$104+ Cheap flights from Philadelphia (PHL) to Idaho
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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Nov 4 — Nov 111
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Idaho with Cheapflights
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Cheapest flights from Philadelphia to IdahoExplore the most affordable flight options available from Philadelphia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 5, 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 October 5, 2026.
This Delta deal was found by Cheapflights users on 10/1. 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.
Thu 11/125:35 am -
1 stop8h 58m
Sat 11/215:59 pm -
1 stop9h 44m
Deal found 10/1![Delta logo]()
$311
This United Airlines deal was found by Cheapflights users on 10/3. 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 10/319:45 am -
2 stops10h 18m
Sat 11/72:51 pm -
1 stop6h 48m
Deal found 10/3![United Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 10/4. 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 11/105:00 am -
1 stop8h 00m
Wed 12/25:45 am -
2 stops13h 45m
Deal found 10/4![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 10/2. 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 11/17:00 am -
1 stop10h 20m
Thu 11/55:59 pm -
1 stop9h 45m
Deal found 10/2![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 10/2. 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 11/17:00 am -
1 stop10h 20m
Sun 11/87:13 pm -
1 stop8h 31m
Deal found 10/2![Delta logo]()
$369
This American Airlines deal was found by Cheapflights users on 10/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:25 am -
1 stop9h 08m
Sun 11/16:14 pm -
1 stop8h 56m
Deal found 10/4![American Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 10/4. 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.
Fri 10/305:10 pm -
2 stops9h 55m
Sun 11/13:55 pm -
1 stop6h 10m
Deal found 10/4![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 9/30. 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.
Fri 12/256:05 am -
1 stop8h 41m
Thu 12/311:51 pm -
1 stop7h 58m
Deal found 9/30![Delta logo]()
$401
This Southwest deal was found by Cheapflights users on 10/4. 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.
Mon 11/235:15 pm -
2 stops10h 15m
Tue 12/11:05 pm -
1 stop8h 25m
Deal found 10/4![Southwest logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Tue 11/107:02 am -
1 stop9h 25m
Wed 11/116:21 pm -
1 stop9h 11m
Deal found 10/4![Alaska Airlines logo]()
$406
This American Airlines deal was found by Cheapflights users on 10/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am -
1 stop10h 09m
Sat 10/241:50 pm -
1 stop7h 02m
Deal found 10/4![American Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/201:24 pm -
2 stops9h 30m
Sat 10/242:28 pm -
1 stop6h 52m
Deal found 10/4![United Airlines logo]()
$454
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 October 5, 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 October 5, 2026.
This Delta deal was found by Cheapflights users on 10/4. 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.
Tue 1/197:15 pm -
1 stop6h 40m
Mon 1/251:15 pm -
1 stop8h 26m
Deal found 10/4![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 10/3. 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 1/225:45 am -
2 stops12h 20m
Fri 1/298:15 am -
2 stops10h 40m
Deal found 10/3![Southwest logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Tue 11/107:02 am -
1 stop9h 25m
Wed 11/116:21 pm -
1 stop9h 11m
Deal found 10/4![Alaska Airlines logo]()
$406
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Tue 11/109:45 am -
2 stops13h 30m
Wed 11/1112:31 pm -
1 stop8h 40m
Deal found 10/3![United Airlines logo]()
$446
This American Airlines deal was found by Cheapflights users on 10/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am -
1 stop10h 09m
Sat 10/241:50 pm -
1 stop7h 02m
Deal found 10/4![American Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 10/3. 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 1/227:00 am -
1 stop7h 17m
Fri 1/291:43 pm -
1 stop7h 13m
Deal found 10/3![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 10/4. 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.
Mon 11/235:15 pm -
2 stops10h 15m
Tue 12/11:05 pm -
1 stop8h 25m
Deal found 10/4![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 10/3. 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 1/229:55 am -
2 stops13h 15m
Sun 1/242:30 pm -
1 stop7h 07m
Deal found 10/3![United Airlines logo]()
$464
This Southwest deal was found by Cheapflights users on 10/3. 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.
