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Washington, D.C.

$89+ Cheap flights from Boise (BOI) to Washington, D.C. (WAS)

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — WAS
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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Cheap flight deals from Boise to Washington, D.C.

Cheapest flights from Boise to Washington, D.C.
Explore the most affordable flight options available from Boise to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.

This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:18 pm
BOI
-
DCA
1 stop8h 41m
American Airlines
Tue 9/296:30 am
DCA
-
BOI
1 stop8h 01m
American Airlines
Deal found 4/20$177
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Sat 9/191:18 pm
BOI
-
DCA
1 stop8h 41m
American Airlines
Tue 9/226:30 am
DCA
-
BOI
1 stop8h 01m
American Airlines
Deal found 4/21$193
This Delta deal was found by Cheapflights users on 4/20. 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.
Wed 5/2712:15 pm
BOI
-
IAD
1 stop10h 00m
Delta
Tue 6/27:00 am
IAD
-
BOI
1 stop9h 41m
Delta
Deal found 4/20$197
This Delta deal was found by Cheapflights users on 4/23. 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.
Tue 9/226:00 am
BOI
-
DCA
1 stop7h 40m
Delta
Tue 9/295:00 pm
DCA
-
BOI
1 stop8h 56m
Delta
Deal found 4/23$197
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:43 pm
BOI
-
IAD
1 stop8h 27m
Delta
Tue 9/227:10 am
IAD
-
BOI
1 stop10h 28m
Delta
Deal found 4/21$203
This Delta deal was found by Cheapflights users on 4/23. 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 5/281:53 pm
BOI
-
DCA
1 stop7h 51m
Delta
Tue 6/25:59 pm
DCA
-
BOI
1 stop8h 05m
Delta
Deal found 4/23$203
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:40 am
BOI
-
BWI
1 stop6h 15m
Delta
Tue 9/227:10 am
BWI
-
BOI
1 stop7h 04m
Delta
Deal found 4/21$203
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:40 am
BOI
-
DCA
1 stop6h 17m
Delta
Tue 9/223:05 pm
DCA
-
BOI
2 stops10h 51m
Delta
Deal found 4/21$208
This Delta deal was found by Cheapflights users on 4/20. 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.
Wed 8/1211:35 am
BOI
-
BWI
2 stops10h 41m
Delta
Mon 8/177:10 am
BWI
-
BOI
1 stop9h 24m
Delta
Deal found 4/20$208
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:35 am
BOI
-
IAD
2 stops10h 35m
Delta
Mon 8/176:00 am
IAD
-
BOI
2 stops10h 34m
Delta
Deal found 4/21$214
This deal was found by Cheapflights users on 4/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/41:25 pm
BOI
-
DCA
1 stop6h 33m
Frontier
Sun 6/77:00 am
DCA
-
BOI
1 stop7h 30m
Frontier
Deal found 4/19$220
This Expedia deal was found by Cheapflights users on 4/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:25 pm
BOI
-
DCA
1 stop6h 33m
Frontier
Sun 5/247:00 am
DCA
-
BOI
1 stop7h 30m
Frontier
Deal found 4/19$225

Find flight deals from Boise to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Washington, D.C. (WAS). 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 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(American Airlines)

One-way from

$89
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$354
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flights.
Search Deals
From Boise Air Term. Gowen Fld to Washington, D.C. (WAS)
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Washington, D.C. 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 24, 2026.
Use the filters below to find and compare flights from Boise to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Sat 9/19

