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Dulles Intl

$126+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
1 adult, Economy
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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 August 21, 2025.

Round-trip from

$264
(Alaska Airlines)

One-way from

$126
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$588
From Boise Air Term. Gowen Fld to Washington, D.C. Dulles Intl
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One-way flight from Boise Air Term. Gowen Fld to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 12% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 21, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 10/294:57 pmBOI - IAD
1 stop11h 26mAlaska Airlines
Sat 11/17:43 amIAD - BOI
1 stop9h 29mAlaska Airlines
Deal found 8/21$264
This Delta deal was found by Cheapflights users on 8/19. 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 10/2211:12 amBOI - IAD
2 stops10h 06mDelta
Tue 10/286:18 amIAD - BOI
1 stop9h 44mDelta
Deal found 8/19$269
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:00 pmBOI - IAD
1 stop6h 40mDelta
Sat 11/19:00 amIAD - BOI
2 stops12h 07mDelta
Deal found 8/20$270
This Hawaiian Airlines deal was found by Cheapflights users on 8/21. 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 9/172:28 pmBOI - IAD
1 stop7h 55mHawaiian Airlines
Wed 9/247:00 amIAD - BOI
1 stop10h 00mHawaiian Airlines
Deal found 8/21$276
This Hawaiian Airlines deal was found by Cheapflights users on 8/19. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:35 pmBOI - IAD
1 stop8h 48mHawaiian Airlines
Sat 10/116:25 amIAD - BOI
1 stop8h 45mHawaiian Airlines
Deal found 8/19$277
This Delta deal was found by Cheapflights users on 8/21. 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 9/201:40 pmBOI - IAD
1 stop7h 37mDelta
Sat 9/276:00 amIAD - BOI
2 stops10h 15mDelta
Deal found 8/21$284
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:30 amBOI - IAD
1 stop9h 40mSouthwest
Tue 12/97:40 amIAD - BOI
2 stops16h 45mSouthwest
Deal found 8/20$287
This Delta deal was found by Cheapflights users on 8/21. 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 9/187:45 pmBOI - IAD
1 stop8h 16mDelta
Wed 9/247:35 amIAD - BOI
1 stop10h 05mDelta
Deal found 8/21$289
This Delta deal was found by Cheapflights users on 8/21. 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 9/201:40 pmBOI - IAD
1 stop7h 37mDelta
Mon 9/297:05 pmIAD - BOI
1 stop6h 54mDelta
Deal found 8/21$290

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 August 21, 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

Wed 10/29

6:05 pm-6:23 am

1 stop10h 18m

Washington, D.C. Dulles Intl

Sat 11/1

7:43 am-3:12 pm

1 stop9h 29m

$264

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/29

4:57 pm-6:23 am

1 stop11h 26m

Washington, D.C. Dulles Intl

Sat 11/1

7:43 am-3:12 pm

1 stop9h 29m

$264

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 10/28

6:05 pm-6:23 am

1 stop10h 18m

Washington, D.C. Dulles Intl

Sat 11/1

7:43 am-3:12 pm

1 stop9h 29m

$264

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/22

11:12 am-11:18 pm

2 stops10h 06m

Washington, D.C. Dulles Intl

Tue 10/28

6:18 am-2:02 pm

1 stop9h 44m

$269

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/29

3:00 pm-11:40 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

Sat 11/1

9:00 am-7:07 pm

2 stops12h 07m

$270

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sun 12/7

5:30 am-5:10 pm

1 stop9h 40m

Washington, D.C. Dulles Intl

Tue 12/9

5:45 pm-11:10 pm

1 stop7h 25m

$276

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 9/17

2:28 pm-12:23 am

1 stop7h 55m

Washington, D.C. Dulles Intl

Wed 9/24

7:00 am-1:48 pm

1 stop8h 48m

$276

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 9/16

7:17 pm-7:33 am

1 stop10h 16m

Washington, D.C. Dulles Intl

Wed 10/1

7:00 am-3:00 pm

1 stop10h 00m

$276

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 1/20

1:43 pm-10:18 pm

1 stop6h 35m

$126

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 9/10

7:17 pm-7:33 am

1 stop10h 16m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 19 results
1
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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, July is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Boise to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 August 21, 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 14% 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 August 21, 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
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Southwest
8.0
Very good
4,245 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
United Airlines
7.4
Good
8,930 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.

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 Hawaiian Airlines, Alaska Airlines, and Delta fly from Boise to Washington, D.C. Dulles Intl Airport in about 10h 06m. The time it takes to get you to your destination can typically vary by up to 1h 20m. 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 Delta and United Airlines, with the lowest prices starting at $290 and $300, 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 American Airlines, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from Alaska Airlines and United 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, July is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Boise to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$370FlexibilityNo cancel feeOn-time75%
DeltaCheapest$290Average$451FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$300Average$499FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$346Average$478FlexibilityNo cancel feeOn-time63%

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