HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
District of Columbia

$76+ Cheap flights from Denver (DEN) to District of Columbia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — IAD
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to District of Columbia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Denver to District of Columbia

Cheapest flights from Denver to District of Columbia
Explore the most affordable flight options available from Denver to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Sat 4/258:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Deal found 3/18$147
This Frontier deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Mon 4/201:59 pm
DCA
-
DEN
Nonstop4h 05m
Frontier
Deal found 3/18$148
This Frontier deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:31 am
DEN
-
DCA
Nonstop3h 28m
Frontier
Wed 5/131:59 pm
DCA
-
DEN
Nonstop3h 56m
Frontier
Deal found 3/19$149
This Cheapflightsfares deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Thu 4/308:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Deal found 3/18$156
This Cheapflightsfares deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:27 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Sun 5/107:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 3/20$157
This Booking.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:59 pm
DEN
-
IAD
1 stop8h 23m
Frontier
Sat 5/28:12 am
IAD
-
DEN
1 stop8h 19m
Frontier
Deal found 3/20$160
This eDestinos deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Tue 4/288:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Deal found 3/22$161
This Cheapflightsfares deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:27 pm
DEN
-
DCA
Nonstop3h 31m
Frontier
Mon 5/117:00 am
DCA
-
DEN
Nonstop4h 07m
Frontier
Deal found 3/17$162
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Sat 4/181:59 pm
DCA
-
DEN
Nonstop4h 05m
Frontier
Deal found 3/18$165
This Travelocity deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:09 pm
DEN
-
IAD
1 stop9h 27m
Frontier
Sat 4/188:12 am
IAD
-
DEN
1 stop16h 47m
Frontier
Deal found 3/20$166
This Super.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Sat 4/186:00 pm
DCA
-
DEN
Nonstop4h 11m
Frontier
Deal found 3/18$166
This Frontier deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:34 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Mon 4/278:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Deal found 3/20$168

Find flight deals from Denver to District of Columbia

Keep the following information in mind while searching for Denver to District of Columbia flight deals. Data was last updated March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$148
(Frontier)

One-way from

$76
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$324

Good round-trip deal

$225 or less

Good one-way deal

$133 or less
Provider with most accurate pricing for Denver Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. (WAS) flights.
Search Deals
From Denver Intl to District of Columbia
Search Deals
One-way flight from Denver Intl to District of Columbia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to District of Columbia.
Search Deals
Price to beat on a one-way flight from Denver Intl to District of Columbia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to District of Columbia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 23, 2026.
Use the filters below to find and compare flights from Denver to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 5/6

8:20 am-4:10 pm

1 stop5h 50m

Washington, D.C. Reagan-National

Wed 5/13

3:55 pm-8:40 pm

1 stop6h 45m

$257

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 5/2

11:00 am-6:00 pm

1 stop5h 00m

Washington, D.C. Reagan-National

Sat 5/9

12:15 pm-7:10 pm

2 stops8h 55m

$262
Quickest round-trip

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 4/24

7:05 pm-12:20 am

Nonstop3h 15m

Washington, D.C. Dulles Intl

Sun 4/26

5:50 am-7:40 am

Nonstop3h 50m

$277

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Mon 5/11

1:45 pm-10:45 pm

1 stop7h 00m

Washington, D.C. Reagan-National

Wed 5/13

7:00 pm-10:35 pm

1 stop5h 35m

$277

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 4/22

3:00 pm-11:00 pm

1 stop6h 00m

Washington, D.C. Reagan-National

Sun 4/26

6:50 pm-12:20 am

1 stop7h 30m

$277

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 5/9

5:45 am-3:05 pm

1 stop7h 20m

Washington, D.C. Dulles Intl

Sat 5/16

5:50 am-7:40 am

Nonstop3h 50m

$287

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Mon 4/20

6:20 am-4:20 pm

1 stop8h 00m

Washington, D.C. Reagan-National

Tue 4/21

6:10 am-10:25 am

1 stop6h 15m

$287

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 5/8

7:40 am-5:05 pm

1 stop7h 25m

Washington, D.C. Dulles Intl

Sun 5/10

4:25 pm-12:40 am

1 stop10h 15m

$297

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sun 5/10

7:25 pm-12:40 am

Nonstop3h 15m

Washington, D.C. Dulles Intl

Sun 5/17

5:50 am-7:40 am

Nonstop3h 50m

$297

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 4/21

1:15 pm-9:55 pm

2 stops6h 40m

Washington, D.C. Reagan-National

Thu 4/23

6:10 am-9:35 am

1 stop5h 25m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 46 resultsSorted by cheapest first
1
2
3
...
5

Best time to book a flight from Denver to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to District of Columbia

What is the cheapest month to book a flight from Denver to District of Columbia?

