Cheap Flights from Washington (DCA) to Boulder (WBU)

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal) cost?
Snag a cheap one-way flight or cheap return flight from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between DCA and WBU. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DCA to WBU flight.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal)?
Direct flights from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DCA to WBU?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the airline, time of year and other factors.*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 Boulder, CO (WBU-Boulder Municipal)?
To avoid possible delays on the Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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.
What airports do you fly into for Boulder from Ronald Reagan Washington National Airport (DCA)?
If you're on a direct flight from Ronald Reagan Washington National Airport (DCA) to Boulder, Denver Intl. Airport (DEN) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal) last-minute?
Last-minute fares from DCA to WBU are generally more expensive. To lock in the lowest rates, start looking for flights early. That said, if you're flexible with your travel dates, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a DCA to WBU flight and hotel package?
You'll generally save money by securing a DCA to WBU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Boulder, CO (WBU-Boulder Municipal)?
If you booked your DCA to WBU flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Boulder Municipal
Distance
1499 mi

Book with confidence

Book with confidence

Washington to Boulder Flights

The cheapest times to fly from Washington to Boulder

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 Boulder are during the month of . You can find some of the cheapest flights from Washington to Boulder with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Boulder

Sunday is one of the best days to book for cheap flights from Washington to Boulder: 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 Boulder

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 Boulder in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Boulder 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 Boulder 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 Boulder Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.