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Dulles Intl

$115+ Cheap flights from Boise (BOI) to Dulles Intl (IAD)

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Find flight deals from Boise to Dulles Intl

Cheapest flights from Boise to Dulles Intl
Explore the most affordable flight options available from Boise to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This Delta deal was found by Cheapflights users on 11/19. 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 12/33:13 pmBOI - IAD
1 stop6h 49mDelta
Wed 12/107:15 amIAD - BOI
1 stop10h 47mDelta
Deal found 11/19$293
This Delta deal was found by Cheapflights users on 11/19. 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 12/611:10 amBOI - IAD
2 stops10h 52mDelta
Wed 12/106:00 amIAD - BOI
2 stops12h 02mDelta
Deal found 11/19$303
This Delta deal was found by Cheapflights users on 11/18. 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 12/121:54 pmBOI - IAD
1 stop7h 33mDelta
Tue 12/166:03 amIAD - BOI
2 stops14h 48mDelta
Deal found 11/18$311
This Delta deal was found by Cheapflights users on 11/19. 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 12/33:13 pmBOI - IAD
1 stop6h 49mDelta
Tue 12/97:15 amIAD - BOI
1 stop10h 47mDelta
Deal found 11/19$321
This Delta deal was found by Cheapflights users on 11/19. 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 12/311:44 amBOI - IAD
1 stop9h 43mDelta
Sat 12/66:03 amIAD - BOI
2 stops11h 59mDelta
Deal found 11/19$326
This American Airlines deal was found by Cheapflights users on 11/18. 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 12/91:17 pmBOI - IAD
1 stop7h 42mAmerican Airlines
Thu 12/116:00 amIAD - BOI
1 stop8h 34mAmerican Airlines
Deal found 11/18$340
This Alaska Airlines deal was found by Cheapflights users on 11/18. 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.
Fri 12/126:03 amBOI - IAD
1 stop22h 03mAlaska Airlines
Mon 12/155:37 pmIAD - BOI
2 stops21h 08mAlaska Airlines
Deal found 11/18$341
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/126:03 amBOI - IAD
1 stop22h 03mAlaska Airlines
Sun 12/147:34 amIAD - BOI
1 stop29h 00mAlaska Airlines
Deal found 11/20$344

Cheap flight deals from Boise to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Dulles Intl (IAD). 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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$287
(Alaska Airlines)

One-way from

$115
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$400
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. Dulles Intl flights.
Search Deals
From Boise Air Term. Gowen Fld to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Dulles Intl 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 20, 2025.
Use the filters below to find and compare flights from Boise to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Boise

Fly to

Dulles Intl

Route

Depart

Return

Price

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 2/2

5:55 pm-4:26 pm

1 stop20h 31m

Washington, D.C. Dulles Intl

Tue 2/10

6:04 pm-12:51 pm

1 stop20h 47m

$287

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 12/3

5:35 am-9:29 pm

2 stops13h 54m

Washington, D.C. Dulles Intl

Wed 12/10

6:56 pm-12:09 am

1 stop7h 13m

$298

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 1/30

6:23 am-4:26 pm

1 stop8h 03m

Washington, D.C. Dulles Intl

Tue 2/3

6:04 pm-9:20 am

2 stops17h 16m

$301

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 1/16

1:40 pm-11:10 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Tue 1/20

7:05 am-6:28 pm

2 stops13h 23m

$311

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 12/12

1:54 pm-11:27 pm

1 stop7h 33m

Washington, D.C. Dulles Intl

Tue 12/16

6:03 am-2:18 pm

1 stop10h 15m

$316

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 12/12

6:03 am-6:06 am

1 stop22h 03m

Washington, D.C. Dulles Intl

Tue 12/16

7:34 am-10:56 pm

1 stop17h 22m

$326

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 1/16

1:55 pm-4:26 pm

1 stop24h 31m

Washington, D.C. Dulles Intl

Tue 1/20

6:04 pm-11:01 pm

1 stop30h 57m

$326

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 12/12

6:03 am-6:06 am

1 stop22h 03m

Washington, D.C. Dulles Intl

Mon 12/15

7:34 am-10:56 pm

1 stop17h 22m

$326

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 2/26

5:40 am-5:20 pm

2 stops9h 40m

Washington, D.C. Dulles Intl

Sun 3/1

7:05 am-5:35 pm

1 stop12h 30m

$330

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 12/3

5:35 am-9:29 pm

2 stops13h 54m

Washington, D.C. Dulles Intl

Sat 12/6

6:03 am-6:52 pm

2 stops14h 49m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 19 results
1
2

Compare providers for flights from Boise to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Dulles Intl in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boise-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Dulles Intl

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

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

Currently, April is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $141). Flying from Boise to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $483). 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 BOI to IAD?

Find hourly flight availability from Boise to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

It’s typically best to fly out from Boise to Washington, D.C. Dulles Intl Airport in the evening. Doing so could potentially save you 13% on the flight price compared to flying in the afternoon, which is usually more expensive.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated November 20, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Boise to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,321 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Alaska Airlines
8.0
Very good
11,321 reviews
Alaska Airlines
8.0
Very good
11,321 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Southwest
8.0
Very good
4,249 reviews
Alaska Airlines
8.0
Very good
11,321 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Delta
7.9
Good
8,002 reviews
Alaska Airlines
8.0
Very good
11,321 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
United Airlines
7.4
Good
9,028 reviews
Alaska Airlines
8.0
Very good
11,321 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.

Related info for your journey

Find useful and relevant information for your journey from Boise to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boise to Washington, D.C. Dulles Intl?

    Located just 3.3 mi from the city center, Boise Air Term. Gowen Fld is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Boise. Booking flights from Air Term. Gowen Fld (BOI) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 4 different airlines.

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

    Airlines like Alaska Airlines and Delta fly from Boise to Washington, D.C. Dulles Intl Airport in about 13h 54m. The time it takes to get you to your destination can typically vary by up to 6h 37m. There are 2019 mi between Boise and Washington, D.C. Dulles Intl Airport. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Boise to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $141. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $278 and $290, respectively. You may be able to fly from Boise to Washington, D.C. Dulles Intl Airport for 71% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boise to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $115. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Boise to Washington, D.C. Dulles Intl Airport for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to Dulles Intl 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 Boise to Washington, D.C. Dulles Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $141). Flying from Boise to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $483). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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Top 4 airlines flying from Boise to Dulles Intl

Discover the top 4 airlines that operate flights from Boise to Dulles Intl. 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$321FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$278Average$511FlexibilityNo cancel feeOn-time69%
DeltaCheapest$290Average$384FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$389Average$478FlexibilityNo cancel feeOn-time63%

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