November 2, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:33 pm -
1 stop9h 38m
Tue 12/297:52 pm -
1 stop22h 56m
Deal found 11/1![Frontier logo]()
$310
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:47 pm -
1 stop9h 10m
Mon 12/145:15 am -
1 stop10h 29m
Deal found 11/1![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/103:00 pm -
1 stop6h 54m
Thu 12/179:43 am -
2 stops10h 55m
Deal found 10/28![Delta logo]()
$326
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:10 pm -
2 stops10h 50m
Mon 1/46:00 am -
1 stop10h 10m
Deal found 10/29![Delta logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:37 am -
1 stop8h 31m
Tue 12/157:00 am -
1 stop10h 26m
Deal found 11/1![Alaska Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:00 am -
1 stop7h 55m
Wed 11/183:14 pm -
1 stop8h 29m
Deal found 10/30![American Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:35 am -
2 stops10h 50m
Wed 11/1810:00 am -
1 stop7h 38m
Deal found 10/30![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:40 pm -
1 stop7h 01m
Wed 12/97:41 am -
1 stop7h 56m
Deal found 10/29![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/1810:35 am -
2 stops10h 37m
Tue 11/247:45 am -
1 stop7h 43m
Deal found 10/31![United Airlines logo]()
$548
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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 11/41:53 pm -
1 stop13h 39m
Sat 11/77:02 am -
1 stop10h 16m
Deal found 11/2![Alaska Airlines logo]()
$578
This American Airlines deal was found by Cheapflights users on 11/2. 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 11/46:36 am -
2 stops11h 20m
Sat 11/73:14 pm -
1 stop8h 29m
Deal found 11/2![American Airlines logo]()
$587
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:20 am -
1 stop8h 18m
Thu 11/197:15 am -
1 stop9h 33m
Deal found 10/30![Delta logo]()
$599
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 November 2, 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 November 2, 2026.
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:10 pm -
1 stop9h 05m
Mon 1/46:00 am -
1 stop10h 10m
Deal found 11/1![Delta logo]()
$311
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/302:30 pm -
1 stop7h 07m
Sat 2/69:55 am -
2 stops13h 15m
Deal found 11/1![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/198:50 pm -
2 stops11h 35m
Sun 12/204:50 pm -
1 stop8h 15m
Deal found 10/28![Southwest logo]()
$441
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/113:00 pm -
1 stop6h 54m
Mon 12/146:20 am -
2 stops13h 33m
Deal found 11/1![Delta logo]()
$316
This Alaska Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/211:23 am -
1 stop27h 48m
Sat 2/66:14 pm -
1 stop26h 41m
Deal found 10/30![Alaska Airlines logo]()
$633
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/147:00 am -
2 stops8h 44m
Sun 1/1711:39 am -
2 stops11h 31m
Deal found 10/30![United Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 1/262:35 pm -
1 stop7h 02m
Wed 1/277:46 am -
1 stop7h 43m
Deal found 10/31![United Airlines logo]()
$441
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/193:21 pm -
1 stop6h 33m
Sun 12/205:15 am -
1 stop10h 56m
Deal found 10/28![Delta logo]()
$445
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:35 am -
2 stops10h 50m
Wed 11/1810:00 am -
1 stop7h 38m
Deal found 10/30![United Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/176:45 pm -
1 stop8h 56m
Wed 3/248:25 am -
2 stops11h 49m
Deal found 11/1![Delta logo]()
$469
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 2/276:48 pm -
1 stop20h 08m
Wed 3/35:56 pm -
1 stop17h 42m
Deal found 10/28![Alaska Airlines logo]()
$634
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:40 pm -
1 stop7h 01m
Wed 12/97:41 am -
1 stop9h 48m
Deal found 10/30![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/272:45 pm -
1 stop6h 58m
Wed 3/36:05 am -
1 stop7h 49m
Deal found 10/29![United Airlines logo]()
$621
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/23:55 pm -
2 stops15h 54m
Sat 2/66:17 am -
1 stop7h 51m
Deal found 11/1![United Airlines logo]()
$641
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:20 am -
2 stops8h 59m
Thu 11/195:15 am -
2 stops11h 33m
Deal found 10/30![Delta logo]()
$920
Last-minute flights from Idaho to PhiladelphiaDiscover last-minute flight deals from Idaho to Philadelphia. Data last updated November 2, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Philadelphia. Data last updated November 2, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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 11/41:53 pm -
1 stop13h 39m
Sat 11/77:02 am -
1 stop10h 16m
Deal found 11/2![Alaska Airlines logo]()
$578
This American Airlines deal was found by Cheapflights users on 11/2. 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 11/46:36 am -
2 stops11h 20m
Sat 11/73:14 pm -
1 stop8h 29m
Deal found 11/2![American Airlines logo]()
$587
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:35 pm -
1 stop8h 42m
Sun 11/155:00 am -
1 stop10h 05m
Deal found 10/30![American Airlines logo]()
$628
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:00 am -
1 stop7h 55m
Wed 11/183:14 pm -
1 stop8h 29m
Deal found 10/30![American Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:35 am -
2 stops10h 50m
Wed 11/1810:00 am -
1 stop7h 38m
Deal found 10/30![United Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:20 am -
1 stop8h 18m
Thu 11/197:15 am -
1 stop9h 33m
Deal found 10/30![Delta logo]()
$599
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/1810:35 am -
2 stops10h 37m
Tue 11/247:45 am -
1 stop7h 43m
Deal found 10/31![United Airlines logo]()
$548
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/103:00 pm -
1 stop6h 54m
Thu 12/179:43 am -
2 stops10h 55m
Deal found 10/28![Delta logo]()
$326
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:47 pm -
1 stop9h 10m
