An escalator in a modern building with geometric wall patterns and overhead lighting.

$121 Cheap Flights from Washington (DCA) to Denver (DEN)

View $121 flight on Mon, Oct 5, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

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

  • Earn twice

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

Cheap Flights from Washington to Denver (DCA-DEN)

Prices were available within the past 7 days and start at $121 for one-way flights and $242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Oct 5 - Sun, Oct 11
DCA
Washington
DEN
Denver
$242 Roundtrip, just found
$242
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Oct 5 from Washington to Denver, returning Sun, Oct 11, priced at $242 just found
Frontier Airlines
Thu, Oct 8 - Sun, Oct 11
DCA
Washington
DEN
Denver
$258 Roundtrip, just found
$258
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 8 from Washington to Denver, returning Sun, Oct 11, priced at $258 just found
Frontier Airlines
Tue, Sep 22 - Mon, Sep 28
DCA
Washington
DEN
Denver
$263 Roundtrip, just found
$263
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Sep 22 from Washington to Denver, returning Mon, Sep 28, priced at $263 just found
Frontier Airlines
Wed, Sep 16 - Tue, Sep 22
DCA
Washington
DEN
Denver
$280 Roundtrip, found 1 day ago
$280
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Sep 16 from Washington to Denver, returning Tue, Sep 22, priced at $280 found 1 day ago
Frontier Airlines
Thu, Oct 15 - Sat, Oct 17
DCA
Washington
DEN
Denver
$282 Roundtrip, just found
$282
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 15 from Washington to Denver, returning Sat, Oct 17, priced at $282 just found
Frontier Airlines
Tue, Oct 13 - Fri, Oct 16
DCA
Washington
DEN
Denver
$287 Roundtrip, found 23 hours ago
$287
Roundtrip
found 23 hours ago
Select Frontier Airlines flight, departing Tue, Oct 13 from Washington to Denver, returning Fri, Oct 16, priced at $287 found 23 hours ago
Southwest Airlines
Mon, Oct 5 - Sun, Oct 11
DCA
Washington
DEN
Denver
$296 Roundtrip, just found
$296
Roundtrip
just found
Select Southwest Airlines flight, departing Mon, Oct 5 from Washington to Denver, returning Sun, Oct 11, priced at $296 just found
United
Sat, Nov 21 - Thu, Nov 26
DCA
Washington
DEN
Denver
$339 Roundtrip, found 1 hour ago
$339
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Nov 21 from Washington to Denver, returning Thu, Nov 26, priced at $339 found 1 hour ago
Delta
Fri, Oct 2 - Sat, Oct 3
DCA
Washington
DEN
Denver
$353 Roundtrip, found 4 hours ago
$353
Roundtrip
found 4 hours ago
Select Delta flight, departing Fri, Oct 2 from Washington to Denver, returning Sat, Oct 3, priced at $353 found 4 hours ago
American Airlines
Thu, Oct 15 - Sat, Oct 17
DCA
Washington
DEN
Denver
$359 Roundtrip, just found
$359
Roundtrip
just found
Select American Airlines flight, departing Thu, Oct 15 from Washington to Denver, returning Sat, Oct 17, priced at $359 just found

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $294
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $294

Find the cheapest month to fly from Washington (DCA) to Denver (DEN)

August is typically the cheapest month to fly

From $203 - $254 per traveler.

What you need to know for your flight from Ronald Reagan Washington National to Denver Intl.

Washington (DCA) to Denver (DEN) at a glance

Travel from Washington, D.C. (DCA) to Denver (DEN) with a selection of airlines offering a range of options on this domestic short-haul route. Whether you prefer full-service or budget carriers, you can compare choices to discover the best itinerary that aligns with your budget, schedule, and travel plans as you uncover the iconic sights and neighborhoods of Denver. Get essential information on flights from Ronald Reagan Washington National Airport (DCA) to Denver International Airport (DEN).

