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Idaho

$145+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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 12/245:31 pmIAD - BOI
1 stop7h 28mUnited Airlines
Thu 1/16:55 pmBOI - IAD
1 stop8h 27mUnited Airlines
Deal found 12/15$547
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:20 amIAD - GEG
1 stop7h 25mUnited Airlines
Wed 12/314:00 pmGEG - IAD
2 stops22h 30mUnited Airlines
Deal found 12/17$583
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:47 amIAD - GEG
1 stop8h 32mUnited Airlines
Thu 1/15:05 amGEG - IAD
1 stop7h 29mUnited Airlines
Deal found 12/17$592
This Southwest deal was found by Cheapflights users on 12/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:40 amIAD - GEG
2 stops17h 20mSouthwest
Thu 1/16:05 amGEG - IAD
1 stop6h 40mSouthwest
Deal found 12/17$630
This Delta deal was found by Cheapflights users on 12/16. 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.
Sat 12/277:05 amIAD - GEG
1 stop10h 46mDelta
Thu 1/82:00 pmGEG - IAD
1 stop6h 57mDelta
Deal found 12/16$643
This Delta deal was found by Cheapflights users on 12/16. 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.
Sat 12/206:00 amIAD - JAC
1 stop9h 21mDelta
Sat 12/2712:50 pmJAC - IAD
1 stop8h 28mDelta
Deal found 12/16$679
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:20 pmIAD - IDA
1 stop7h 39mUnited Airlines
Mon 1/55:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/17$686
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Sat 12/205:20 pmIAD - IDA
1 stop7h 39mUnited Airlines
Tue 12/305:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/16$696
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/188:20 amIAD - JAC
1 stop9h 04mUnited Airlines
Sun 12/212:07 pmJAC - IAD
1 stop6h 59mUnited Airlines
Deal found 12/16$714
This Delta deal was found by Cheapflights users on 12/16. 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.
Sat 12/206:00 amIAD - JAC
1 stop9h 21mDelta
Mon 12/2912:50 pmJAC - IAD
1 stop8h 28mDelta
Deal found 12/16$719
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/236:20 amIAD - IDA
1 stop9h 10mUnited Airlines
Sun 12/282:30 pmIDA - IAD
1 stop6h 53mUnited Airlines
Deal found 12/16$721
This Delta deal was found by Cheapflights users on 12/16. 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 12/1810:08 amIAD - JAC
2 stops13h 21mDelta
Sun 12/2112:50 pmJAC - IAD
2 stops8h 18mDelta
Deal found 12/16$729

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$274
(Delta)

One-way from

$145
(Delta)

Popular in

December

Cheapest in

April

Average price

$687
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.
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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. 16% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Mon 2/2

2:24 pm-8:42 pm

1 stop8h 18m

Jackson Hole

Wed 2/4

2:40 pm-11:22 pm

1 stop6h 42m

$280

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 1/8

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Thu 1/15

1:40 pm-11:10 pm

1 stop7h 30m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/24

7:05 am-7:32 pm

1 stop14h 27m

Boise Air Term. Gowen Fld

Sat 2/28

6:28 am-5:20 pm

1 stop8h 52m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 1/17

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Wed 1/21

10:39 am-11:10 pm

1 stop10h 31m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 1/17

6:04 pm-12:51 pm

1 stop20h 47m

Boise Air Term. Gowen Fld

Sat 1/24

6:23 am-4:26 pm

1 stop8h 03m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Sun 2/15

1:51 pm-11:10 pm

1 stop7h 19m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Mon 2/23

7:05 am-5:35 pm

1 stop12h 30m

Boise Air Term. Gowen Fld

Sat 2/28

6:28 am-5:20 pm

1 stop8h 52m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 2/14

7:30 am-9:56 pm

1 stop16h 26m

Boise Air Term. Gowen Fld

Thu 2/19

1:51 pm-11:10 pm

1 stop7h 19m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Mon 1/12

6:04 pm-10:52 am

1 stop18h 48m

Boise Air Term. Gowen Fld

Mon 1/19

9:02 am-4:26 pm

1 stop29h 24m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 1/14

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Sat 1/17

1:40 pm-11:10 pm

1 stop7h 30m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho (average of $203). Flying from Washington, D.C. Dulles Intl Airport to Idaho in March is currently the most expensive (average of $376). 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 December 18, 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.

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 December 18, 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
11,474 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,474 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,249 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,006 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 18m. United Airlines provides one of the quickest options available for as low as $280. Airlines will cover a distance of 1745 mi. This flight may include one or multiple stops.

  • 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 - Hailey Sun Valley-Friedman.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho (average of $203). Flying from Washington, D.C. Dulles Intl Airport to Idaho in March is currently the most expensive (average of $376). 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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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$182Average$456FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$549FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$596FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$429Average$504FlexibilityNo cancel feeOn-time63%

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