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Idaho

$158+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This American Airlines deal was found by Cheapflights users on 11/1. 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 12/106:00 amIAD - JAC
1 stop8h 14mAmerican Airlines
Mon 12/151:04 pmJAC - IAD
1 stop7h 55mAmerican Airlines
Deal found 11/1$280
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Wed 12/107:34 amIAD - GEG
1 stop14h 31mAlaska Airlines
Mon 12/157:47 pmGEG - IAD
1 stop17h 49mAlaska Airlines
Deal found 11/2$304
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:15 amIAD - GEG
1 stop10h 40mDelta
Sun 12/141:10 pmGEG - IAD
1 stop7h 17mDelta
Deal found 11/2$305
This Delta deal was found by Cheapflights users on 11/1. 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 12/106:00 amIAD - GEG
2 stops9h 29mDelta
Mon 12/151:10 pmGEG - IAD
1 stop7h 17mDelta
Deal found 11/1$336
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:08 amIAD - JAC
2 stops13h 21mDelta
Tue 12/1612:55 pmJAC - IAD
2 stops9h 17mDelta
Deal found 11/2$339
This Delta deal was found by Cheapflights users on 10/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:03 amIAD - GEG
1 stop10h 11mDelta
Wed 12/35:05 amGEG - IAD
1 stop15h 22mDelta
Deal found 10/31$346
This Delta deal was found by Cheapflights users on 10/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:30 pmIAD - JAC
2 stops10h 59mDelta
Thu 12/252:31 pmJAC - IAD
1 stop6h 21mDelta
Deal found 10/31$350
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 12/67:34 amIAD - BOI
1 stop9h 52mAlaska Airlines
Mon 12/85:59 pmBOI - IAD
1 stop10h 07mAlaska Airlines
Deal found 11/1$352
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1012:30 pmIAD - JAC
2 stops10h 59mDelta
Mon 12/157:00 amJAC - IAD
2 stops14h 27mDelta
Deal found 11/2$353
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Thu 12/47:34 amIAD - BOI
1 stop10h 42mAlaska Airlines
Sat 1/107:55 pmBOI - IAD
1 stop19h 09mAlaska Airlines
Deal found 11/2$355
This American Airlines deal was found by Cheapflights users on 10/31. 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 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 1/107:20 amBOI - IAD
1 stop7h 11mAmerican Airlines
Deal found 10/31$356
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/262:25 pmIAD - JAC
1 stop8h 12mUnited Airlines
Tue 12/27:00 amJAC - IAD
1 stop6h 01mUnited Airlines
Deal found 11/1$361

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$280
(American Airlines)

One-way from

$158
(Alaska Airlines)

Popular in

December

Cheapest in

April

Average price

$455
Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.
Search Deals
From Washington, D.C. Dulles Intl to Idaho
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Idaho
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($111 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 November 3, 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

Wed 3/11

3:58 pm-9:02 pm

1 stop7h 04m

Jackson Hole

Tue 3/17

7:00 am-3:37 pm

1 stop6h 37m

$290

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Thu 12/11

7:34 am-12:24 am

1 stop19h 50m

Spokane

Mon 12/15

7:47 pm-4:36 pm

1 stop17h 49m

$304

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Wed 12/10

7:34 am-9:28 pm

1 stop16h 54m

Spokane

Mon 12/15

7:47 pm-4:36 pm

1 stop17h 49m

$304

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Thu 12/4

6:30 pm-12:24 am

1 stop8h 54m

Spokane

Tue 12/9

9:00 am-4:36 pm

1 stop28h 36m

$304

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Thu 12/11

7:15 am-2:55 pm

1 stop10h 40m

Spokane

Sun 12/14

1:10 pm-11:27 pm

1 stop7h 17m

$305

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

6:28 am-5:55 pm

1 stop9h 27m

$320

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 1/17

12:35 pm-6:07 pm

1 stop7h 32m

Boise Air Term. Gowen Fld

Tue 1/20

6:10 am-3:13 pm

1 stop7h 03m

$321

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 3/3

6:00 am-12:31 pm

1 stop8h 31m

Boise Air Term. Gowen Fld

Wed 3/4

10:36 am-11:11 pm

2 stops10h 35m

$326

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 2/7

4:11 pm-9:52 pm

1 stop7h 41m

Boise Air Term. Gowen Fld

Sun 2/15

10:53 am-8:48 pm

1 stop7h 55m

$336

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:05 am-12:04 pm

1 stop6h 59m

Boise Air Term. Gowen Fld

Sun 2/15

2:00 pm-11:16 pm

1 stop7h 16m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

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, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho (average of $231). Flying from Washington, D.C. Dulles Intl Airport to Idaho in December is currently the most expensive (average of $501). 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 November 3, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 35% on flights from Washington, D.C. Dulles Intl Airport to Idaho by exploring options for tickets at noon.

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 November 3, 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
11,235 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,235 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
8,001 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,996 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 7h 04m. United Airlines provides one of the quickest options available for as low as $290. 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 $158 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $161 and United Airlines from $196 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, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho (average of $231). Flying from Washington, D.C. Dulles Intl Airport to Idaho in December is currently the most expensive (average of $501). 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.
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Baltimore to Tampa flights
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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$182Average$456FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$525FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$620FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$429Average$537FlexibilityNo cancel feeOn-time63%

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