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Delaware

$129+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ILG
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Delta deal was found by Cheapflights users on 1/28. 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.
Tue 6/211:30 pm
BOI
-
PHL
1 stop8h 07m
Delta
Sat 6/136:15 am
PHL
-
BOI
1 stop9h 48m
Delta
Deal found 1/28$257
This Delta deal was found by Cheapflights users on 1/29. 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.
Sat 2/285:45 am
GEG
-
PHL
1 stop8h 44m
Delta
Sat 3/75:31 am
PHL
-
GEG
1 stop9h 04m
Delta
Deal found 1/29$257
This Delta deal was found by Cheapflights users on 1/28. 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.
Wed 6/37:30 pm
BOI
-
PHL
1 stop8h 35m
Delta
Tue 6/93:10 pm
PHL
-
BOI
2 stops10h 46m
Delta
Deal found 1/28$262
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/241:44 pm
GEG
-
PHL
1 stop6h 48m
United Airlines
Tue 3/310:06 am
PHL
-
GEG
2 stops14h 11m
United Airlines
Deal found 1/27$262
This Delta deal was found by Cheapflights users on 1/28. 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.
Fri 3/272:41 pm
JAC
-
PHL
1 stop8h 16m
Delta
Mon 3/307:00 am
PHL
-
JAC
1 stop7h 10m
Delta
Deal found 1/28$289
This United Airlines deal was found by Cheapflights users on 1/29. 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 2/287:00 am
GEG
-
PHL
1 stop7h 14m
United Airlines
Sat 3/79:55 am
PHL
-
GEG
2 stops14h 23m
United Airlines
Deal found 1/29$293
This American Airlines deal was found by Cheapflights users on 1/27. 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 3/512:25 pm
GEG
-
PHL
1 stop8h 28m
American Airlines
Tue 3/175:15 pm
PHL
-
GEG
1 stop8h 59m
American Airlines
Deal found 1/27$297
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/56:37 pm
GEG
-
PHL
2 stops12h 10m
United Airlines
Tue 3/173:30 pm
PHL
-
GEG
1 stop8h 48m
United Airlines
Deal found 1/27$302
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:43 pm
GEG
-
PHL
1 stop7h 00m
United Airlines
Wed 4/1511:36 am
PHL
-
GEG
2 stops12h 35m
United Airlines
Deal found 1/28$306
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1212:36 pm
BOI
-
PHL
1 stop27h 19m
Frontier
Thu 2/195:42 pm
PHL
-
BOI
1 stop19h 29m
Frontier
Deal found 1/28$308
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:35 pm
IDA
-
PHL
1 stop6h 11m
United Airlines
Sat 10/318:00 am
PHL
-
IDA
1 stop7h 35m
United Airlines
Deal found 1/28$309
This Delta deal was found by Cheapflights users on 1/26. 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 4/75:00 pm
GEG
-
PHL
1 stop9h 41m
Delta
Mon 4/132:59 pm
PHL
-
GEG
1 stop9h 06m
Delta
Deal found 1/26$321

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$257
(Delta)

One-way from

$129
(Delta)

Popular in

December

Cheapest in

January

Average price

$346
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 ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 6/3

7:30 pm-6:05 am

1 stop8h 35m

Philadelphia

Tue 6/9

6:40 pm-11:56 pm

1 stop7h 16m

$257

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Sat 2/28

5:45 am-5:29 pm

1 stop8h 44m

Philadelphia

Sat 3/7

5:31 am-11:35 am

1 stop9h 04m

$257

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

Fri 3/27

2:41 pm-12:57 am

1 stop8h 16m

Philadelphia

Mon 3/30

7:00 am-12:10 pm

1 stop7h 10m

$289

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 3/5

12:25 pm-11:53 pm

1 stop8h 28m

Philadelphia

Tue 3/17

5:15 pm-11:14 pm

1 stop8h 59m

$297

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 3/5

6:37 pm-9:47 am

2 stops12h 10m

Philadelphia

Tue 3/17

3:30 pm-9:18 pm

1 stop8h 48m

$302

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 4/8

3:25 pm-5:41 am

2 stops11h 16m

Philadelphia

Mon 4/13

6:00 am-1:03 pm

2 stops10h 03m

$332

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sat 2/21

1:43 pm-12:24 am

1 stop8h 41m

Philadelphia

Tue 2/24

6:10 am-1:58 pm

1 stop9h 48m

$337

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

Fri 3/20

12:28 pm-11:20 pm

1 stop8h 52m

Philadelphia

Mon 3/23

7:14 am-12:18 pm

1 stop7h 04m

$339

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

Tue 3/31

1:44 pm-7:21 am

2 stops15h 37m

Philadelphia

Tue 4/7

5:00 am-12:38 pm

1 stop9h 38m

$341

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Mon 6/1

7:30 pm-6:05 am

1 stop8h 35m

Philadelphia

Wed 6/10

7:05 am-2:22 pm

1 stop9h 17m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 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 8h 28m. Airlines will cover a distance of 2147 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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