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$125+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BOI
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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1. Tell us where you want to go

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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 April 10, 2026.

This Frontier deal was found by Cheapflights users on 4/8. 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.
Sun 5/247:00 am
DCA
-
BOI
1 stop7h 30m
Frontier
Sun 5/311:25 pm
BOI
-
DCA
1 stop21h 34m
Frontier
Deal found 4/8$192
This Expedia deal was found by Cheapflights users on 4/6. 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 5/77:00 am
DCA
-
BOI
1 stop7h 27m
Frontier
Sun 5/101:22 pm
BOI
-
DCA
1 stop21h 37m
Frontier
Deal found 4/6$250
This Southwest deal was found by Cheapflights users on 4/7. 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 4/284:30 pm
IAD
-
BOI
1 stop7h 40m
Southwest
Sat 5/22:50 pm
BOI
-
IAD
1 stop6h 05m
Southwest
Deal found 4/7$263
This Southwest deal was found by Cheapflights users on 4/7. 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 4/289:05 am
BWI
-
BOI
1 stop8h 20m
Southwest
Tue 5/52:00 pm
BOI
-
BWI
1 stop8h 25m
Southwest
Deal found 4/7$263
This Delta deal was found by Cheapflights users on 4/5. 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 4/287:59 am
DCA
-
BOI
1 stop7h 08m
Delta
Sat 5/23:23 pm
BOI
-
DCA
1 stop6h 21m
Delta
Deal found 4/5$263
This Delta deal was found by Cheapflights users on 4/9. 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 5/56:00 am
IAD
-
BOI
2 stops10h 26m
Delta
Sat 5/1612:15 pm
BOI
-
IAD
1 stop10h 00m
Delta
Deal found 4/9$268
This Southwest deal was found by Cheapflights users on 4/9. 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 5/307:25 am
BWI
-
BOI
1 stop8h 45m
Southwest
Tue 6/25:00 pm
BOI
-
BWI
2 stops10h 30m
Southwest
Deal found 4/9$268
This Delta deal was found by Cheapflights users on 4/8. 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 5/272:45 pm
DCA
-
BOI
2 stops11h 01m
Delta
Thu 5/285:45 am
BOI
-
DCA
1 stop7h 45m
Delta
Deal found 4/8$268
This Expedia deal was found by Cheapflights users on 4/9. 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.
Tue 5/267:00 am
DCA
-
BOI
1 stop7h 30m
Frontier
Thu 5/281:25 pm
BOI
-
DCA
1 stop21h 34m
Frontier
Deal found 4/9$270
This Delta deal was found by Cheapflights users on 4/8. 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 4/297:00 am
IAD
-
BOI
1 stop8h 12m
Delta
Tue 5/511:35 pm
BOI
-
IAD
1 stop7h 40m
Delta
Deal found 4/8$271
This Delta deal was found by Cheapflights users on 4/8. 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
Tue 5/511:35 pm
BOI
-
DCA
1 stop9h 50m
Delta
Deal found 4/8$271
This Delta deal was found by Cheapflights users on 4/9. 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 7/76:00 am
IAD
-
BOI
2 stops8h 13m
Delta
Tue 7/145:20 am
BOI
-
IAD
2 stops11h 06m
Delta
Deal found 4/9$273

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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$192
(Frontier)

One-way from

$125
(Frontier)

Popular in

December

Cheapest in

April

Average price

$245
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 ($58 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 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 April 10, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 6/3

7:00 am-2:41 pm

1 stop9h 41m

Boise Air Term. Gowen Fld

Mon 6/8

11:45 pm-9:21 am

1 stop7h 36m

$263

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 6/3

6:25 pm-12:25 am

1 stop8h 00m

Boise Air Term. Gowen Fld

Mon 6/8

12:05 pm-12:05 am

1 stop10h 00m

$263

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 7/14

7:12 am-12:13 pm

1 stop7h 01m

Boise Air Term. Gowen Fld

Mon 7/20

11:42 pm-9:24 am

1 stop7h 42m

$263

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 5/9

6:05 am-2:43 pm

2 stops10h 38m

Boise Air Term. Gowen Fld

Wed 5/13

5:45 am-3:30 pm

1 stop7h 45m

$268

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Tue 4/28

7:55 am-3:25 pm

2 stops9h 30m

Boise Air Term. Gowen Fld

Sat 5/2

7:35 am-8:45 pm

2 stops11h 10m

$273

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 5/6

3:00 pm-10:28 pm

1 stop9h 28m

Boise Air Term. Gowen Fld

Sat 5/9

2:23 pm-11:38 pm

1 stop7h 15m

$283

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 4/28

6:00 am-1:07 pm

1 stop9h 07m

Boise Air Term. Gowen Fld

Mon 5/4

3:23 pm-11:26 pm

1 stop6h 03m

$283

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 5/9

4:12 pm-10:35 pm

1 stop8h 23m

Boise Air Term. Gowen Fld

Wed 5/13

6:58 pm-7:20 am

1 stop10h 22m

$301

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sun 5/3

5:50 am-10:25 am

1 stop6h 35m

Boise Air Term. Gowen Fld

Sat 5/9

7:05 am-10:55 pm

2 stops13h 50m

$302

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Tue 5/5

8:00 am-3:33 pm

1 stop9h 33m

Boise Air Term. Gowen Fld

Wed 5/6

7:43 am-9:00 pm

1 stop11h 17m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 57 resultsSorted by cheapest first
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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 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 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 April 3, 2026.

Booking 89 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 November is currently the most expensive (average of $301). 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 April 10, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta 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.
Southwest
8.0
Very good
4,334 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

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
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

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
12,207 reviews
Southwest
8.0
Very good
4,334 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

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
8,400 reviews
Southwest
8.0
Very good
4,334 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

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
9,562 reviews
Southwest
8.0
Very good
4,334 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

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.
American Airlines
7.1
Good
11,564 reviews
Southwest
8.0
Very good
4,334 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

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 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, Southwest, and United Airlines fly from Washington, D.C. to Boise in about 8h. The time it takes to get you to your destination can typically vary by up to 1h 41m. Washington, D.C. and Boise are separated by a distance of 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 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 $145 and $150 on Delta and United 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 November is currently the most expensive (average of $301). 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

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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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$150Average$367FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$182Average$466FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$221Average$561FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$256Average$480FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$300Average$437FlexibilityNo cancel feeOn-time71%

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