HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boise

$113+ Cheap flights from Washington, D.C. (WAS) 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BOI
Mar 24 — Mar 311
Tue 3/24
Tue 3/31
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Boise with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Cheapest flights from Washington, D.C. to Boise
Explore the most affordable flight options available from Washington, D.C. to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2026.

This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:00 am
IAD
-
BOI
1 stop8h 12m
Delta
Sat 4/182:18 pm
BOI
-
IAD
1 stop8h 09m
Delta
Deal found 2/19$251
This Frontier deal was found by Cheapflights users on 2/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:00 pm
DCA
-
BOI
1 stop23h 11m
Frontier
Thu 3/512:38 pm
BOI
-
DCA
1 stop22h 24m
Frontier
Deal found 2/19$257
This American Airlines deal was found by Cheapflights users on 2/18. 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 4/155:55 am
DCA
-
BOI
1 stop8h 54m
American Airlines
Sat 4/181:29 pm
BOI
-
DCA
1 stop8h 28m
American Airlines
Deal found 2/18$263
This Delta deal was found by Cheapflights users on 2/21. 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 4/47:00 am
IAD
-
BOI
1 stop16h 01m
Delta
Tue 4/711:40 pm
BOI
-
IAD
1 stop7h 30m
Delta
Deal found 2/21$267
This Delta deal was found by Cheapflights users on 2/21. 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 3/187:01 am
BWI
-
BOI
2 stops13h 42m
Delta
Tue 3/245:52 am
BOI
-
BWI
2 stops10h 17m
Delta
Deal found 2/21$274
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
IAD
-
BOI
1 stop11h 14m
Delta
Thu 5/712:16 pm
BOI
-
IAD
1 stop9h 43m
Delta
Deal found 2/19$283
This Delta deal was found by Cheapflights users on 2/20. 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 4/294:39 pm
DCA
-
BOI
1 stop9h 38m
Delta
Sun 5/35:40 am
BOI
-
DCA
1 stop7h 47m
Delta
Deal found 2/20$283
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Wed 3/186:00 am
IAD
-
BOI
1 stop8h 48m
American Airlines
Tue 3/246:33 pm
BOI
-
IAD
2 stops12h 15m
American Airlines
Deal found 2/21$284
This Delta deal was found by Cheapflights users on 2/18. 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.
Fri 4/37:00 am
IAD
-
BOI
1 stop8h 05m
Delta
Tue 4/711:40 pm
BOI
-
IAD
1 stop7h 30m
Delta
Deal found 2/18$287
This Delta deal was found by Cheapflights users on 2/21. 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.
Tue 4/2810:11 am
BWI
-
BOI
2 stops11h 49m
Delta
Thu 5/76:00 pm
BOI
-
BWI
2 stops9h 45m
Delta
Deal found 2/21$295
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:11 pm
IAD
-
BOI
1 stop17h 10m
Alaska Airlines
Wed 4/226:00 am
BOI
-
IAD
1 stop16h 09m
Alaska Airlines
Deal found 2/21$303
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/184:10 pm
IAD
-
BOI
1 stop9h 47m
United Airlines
Thu 3/265:00 am
BOI
-
IAD
1 stop6h 05m
United Airlines
Deal found 2/19$307

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 February 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(Delta)

One-way from

$113
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$405
Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.
Search Deals
From Washington, D.C. (WAS) to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Washington, D.C. (WAS) to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($59 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 February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 February 22, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Boise that are best for you.

Fly from

Washington, D.C.