Mon 12/145:15 am -
1 stop10h 29m
Deal found 11/1![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:37 am -
1 stop8h 31m
Tue 12/157:00 am -
1 stop10h 26m
Deal found 11/1![Alaska Airlines logo]()
$355
This Cheapflightsfares deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:33 pm -
1 stop9h 38m
Tue 12/297:52 pm -
1 stop22h 56m
Deal found 11/1![Frontier logo]()
$310
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:10 pm -
2 stops10h 50m
Mon 1/46:00 am -
1 stop10h 10m
Deal found 10/29![Delta logo]()
$330
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 November 2, 2026.
Search for one-way flight options from Idaho to Philadelphia. Find affordable one-way fares based on user searches. Data last updated November 2, 2026.
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:20 am -
1 stop8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![United Airlines logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:55 pm -
1 stop8h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$158
This Priceline deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/315:00 pm -
1 stop10h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Alaska Airlines logo]()
$166
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3110:40 am -
2 stops11h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![United Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/3112:31 pm -
1 stop8h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![American Airlines logo]()
$246
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/272:35 pm -
1 stop7h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![United Airlines logo]()
$249
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 1/307:00 am -
2 stops12h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$251
This Southwest deal was found by Cheapflights users on 11/2. 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.
Wed 11/2512:45 pm -
2 stops9h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Southwest logo]()
$263
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
2 stops9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Southwest logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:06 pm -
1 stop8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Multiple Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/274:00 pm -
3 stops18h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![United Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:55 pm -
3 stops26h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Multiple Airlines logo]()
$321
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 November 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $310 (Cheapflightsfares) |
One-way from | $156 (United Airlines) |
Popular in | December |
Cheapest in | August |
Average price | $596 |
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 November 2, 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
Fri 11/27
6:20 am-5:15 pm
1 stop8h 55m
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
Tue 11/24
7:55 pm-6:01 am
1 stop8h 06m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$158
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Thu 12/31
5:00 pm-5:42 am
1 stop10h 42m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$166
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Thu 12/31
10:40 am-12:34 am
2 stops11h 54m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
HaileyPhiladelphia
SUN Hailey Sun Valley-Friedman - PHL Philadelphia
SUNPHL
Hailey Sun Valley-Friedman
Sun 1/31
12:36 pm-9:34 pm
1 stop6h 58m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$246
HaileyPhiladelphia
SUN Hailey Sun Valley-Friedman - PHL Philadelphia
SUNPHL
Hailey Sun Valley-Friedman
Sat 1/30
12:49 pm-9:40 pm
1 stop6h 51m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$246
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Wed 11/25
12:45 pm-11:50 pm
2 stops9h 05m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$263
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Fri 11/27
5:00 am-4:35 pm
2 stops9h 35m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$268
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Wed 12/30
11:10 pm-10:15 am
1 stop9h 05m
Philadelphia
Mon 1/4
6:00 am-2:10 pm
1 stop10h 10m
$311
BoisePhiladelphia
BOI Boise Air Term. Gowen Fld - PHL Philadelphia
BOIPHL
Boise Air Term. Gowen Fld
Fri 12/11
3:00 pm-11:54 pm
1 stop6h 54m
Philadelphia
Mon 12/14
6:20 am-5:53 pm
2 stops13h 33m
$316
Showing 1-10 of 33 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
IDA-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
IDA-PHL
SUN-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 $698). 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 $362 and $755 in December.The cheapest round-trip price found within the last 5 days was $310 on Frontier (Dec 23-Dec 29).
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 32 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
King of Prussia
Reading
Camden
Dover
Ocean City
Wildwood Crest
Cherry Hill
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Milford
Ephrata
Elkton
Essington
New Castle
Willow Grove
Glen Mills
Vineland
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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 November 2, 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 November 2, 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 November 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$257 | Average$414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$257 | Average$831 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$278 | Average$542 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$310 | Average$398 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$348 | Average$553 | FlexibilityNo cancel fee | On-time63% |