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Dulles Intl

$142+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
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 July 2, 2025.

Round-trip from

$284
(Hawaiian Airlines)

One-way from

$142
(Hawaiian Airlines)

Popular in

December

Cheapest in

February

Average price

$496
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. 14% potential increase in price ($89 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 July 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 July 2, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 6/30. 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 8/278:46 pmBOI - IAD
1 stop8h 46mHawaiian Airlines
Sun 8/317:00 amIAD - BOI
1 stop10h 00mHawaiian Airlines
Deal found 6/30$284
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Wed 10/291:33 pmBOI - IAD
1 stop7h 15mAmerican Airlines
Sat 11/16:11 amIAD - BOI
1 stop8h 27mAmerican Airlines
Deal found 6/30$285
This Delta deal was found by Cheapflights users on 6/30. 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 8/275:30 amBOI - IAD
1 stop5h 55mDelta
Sun 8/316:00 amIAD - BOI
2 stops10h 01mDelta
Deal found 6/30$290
This Southwest deal was found by Cheapflights users on 6/29. 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.
Sat 11/82:25 pmBOI - IAD
1 stop5h 50mSouthwest
Mon 11/105:05 amIAD - BOI
1 stop6h 55mSouthwest
Deal found 6/29$309
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 9/166:35 amBOI - IAD
1 stop8h 34mAlaska Airlines
Fri 9/196:09 pmIAD - BOI
1 stop7h 59mAlaska Airlines
Deal found 7/2$328
This Frontier deal was found by Cheapflights users on 6/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1412:36 pmBOI - IAD
2 stops19h 31mFrontier
Thu 8/218:19 pmIAD - BOI
2 stops17h 19mFrontier
Deal found 6/30$341
This Orbitz deal was found by Cheapflights users on 6/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/68:46 pmBOI - IAD
1 stop8h 41mMultiple Airlines
Sun 8/1011:04 amIAD - BOI
1 stop7h 46mMultiple Airlines
Deal found 6/30$371
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/295:00 amBOI - IAD
1 stop6h 18mUnited Airlines
Sat 11/18:25 amIAD - BOI
1 stop7h 00mUnited Airlines
Deal found 6/30$385

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 July 2, 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 8/27

8:46 pm-7:32 am

1 stop8h 46m

Washington, D.C. Dulles Intl

Sun 8/31

7:00 am-3:00 pm

1 stop10h 00m

$284

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/29

1:33 pm-10:48 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

Sat 11/1

6:11 am-12:38 pm

1 stop8h 27m

$285

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 8/27

5:30 am-1:25 pm

1 stop5h 55m

Washington, D.C. Dulles Intl

Sun 8/31

6:00 am-2:01 pm

2 stops10h 01m

$290

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 11/8

2:25 pm-10:15 pm

1 stop5h 50m

Washington, D.C. Dulles Intl

Mon 11/10

5:05 am-10:00 am

1 stop6h 55m

$309

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 9/16

6:35 am-5:09 pm

1 stop8h 34m

Washington, D.C. Dulles Intl

Fri 9/19

6:09 pm-12:08 am

1 stop7h 59m

$328

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 8/14

12:36 pm-10:07 am

2 stops19h 31m

Washington, D.C. Dulles Intl

Thu 8/21

8:19 pm-11:38 am

2 stops17h 19m

$341

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 8/6

8:46 pm-7:27 am

1 stop8h 41m

Washington, D.C. Dulles Intl

Sun 8/10

11:04 am-4:50 pm

1 stop7h 46m

$371

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/29

5:00 am-1:18 pm

1 stop6h 18m

Washington, D.C. Dulles Intl

Sat 11/1

8:25 am-1:25 pm

1 stop7h 00m

$385

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 7/30

8:46 pm-7:27 am

1 stop8h 41m

$142

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 11/12

7:21 am-7:31 pm

2 stops10h 10m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 17 results
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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, August is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Boise to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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 July 2, 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 July 2, 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

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,540 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Flying on Hawaiian Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $284. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $285 and $290, respectively. You may be able to fly from Boise to Washington, D.C. Dulles Intl Airport for 43% 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 Hawaiian Airlines, with whom users have recently found tickets for as low as $142. However, be on the lookout for offers from American Airlines and Sun Country Air, 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, August is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Boise to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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

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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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$370FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$300Average$499FlexibilityNo cancel feeOn-time69%
DeltaCheapest$300Average$450FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$346Average$484FlexibilityNo cancel feeOn-time63%

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