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Delaware

$98+ Cheap flights from Idaho to Delaware

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ILG
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Idaho to Delaware

Cheapest flights from Idaho to Delaware
Explore the most affordable flight options available from Idaho to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Booking.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” 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.
Sun 12/2112:38 pmBOI - PHL
1 stop14h 53mFrontier
Sat 1/38:36 pmPHL - BOI
1 stop17h 07mFrontier
Deal found 12/16$326
This American Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” 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.
Mon 12/226:30 amGEG - PHL
1 stop10h 21mAmerican Airlines
Mon 1/51:54 pmPHL - GEG
1 stop10h 34mAmerican Airlines
Deal found 12/15$488
This Southwest deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” 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 12/229:50 amGEG - PHL
2 stops11h 30mSouthwest
Mon 1/56:35 pmPHL - GEG
1 stop8h 20mSouthwest
Deal found 12/15$501
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” 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 12/251:00 pmBOI - PHL
1 stop8h 18mDelta
Mon 12/296:54 pmPHL - BOI
1 stop6h 59mDelta
Deal found 12/17$550
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” 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 12/255:00 amBOI - PHL
2 stops10h 28mUnited Airlines
Mon 12/298:27 amPHL - BOI
2 stops15h 04mUnited Airlines
Deal found 12/17$599
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” 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 12/276:19 pmBOI - PHL
1 stop9h 31mDelta
Fri 1/26:54 pmPHL - BOI
1 stop6h 59mDelta
Deal found 12/17$617
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” 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 12/186:00 amGEG - PHL
1 stop8h 29mDelta
Sun 12/215:30 amPHL - GEG
1 stop8h 22mDelta
Deal found 12/16$655
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” 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 12/169:50 amGEG - PHL
2 stops11h 07mDelta
Fri 12/1912:22 pmPHL - GEG
2 stops13h 03mDelta
Deal found 12/16$665
This Southwest deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/211:10 pmBOI - PHL
2 stops9h 20mSouthwest
Sat 1/36:20 amPHL - BOI
1 stop13h 50mSouthwest
Deal found 12/16$707
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amGEG - PHL
1 stop9h 29mAmerican Airlines
Sat 12/273:55 pmPHL - GEG
1 stop8h 33mAmerican Airlines
Deal found 12/17$707
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” 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 12/3112:50 pmPIH - PHL
1 stop8h 28mDelta
Sun 1/47:05 amPHL - PIH
1 stop7h 04mDelta
Deal found 12/16$724
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” 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 12/315:00 amIDA - PHL
1 stop16h 12mUnited Airlines
Sun 1/46:00 amPHL - IDA
2 stops18h 59mUnited Airlines
Deal found 12/16$751

Find flight deals from Idaho to Delaware

Keep the following information in mind while searching for Idaho to Delaware flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$264
(Kiwi.com)

One-way from

$98
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$631
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Philadelphia flights.
Search Deals
From Idaho to Delaware
Search Deals
One-way flight from Idaho to Delaware
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Delaware that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Idaho to Delaware that are best for you.

Fly from

Idaho

Fly to

Delaware

Route

Depart

Return

Price

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 2/25

5:40 am-5:20 pm

1 stop8h 40m

Philadelphia

Wed 3/4

6:20 pm-9:37 pm

1 stop30h 17m

$325

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 2/25

8:29 pm-5:20 pm

1 stop17h 51m

Philadelphia

Tue 3/3

6:20 pm-12:29 pm

1 stop21h 09m

$325

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 2/27

8:29 pm-5:20 pm

1 stop17h 51m

Philadelphia

Wed 3/4

6:20 pm-6:12 pm

1 stop26h 52m

$325

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 1/30

6:00 pm-6:03 pm

1 stop21h 03m

Philadelphia

Fri 2/6

7:06 pm-5:49 pm

1 stop25h 43m

$326

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 1/15

8:15 am-5:34 pm

1 stop7h 19m

Philadelphia

Sun 1/18

8:35 am-4:10 pm

1 stop9h 35m

$330

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 2/27

6:05 am-7:25 pm

2 stops10h 20m

Philadelphia

Wed 3/4

12:29 pm-12:04 am

2 stops14h 35m

$336

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 2/25

6:15 am-7:25 pm

1 stop10h 10m

Philadelphia

Wed 3/4

3:05 pm-11:30 pm

2 stops11h 25m

$336

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 2/25

11:20 am-11:13 pm

2 stops8h 53m

Philadelphia

Tue 3/3

7:00 am-6:40 pm

2 stops14h 40m

$336

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 2/25

7:10 am-11:44 pm

2 stops13h 34m

Philadelphia

Wed 3/4

12:29 pm-12:04 am

2 stops14h 35m

$336

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 1/30

9:20 am-11:56 pm

2 stops11h 36m

Philadelphia

Fri 2/6

5:17 pm-11:59 pm

2 stops9h 42m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 52 results
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Best time to book a flight from Idaho to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Idaho with our price prediction graph.
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 Delaware
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Idaho to Delaware?

    Departing from Idaho to Delaware will take you 7h 19m. Airlines will cover a distance of 2106 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Idaho to Delaware that include hotel bookings?

    Yes. In addition to deals on Idaho to Delaware flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Delaware?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Delaware.

  • Can I find deals for business class flights from Idaho to Delaware?

    Yes. Cheapflights offers flight deals from Idaho to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Idaho to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
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