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Dulles Intl

$179+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Feb 4 — Feb 111
Wed 2/4
Wed 2/11
1 adult, Economy
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Cheap 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 January 5, 2026.

This Delta deal was found by Cheapflights users on 1/5. 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 3/710:41 amBOI - IAD
1 stop10h 29mDelta
Sat 3/147:00 amIAD - BOI
1 stop8h 05mDelta
Deal found 1/5$287
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:28 amBOI - IAD
1 stop8h 52mHawaiian Airlines
Sat 2/287:05 amIAD - BOI
1 stop17h 35mHawaiian Airlines
Deal found 1/3$288
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 2/196:28 amBOI - IAD
1 stop8h 52mAlaska Airlines
Sat 2/287:05 amIAD - BOI
1 stop17h 35mAlaska Airlines
Deal found 1/4$297
This Delta deal was found by Cheapflights users on 1/4. 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.
Tue 3/310:41 amBOI - IAD
1 stop10h 29mDelta
Sat 3/712:38 pmIAD - BOI
2 stops11h 18mDelta
Deal found 1/4$303
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 3/46:00 pmBOI - IAD
1 stop21h 20mAlaska Airlines
Sun 3/87:05 amIAD - BOI
1 stop10h 03mAlaska Airlines
Deal found 1/4$307
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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.
Tue 3/36:28 amBOI - IAD
1 stop8h 52mAlaska Airlines
Sat 3/77:05 amIAD - BOI
1 stop17h 35mAlaska Airlines
Deal found 1/4$316
This Delta deal was found by Cheapflights users on 1/4. 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.
Sun 2/110:39 amBOI - IAD
1 stop10h 31mDelta
Sun 2/87:30 amIAD - BOI
1 stop10h 47mDelta
Deal found 1/4$327
This Delta deal was found by Cheapflights users on 1/4. 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.
Mon 2/210:39 amBOI - IAD
1 stop10h 31mDelta
Mon 2/92:15 pmIAD - BOI
1 stop8h 40mDelta
Deal found 1/4$345
This United Airlines deal was found by Cheapflights users on 1/3. 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 3/32:40 pmBOI - IAD
1 stop6h 39mUnited Airlines
Sat 3/74:03 pmIAD - BOI
1 stop7h 31mUnited Airlines
Deal found 1/3$347
This Southwest deal was found by Cheapflights users on 1/3. 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.
Tue 3/36:40 amBOI - IAD
1 stop8h 10mSouthwest
Sat 3/75:50 amIAD - BOI
2 stops10h 35mSouthwest
Deal found 1/3$352

Find 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 January 5, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$240
(Southwest)

One-way from

$179
(Southwest)

Popular in

March

Cheapest in

February

Average price

$493
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. Dulles Intl flight deals.
Search Deals
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
High demand for flights, 7% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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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 January 5, 2026.
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

Sat 3/7

10:41 am-11:10 pm

1 stop10h 29m

Washington, D.C. Dulles Intl

Sat 3/14

7:00 am-1:05 pm

1 stop8h 05m

$287

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 2/2

3:43 pm-4:26 pm

1 stop22h 43m

Washington, D.C. Dulles Intl

Mon 2/9

6:04 pm-10:52 am

1 stop18h 48m

$287

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 3/6

1:51 pm-11:10 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

Mon 3/9

7:00 am-4:00 pm

1 stop11h 00m

$287

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 2/19

6:28 am-5:20 pm

1 stop8h 52m

Washington, D.C. Dulles Intl

Sat 2/28

7:05 am-10:40 pm

1 stop17h 35m

$297

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 2/2

1:40 pm-11:10 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Mon 2/9

2:15 pm-11:59 pm

2 stops11h 44m

$303

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 3/3

1:51 pm-11:10 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

Sat 3/7

12:38 pm-9:56 pm

2 stops11h 18m

$303

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 3/4

1:00 pm-5:20 pm

1 stop26h 20m

Washington, D.C. Dulles Intl

Sun 3/8

7:05 am-10:40 pm

1 stop17h 35m

$307

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 2/7

5:40 am-7:09 pm

2 stops11h 29m

Washington, D.C. Dulles Intl

Thu 2/12

10:08 am-9:56 pm

2 stops13h 48m

$318

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sun 2/1

10:39 am-11:10 pm

1 stop10h 31m

Washington, D.C. Dulles Intl

Sun 2/8

7:30 am-4:17 pm

1 stop10h 47m

$327

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sun 2/15

10:41 am-11:10 pm

1 stop10h 29m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 17 results
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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 January.
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.

How much does it cost to fly round-trip from Boise to Washington, D.C. Dulles Intl Airport?

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 January 5, 2026.
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
11,642 reviews

Entertainment

7.0

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,642 reviews
Alaska Airlines
8.0
Very good
11,642 reviews

Entertainment

7.0

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
11,642 reviews

Entertainment

7.0

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,019 reviews
Alaska Airlines
8.0
Very good
11,642 reviews

Entertainment

7.0

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,134 reviews
Alaska Airlines
8.0
Very good
11,642 reviews

Entertainment

7.0

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 Delta and Alaska Airlines fly from Boise to Washington, D.C. Dulles Intl Airport in about 10h 29m. The time it takes to get you to your destination can typically vary by up to 12h 14m. 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 $287, 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.

  • 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
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Upper Marlboro

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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 January 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$321FlexibilityNo cancel feeOn-time75%
DeltaCheapest$287Average$372FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$300Average$518FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$379Average$439FlexibilityNo cancel feeOn-time63%

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