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$93+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Southwest deal was found by Cheapflights users on 12/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:50 pmIAD - BOI
1 stop6h 50mSouthwest
Tue 1/66:40 amBOI - IAD
1 stop8h 10mSouthwest
Deal found 12/2$445
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:15 amIAD - BOI
1 stop10h 47mDelta
Sun 12/2111:51 pmBOI - IAD
1 stop7h 55mDelta
Deal found 12/3$473
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:58 pmIAD - BOI
2 stops12h 55mDelta
Mon 1/510:39 amBOI - IAD
1 stop10h 31mDelta
Deal found 12/3$520
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:56 pmIAD - BOI
1 stop7h 13mDelta
Mon 1/510:39 amBOI - IAD
1 stop10h 31mDelta
Deal found 12/3$535
This United Airlines deal was found by Cheapflights users on 12/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:00 pmIAD - BOI
1 stop8h 40mUnited Airlines
Mon 1/56:55 pmBOI - IAD
1 stop8h 27mUnited Airlines
Deal found 12/2$552
This Southwest deal was found by Cheapflights users on 12/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:40 amIAD - BOI
1 stop9h 25mSouthwest
Wed 12/315:15 amBOI - IAD
1 stop8h 30mSouthwest
Deal found 12/2$554
This Southwest deal was found by Cheapflights users on 12/3. 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.
Wed 12/177:40 amIAD - BOI
2 stops11h 30mSouthwest
Sun 12/215:35 amBOI - IAD
1 stop9h 30mSouthwest
Deal found 12/3$558
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Wed 12/246:29 pmIAD - BOI
1 stop21h 48mAlaska Airlines
Mon 1/56:00 pmBOI - IAD
1 stop10h 13mAlaska Airlines
Deal found 12/3$579
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/244:00 pmIAD - BOI
1 stop7h 31mUnited Airlines
Wed 12/312:40 pmBOI - IAD
1 stop6h 43mUnited Airlines
Deal found 12/3$583
This Southwest deal was found by Cheapflights users on 12/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:05 amIAD - BOI
1 stop6h 55mSouthwest
Mon 1/55:30 amBOI - IAD
2 stops11h 35mSouthwest
Deal found 12/2$591

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$212
(Southwest)

One-way from

$93
(American Airlines)

Popular in

December

Cheapest in

May

Average price

$766
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Boise Air Term. Gowen Fld flights.
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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. 35% potential increase in price ($267 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 4, 2025.
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

Dulles Intl

Fly to

Boise

Route

Depart

Return

Price

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 2/19

7:05 am-10:40 pm

1 stop17h 35m

Boise Air Term. Gowen Fld

Mon 2/23

8:27 pm-5:20 pm

1 stop18h 53m

$226

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 1/8

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Mon 1/12

10:39 am-11:10 pm

1 stop10h 31m

$227

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 2/14

12:38 pm-9:56 pm

2 stops11h 18m

Boise Air Term. Gowen Fld

Thu 2/19

10:41 am-11:10 pm

1 stop10h 29m

$232

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 1/8

6:04 pm-11:01 pm

1 stop30h 57m

Boise Air Term. Gowen Fld

Mon 1/12

10:00 am-4:26 pm

1 stop28h 26m

$246

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:00 am-4:17 pm

2 stops11h 17m

Boise Air Term. Gowen Fld

Sun 2/15

10:41 am-11:10 pm

1 stop10h 29m

$278

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 2/21

7:30 am-4:15 pm

1 stop10h 45m

Boise Air Term. Gowen Fld

Sun 3/1

1:51 pm-11:10 pm

1 stop7h 19m

$291

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:00 am-1:34 pm

1 stop8h 34m

Boise Air Term. Gowen Fld

Mon 2/16

1:51 pm-11:10 pm

1 stop7h 19m

$294

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sun 2/22

7:30 am-4:15 pm

1 stop10h 45m

Boise Air Term. Gowen Fld

Wed 2/25

1:38 pm-12:24 am

1 stop8h 46m

$297

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 1/21

6:00 am-1:08 pm

1 stop9h 08m

$93

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:30 am-4:17 pm

1 stop10h 47m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 14 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Boise flight deals on Cheapflights vs. eDreams >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 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 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boise (average of $203). Flying from Washington, D.C. Dulles Intl Airport to Boise in January is currently the most expensive (average of $641). 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 IAD to BOI?

Find hourly flight availability from Dulles Intl to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Boise at noon. If you’re flexible enough to do this you can expect to save up to 35% on your trip compared to booking a flight in the evening.

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

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 December 4, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
11,400 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Alaska Airlines
8.0
Very good
11,400 reviews
Alaska Airlines
8.0
Very good
11,400 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Southwest
8.0
Very good
4,254 reviews
Alaska Airlines
8.0
Very good
11,400 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,400 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
United Airlines
7.4
Good
9,066 reviews
Alaska Airlines
8.0
Very good
11,400 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

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 4 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 10h 47m. Alaska Airlines provides one of the quickest options available for as low as $227. There are 2019 mi between Washington, D.C. Dulles Intl Airport and Boise. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Alaska Airlines is currently your cheapest option to Boise, with prices starting at $182. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $237 and $278, respectively. Users have found that Alaska Airlines is 62% cheaper than the other options available to this destination.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boise (average of $203). Flying from Washington, D.C. Dulles Intl Airport to Boise in January is currently the most expensive (average of $641). 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
Ontario
Meridian
Nampa
Caldwell
McCall

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Alternative routes for Dulles Intl to Boise

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Dulles Intl to Boise

Discover the top 4 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$182Average$456FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$342FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$497FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$429Average$504FlexibilityNo cancel feeOn-time63%

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