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$146+ 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BOI
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Boise Air Term. Gowen Fld are usually found in April or May, booked 75 days in advance, depart on a Wednesday or Saturday and return on a Saturday

Cheap 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 September 16, 2025.

Round-trip from

$189
(Booking.com)

One-way from

$146
(KAYAK)

Popular in

December

Cheapest in

April

Average price

$453
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
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Highest demand for flights based on searches. 18% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 16, 2025.

This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:00 amDCA - BOI
1 stop6h 43mFrontier
Sun 10/2612:28 pmBOI - DCA
1 stop21h 36mFrontier
Deal found 9/16$189
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/157:00 amDCA - BOI
1 stop30h 43mMultiple Airlines
Mon 10/2010:34 pmBOI - DCA
2 stops16h 25mMultiple Airlines
Deal found 9/15$282
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/77:00 amIAD - BOI
1 stop8h 30mUnited Airlines
Tue 10/147:05 pmBOI - IAD
1 stop8h 31mUnited Airlines
Deal found 9/14$297
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/47:00 amDCA - BOI
1 stop8h 46mAmerican Airlines
Sat 11/82:16 pmBOI - DCA
1 stop14h 44mAmerican Airlines
Deal found 9/15$303
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/157:38 amBWI - BOI
1 stop10h 39mAlaska Airlines
Mon 11/244:38 pmBOI - BWI
1 stop11h 01mAlaska Airlines
Deal found 9/15$306
This Hawaiian Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/156:25 amIAD - BOI
1 stop10h 11mHawaiian Airlines
Mon 10/208:26 pmBOI - IAD
1 stop9h 07mHawaiian Airlines
Deal found 9/16$308
This Delta deal was found by Cheapflights users on 9/15. 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 10/157:35 amIAD - BOI
1 stop10h 31mDelta
Mon 10/202:00 pmBOI - IAD
1 stop8h 40mDelta
Deal found 9/15$309
This Delta deal was found by Cheapflights users on 9/15. 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 10/154:59 pmDCA - BOI
1 stop9h 09mDelta
Sat 10/181:39 pmBOI - DCA
1 stop8h 02mDelta
Deal found 9/15$309
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/158:15 amBWI - BOI
1 stop7h 10mUnited Airlines
Mon 11/247:00 pmBOI - BWI
2 stops10h 56mUnited Airlines
Deal found 9/15$312
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Thu 12/46:00 amBWI - BOI
1 stop9h 06mAmerican Airlines
Sat 1/101:43 pmBOI - BWI
1 stop6h 40mAmerican Airlines
Deal found 9/13$314
This Southwest deal was found by Cheapflights users on 9/15. 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 11/44:35 pmDCA - BOI
1 stop7h 50mSouthwest
Sat 11/86:00 amBOI - DCA
2 stops12h 15mSouthwest
Deal found 9/15$314
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Thu 12/46:00 amDCA - BOI
1 stop9h 06mAmerican Airlines
Sat 1/102:24 pmBOI - DCA
1 stop14h 37mAmerican Airlines
Deal found 9/13$315

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 September 16, 2025.
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

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 11/15

7:38 am-4:17 pm

1 stop10h 39m

Boise Air Term. Gowen Fld

Mon 11/24

4:38 pm-5:39 am

1 stop11h 01m

$306

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 10/15

6:25 am-2:36 pm

1 stop10h 11m

Boise Air Term. Gowen Fld

Mon 10/20

8:26 pm-7:33 am

1 stop9h 07m

$308

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Tue 11/4

1:44 pm-10:32 pm

2 stops10h 48m

Boise Air Term. Gowen Fld

Sat 11/8

2:16 pm-7:00 am

1 stop14h 44m

$308

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 10/15

4:59 pm-12:08 am

1 stop9h 09m

Boise Air Term. Gowen Fld

Sat 10/18

1:39 pm-11:41 pm

1 stop8h 02m

$309

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Tue 11/4

6:30 am-11:39 am

1 stop7h 09m

Boise Air Term. Gowen Fld

Sat 11/8

10:40 am-9:43 pm

1 stop9h 03m

$309

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 10/15

4:59 pm-12:08 am

1 stop9h 09m

Boise Air Term. Gowen Fld

Thu 10/16

5:25 am-3:28 pm

1 stop8h 03m

$309

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 2/20

6:10 am-3:45 pm

1 stop11h 35m

Boise Air Term. Gowen Fld

Tue 2/24

7:45 am-5:15 pm

2 stops7h 30m

$312

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Thu 10/16

6:45 am-1:43 pm

1 stop8h 58m

Boise Air Term. Gowen Fld

Wed 10/22

2:39 pm-11:18 pm

1 stop6h 39m

$314

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 2/20

6:10 am-3:45 pm

1 stop11h 35m

Boise Air Term. Gowen Fld

Mon 2/23

12:30 pm-11:30 pm

1 stop9h 00m

$314

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 10/15

7:35 am-4:06 pm

1 stop10h 31m

Boise Air Term. Gowen Fld

Mon 10/20

7:45 pm-9:00 am

2 stops11h 15m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results
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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 September 12, 2025.

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, October is the cheapest month in which you can book a flight from Washington, D.C. to Boise (average of $314). Flying from Washington, D.C. to Boise in June is currently the most expensive (average of $398). 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 WAS to BOI?

Find hourly flight availability from Washington, D.C. 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 September 16, 2025.

It’s typically best to fly out from Washington, D.C. to Boise at noon. Doing so could potentially save you 30% on the flight price compared to flying in the evening, which is usually more expensive.

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 September 16, 2025.
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
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,957 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,924 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 Alaska Airlines, Hawaiian Airlines, and American Airlines fly from Washington, D.C. to Boise in about 10h 11m. The time it takes to get you to your destination can typically vary by up to 37m. 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 $202, 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 54% 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 United Airlines. According to our data, you can fly for as low as $149. Users have also found prices from $161 and $161 on Southwest and Frontier, 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Boise (average of $314). Flying from Washington, D.C. to Boise in June is currently the most expensive (average of $398). 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?

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Ontario
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Nampa
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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$202Average$417FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$230Average$527FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$278Average$557FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$327Average$536FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$347Average$512FlexibilityNo cancel feeOn-time63%

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