  • Fastest flight duration: around 4h 15m non-stop
  • Route distance: roughly 1,500 miles (2,410 km)
  • Flights per week: around 30+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $50–$340, depending on seasonality and how far ahead you book

Flights from Ronald Reagan Washington National Airport (DCA) to Denver International Airport (DEN)

According to recent flight bookings, here are the top airlines travelers prefer for journeys from Washington to Denver, focusing on both non-stop and one-stop flights. Common layover spots include O'Hare International Airport (ORD) with a layover of approximately 1 hour and 15 minutes, Midway International Airport (MDW) at about 1 hour, and Nashville International Airport (BNA) with a 50-minute layover. This variety allows you to explore options that balance price, total travel time, and cabin class for the best travel experience.

  • Frontier Airlines: This budget-friendly airline provides non-stop flights, with one-way ticket prices generally between $50 and $290. It operates around 57% of flights on this route, with a total travel duration of approximately 4 hours and 15 minutes.
  • United: A comprehensive service airline, United offers both non-stop and one-stop options, with one-way fares typically ranging from $100 to $495. It accounts for about 16% of departures on this route, with a non-stop flight time of 4 hours and 15 minutes.
  • Southwest Airlines: Known for its low-cost fares, Southwest provides both non-stop and one-stop services, with one-way prices usually between $90 and $385. This airline makes up roughly 13% of departures, with a standard one-stop journey taking about 5 hours of flight time and a total travel time of around 6 hours and 15 minutes.
  • American Airlines: Offering one-stop flights, American Airlines typically charges one-way fares from $100 to $385. It represents about 7% of flights on this route, featuring an in-flight duration of 5 hours and a total journey time of approximately 6 hours and 15 minutes, including layovers.
  • Delta: As a full-service carrier, Delta provides one-stop service with one-way fares generally between $110 and $475. It comprises around 5% of the departures for this route, with an in-flight duration of 5 hours and an overall journey time of about 6 hours and 15 minutes, factoring in layovers.

Travelers can enhance their journey from Washington to Denver by opting for an upgrade. United Airlines provides first-class service on this route for a more luxurious experience.

Best time to fly from Washington (DCA) to Denver (DEN)

The most popular months for travelers flying from Washington to Denver are January, February, and March, when peak temperatures in Denver reach up to 38.5°F in March. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 65.1°F. For better deals, January usually offers the lowest average one-way fare around $145. Flight availability peaks in December, with approximately 36 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 28 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $145, roughly 15% cheaper than the yearly average.
  • More budget-friendly months to fly: September, February, and August typically offer average one-way fares of around $150.
  • Most flight options: December has the highest number of flights from Washington to Denver, with approximately 36 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January28.4°F (-2.0°C)Moderately High28$145
February28.6°F (-1.9°C)Moderately High31$149
March38.5°F (3.6°C)Moderately High32$191
April45.3°F (7.4°C)Average29$184
May54.0°F (12.2°C)Moderately Low30$183
June66.9°F (19.4°C)Average35$185
July72.1°F (22.3°C)Average32$166
August71.2°F (21.8°C)Average32$153
September65.1°F (18.4°C)Moderately Low30$147
October50.2°F (10.1°C)Average35$156
November38.5°F (3.6°C)Moderately Low31$188
December28.9°F (-1.7°C)Average36$201

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Washington (DCA) to Denver (DEN)

  • Washington to Colorado Springs (DCA-COS): Colorado Springs Airport (COS) lies approximately 73 miles from Denver International Airport (DEN). One-way economy tickets for this route generally fall between $120 and $470, influenced by the season and how far in advance you book. Flights typically include both one-stop and multi-stop options, with common layover points at Dallas-Fort Worth International Airport (DFW) and O'Hare International Airport (ORD). Major airlines servicing this route are American Airlines and United, with first-class service also available.
  • Washington to Denver (IAD-DEN): Located about 23 miles from Ronald Reagan Washington National Airport (DCA), Washington Dulles International Airport (IAD) offers one-way economy fares ranging from $90 to $410, depending on the booking time and season. This route features non-stop and one-stop flight options. United and Southwest Airlines, a low-cost carrier, are the primary airlines operating on this route. First-class seating is also an option for travelers seeking a more premium experience.