Fly to

Boise

Route

Depart

Return

Price

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 4/21

7:00 am-1:12 pm

1 stop8h 12m

Boise Air Term. Gowen Fld

Sat 4/25

3:23 pm-11:32 pm

1 stop6h 09m

$251

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 4/14

7:00 am-4:14 pm

1 stop11h 14m

Boise Air Term. Gowen Fld

Sat 4/18

1:52 pm-11:55 pm

1 stop8h 03m

$251

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 4/15

5:55 am-12:49 pm

1 stop8h 54m

Boise Air Term. Gowen Fld

Sat 4/18

1:29 pm-11:57 pm

1 stop8h 28m

$263

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 4/28

10:11 am-8:00 pm

2 stops11h 49m

Boise Air Term. Gowen Fld

Thu 5/7

6:08 pm-5:45 am

2 stops9h 37m

$274

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 3/18

7:01 am-6:43 pm

2 stops13h 42m

Boise Air Term. Gowen Fld

Tue 3/24

5:52 am-6:09 pm

2 stops10h 17m

$274

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 4/28

7:00 am-1:12 pm

1 stop8h 12m

Boise Air Term. Gowen Fld

Thu 5/7

12:15 pm-12:15 am

1 stop10h 00m

$283

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 4/29

4:39 pm-12:17 am

1 stop9h 38m

Boise Air Term. Gowen Fld

Sun 5/3

5:40 am-3:27 pm

1 stop7h 47m

$283

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Fri 4/3

7:00 am-1:05 pm

1 stop8h 05m

Boise Air Term. Gowen Fld

Tue 4/7

11:40 pm-9:10 am

1 stop7h 30m

$287

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 4/14

10:11 am-8:00 pm

2 stops11h 49m

Boise Air Term. Gowen Fld

Sun 4/19

3:44 pm-6:00 am

2 stops12h 16m

$295

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 3/18

4:10 pm-11:57 pm

1 stop9h 47m

Boise Air Term. Gowen Fld

Thu 3/26

5:00 am-1:05 pm

1 stop6h 05m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 55 results
1
2
3
...
6

Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Boise in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 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.-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.-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-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.-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 Washington, D.C. to Boise

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

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Boise. Price data was last updated on February 20, 2026.

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Boise. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Boise (average of $150). Flying from Washington, D.C. to Boise in February is currently the most expensive (average of $310). 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. 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 February 22, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Washington, D.C. to Boise 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
11,928 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Alaska Airlines
8.0
Very good
11,928 reviews
Alaska Airlines
8.0
Very good
11,928 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Southwest
8.0
Very good
4,299 reviews
Alaska Airlines
8.0
Very good
11,928 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Delta
7.9
Good
8,241 reviews
Alaska Airlines
8.0
Very good
11,928 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
United Airlines
7.4
Good
9,341 reviews
Alaska Airlines
8.0
Very good
11,928 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
American Airlines
7.2
Good
11,338 reviews
Alaska Airlines
8.0
Very good
11,928 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Related info for your journey

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

    Most people fly into Boise Air Term. Gowen Fld (BOI) if they book a flight to Boise from Washington, D.C.. On average, Air Term. Gowen Fld has 0 inbound flights from 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 Washington, D.C. to Boise?

    Airlines like Delta and American Airlines fly from Washington, D.C. to Boise in about 8h 12m. The time it takes to get you to your destination can typically vary by up to 42m. Washington, D.C. and Boise are separated by a distance of 2019 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 Washington, D.C. to Boise round-trip?

    Delta, at $150, was found to be the cheapest airline from Washington, D.C. to Boise.Alternate airlines to your destination round-trip include Alaska Airlines and United Airlines. Users have found that Delta is 64% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $111. Users have also found prices from $118 and $148 on United Airlines and American Airlines, respectively.

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

    Most travelers choose Washington, D.C. Dulles Intl - Boise Air Term. Gowen Fld, Baltimore/Washington - Boise Air Term. Gowen Fld or Washington, D.C. Reagan-National - Boise Air Term. Gowen Fld when deciding on the best route from Washington, D.C. to Boise.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Boise (average of $150). Flying from Washington, D.C. to Boise in February is currently the most expensive (average of $310). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Discover the top 5 airlines that operate flights from Washington, D.C. 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 February 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$150Average$355FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$182Average$395FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$221Average$515FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$300Average$437FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$342Average$494FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.