Idaho

$113+ Cheap flights from Dulles Intl (IAD) to Idaho

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Jul 30 — Aug 61
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Cheap flight deals from Dulles Intl to Idaho

Keep the following information in mind while searching for Dulles Intl to Idaho flight deals. Data was last updated July 25, 2025.

Round-trip from

$223
(American Airlines)

One-way from

$113
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$439
From Washington, D.C. Dulles Intl to Idaho
One-way flight from Washington, D.C. Dulles Intl to Idaho
Highest demand for flights based on searches. 19% potential increase in price ($106 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Dulles Intl to Idaho

Cheapest flights from Dulles Intl to Idaho
Explore the most affordable flight options available from Dulles Intl to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

This American Airlines deal was found by Cheapflights users on 7/24. 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.
Tue 8/2611:51 amIAD - JAC
1 stop8h 55mAmerican Airlines
Tue 9/97:39 amJAC - IAD
1 stop7h 11mAmerican Airlines
Deal found 7/24$223
This Trip.com deal was found by Cheapflights users on 7/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/187:30 amIAD - BOI
1 stop11h 41mMultiple Airlines
Thu 8/216:06 pmBOI - IAD
1 stop10h 24mMultiple Airlines
Deal found 7/23$236
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Mon 9/16:35 amIAD - JAC
1 stop6h 55mUnited Airlines
Thu 9/47:00 amJAC - IAD
1 stop6h 34mUnited Airlines
Deal found 7/23$254
This Delta deal was found by Cheapflights users on 7/24. 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 9/1512:35 pmIAD - JAC
1 stop9h 14mDelta
Wed 9/241:00 pmJAC - IAD
1 stop8h 33mDelta
Deal found 7/24$257
This Hawaiian Airlines deal was found by Cheapflights users on 7/24. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/237:00 amIAD - BOI
1 stop10h 54mHawaiian Airlines
Tue 9/306:35 amBOI - IAD
1 stop8h 34mHawaiian Airlines
Deal found 7/24$278
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 8/236:09 pmIAD - BOI
1 stop7h 50mAlaska Airlines
Sat 8/307:17 pmBOI - IAD
1 stop10h 15mAlaska Airlines
Deal found 7/24$279
This Delta deal was found by Cheapflights users on 7/24. 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 8/236:15 amIAD - BOI
1 stop9h 46mDelta
Sat 8/3010:45 amBOI - IAD
2 stops10h 41mDelta
Deal found 7/24$284
This Trip.com deal was found by Cheapflights users on 7/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:09 pmIAD - GEG
1 stop9h 10mHawaiian Airlines
Fri 9/128:51 pmGEG - IAD
1 stop7h 42mHawaiian Airlines
Deal found 7/22$287
This American Airlines deal was found by Cheapflights users on 7/23. 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 12/411:30 amIAD - BOI
1 stop11h 54mAmerican Airlines
Sat 1/101:43 pmBOI - IAD
1 stop6h 35mAmerican Airlines
Deal found 7/23$288
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Mon 8/186:32 amIAD - BOI
1 stop9h 26mUnited Airlines
Sat 8/237:00 amBOI - IAD
1 stop6h 34mUnited Airlines
Deal found 7/24$293
This Delta deal was found by Cheapflights users on 7/22. 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 8/153:26 pmIAD - GEG
1 stop9h 18mDelta
Mon 8/255:30 pmGEG - IAD
1 stop9h 25mDelta
Deal found 7/22$297
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 8/319:00 amIAD - GEG
1 stop9h 52mAlaska Airlines
Thu 9/47:44 pmGEG - IAD
1 stop8h 49mAlaska Airlines
Deal found 7/24$298

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Idaho 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 25, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Idaho that are best for you.

Fly from

Dulles Intl

Fly to

Idaho

Route

Depart

Return

Price

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Tue 8/26

11:51 am-6:46 pm

1 stop8h 55m

Jackson Hole

Tue 9/9

7:39 am-4:50 pm

1 stop7h 11m

$223

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Mon 8/18

7:30 am-5:11 pm

1 stop11h 41m

Boise Air Term. Gowen Fld

Thu 8/21

6:06 pm-6:30 am

1 stop10h 24m

$236

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Mon 9/1

6:35 am-11:30 am

1 stop6h 55m

Jackson Hole

Thu 9/4

7:00 am-3:34 pm

1 stop6h 34m

$254

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Mon 9/15

12:35 pm-7:49 pm

1 stop9h 14m

Jackson Hole

Wed 9/24

1:00 pm-11:33 pm

1 stop8h 33m

$257

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 9/23

7:00 am-3:54 pm

1 stop10h 54m

Boise Air Term. Gowen Fld

Tue 9/30

6:35 am-5:09 pm

1 stop8h 34m

$278

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 8/23

6:09 pm-11:59 pm

1 stop7h 50m

Boise Air Term. Gowen Fld

Sat 8/30

7:17 pm-7:32 am

1 stop10h 15m

$279

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 8/23

6:15 am-2:01 pm

1 stop9h 46m

Boise Air Term. Gowen Fld

Sat 8/30

10:45 am-11:26 pm

2 stops10h 41m

$284

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Fri 9/5

6:09 pm-12:19 am

1 stop9h 10m

Spokane

Fri 9/12

8:51 pm-7:33 am

1 stop7h 42m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Mon 8/18

6:32 am-1:58 pm

1 stop9h 26m

Boise Air Term. Gowen Fld

Sat 8/23

7:00 am-3:34 pm

1 stop6h 34m

$293

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Fri 8/15

3:26 pm-9:44 pm

1 stop9h 18m

Spokane

Mon 8/25

5:30 pm-5:55 am

1 stop9h 25m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 58 results
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Best time to book a flight from Dulles Intl to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Idaho

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Idaho?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho (average of $314). Flying from Washington, D.C. Dulles Intl Airport to Idaho in June is currently the most expensive (average of $399). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to ID?

Find hourly flight availability from Dulles Intl to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Idaho?

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated July 25, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Washington, D.C. Dulles Intl Airport to Idaho to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.8

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
8.0
Very good

Comfort

7.8

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Idaho. 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 Washington, D.C. Dulles Intl Airport to Idaho one-way?

    One-way options have recently been found by users for as low as $113 on American Airlines. Other airlines that offer cheap prices include Delta from $129 and Hawaiian Airlines from $139 one-way.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Idaho?

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

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

  • How can I find direct flights from Dulles Intl to Idaho?

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

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

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

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho (average of $314). Flying from Washington, D.C. Dulles Intl Airport to Idaho in June is currently the most expensive (average of $399). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Dulles Intl to Idaho

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

Top 4 airlines flying from Dulles Intl to Idaho

Discover the top 4 airlines that operate flights from Dulles Intl to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$230Average$527FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$585FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$326Average$617FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$428Average$549FlexibilityNo cancel feeOn-time63%

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