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Boise

$144+ Cheap flights from Dulles Intl (IAD) to Boise (BOI)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap flight deals from Dulles Intl to Boise

Cheapest flights from Dulles Intl to Boise
Explore the most affordable flight options available from Dulles Intl to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 9/297:25 am
IAD
-
BOI
1 stop9h 51m
Delta
Mon 10/511:10 pm
BOI
-
IAD
1 stop8h 02m
Delta
Deal found 7/20$293
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/166:15 am
IAD
-
BOI
1 stop7h 11m
United Airlines
Wed 9/167:05 pm
BOI
-
IAD
1 stop10h 30m
United Airlines
Deal found 7/25$298
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:09 am
IAD
-
BOI
1 stop7h 07m
American Airlines
Sat 8/226:44 am
BOI
-
IAD
1 stop9h 43m
American Airlines
Deal found 7/21$299
This Delta deal was found by Cheapflights users on 7/22. 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 8/206:49 pm
IAD
-
BOI
1 stop7h 10m
Delta
Mon 8/2411:10 pm
BOI
-
IAD
1 stop8h 10m
Delta
Deal found 7/22$303
This Trip.com deal was found by Cheapflights users on 7/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:03 am
IAD
-
BOI
1 stop8h 27m
Alaska Airlines
Tue 9/291:15 pm
BOI
-
IAD
1 stop8h 44m
Alaska Airlines
Deal found 7/24$316
This Delta deal was found by Cheapflights users on 7/20. 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.
Sun 9/278:08 am
IAD
-
BOI
1 stop6h 53m
Delta
Wed 10/712:08 pm
BOI
-
IAD
1 stop8h 31m
Delta
Deal found 7/20$317
This Delta deal was found by Cheapflights users on 7/22. 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 9/177:25 am
IAD
-
BOI
1 stop9h 51m
Delta
Tue 9/2210:34 am
BOI
-
IAD
1 stop10h 22m
Delta
Deal found 7/22$323
This Delta deal was found by Cheapflights users on 7/23. 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 10/297:25 am
IAD
-
BOI
1 stop7h 03m
Delta
Tue 11/35:30 am
BOI
-
IAD
1 stop6h 13m
Delta
Deal found 7/23$325
This Delta deal was found by Cheapflights users on 7/22. 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 10/287:25 am
IAD
-
BOI
1 stop7h 03m
Delta
Sun 11/18:22 am
BOI
-
IAD
1 stop9h 31m
Delta
Deal found 7/22$327
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 9/107:00 am
IAD
-
BOI
1 stop10h 30m
Alaska Airlines
Mon 9/145:52 pm
BOI
-
IAD
1 stop9h 48m
Alaska Airlines
Deal found 7/22$330

Find flight deals from Dulles Intl to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Boise (BOI). 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 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$293
(Delta)

One-way from

$144
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$582
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Boise Air Term. Gowen Fld flights.
Search Deals
From Washington, D.C. Dulles Intl to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Boise 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 25, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Fri 10/16

6:00 am-1:26 pm

1 stop9h 26m

Boise Air Term. Gowen Fld

Mon 10/19

11:35 pm-9:12 am

1 stop7h 37m

$317
Quickest round-trip

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 9/19

6:10 am-1:29 pm

1 stop9h 19m

Boise Air Term. Gowen Fld

Sat 9/26

5:30 am-1:31 pm

1 stop6h 01m

$323

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sun 9/6

6:00 am-1:42 pm

1 stop9h 42m

Boise Air Term. Gowen Fld

Sun 9/20

11:10 pm-9:09 am

1 stop7h 59m

$327

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Fri 12/11

7:05 am-3:30 pm

1 stop10h 25m

Boise Air Term. Gowen Fld

Mon 12/14

1:43 pm-12:20 am

1 stop8h 37m

$327

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 10/28

7:25 am-12:28 pm

1 stop7h 03m

Boise Air Term. Gowen Fld

Sun 11/1

8:22 am-7:53 pm

1 stop9h 31m

$327

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 9/24

5:57 pm-9:56 am

1 stop17h 59m

Boise Air Term. Gowen Fld

Mon 9/28

4:20 pm-5:40 am

1 stop11h 20m

$346

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 9/10

7:00 am-3:30 pm

1 stop10h 30m

Boise Air Term. Gowen Fld

Mon 9/14

5:52 pm-5:40 am

1 stop9h 48m

$346

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 8/25

5:47 pm-11:44 pm

1 stop7h 57m

Boise Air Term. Gowen Fld

Sat 8/29

2:17 pm-11:59 pm

1 stop7h 42m

$398

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 10/1

7:00 am-2:22 pm

1 stop9h 22m

Boise Air Term. Gowen Fld

Tue 10/6

7:20 am-5:50 pm

1 stop8h 30m

$402
Cheapest one-way

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 8/22

6:42 am-3:31 pm

1 stop10h 49m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 21 resultsSorted by cheapest first
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3

Compare providers for flights from Dulles Intl to Boise

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 Dulles Intl to Boise in July.
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 Washington, D.C. Dulles Intl Airport-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Boise 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 Washington, D.C. Dulles Intl Airport-Boise 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 Dulles Intl to Boise

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

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

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boise (average of $308). Flying from Washington, D.C. Dulles Intl Airport to Boise in March is currently the most expensive (average of $817). 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 Washington, D.C. Dulles Intl Airport to Boise?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Boise flights typically cost between $402 and $792 in September.
The cheapest round-trip price found within the last 5 days was $293 on Delta (Sep 29-Oct 5).

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated July 25, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,233 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,233 reviews
Southwest
8.0
Very good
4,233 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Delta
7.8
Good
8,485 reviews
Southwest
8.0
Very good
4,233 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
United Airlines
7.4
Good
10,035 reviews
Southwest
8.0
Very good
4,233 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Boise. 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 into for flights to Boise from Washington, D.C. Dulles Intl?

    Most people fly into Boise Air Term. Gowen Fld (BOI) if they book a flight to Boise from Washington, D.C. Dulles Intl. On average, Air Term. Gowen Fld has 0 inbound flights from Washington, D.C. Dulles Intl per day from 3 airlines. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to Boise can take about 9h 26m. Delta provides one of the quickest options available for as low as $317. There are 2019 mi between Washington, D.C. Dulles Intl Airport and Boise.

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

    Flying on Delta is currently your cheapest option to Boise, with prices starting at $208. Additional round-trip tickets that might be worth considering are offered by United Airlines and Southwest, with the lowest prices starting at $278 and $389, respectively. Users have found that Delta is 59% cheaper than the other options available to this destination.

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

    $121 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $121 and $160, respectively.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boise (average of $308). Flying from Washington, D.C. Dulles Intl Airport to Boise in March is currently the most expensive (average of $817). 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 Boise?

Book flights to Boise if you plan to visit one of these locations
Meridian
Nampa
Caldwell
Ontario

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Top 3 airlines flying from Dulles Intl to Boise

Discover the top 3 airlines that operate flights from Dulles Intl to Boise. 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 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$330FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$648FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$389Average$532FlexibilityNo cancel feeOn-time63%

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