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$125+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$267
(Delta)

One-way from

$125
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$453
From Washington, D.C. Dulles Intl to Idaho
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One-way flight from Washington, D.C. Dulles Intl to Idaho
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Highest demand for flights based on searches. 18% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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 10/306:15 amIAD - JAC
1 stop7h 50mDelta
Mon 11/31:00 pmJAC - IAD
1 stop8h 33mDelta
Deal found 9/16$267
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/156:30 amIAD - JAC
1 stop6h 50mUnited Airlines
Wed 10/222:30 pmJAC - IAD
1 stop6h 52mUnited Airlines
Deal found 9/16$274
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 10/156:25 amIAD - BOI
1 stop8h 45mHawaiian Airlines
Mon 10/208:26 pmBOI - IAD
1 stop9h 07mHawaiian Airlines
Deal found 9/17$308
This Delta deal was found by Cheapflights users on 9/15. 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 10/157:35 amIAD - BOI
1 stop10h 31mDelta
Sat 10/181:39 pmBOI - IAD
1 stop7h 39mDelta
Deal found 9/15$309
This Delta deal was found by Cheapflights users on 9/15. 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 10/157:35 amIAD - BOI
1 stop10h 31mDelta
Mon 10/207:45 pmBOI - IAD
2 stops13h 41mDelta
Deal found 9/15$314
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 10/186:25 amIAD - GEG
1 stop9h 12mHawaiian Airlines
Sat 10/257:30 amGEG - IAD
1 stop7h 58mHawaiian Airlines
Deal found 9/17$316
This Delta deal was found by Cheapflights users on 9/15. 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 10/187:35 amIAD - GEG
1 stop8h 00mDelta
Sat 10/251:10 pmGEG - IAD
1 stop7h 23mDelta
Deal found 9/15$317
This Delta deal was found by Cheapflights users on 9/16. 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 12/1011:58 amIAD - JAC
2 stops11h 31mDelta
Mon 12/157:00 amJAC - IAD
2 stops9h 24mDelta
Deal found 9/16$318
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/46:00 amIAD - BOI
1 stop8h 34mAmerican Airlines
Sat 1/107:32 amBOI - IAD
1 stop6h 35mAmerican Airlines
Deal found 9/14$321
This Delta deal was found by Cheapflights users on 9/15. 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 10/237:35 amIAD - BOI
1 stop10h 31mDelta
Sat 10/2511:12 amBOI - IAD
2 stops9h 48mDelta
Deal found 9/15$326
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/156:30 amIAD - JAC
1 stop6h 50mUnited Airlines
Thu 10/232:30 pmJAC - IAD
1 stop6h 52mUnited Airlines
Deal found 9/15$331
This Hawaiian Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/156:25 amIAD - GEG
1 stop9h 12mHawaiian Airlines
Mon 10/207:34 pmGEG - IAD
1 stop8h 59mHawaiian Airlines
Deal found 9/16$332

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 September 17, 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 1/27

6:00 am-1:05 pm

1 stop9h 05m

Jackson Hole

Sat 1/31

2:30 pm-8:45 pm

Nonstop4h 15m

$269

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Wed 10/15

6:30 am-11:20 am

1 stop6h 50m

Jackson Hole

Wed 10/22

2:30 pm-11:22 pm

1 stop6h 52m

$274

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Sun 2/8

6:00 am-1:05 pm

1 stop9h 05m

Jackson Hole

Sat 2/14

7:00 am-3:38 pm

1 stop6h 38m

$309

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Wed 2/18

6:10 am-12:34 pm

2 stops8h 24m

Jackson Hole

Thu 2/26

2:28 pm-12:07 am

1 stop7h 39m

$314

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 10/15

7:35 am-4:06 pm

1 stop10h 31m

Boise Air Term. Gowen Fld

Mon 10/20

7:45 pm-11:26 am

2 stops13h 41m

$314

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 10/18

6:25 am-12:37 pm

1 stop9h 12m

Spokane

Sat 10/25

7:30 am-6:28 pm

1 stop7h 58m

$316

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 10/18

6:25 am-12:37 pm

1 stop9h 12m

Spokane

Sat 10/25

7:30 am-6:28 pm

1 stop7h 58m

$316

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Fri 10/31

5:40 pm-11:56 pm

1 stop9h 16m

Spokane

Tue 11/4

7:39 pm-6:23 am

1 stop7h 44m

$316

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 10/11

7:35 am-2:57 pm

1 stop10h 22m

Spokane

Wed 10/15

1:15 pm-12:40 am

1 stop8h 25m

$317

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 3/3

7:00 am-1:45 pm

1 stop8h 45m

Boise Air Term. Gowen Fld

Wed 3/4

7:00 am-5:25 pm

1 stop8h 25m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 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 $398). 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 September 17, 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.

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 September 17, 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Idaho?

    A quick flight from Washington, D.C. Dulles Intl Airport to Idaho can take about 8h 24m. United Airlines provides one of the quickest options available for as low as $314. Airlines will cover a distance of 1745 mi. This flight may include one or multiple stops.

  • 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 $148 on Alaska Airlines. Other airlines that offer cheap prices include Hawaiian Airlines from $148 and United Airlines from $149 one-way.

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

    The most popular flight routes from Washington, D.C. Dulles Intl Airport to Idaho are Washington, D.C. Dulles Intl - Jackson Hole, Washington, D.C. Dulles Intl - Boise Air Term. Gowen Fld and Washington, D.C. Dulles Intl - Spokane.

  • 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 $398). 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.

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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.
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Baltimore to Boston flights
Reagan-National to Dallas/Fort Worth flights
Dulles Intl to O'Hare Intl flights
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Baltimore to O'Hare Intl flights
Reagan-National to Los Angeles flights
Dulles Intl to Miami flights
Dulles Intl to Los Angeles flights
Reagan-National to O'Hare Intl flights
Dulles Intl to Las Vegas flights
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Reagan-National to Boston flights
Reagan-National to Miami flights
Reagan-National to Las Vegas flights
Dulles Intl to Seattle flights
Baltimore to Fort Lauderdale flights
Reagan-National to Orlando flights
Baltimore to Orlando flights
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Baltimore to Midway flights
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Reagan-National to San Francisco flights
Baltimore to Los Angeles flights
Reagan-National to Seattle flights
Reagan-National to Atlanta flights
Baltimore to Atlanta flights
Dulles Intl to San Francisco flights
Dulles Intl to Hobby flights
Baltimore to Seattle flights
Baltimore to Miami flights
Baltimore to Hobby flights
Baltimore to Denver flights
Dulles Intl to Sky Harbor Intl flights
Dulles Intl to Tampa flights
Dulles Intl to Detroit flights
Dulles Intl to New Orleans flights
Dulles Intl to Midway flights
Dulles Intl to Denver flights
Baltimore to New Orleans flights
Baltimore to Sky Harbor Intl flights
Dulles Intl to Austin flights
Dulles Intl to John F Kennedy Intl flights
Reagan-National to Fort Lauderdale flights
Reagan-National to Minneapolis flights
Dulles Intl to Fort Lauderdale flights
Dulles Intl to George Bush Intcntl flights

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$230Average$527FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$550FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$314Average$626FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$389Average$537FlexibilityNo cancel feeOn-time63%

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