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Delaware

$97+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ILG
Jul 19 — Jul 261
Sat 7/19
Sat 7/26
1 adult, Economy
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Cheap flight deals from Idaho to Delaware

Keep the following information in mind while searching for Idaho to Delaware flight deals. Data was last updated July 14, 2025.

Round-trip from

$209
(FlightHub)

One-way from

$97
(Priceline)

Popular in

October

Cheapest in

January

Average price

$525
From Idaho to Delaware
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One-way flight from Idaho to Delaware
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Highest demand for flights based on searches. 7% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 14, 2025.

This FlightHub deal was found by Cheapflights users on 7/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/59:16 pmBOI - PHL
1 stop21h 35mSpirit Airlines
Sun 9/75:21 pmPHL - BOI
1 stop29h 00mSpirit Airlines
Deal found 7/12$209
This Priceline deal was found by Cheapflights users on 7/12. 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.
Sun 7/2011:58 amGEG - PHL
1 stop7h 11mFrontier
Sun 7/276:15 amPHL - GEG
1 stop7h 48mFrontier
Deal found 7/12$293
This American Airlines deal was found by Cheapflights users on 7/13. 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 11/121:40 pmGEG - PHL
1 stop16h 38mAmerican Airlines
Sat 11/157:06 amPHL - GEG
1 stop8h 47mAmerican Airlines
Deal found 7/13$315
This Mytrip deal was found by Cheapflights users on 7/12. 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 9/182:16 pmBOI - PHL
1 stop13h 54mMultiple Airlines
Sun 9/216:35 amPHL - BOI
2 stops11h 10mMultiple Airlines
Deal found 7/12$318
This American Airlines deal was found by Cheapflights users on 7/14. 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 8/281:10 pmBOI - PHL
1 stop9h 14mAmerican Airlines
Thu 9/45:00 amPHL - BOI
1 stop9h 48mAmerican Airlines
Deal found 7/14$323
This Delta deal was found by Cheapflights users on 7/14. 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 8/117:05 pmGEG - PHL
1 stop7h 40mDelta
Sat 8/235:00 pmPHL - GEG
1 stop8h 30mDelta
Deal found 7/14$323
This American Airlines deal was found by Cheapflights users on 7/13. 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 8/712:55 pmJAC - PHL
1 stop9h 50mAmerican Airlines
Mon 8/116:38 amPHL - JAC
1 stop10h 00mAmerican Airlines
Deal found 7/13$325
This Delta deal was found by Cheapflights users on 7/14. 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 9/91:30 pmBOI - PHL
1 stop9h 26mDelta
Wed 9/106:00 amPHL - BOI
2 stops10h 01mDelta
Deal found 7/14$330
This Mytrip deal was found by Cheapflights users on 7/13. 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 8/143:46 pmGEG - PHL
2 stops15h 10mMultiple Airlines
Sat 8/167:07 pmPHL - GEG
2 stops23h 46mMultiple Airlines
Deal found 7/13$331
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Fri 8/86:12 pmIDA - PHL
2 stops13h 11mMultiple Airlines
Sun 8/103:21 pmPHL - IDA
2 stops22h 23mMultiple Airlines
Deal found 7/13$347
This Southwest deal was found by Cheapflights users on 7/13. 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 11/126:05 amGEG - PHL
2 stops12h 10mSouthwest
Sat 11/153:40 pmPHL - GEG
1 stop8h 05mSouthwest
Deal found 7/13$352
This Frontier deal was found by Cheapflights users on 7/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2812:33 pmBOI - PHL
2 stops19h 19mFrontier
Thu 9/46:45 amPHL - BOI
1 stop6h 55mFrontier
Deal found 7/14$376

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 July 14, 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

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 9/5

9:16 pm-8:51 pm

1 stop21h 35m

Philadelphia

Sun 9/7

5:21 pm-8:21 pm

1 stop29h 00m

$209

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 11/12

1:40 pm-9:18 am

1 stop16h 38m

Philadelphia

Sat 11/15

7:06 am-12:53 pm

1 stop8h 47m

$315

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 9/18

2:16 pm-6:10 am

1 stop13h 54m

Philadelphia

Sun 9/21

6:35 am-3:45 pm

2 stops11h 10m

$318

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Mon 8/11

7:05 pm-5:45 am

1 stop7h 40m

Philadelphia

Sat 8/23

5:00 pm-10:30 pm

1 stop8h 30m

$323

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 8/28

1:10 pm-12:24 am

1 stop9h 14m

Philadelphia

Thu 9/4

5:00 am-12:48 pm

1 stop9h 48m

$323

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

Thu 8/7

12:55 pm-12:45 am

1 stop9h 50m

Philadelphia

Mon 8/11

6:38 am-2:38 pm

1 stop10h 00m

$325

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 9/9

1:30 pm-12:56 am

1 stop9h 26m

Philadelphia

Wed 9/10

6:00 am-2:01 pm

2 stops10h 01m

$330

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 8/14

3:46 pm-9:56 am

2 stops15h 10m

Philadelphia

Sat 8/16

7:07 pm-3:53 pm

2 stops23h 46m

$331

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Fri 8/8

6:12 pm-9:23 am

2 stops13h 11m

Philadelphia

Sun 8/10

3:21 pm-11:44 am

2 stops22h 23m

$347

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 11/12

6:05 am-9:15 pm

2 stops12h 10m

Philadelphia

Sat 11/15

3:40 pm-8:45 pm

1 stop8h 05m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Showing 1-10 of 49 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.

Reviews of airlines servicing Delaware

Get insights into the airlines that provide service to Delaware. 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 Delaware. Reviews last updated July 14, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Idaho to Delaware by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,956 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,571 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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.

  • What are the cheapest airlines to fly from Idaho to Delaware one-way?

    One-way options have recently been found by users for as low as $97 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $115 and American Airlines from $146 one-way.

  • 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.

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