$85 Cheap Flights from Washington (DCA) to Boise (BOI)

View $85 flight on Sun, Feb 1, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI)

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Cheap Flights from Washington to Boise (DCA-BOI)

Prices were available within the past 7 days and start at $85 for one-way flights and $158 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Feb 25 - Fri, Feb 27
DCA
Washington
BOI
Boise
$158 Roundtrip, found 14 hours ago
$158
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Feb 25 from Washington to Boise, returning Fri, Feb 27, priced at $158 found 14 hours ago
Southwest Airlines
Tue, Jan 20 - Fri, Jan 23
DCA
Washington
BOI
Boise
$172 Roundtrip, found 6 days ago
$172
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Tue, Jan 20 from Washington to Boise, returning Fri, Jan 23, priced at $172 found 6 days ago
Frontier Airlines
Wed, Feb 25 - Thu, Mar 5
DCA
Washington
BOI
Boise
$175 Roundtrip, found 14 hours ago
$175
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Feb 25 from Washington to Boise, returning Thu, Mar 5, priced at $175 found 14 hours ago
Delta
Tue, Jan 20 - Fri, Jan 23
DCA
Washington
BOI
Boise
$178 Roundtrip, found 6 days ago
$178
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jan 20 from Washington to Boise, returning Fri, Jan 23, priced at $178 found 6 days ago
Alaska Airlines
Tue, Jan 20 - Fri, Jan 23
DCA
Washington
BOI
Boise
$185 Roundtrip, found 6 days ago
$185
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Washington to Boise, returning Fri, Jan 23, priced at $185 found 6 days ago
Southwest Airlines
Tue, Jan 20 - Fri, Jan 23
DCA
Washington
BOI
Boise
$192 Roundtrip, found 6 days ago
$192
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Tue, Jan 20 from Washington to Boise, returning Fri, Jan 23, priced at $192 found 6 days ago
Frontier Airlines
Thu, Feb 26 - Thu, Mar 5
DCA
Washington
BOI
Boise
$192 Roundtrip, found 14 hours ago
$192
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Thu, Feb 26 from Washington to Boise, returning Thu, Mar 5, priced at $192 found 14 hours ago
Frontier Airlines
Mon, Jan 19 - Fri, Jan 23
DCA
Washington
BOI
Boise
$194 Roundtrip, found 2 days ago
$194
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Jan 19 from Washington to Boise, returning Fri, Jan 23, priced at $194 found 2 days ago
Delta
Tue, Feb 3 - Tue, Feb 10
DCA
Washington
BOI
Boise
$197 Roundtrip, found 5 days ago
$197
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Feb 3 from Washington to Boise, returning Tue, Feb 10, priced at $197 found 5 days ago
United
Wed, Feb 11 - Fri, Feb 20
DCA
Washington
BOI
Boise
$206 Roundtrip, found 6 days ago
$206
Roundtrip
found 6 days ago
Select United flight, departing Wed, Feb 11 from Washington to Boise, returning Fri, Feb 20, priced at $206 found 6 days ago

Find the cheapest month to fly from Washington (DCA) to Boise (BOI)

September is typically the cheapest month to fly

From $219 - $609 per traveler.

Alternative airports near Boise

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $644
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $644
Flights from Washington (DCA) to Boise (BOI)
Origin airport
Ronald Reagan Washington National
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$158
Distance
2042 mi

Washington to Boise Flights

The cheapest times to fly from Washington to Boise

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Boise are during the month of February. You can find some of the cheapest flights from Washington to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Boise

Sunday is one of the best days to book for cheap flights from Washington to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Boise

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Boise in 2026. You can also book with separate airlines for your outbound and return journeys, from $85 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI) cost?
Secure a cheap one-way flight from $85 or cheap return flight from $158 from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI)?
Traveling in February may help you find better deals, as it's the cheapest month for flights between DCA and BOI. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from DCA to BOI. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI)?
You'll have to book a flight with a layover when traveling from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from DCA to BOI?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI)?
To reach Boise Airport (BOI) on time, select a flight that leaves from Ronald Reagan Washington National Airport (DCA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI) last-minute?
Last-minute fares from DCA to BOI are typically more expensive. To lock in the best rates, start searching for flights well in advance. That said, if you can play around with your travel dates, you may find a cheap ticket just before your departure.
Is it cheaper to book a DCA to BOI flight and hotel package?
Compared with arranging hotels and flights separately, booking a DCA to BOI flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Boise Airport (BOI)?
If you booked your DCA to BOI flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.