How to find the best prices for flights from Washington (DCA) to Denver (DEN)

Getting some of the best deals on flights from Washington to Denver is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which coincides with the timing of most travelers. Morning departures (5am-12pm) often offer lower prices, while afternoon flights (12pm-6pm) are more popular. Additionally, flying on Saturday tends to be cheaper, although Friday remains the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Denver International Airport from Ronald Reagan Washington National Airport

Denver welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Ronald Reagan Washington National Airport is roughly a 10-minute drive (covering about 5 miles) from central Washington. Here's how to reach Denver efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Denver, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Denver International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Denver International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Denver International Airport, Jeppesen Terminal Station, a metro station, is conveniently located just 0.1 miles away on foot, providing easy access to public transportation options for travelers.

Frequently asked questions

How much does a flight from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $121 and cheap return flights from $242 Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights typically cost between $162 and $1037, and return flights often range between $289 and $1144. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
September is the cheapest month to fly from Washington, DC (DCA) to Denver, CO (DEN), with average round-trip fares around $296. This is about 14% lower than the average price throughout the year, as September often sees a drop in travel after the summer season. Other economical months to consider are January and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
2 airlines operate nonstop service from DCA to DEN:

  • Frontier Airlines operates around 20 direct flights from DCA to DEN every week
  • United operates around 7 direct flights from DCA to DEN every week

What is the cheapest airline that flies from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
Frontier Airlines is one of the cheapest airlines offering nonstop flights from Ronald Reagan Washington National (DCA) to Denver Intl. (DEN), with round-trip tickets starting from around $50. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Washington, DC (DCA) to Denver, CO (DEN) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. United offers the most daily flights from Washington, DC to Denver, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
The best time to fly from Washington, DC (DCA) to Denver (DEN) is typically in September or October. During these months, you can expect average return flight prices around $296, making it a budget-friendly option. September is particularly appealing as it offers pleasant weather and fewer crowds, allowing you to enjoy your trip to the fullest.*Prices based on flights available on Expedia in the last year.
How many flights per day from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
You can find approximately 3 nonstop flights per day from Ronald Reagan Washington National (DCA) to Denver Intl. (DEN). For more options, look at flights that include layovers.
What is the earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from DCA to DEN. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Washington, DC (DCA) to Denver (DEN) are in the morning, from 6am to 9am. About 32% of passengers prefer this time window. Many major carriers, including Southwest Airlines, Frontier Airlines, and American Airlines, offer flights during this window. This timing works well because it lets you arrive in Denver with a full day ahead to enjoy the beautiful scenery.
How long does it take to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
Direct flights from DCA to DEN usually take about 4 hours 20 minutes, traveling roughly 1,472 miles. If you opt for a connecting flight, expect to add around 2 hours 40 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
First class is available on flights from DCA to DEN. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How much is a business class flight from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
A direct, return business class ticket from Washington, DC (DCA) to Denver (DEN) typically costs between $1,576 - $2,337. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from Ronald Reagan Washington National (DCA)?
From Ronald Reagan Washington National (DCA), you can fly into Denver Intl. (DEN) to reach Denver. Some flights may connect through major hubs like Midway Intl. (MDW), Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.)?
If you booked your Washington, DC (DCA-Ronald Reagan Washington National) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket 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 if you'd like more information.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$242
Distance
1471 mi
Average flight time
2 hours 47 mins

Book with confidence

Washington to Denver Flights

The cheapest times to fly from Washington to Denver

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

 

The best time to book a flight from Washington to Denver

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

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 Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $121 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 Denver 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 Denver 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 Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia