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Dulles Intl

$132+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Jun 19 — Jun 261
Fri 6/19
Fri 6/26
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 May 20, 2026.

This Delta deal was found by Cheapflights users on 5/18. 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.
Thu 8/611:35 pm
BOI
-
IAD
1 stop7h 44m
Delta
Thu 8/207:10 am
IAD
-
BOI
1 stop10h 08m
Delta
Deal found 5/18$263
This American Airlines deal was found by Cheapflights users on 5/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:10 pm
BOI
-
IAD
1 stop8h 37m
American Airlines
Tue 9/296:58 am
IAD
-
BOI
2 stops11h 52m
American Airlines
Deal found 5/19$268
This Delta deal was found by Cheapflights users on 5/20. 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.
Thu 8/611:35 pm
BOI
-
IAD
1 stop7h 44m
Delta
Mon 8/106:56 pm
IAD
-
BOI
1 stop7h 03m
Delta
Deal found 5/20$293
This Delta deal was found by Cheapflights users on 5/18. 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 9/2511:30 pm
BOI
-
IAD
1 stop8h 20m
Delta
Thu 10/17:10 am
IAD
-
BOI
1 stop9h 12m
Delta
Deal found 5/18$297
This Delta deal was found by Cheapflights users on 5/18. 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.
Thu 9/2411:30 pm
BOI
-
IAD
1 stop7h 40m
Delta
Thu 10/17:10 am
IAD
-
BOI
1 stop9h 12m
Delta
Deal found 5/18$311
This Delta deal was found by Cheapflights users on 5/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:35 pm
BOI
-
IAD
1 stop8h 28m
Delta
Mon 8/247:10 am
IAD
-
BOI
1 stop10h 08m
Delta
Deal found 5/17$317
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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.
Tue 8/118:00 pm
BOI
-
IAD
1 stop20h 45m
Alaska Airlines
Tue 8/186:03 am
IAD
-
BOI
1 stop10h 04m
Alaska Airlines
Deal found 5/18$326
This Delta deal was found by Cheapflights users on 5/18. 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 10/911:30 pm
BOI
-
IAD
1 stop7h 41m
Delta
Sun 10/117:05 am
IAD
-
BOI
1 stop9h 17m
Delta
Deal found 5/18$331
This American Airlines deal was found by Cheapflights users on 5/18. 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 8/116:44 am
BOI
-
IAD
2 stops14h 11m
American Airlines
Tue 8/186:10 am
IAD
-
BOI
1 stop7h 17m
American Airlines
Deal found 5/18$337
This Delta deal was found by Cheapflights users on 5/18. 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.
Thu 10/811:30 pm
BOI
-
IAD
1 stop7h 41m
Delta
Sun 10/117:05 am
IAD
-
BOI
1 stop9h 17m
Delta
Deal found 5/18$345

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 May 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$263
(Delta)

One-way from

$132
(Delta)

Popular in

July

Cheapest in

May

Average price

$316
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
Highest demand for flights based on searches. 14% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 20, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 8/6

11:35 pm-9:19 am

1 stop7h 44m

Washington, D.C. Dulles Intl

Mon 8/10

6:56 pm-11:59 pm

1 stop7h 03m

$263

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 6/27

11:55 am-12:25 am

1 stop10h 30m

Washington, D.C. Dulles Intl

Sat 7/4

6:00 am-1:51 pm

1 stop9h 51m

$263

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 9/25

11:30 pm-9:50 am

1 stop8h 20m

Washington, D.C. Dulles Intl

Thu 10/1

7:10 am-3:38 pm

1 stop10h 28m

$297

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 9/24

1:43 pm-12:10 am

1 stop8h 27m

Washington, D.C. Dulles Intl

Thu 10/1

7:10 am-3:38 pm

1 stop10h 28m

$311

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 9/4

11:30 pm-9:50 am

1 stop8h 20m

Washington, D.C. Dulles Intl

Wed 9/9

6:15 am-2:03 pm

1 stop9h 48m

$317

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 10/9

2:35 pm-11:51 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

Sun 10/11

7:05 am-2:22 pm

1 stop9h 17m

$331

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 8/27

7:05 pm-7:00 am

1 stop9h 55m

Washington, D.C. Dulles Intl

Mon 8/31

6:42 am-3:31 pm

1 stop10h 49m

$373

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 8/6

8:00 pm-6:45 pm

1 stop20h 45m

Washington, D.C. Dulles Intl

Mon 8/10

6:03 am-9:38 pm

2 stops17h 35m

$450

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 6/19

11:45 pm-10:22 am

1 stop8h 37m

Washington, D.C. Dulles Intl

Thu 6/25

7:00 am-3:12 pm

1 stop10h 12m

$465

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 7/2

12:14 pm-10:53 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

Thu 7/9

6:03 am-2:07 pm

1 stop10h 04m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Showing 1-10 of 21 resultsSorted by cheapest first
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3

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, May is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $316). Flying from Boise to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $642). 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 May 20, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta 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
7.9
Good
12,385 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,385 reviews
Alaska Airlines
7.9
Good
12,385 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Southwest
7.9
Good
4,284 reviews
Alaska Airlines
7.9
Good
12,385 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,452 reviews
Alaska Airlines
7.9
Good
12,385 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
United Airlines
7.4
Good
9,738 reviews
Alaska Airlines
7.9
Good
12,385 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 fly from Boise to Washington, D.C. Dulles Intl Airport in about 7h 44m. The time it takes to get you to your destination can typically vary by up to . There are 2019 mi between Boise and Washington, D.C. Dulles Intl Airport.

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

    Flying on Delta is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $232. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at $245 and $278, respectively. You may be able to fly from Boise to Washington, D.C. Dulles Intl Airport for 51% 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, May is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $316). Flying from Boise to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $642). 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
Owings Mills
Springfield
Arlington
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Hanover
Chantilly
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Reston
Hunt Valley

Browse thousands of different options on Cheapflights for your next trip

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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 May 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$232Average$326FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$245Average$464FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$278Average$525FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$340Average$475FlexibilityNo cancel feeOn-time63%

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