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Delaware

$145+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ILG
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$247
(Cheapflightsfares)

One-way from

$145
(Cheapflightsfares)

Popular in

October

Cheapest in

January

Average price

$465
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Philadelphia flights.
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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. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/1. 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 4/161:52 pmBOI - PHL
1 stop14h 00mSpirit Airlines
Tue 4/2210:08 pmPHL - BOI
1 stop16h 49mSpirit Airlines
Deal found 4/1$247
This Frontier deal was found by Cheapflights users on 4/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2912:36 pmBOI - PHL
1 stop7h 29mFrontier
Sun 6/16:15 amPHL - BOI
1 stop7h 32mFrontier
Deal found 4/1$298
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/65:57 pmGEG - PHL
1 stop9h 33mMultiple Airlines
Mon 6/97:45 amPHL - GEG
1 stop12h 22mMultiple Airlines
Deal found 4/1$306
This Delta deal was found by Cheapflights users on 4/1. 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 4/302:15 pmGEG - PHL
1 stop6h 35mDelta
Wed 5/76:00 amPHL - GEG
1 stop9h 46mDelta
Deal found 4/1$307
This Delta deal was found by Cheapflights users on 4/1. 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 5/71:18 pmBOI - PHL
1 stop9h 39mDelta
Sat 5/107:05 amPHL - BOI
1 stop6h 49mDelta
Deal found 4/1$327
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/306:27 amGEG - PHL
2 stops10h 15mAmerican Airlines
Wed 5/76:39 amPHL - GEG
1 stop8h 46mAmerican Airlines
Deal found 4/1$330
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/262:11 pmBOI - PHL
3 stops42h 24mMultiple Airlines
Tue 4/2910:08 pmPHL - BOI
1 stop16h 49mMultiple Airlines
Deal found 3/31$353
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Wed 7/96:25 pmGEG - PHL
2 stops12h 30mUnited Airlines
Tue 7/156:30 amPHL - GEG
2 stops9h 05mUnited Airlines
Deal found 4/1$360
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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.
Wed 4/166:52 pmBOI - PHL
1 stop9h 08mAlaska Airlines
Tue 4/226:53 pmPHL - BOI
2 stops25h 31mAlaska Airlines
Deal found 4/1$381
This Alaska Airlines deal was found by Cheapflights users on 4/2. 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.
Sat 11/13:30 pmGEG - PHL
2 stops11h 31mAlaska Airlines
Sat 11/87:25 amPHL - GEG
1 stop8h 25mAlaska Airlines
Deal found 4/2$382
This Southwest deal was found by Cheapflights users on 4/1. 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 5/305:05 amBOI - PHL
2 stops9h 55mSouthwest
Mon 6/25:00 amPHL - BOI
1 stop7h 05mSouthwest
Deal found 4/1$413
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/167:05 amBOI - PHL
2 stops8h 50mAmerican Airlines
Tue 4/221:50 pmPHL - BOI
2 stops10h 21mAmerican Airlines
Deal found 4/1$422

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 April 2, 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

Wed 4/16

1:52 pm-5:52 am

1 stop14h 00m

Philadelphia

Tue 4/22

10:08 pm-12:57 pm

1 stop16h 49m

$247

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 5/29

12:36 pm-10:05 pm

1 stop7h 29m

Philadelphia

Sun 6/1

6:15 am-11:47 am

1 stop7h 32m

$298

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 6/6

5:57 pm-6:30 am

1 stop9h 33m

Philadelphia

Mon 6/9

7:45 am-5:07 pm

1 stop12h 22m

$306

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 4/30

2:15 pm-11:50 pm

1 stop6h 35m

Philadelphia

Wed 5/7

6:00 am-12:46 pm

1 stop9h 46m

$307

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 5/7

1:18 pm-12:57 am

1 stop9h 39m

Philadelphia

Sat 5/10

7:05 am-11:54 am

1 stop6h 49m

$327

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 4/30

6:27 am-7:42 pm

2 stops10h 15m

Philadelphia

Wed 5/7

6:39 am-12:25 pm

1 stop8h 46m

$330

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sat 4/26

2:11 pm-10:35 am

3 stops42h 24m

Philadelphia

Tue 4/29

10:08 pm-12:57 pm

1 stop16h 49m

$353

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 7/9

6:25 pm-9:55 am

2 stops12h 30m

Philadelphia

Tue 7/15

6:30 am-12:35 pm

2 stops9h 05m

$360

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 4/16

6:52 pm-6:00 am

1 stop9h 08m

Philadelphia

Tue 4/22

6:53 pm-6:24 pm

2 stops25h 31m

$381

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 5/30

5:05 am-5:00 pm

2 stops9h 55m

Philadelphia

Mon 6/2

5:00 am-10:05 am

1 stop7h 05m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 36 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

Rainfall in Delaware by month

Plan your trip to Delaware by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.

Temperature in Delaware by month

Plan your trip to Delaware by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Delaware, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 April 2, 2025.
To help decide which airline to fly from Idaho to Delaware, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,820 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,898 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,616 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $145 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $172 and American Airlines from $200 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.

See more FAQs

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Alternative routes for Idaho to Delaware

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