5:40 am-1:55 pm

1 stop6h 15m

Baltimore/Washington

Tue 9/22

6:19 am-2:03 pm

1 stop9h 44m

$203

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 5/27

9:16 pm-11:18 am

2 stops12h 02m

Washington, D.C. Dulles Intl

Mon 6/1

6:08 am-12:43 pm

1 stop8h 35m

$208

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 8/12

11:35 am-12:16 am

2 stops10h 41m

Baltimore/Washington

Mon 8/17

7:10 am-2:34 pm

1 stop9h 24m

$208

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 5/27

9:16 pm-11:05 am

2 stops11h 49m

Baltimore/Washington

Mon 6/1

6:00 am-12:43 pm

1 stop8h 43m

$241

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 5/27

9:16 pm-11:05 am

2 stops11h 49m

Baltimore/Washington

Tue 6/2

6:10 am-1:18 pm

2 stops9h 08m

$260

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 5/16

12:15 pm-12:15 am

1 stop10h 00m

Washington, D.C. Dulles Intl

Fri 5/29

8:05 am-5:50 pm

2 stops11h 45m

$268

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 8/12

1:15 pm-12:10 am

2 stops8h 55m

Washington, D.C. Dulles Intl

Mon 8/17

7:10 am-3:38 pm

1 stop10h 28m

$303

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 6/2

6:12 pm-5:42 pm

1 stop21h 30m

Washington, D.C. Dulles Intl

Wed 6/10

6:03 am-12:47 pm

1 stop8h 44m

$355

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Tue 5/12

11:39 pm-10:44 am

1 stop9h 05m

Baltimore/Washington

Sat 5/16

6:10 am-5:09 pm

2 stops12h 59m

$372

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Tue 6/9

5:30 am-6:55 pm

2 stops11h 25m

Baltimore/Washington

Mon 6/15

7:30 pm-1:05 am

1 stop7h 35m

$388

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 56 resultsSorted by cheapest first
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Compare providers for flights from Boise to Washington, D.C.

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 Washington, D.C. in April.
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. 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. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Washington, D.C. 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. 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 Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

How far ahead should I book a flight from Boise to Washington, D.C.?

The best time to book flights from Boise to Washington, D.C. is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, May is the cheapest month in which you can book a flight from Boise to Washington, D.C. (average of $105). Flying from Boise to Washington, D.C. in July is currently the most expensive (average of $300). 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.?

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated April 24, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Boise to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,331 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,331 reviews
Southwest
8.0
Very good
4,331 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,274 reviews
Southwest
8.0
Very good
4,331 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,442 reviews
Southwest
8.0
Very good
4,331 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,640 reviews
Southwest
8.0
Very good
4,331 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,980 reviews
Southwest
8.0
Very good
4,331 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

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

    Most people fly from Boise Air Term. Gowen Fld (BOI) if they book a flight from Boise to Washington, D.C.. On average, Air Term. Gowen Fld has 0 outbound flights to Washington, D.C. per day from 5 airlines. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

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

    For as low as $203, Delta can have you in Washington, D.C. from Boise in 6h 15m. The distance between Boise and Washington, D.C. is about 2052 mi. 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 Boise to Washington, D.C. round-trip?

    According to our current data, Delta ($232), Alaska Airlines ($245), and American Airlines ($300) offers the cheapest pricing from Boise to Washington, D.C.. You may be able to fly from Boise to Washington, D.C. for 40% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $90. Delta flights start at $125 while deals on American Airlines start at $185 one-way.

  • What are the most popular routes from Boise to Washington, D.C.?

    While some choose either Boise Air Term. Gowen Fld - Baltimore/Washington or Boise Air Term. Gowen Fld - Washington, D.C. Reagan-National, Boise Air Term. Gowen Fld - Washington, D.C. Dulles Intl is the most popular route from Boise to Washington, D.C..

  • Can I find deals for flights from Boise to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Boise to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Washington, D.C.?

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

  • Can I find deals for business class flights from Boise to Washington, D.C.?

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

    Currently, May is the cheapest month in which you can book a flight from Boise to Washington, D.C. (average of $105). Flying from Boise to Washington, D.C. in July is currently the most expensive (average of $300). 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.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Woodbridge
Silver Spring
Herndon
Rockville
Hyattsville
Fredericksburg
Hanover
Laurel
Manassas
Largo
Upper Marlboro
Waldorf
Bowie
Clinton
Hunt Valley

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Boise to Washington, D.C.

Discover the top 5 airlines that operate flights from Boise to Washington, D.C.. 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$222Average$419FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$245Average$428FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$283Average$521FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$300Average$491FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$336Average$496FlexibilityNo cancel feeOn-time63%

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