Boise

$122+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BOI
Jul 7 — Jul 141
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.

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 July 2, 2025.

Round-trip from

$245
(Cheapflightsfares)

One-way from

$122
(FlightHub)

Popular in

December

Cheapest in

April

Average price

$458
From Washington, D.C. (WAS) to Boise Air Term. Gowen Fld
One-way flight from Washington, D.C. (WAS) to Boise Air Term. Gowen Fld
Highest demand for flights based on searches. 19% potential increase in price ($103 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 July 2, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:30 amBWI - BOI
1 stop12h 41mSpirit Airlines
Thu 8/216:06 pmBOI - BWI
1 stop9h 09mSpirit Airlines
Deal found 6/30$245
This Hawaiian Airlines deal was found by Cheapflights users on 7/1. 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 8/277:00 amIAD - BOI
1 stop10h 54mHawaiian Airlines
Tue 9/22:28 pmBOI - IAD
1 stop7h 55mHawaiian Airlines
Deal found 7/1$284
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/296:35 amIAD - BOI
1 stop7h 08mUnited Airlines
Tue 8/510:50 amBOI - IAD
1 stop8h 29mUnited Airlines
Deal found 6/30$285
This Delta deal was found by Cheapflights users on 6/30. 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 9/206:55 pmDCA - BOI
1 stop7h 04mDelta
Sat 9/273:20 pmBOI - DCA
1 stop6h 19mDelta
Deal found 6/30$285
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/294:20 pmBWI - BOI
1 stop7h 14mUnited Airlines
Tue 8/57:15 pmBOI - BWI
1 stop8h 13mUnited Airlines
Deal found 6/30$287
This Delta deal was found by Cheapflights users on 7/1. 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 8/237:30 amIAD - BOI
1 stop6h 25mDelta
Tue 8/2610:45 amBOI - IAD
2 stops10h 55mDelta
Deal found 7/1$290
This Southwest deal was found by Cheapflights users on 6/30. 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.
Sat 9/206:00 amDCA - BOI
2 stops10h 50mSouthwest
Sat 9/276:00 amBOI - DCA
1 stop7h 35mSouthwest
Deal found 6/30$290
This Expedia deal was found by Cheapflights users on 7/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:00 amDCA - BOI
1 stop6h 40mFrontier
Sun 9/712:25 pmBOI - DCA
1 stop7h 34mFrontier
Deal found 7/2$299
This Booking.com deal was found by Cheapflights users on 6/30. 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.
Sat 9/66:25 amBWI - BOI
2 stops31h 15mFrontier
Sun 9/1412:25 pmBOI - BWI
1 stop27h 17mFrontier
Deal found 6/30$305
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 9/186:09 pmIAD - BOI
1 stop7h 59mAlaska Airlines
Sat 9/272:28 pmBOI - IAD
1 stop7h 55mAlaska Airlines
Deal found 6/30$308
This Hawaiian Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 8/257:00 amBWI - BOI
1 stop10h 00mHawaiian Airlines
Tue 8/267:17 pmBOI - BWI
1 stop8h 16mHawaiian Airlines
Deal found 7/1$309
This American Airlines deal was found by Cheapflights users on 6/30. 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 9/186:30 amDCA - BOI
1 stop7h 57mAmerican Airlines
Sat 9/271:07 pmBOI - DCA
1 stop6h 53mAmerican Airlines
Deal found 6/30$309

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 July 2, 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

Mon 8/18

6:30 am-5:11 pm

1 stop12h 41m

Boise Air Term. Gowen Fld

Thu 8/21

6:06 pm-5:15 am

1 stop9h 09m

$245

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 8/27

7:00 am-3:54 pm

1 stop10h 54m

Boise Air Term. Gowen Fld

Tue 9/2

2:28 pm-12:23 am

1 stop7h 55m

$284

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 7/29

6:35 am-11:43 am

1 stop7h 08m

Boise Air Term. Gowen Fld

Tue 8/5

10:50 am-9:19 pm

1 stop8h 29m

$285

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 9/20

6:55 pm-11:59 pm

1 stop7h 04m

Boise Air Term. Gowen Fld

Sat 9/27

3:20 pm-11:39 pm

1 stop6h 19m

$285

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 7/29

4:20 pm-9:34 pm

1 stop7h 14m

Boise Air Term. Gowen Fld

Tue 8/5

7:15 pm-5:28 am

1 stop8h 13m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 8/23

7:30 am-11:55 am

1 stop6h 25m

Boise Air Term. Gowen Fld

Tue 8/26

10:45 am-11:40 pm

2 stops10h 55m

$290

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 9/4

7:00 am-11:40 am

1 stop6h 40m

Boise Air Term. Gowen Fld

Sun 9/7

12:25 pm-9:59 pm

1 stop7h 34m

$299

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 9/6

6:25 am-11:40 am

2 stops31h 15m

Boise Air Term. Gowen Fld

Sun 9/14

12:25 pm-5:42 pm

1 stop27h 17m

$305

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 9/18

6:09 pm-12:08 am

1 stop7h 59m

Boise Air Term. Gowen Fld

Sat 9/27

2:28 pm-12:23 am

1 stop7h 55m

$308

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 9/18

6:30 am-12:27 pm

1 stop7h 57m

Boise Air Term. Gowen Fld

Sat 9/27

1:07 pm-10:00 pm

1 stop6h 53m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 49 results
1
2
3
...
5

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 June 27, 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 July 2, 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.

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 July 2, 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.

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Spirit Airlines, at $245, was found to be the cheapest airline from Washington, D.C. to Boise.Alternate airlines to your destination round-trip include Hawaiian Airlines and United Airlines. Users have found that Spirit Airlines is 43% 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 Spirit Airlines. According to our data, you can fly for as low as $122. Users have also found prices from $143 and $148 on American Airlines and Delta, respectively.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Meridian
Nampa
McCall
Ontario
Caldwell

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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$230Average$511FlexibilityNo cancel feeOn-time75%
DeltaCheapest$230Average$417FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$254Average$479FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$278Average$539FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$537FlexibilityNo 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.