Currently, January is the cheapest month in which you can book a flight from Denver to District of Columbia (average of $70). Flying from Denver to District of Columbia in May is currently the most expensive (average of $148). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to DC?

Find hourly flight availability from Denver to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 23, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 27% on flights from Denver to District of Columbia by exploring options for tickets in the morning.

What is the cheapest day to fly from Denver to District of Columbia?

Use this chart to determine the cheapest time to fly round-trip from Denver to District of Columbia. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their Denver to District of Columbia flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to District of Columbia

Explore weekly flight availability from Denver to District of Columbia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 23, 2026.

The most flights from DEN to USDC are scheduled on a Sunday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 on average).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to District of Columbia. Reviews last updated March 23, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Denver to District of Columbia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,319 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,462 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,489 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,019 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Denver to District of Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to District of Columbia?

    For a flight from Denver to District of Columbia, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

  • How long is the flight from Denver to District of Columbia?

    There are many flights that can get you from Denver to District of Columbia in 3h 31m. Fly via Southwest or United Airlines to get the fastest option. The distance from Denver to District of Columbia is about 1448 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Denver to District of Columbia one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $55. However, be on the lookout for offers from JetBlue and Southwest, as they are both options that can get you from Denver to District of Columbia for a low price.

  • What are the most reliable airlines from Denver to District of Columbia?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to District of Columbia on time: Lufthansa (95%), Avianca (92%), Ethiopian Air (89%).

  • What are the cheapest flights from Denver to District of Columbia?

    The cheapest flight price from Denver to District of Columbia is $148. On average you can expect to pay $968. The most popular route, (Denver Intl - Washington, D.C. Dulles Intl), can usually be booked for $227.

  • Can I find deals for flights from Denver to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Denver to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to District of Columbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to District of Columbia.

  • Can I find deals for business class flights from Denver to District of Columbia?

    Yes. Cheapflights offers flight deals from Denver to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to District of Columbia?

    Currently, January is the cheapest month in which you can book a flight from Denver to District of Columbia (average of $70). Flying from Denver to District of Columbia in May is currently the most expensive (average of $148). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to Seattle flights
Denver to O'Hare Intl flights
Denver to Los Angeles flights
Denver to LaGuardia flights
Denver to Orlando flights
Denver to John F Kennedy Intl flights
Denver to Dallas/Fort Worth flights
Denver to Miami flights
Denver to Newark flights
Denver to San Francisco flights
Denver to Sky Harbor Intl flights
Denver to San Diego flights
Denver to Dulles Intl flights
Denver to Ontario flights
Denver to Tampa flights
Denver to Boston flights
Denver to Atlanta flights
Denver to Baltimore flights
Denver to Nashville flights
Denver to New Orleans flights
Denver to Portland flights
Denver to Honolulu flights
Denver to Hobby flights
Denver to Philadelphia flights
Denver to Santa Ana flights
Denver to Reagan-National flights
Denver to Midway flights
Denver to Detroit flights
Denver to George Bush Intcntl flights
Denver to Fort Lauderdale flights
Denver to Minneapolis flights
Denver to Fort Myers flights
Denver to Charlotte flights
Denver to Sacramento flights
Denver to Kahului flights
Denver to Austin flights
Denver to St. Louis flights
Denver to Raleigh flights
Denver to Kansas City flights
Denver to Indianapolis flights
Denver to Pensacola flights
Denver to Charleston flights
Denver to Cincinnati flights
Denver to Reno flights
Denver to San Antonio flights
Denver to Grand Rapids flights
Denver to Burbank flights
Denver to Jacksonville flights
Denver to Savannah flights

Top 5 airlines flying from Denver to District of Columbia

Discover the top 5 airlines that operate flights from Denver to District of Columbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$244FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$302FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$168Average$388FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$344FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$196Average$279FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.