HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Delaware

$164+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ILG
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Delaware with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho to Delaware

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Delaware (USDE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$186
(FlightHub)

One-way from

$164
(American Airlines)

Popular in

October

Cheapest in

February

Average price

$401
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
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
Search Deals

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 January 30, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/277:41 pmBOI - PHL
1 stop25h 25mSpirit Airlines
Mon 3/35:41 pmPHL - BOI
1 stop27h 05mSpirit Airlines
Deal found 1/29$186
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:55 pmBOI - PHL
1 stop14h 15mSun Country Air
Sun 8/1712:05 pmPHL - BOI
1 stop7h 51mSun Country Air
Deal found 1/29$310
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.
Wed 2/2611:05 amBOI - PHL
1 stop8h 37mUnited Airlines
Wed 3/56:30 amPHL - BOI
1 stop7h 30mUnited Airlines
Deal found 1/29$343
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.
Wed 2/267:30 pmBOI - PHL
2 stops14h 36mDelta
Wed 3/56:00 amPHL - BOI
2 stops12h 16mDelta
Deal found 1/29$353
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/115:34 amGEG - PHL
1 stop8h 09mAmerican Airlines
Tue 4/154:45 pmPHL - GEG
1 stop9h 15mAmerican Airlines
Deal found 1/30$393
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:30 amGEG - PHL
1 stop19h 31mAlaska Airlines
Sat 11/86:35 pmPHL - GEG
1 stop8h 24mAlaska Airlines
Deal found 1/29$396
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.
Thu 6/511:55 amGEG - PHL
1 stop8h 44mDelta
Mon 6/91:00 pmPHL - GEG
2 stops12h 42mDelta
Deal found 1/29$402
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/232:30 pmBOI - PHL
1 stop13h 24mMultiple Airlines
Tue 5/67:04 amPHL - BOI
1 stop8h 43mMultiple Airlines
Deal found 1/28$405
This Southwest deal was found by Cheapflights users on 1/30. 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.
Fri 4/115:25 amGEG - PHL
1 stop9h 45mSouthwest
Tue 4/152:40 pmPHL - GEG
2 stops11h 35mSouthwest
Deal found 1/30$410
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2310:50 amBOI - PHL
1 stop10h 15mSouthwest
Tue 5/62:40 pmPHL - BOI
2 stops10h 50mSouthwest
Deal found 1/28$431
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.
Fri 6/66:25 pmGEG - PHL
1 stop7h 50mUnited Airlines
Tue 6/176:30 amPHL - GEG
1 stop7h 26mUnited Airlines
Deal found 1/29$432
This Delta deal was found by Cheapflights users on 1/30. 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 2/211:10 pmJAC - PHL
1 stop8h 42mDelta
Mon 2/245:40 amPHL - JAC
1 stop9h 38mDelta
Deal found 1/30$445

Find flights from Idaho to Delaware within your budget

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 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 2/27

7:41 pm-11:06 pm

1 stop25h 25m

Philadelphia

Mon 3/3

5:41 pm-6:46 pm

1 stop27h 05m

$186

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 2/26

11:05 am-9:42 pm

1 stop8h 37m

Philadelphia

Wed 3/5

6:30 am-12:00 pm

1 stop7h 30m

$343

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 2/26

7:30 pm-12:06 pm

2 stops14h 36m

Philadelphia

Wed 3/5

6:00 am-4:16 pm

2 stops12h 16m

$353

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 3/12

5:10 am-3:10 pm

1 stop7h 00m

Philadelphia

Wed 3/19

3:55 pm-10:55 pm

1 stop10h 00m

$360

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 6/6

6:25 pm-5:15 am

1 stop7h 50m

Philadelphia

Tue 6/17

8:31 am-5:34 pm

2 stops12h 03m

$402

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 4/23

2:30 pm-5:54 am

1 stop13h 24m

Philadelphia

Tue 5/6

7:04 am-1:47 pm

1 stop8h 43m

$405

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 6/5

5:00 pm-5:46 am

1 stop9h 46m

Philadelphia

Mon 6/9

1:00 pm-10:42 pm

2 stops12h 42m

$422

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 4/23

10:50 am-11:05 pm

1 stop10h 15m

Philadelphia

Tue 5/6

2:40 pm-11:30 pm

2 stops10h 50m

$431

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 2/26

5:34 am-5:23 pm

1 stop8h 49m

Philadelphia

Fri 2/28

4:54 pm-11:07 pm

1 stop9h 13m

$433

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

Fri 2/21

1:10 pm-11:52 pm

1 stop8h 42m

Philadelphia

Mon 2/24

5:40 am-1:18 pm

1 stop9h 38m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 32 results
1
2
3
4

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.

Travel insights for flights from Idaho to Delaware

Get recent, data-driven insights about flights from Idaho to Delaware including ideal travel times, pricing trends, and more.

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 January 30, 2025.
To help decide which airline to fly from Idaho to Delaware, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,686 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,450 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,906 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 $164 on American Airlines. Other airlines that offer cheap prices include Delta from $199 and Alaska Airlines from $228 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
Newark to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Miami flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
Newark to Orlando flights
John F Kennedy Intl to West Palm Beach flights
John F Kennedy Intl to Las Vegas flights
O'Hare Intl to Las Vegas flights
Los Angeles to John F Kennedy Intl flights
Seattle to Sky Harbor Intl flights
John F Kennedy Intl to New Orleans flights
Reagan-National to Miami flights
LaGuardia to Orlando flights
John F Kennedy Intl to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
Dulles Intl to Orlando flights
Baltimore to Fort Lauderdale flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to Sky Harbor Intl flights
Boston to Fort Lauderdale flights
Minneapolis to Sky Harbor Intl flights
Newark to Las Vegas flights
Newark to Dallas/Fort Worth flights
Newark to West Palm Beach flights
Newark to Los Angeles flights
Dallas/Fort Worth to John F Kennedy Intl flights
Newark to Tampa flights
San Francisco to John F Kennedy Intl flights
LaGuardia to Dallas/Fort Worth flights
Boston to Miami flights
LaGuardia to New Orleans flights
Philadelphia to Orlando flights
Dallas/Fort Worth to LaGuardia flights
John F Kennedy Intl to San Francisco flights
Los Angeles to Newark flights
Minneapolis to Las Vegas flights
Los Angeles to Dallas/Fort Worth flights
Seattle to Las Vegas flights
Dulles Intl to Miami flights
O'Hare Intl to John F Kennedy Intl flights
LaGuardia to Hobby flights
Boston to Orlando flights
John F Kennedy Intl to Atlanta flights
John F Kennedy Intl to O'Hare Intl flights
San Francisco to Las Vegas flights
Newark to New Orleans flights
Detroit to Orlando flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.