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£100 Cheap Flights from Denver (DEN) to Washington (DCA)

View £100 flight on Sun, 30 Aug 2026Opens in a new window

Flight 1

Popular airlines from Denver International Airport (DEN) to Ronald Reagan National Airport (DCA)

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

Prices were available within the past 7 days and start at £100 for one-way flights and £245 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Fri, 4 Sept - Fri, 11 Sept
DEN
Denver
DCA
Washington
£245 Return, found 5 days ago
£245
Return
found 5 days ago
Select JetBlue Airways flight, departing Fri, 4 Sept from Denver to Washington, returning Fri, 11 Sept, priced at £245 found 5 days ago
JetBlue Airways
Fri, 4 Sept - Fri, 11 Sept
DEN
Denver
DCA
Washington
£288 Return, found 5 days ago
£288
Return
found 5 days ago
Select JetBlue Airways flight, departing Fri, 4 Sept from Denver to Washington, returning Fri, 11 Sept, priced at £288 found 5 days ago
JetBlue Airways
Fri, 4 Sept - Fri, 11 Sept
DEN
Denver
DCA
Washington
£304 Return, found 5 days ago
£304
Return
found 5 days ago
Select JetBlue Airways flight, departing Fri, 4 Sept from Denver to Washington, returning Fri, 11 Sept, priced at £304 found 5 days ago
JetBlue Airways
Thu, 27 Aug - Wed, 2 Sept
DEN
Denver
DCA
Washington
£309 Return, found 23 hours ago
£309
Return
found 23 hours ago
Select JetBlue Airways flight, departing Thu, 27 Aug from Denver to Washington, returning Wed, 2 Sept, priced at £309 found 23 hours ago
JetBlue Airways
Fri, 4 Sept - Fri, 11 Sept
DEN
Denver
DCA
Washington
£312 Return, found 5 days ago
£312
Return
found 5 days ago
Select JetBlue Airways flight, departing Fri, 4 Sept from Denver to Washington, returning Fri, 11 Sept, priced at £312 found 5 days ago
JetBlue Airways
Wed, 19 Aug - Mon, 24 Aug
DEN
Denver
DCA
Washington
£318 Return, found 16 hours ago
£318
Return
found 16 hours ago
Select JetBlue Airways flight, departing Wed, 19 Aug from Denver to Washington, returning Mon, 24 Aug, priced at £318 found 16 hours ago
JetBlue Airways
Wed, 19 Aug - Mon, 24 Aug
DEN
Denver
DCA
Washington
£324 Return, found 16 hours ago
£324
Return
found 16 hours ago
Select JetBlue Airways flight, departing Wed, 19 Aug from Denver to Washington, returning Mon, 24 Aug, priced at £324 found 16 hours ago
JetBlue Airways
Wed, 19 Aug - Mon, 24 Aug
DEN
Denver
DCA
Washington
£325 Return, found 16 hours ago
£325
Return
found 16 hours ago
Select JetBlue Airways flight, departing Wed, 19 Aug from Denver to Washington, returning Mon, 24 Aug, priced at £325 found 16 hours ago
JetBlue Airways
Wed, 19 Aug - Mon, 24 Aug
DEN
Denver
DCA
Washington
£329 Return, found 16 hours ago
£329
Return
found 16 hours ago
Select JetBlue Airways flight, departing Wed, 19 Aug from Denver to Washington, returning Mon, 24 Aug, priced at £329 found 16 hours ago
Alaska Airlines
Wed, 16 Sept - Wed, 23 Sept
DEN
Denver
DCA
Washington
£333 Return, found 1 day ago
£333
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 16 Sept from Denver to Washington, returning Wed, 23 Sept, priced at £333 found 1 day ago

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) cost?
You can find one-way and return flights from DEN to DCA with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when DEN to DCA ticket fares go up or down.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The cheapest months to fly from DEN to DCA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
There are 2 airlines offering direct flights from Denver Intl. (DEN) to Ronald Reagan Washington National (DCA). Here are the top carriers:
  • Frontier Airlines operates 20 direct flights from Denver Intl. (DEN) to Ronald Reagan Washington National (DCA) every week.
  • United operates 7 direct flights from Denver Intl. (DEN) to Ronald Reagan Washington National (DCA) every week.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
Frontier Airlines is one of the cheapest airlines offering nonstop return flights from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National), with tickets starting from around £43 for flights that can be booked for departure within the next year. Southwest Airlines offers one of the cheapest connecting return flights on this route, starting from around £89 with a layover in Eppley Field (OMA). These prices are per adult for economy/coach class. 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.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National), 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 Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The best airline to fly with from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) will differ from traveler to traveler. If you like to fly early, Frontier Airlines 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 Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National), 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 Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
You'll find approximately 4 nonstop flights per day from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National). For even more choices, look at flights that include layovers, as there are around 140 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Seattle - Tacoma Intl. (SEA), and Hartsfield-Jackson Atlanta Intl. (ATL).
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The earliest flight from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) typically departs around 12:15 AM. This service is operated by American Airlines. Please note that this is a seasonal service, active in November and December. An early departure like this can be really handy if you want to maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
You'll find the most flights from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) on a Sunday, with around 99 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, United, and American Airlines. Flight schedules are fairly consistent throughout the week, with Sundays having only slightly more flights than other days.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The most popular departure times for flights from Denver Intl. (DEN) to Ronald Reagan Washington National (DCA) are in the early morning, from 6am to 9am. Many major carriers, including Frontier Airlines, Southwest Airlines and American Airlines, offer flights during this window. Many travellers prefer these times as it allows them to arrive at their destination early in the day, giving them more time for business or leisure activities.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
A non-stop flight from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) typically takes around 3 hours 30 minutes. This route covers a distance of approximately 2,369 kilometers. If you opt for a flight with one stop, your travel time will be longer, usually around 6 hours 30 minutes. Flights with two or more stops can take significantly longer, often around 9 hours 50 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
You can fly business class or first class between DEN and DCA. Airlines that offer business class service on this route include:

  • Frontier Airlines
  • Delta

First class cabins are available on:

  • Alaska Airlines
  • United
  • Delta
  • American Airlines

How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) 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 Washington, DC (DCA) from Denver, CO (DEN)?
If you're planning to travel to Washington from Denver Intl. (DEN), you can fly directly into Ronald Reagan Washington National (DCA). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), or San Diego Intl. (SAN) before reaching Washington. 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 Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) 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 Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package 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 Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
If you booked your Denver, CO (DEN-Denver Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) 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
Denver Intl.
Destination airport
Ronald Reagan Washington National
Airlines serving
Alaska Airlines, JetBlue Airways
Return price
£244
Distance
2355 km
Average flight time
8 hours 17 mins

Book with confidence

Compare flights from Denver to Washington easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Denver to Washington. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Ronald Reagan Washington National in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Denver Intl. to Ronald Reagan Washington National.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Denver Intl. (DEN) to Ronald Reagan Washington National (DCA)

The easiest way to view the best deals on flights from Denver to Washington today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Denver Intl. to Ronald Reagan Washington National start at just £245 and range up to £333.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Denver and Washington
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Denver to Washington flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Denver Intl. to Ronald Reagan Washington National for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Denver to Washington easily and book with confidence

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*Available to Expedia members.