Sat 10/318:15 am -
2 stops12h 50m
Sat 11/711:30 am -
2 stops9h 25m
Deal found 10/3![Southwest logo]()
$431
This Southwest deal was found by Cheapflights users on 9/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:25 am -
2 stops10h 20m
Thu 10/223:50 pm -
1 stop7h 20m
Deal found 9/30![Southwest logo]()
$444
This Delta deal was found by Cheapflights users on 10/4. 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 1/287:00 am -
1 stop9h 54m
Sun 1/311:20 pm -
1 stop8h 21m
Deal found 10/4![Delta logo]()
$509
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/277:45 am -
1 stop7h 43m
Fri 10/302:35 pm -
1 stop7h 04m
Deal found 10/4![United Airlines logo]()
$515
This Alaska Airlines deal was found by Cheapflights users on 10/3. 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.
Tue 11/107:02 am -
1 stop29h 49m
Sat 11/1411:33 am -
1 stop27h 12m
Deal found 10/3![Alaska Airlines logo]()
$603
This Delta deal was found by Cheapflights users on 10/2. 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 1/247:00 am -
1 stop7h 45m
Sat 1/301:20 pm -
2 stops9h 31m
Deal found 10/2![Delta logo]()
$514
This Delta deal was found by Cheapflights users on 10/1. 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.
Tue 1/197:00 am -
1 stop7h 45m
Sat 1/231:20 pm -
2 stops9h 31m
Deal found 10/1![Delta logo]()
$514
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Thu 1/2811:20 am -
2 stops12h 16m
Sun 1/3112:49 pm -
1 stop6h 51m
Deal found 10/3![United Airlines logo]()
$630
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Thu 12/246:24 am -
1 stop7h 44m
Mon 12/2812:49 pm -
1 stop9h 45m
Deal found 10/3![United Airlines logo]()
$639
This Delta deal was found by Cheapflights users on 10/2. 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.
Sat 10/1712:32 pm -
2 stops13h 34m
Wed 10/219:15 am -
2 stops11h 35m
Deal found 10/2![Delta logo]()
$1,154
Last-minute flights from Philadelphia to IdahoDiscover last-minute flight deals from Philadelphia to Idaho. Data last updated October 5, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho. Data last updated October 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am -
1 stop10h 09m
Sat 10/241:50 pm -
1 stop7h 02m
Deal found 10/4![American Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/201:24 pm -
2 stops9h 30m
Sat 10/242:28 pm -
1 stop6h 52m
Deal found 10/4![United Airlines logo]()
$454
This American Airlines deal was found by Cheapflights users on 10/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:25 am -
1 stop9h 08m
Sun 11/16:14 pm -
1 stop8h 56m
Deal found 10/4![American Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 10/4. 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.
Fri 10/305:10 pm -
2 stops9h 55m
Sun 11/13:55 pm -
1 stop6h 10m
Deal found 10/4![Southwest logo]()
$398
This United Airlines deal was found by Cheapflights users on 10/3. 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 10/319:45 am -
2 stops10h 18m
Sat 11/72:51 pm -
1 stop6h 48m
Deal found 10/3![United Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 10/2. 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 11/17:00 am -
1 stop10h 20m
Thu 11/55:59 pm -
1 stop9h 45m
Deal found 10/2![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 10/2. 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 11/17:00 am -
1 stop10h 20m
Sun 11/87:13 pm -
1 stop8h 31m
Deal found 10/2![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Thu 11/57:45 am -
1 stop7h 43m
Sun 11/82:35 pm -
1 stop7h 04m
Deal found 10/3![United Airlines logo]()
$479
This Southwest deal was found by Cheapflights users on 10/4. 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 11/105:00 am -
1 stop8h 00m
Wed 12/25:45 am -
2 stops13h 45m
Deal found 10/4![Southwest logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Tue 11/107:02 am -
1 stop9h 25m
Wed 11/116:21 pm -
1 stop9h 11m
Deal found 10/4![Alaska Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 10/1. 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.
Thu 11/125:35 am -
1 stop8h 58m
Sat 11/215:59 pm -
1 stop9h 44m
Deal found 10/1![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 10/4. 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.
Mon 11/235:15 pm -
2 stops10h 15m
Tue 12/11:05 pm -
1 stop8h 25m
Deal found 10/4![Southwest logo]()
$404
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 October 5, 2026.
Search for one-way flight options from Philadelphia to Idaho. Find affordable one-way fares based on user searches. Data last updated October 5, 2026.
This Southwest deal was found by Cheapflights users on 10/4. 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.
Sat 10/315:00 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$104
This Southwest deal was found by Cheapflights users on 10/4. 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.
Thu 10/295:10 pm -
2 stops9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 9/30. 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.
Wed 10/2812:36 pm -
2 stops27h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$119
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/2710:00 am -
1 stop10h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![United Airlines logo]()
$156
This Delta deal was found by Cheapflights users on 10/1. 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 10/237:00 am -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Delta logo]()
$172
This Southwest deal was found by Cheapflights users on 10/1. 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 10/235:10 pm -
2 stops9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Southwest logo]()
$177
This American Airlines deal was found by Cheapflights users on 10/2. 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.
Sun 11/15:52 am -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![American Airlines logo]()
$185
This United Airlines deal was found by Cheapflights users on 10/1. 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 10/2410:40 am -
2 stops10h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![United Airlines logo]()
$190
This Delta deal was found by Cheapflights users on 10/1. 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.
Sun 10/257:20 am -
1 stop6h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Delta logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3112:36 pm -
3 stops51h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Multiple Airlines logo]()
$200
This Southwest deal was found by Cheapflights users on 10/4. 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.
Fri 10/305:10 pm -
2 stops10h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$203
This American Airlines deal was found by Cheapflights users on 10/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/285:55 am -
1 stop9h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![American Airlines logo]()
$255
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 October 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Delta) |
One-way from | $104 (Southwest) |
Popular in | June |
Cheapest in | April |
Average price | $432 |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 5, 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
Quickest round-trip
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Sat 10/31
5:00 am-10:05 am
1 stop7h 05m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$104
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Wed 10/28
12:36 pm-1:54 pm
2 stops27h 18m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$119
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Thu 10/22
3:46 pm-9:57 pm
1 stop8h 11m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$156
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Thu 10/29
9:10 am-4:42 pm
1 stop9h 32m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$156
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Tue 11/3
6:15 am-11:31 am
1 stop7h 16m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$156
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Sat 10/31
10:00 am-6:03 pm
1 stop10h 03m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$156
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Thu 10/29
5:10 pm-1:05 am
2 stops9h 55m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Mon 11/2
1:16 pm-10:59 pm
2 stops11h 43m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaBoise
PHL Philadelphia - BOI Boise Air Term. Gowen Fld
PHLBOI
Philadelphia
Tue 10/27
9:45 am-9:15 pm
2 stops13h 30m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaHailey
PHL Philadelphia - SUN Hailey Sun Valley-Friedman
PHLSUN
Philadelphia
Thu 1/28
5:55 am-1:05 pm
1 stop9h 10m
Hailey Sun Valley-Friedman
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$255
Showing 1-10 of 34 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-IDA
PHL-SUN
PHL-LWS
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-IDA
PHL-SUN
PHL-LWS
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 $440). 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 $318 and $746 in January.The cheapest round-trip price found within the last 5 days was $311 on Delta (Jan 19-Jan 25).
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 82 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 October 5, 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.
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Philadelphia to Idaho
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 October 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Idaho flights
Consider these flights traveling from Philadelphia to Idaho.
Top 4 airlines flying from Philadelphia to Idaho
Discover the top 4 airlines that operate flights from Philadelphia to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$229 | Average$529 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$297 | Average$531 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$318 | Average$612 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$328 | Average$556 | FlexibilityNo cancel fee | On-time63% |