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Dulles Intl

$106+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$300
(Alaska Airlines)

One-way from

$106
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$409
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. Dulles Intl flights.
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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. 7% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/258:59 pmBOI - IAD
1 stop8h 44mAlaska Airlines
Mon 4/286:30 amIAD - BOI
1 stop7h 46mAlaska Airlines
Deal found 4/2$300
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Sun 4/277:00 pmBOI - IAD
1 stop10h 00mUnited Airlines
Wed 4/305:30 pmIAD - BOI
1 stop7h 33mUnited Airlines
Deal found 4/2$301
This Delta deal was found by Cheapflights users on 4/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2711:30 pmBOI - IAD
1 stop7h 48mDelta
Wed 4/306:00 amIAD - BOI
2 stops10h 35mDelta
Deal found 4/2$306
This Southwest deal was found by Cheapflights users on 4/2. 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 5/15:35 amBOI - IAD
2 stops10h 20mSouthwest
Sun 5/45:15 amIAD - BOI
2 stops9h 25mSouthwest
Deal found 4/2$508
This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2312:16 pmBOI - IAD
2 stops24h 23mMultiple Airlines
Sun 5/2512:49 pmIAD - BOI
2 stops29h 06mMultiple Airlines
Deal found 4/2$545
This American Airlines deal was found by Cheapflights users on 4/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/287:00 amBOI - IAD
2 stops10h 44mAmerican Airlines
Sun 7/66:27 amIAD - BOI
2 stops12h 20mAmerican Airlines
Deal found 4/3$557
This Hawaiian Airlines deal was found by Cheapflights users on 4/2. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/46:40 pmBOI - IAD
1 stop9h 00mHawaiian Airlines
Fri 4/257:00 amIAD - BOI
1 stop8h 31mHawaiian Airlines
Deal found 4/2$586

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 April 3, 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

Fri 4/25

3:30 pm-5:40 am

1 stop12h 10m

Washington, D.C. Dulles Intl

Wed 5/7

6:30 am-1:47 pm

1 stop9h 17m

$300

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sun 4/27

7:00 pm-7:00 am

1 stop10h 00m

Washington, D.C. Dulles Intl

Wed 4/30

5:30 pm-11:03 pm

1 stop7h 33m

$301

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sun 4/27

11:30 pm-9:18 am

1 stop7h 48m

Washington, D.C. Dulles Intl

Tue 4/29

6:00 am-5:03 pm

2 stops13h 03m

$306

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 5/1

5:35 am-5:55 pm

2 stops10h 20m

Washington, D.C. Dulles Intl

Sun 5/4

5:15 am-12:40 pm

2 stops9h 25m

$508

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 5/23

12:16 pm-2:39 pm

2 stops24h 23m

Washington, D.C. Dulles Intl

Sun 5/25

12:49 pm-3:55 pm

2 stops29h 06m

$545

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 6/28

7:00 am-7:44 pm

2 stops10h 44m

Washington, D.C. Dulles Intl

Sun 7/6

6:27 am-4:47 pm

2 stops12h 20m

$557

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 5/26

7:06 pm-7:36 am

1 stop10h 30m

Washington, D.C. Dulles Intl

Fri 6/13

8:10 am-5:04 pm

1 stop10h 54m

$602

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 4/30

2:41 pm-11:58 pm

1 stop7h 17m

$106

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 4/29

1:00 pm-11:58 pm

1 stop8h 58m

$150

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 4/29

8:00 pm-8:31 am

2 stops10h 31m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 14 results
1
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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, 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 June is currently the most expensive (average of $383). 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 April 3, 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.

What is the cheapest day to fly from Boise to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Boise to Dulles Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boise to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 April 3, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Boise to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,825 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,274 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,619 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $300. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $301 and $306, 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 Alaska Airlines, with whom users have recently found tickets for as low as $106. However, be on the lookout for offers from Delta and Hawaiian Airlines, 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 June is currently the most expensive (average of $383). 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.

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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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$192Average$501FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$300Average$501FlexibilityNo cancel feeOn-time69%
DeltaCheapest$316Average$518FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$346Average$438FlexibilityNo cancel feeOn-time63%

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