$142 Cheap Flights from Washington (DCA) to Boise (BOI)

View $142 flight on Wed, Jan 14, 2026Opens in a new window

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

Cheap Flights from Washington to Boise (DCA-BOI)

Prices were available within the past 7 days and start at $142 for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Dec 4 - Thu, Dec 11
DCA
Washington
BOI
Boise
$140 Roundtrip, found 1 hour ago
$140
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Washington to Boise, returning Thu, Dec 11, priced at $140 found 1 hour ago
Frontier Airlines
Thu, Dec 4 - Sun, Dec 7
DCA
Washington
BOI
Boise
$144 Roundtrip, found 1 hour ago
$144
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Washington to Boise, returning Sun, Dec 7, priced at $144 found 1 hour ago
Frontier Airlines
Sun, Jan 18 - Sun, Feb 1
DCA
Washington
BOI
Boise
$148 Roundtrip, found 14 hours ago
$148
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Sun, Jan 18 from Washington to Boise, returning Sun, Feb 1, priced at $148 found 14 hours ago
Frontier Airlines
Sun, Jan 18 - Thu, Feb 5
DCA
Washington
BOI
Boise
$152 Roundtrip, found 14 hours ago
$152
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Sun, Jan 18 from Washington to Boise, returning Thu, Feb 5, priced at $152 found 14 hours ago
Frontier Airlines
Wed, Dec 3 - Thu, Dec 11
DCA
Washington
BOI
Boise
$186 Roundtrip, found 1 hour ago
$186
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Dec 3 from Washington to Boise, returning Thu, Dec 11, priced at $186 found 1 hour ago
Frontier Airlines
Wed, Dec 3 - Fri, Dec 5
DCA
Washington
BOI
Boise
$190 Roundtrip, found 1 hour ago
$190
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Dec 3 from Washington to Boise, returning Fri, Dec 5, priced at $190 found 1 hour ago
Alaska Airlines
Sat, Dec 6 - Fri, Dec 12
DCA
Washington
BOI
Boise
$234 Roundtrip, found 8 hours ago
$234
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Washington to Boise, returning Fri, Dec 12, priced at $234 found 8 hours ago
Hawaiian Airlines
Thu, Dec 4 - Sat, Dec 6
DCA
Washington
BOI
Boise
$287 Roundtrip, found 1 hour ago
$287
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Thu, Dec 4 from Washington to Boise, returning Sat, Dec 6, priced at $287 found 1 hour ago
United
Tue, Dec 9 - Wed, Dec 10
DCA
Washington
BOI
Boise
$316 Roundtrip, found 9 hours ago
$316
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Dec 9 from Washington to Boise, returning Wed, Dec 10, priced at $316 found 9 hours ago
American Airlines
Sat, Jan 24 - Sat, Jan 31
DCA
Washington
BOI
Boise
$321 Roundtrip, found 8 hours ago
$321
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to Boise, returning Sat, Jan 31, priced at $321 found 8 hours 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 $495
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $495

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 $142 or cheap return flight from $140 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 December 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.

Travel information

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
$140
Distance
2042 mi

Book with confidence

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 December. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $142 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.

 

Washington to Boise Flights

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*Available to One Key members.