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

$84+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — IAD
oct. 11 — oct. 181
sam. 10/11
sam. 10/18
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

Keep the following information in mind while searching for Denver to District of Columbia flight deals. Data was last updated septembre 11, 2025.

Round-trip from

$135
(Cheapflightsfares)

One-way from

$84
(Kissandfly.com)

Popular in

December

Cheapest in

September

Average price

$234

Good round-trip deal

$149 or less

Good one-way deal

$98 or less
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. 7% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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

Find 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 septembre 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
dim. 10/56:45 amDEN - DCA
Nonstop3h 25mFrontier
mer. 10/157:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/10$135
This Frontier deal was found by Cheapflights users on 9/10. 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.
dim. 10/126:38 amDEN - DCA
Nonstop3h 26mFrontier
mer. 10/157:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/10$136
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
mar. 9/234:30 pmDEN - DCA
Nonstop3h 29mFrontier
mer. 10/17:00 amDCA - DEN
Nonstop3h 58mFrontier
Deal found 9/10$137
This Frontier deal was found by Cheapflights users on 9/9. 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.
dim. 10/126:38 amDEN - DCA
Nonstop3h 26mFrontier
mer. 10/227:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/9$138
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
dim. 10/126:38 amDEN - DCA
Nonstop3h 26mFrontier
sam. 10/187:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/10$140
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
jeu. 12/1111:38 amDEN - DCA
Nonstop3h 21mFrontier
dim. 12/147:00 amDCA - DEN
Nonstop4h 17mFrontier
Deal found 9/11$142
This Frontier deal was found by Cheapflights users on 9/10. 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.
mer. 9/246:45 amDEN - DCA
Nonstop3h 25mFrontier
mar. 9/307:00 amDCA - DEN
Nonstop3h 58mFrontier
Deal found 9/10$143
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
dim. 10/56:45 amDEN - DCA
Nonstop3h 25mFrontier
sam. 10/111:00 pmDCA - DEN
Nonstop4h 07mFrontier
Deal found 9/9$147
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 11/155:05 pmDEN - IAD
Nonstop3h 10mSouthwest
mar. 11/185:45 pmIAD - DEN
Nonstop4h 00mSouthwest
Deal found 9/11$149
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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.
jeu. 10/211:25 amDEN - DCA
Nonstop3h 34mFrontier
mar. 10/76:31 pmDCA - DEN
Nonstop3h 59mFrontier
Deal found 9/8$149
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/2212:59 amDEN - IAD
1 stop12h 39mFrontier
mar. 10/288:47 amIAD - DEN
1 stop6h 58mFrontier
Deal found 9/10$150
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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.
mer. 10/16:45 amDEN - DCA
Nonstop3h 25mFrontier
mer. 10/87:00 amDCA - DEN
Nonstop4h 08mFrontier
Deal found 9/8$150

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 septembre 11, 2025.
Use the filters below to find and compare flights from Denver to District of Columbia that are best for you.

Fly from

Denver

Fly to

District of Columbia

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 10/28

11:59 pm-5:16 am

Nonstop3h 17m

Washington, D.C. Dulles Intl

sam. 11/1

9:57 am-11:58 am

Nonstop4h 01m

$149

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

sam. 11/15

9:35 am-2:55 pm

Nonstop3h 20m

Washington, D.C. Reagan-National

mar. 11/18

5:00 pm-9:49 pm

1 stop6h 49m

$155

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

sam. 11/15

6:00 am-3:15 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

mar. 11/18

5:45 pm-7:45 pm

Nonstop4h 00m

$159

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 11/11

5:00 pm-10:10 pm

Nonstop3h 10m

Washington, D.C. Dulles Intl

sam. 11/15

3:55 pm-5:50 pm

Nonstop3h 55m

$163

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jeu. 10/23

11:59 pm-5:22 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

mar. 10/28

10:10 pm-12:15 am

Nonstop4h 05m

$165

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

ven. 10/3

3:40 pm-9:07 pm

Nonstop3h 27m

Washington, D.C. Dulles Intl

mer. 10/8

2:45 pm-4:35 pm

Nonstop3h 50m

$165

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 9/30

11:59 pm-5:22 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

ven. 10/3

10:09 pm-11:57 pm

Nonstop3h 48m

$165

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

sam. 11/15

9:30 am-7:30 pm

2 stops8h 00m

Washington, D.C. Reagan-National

mar. 11/18

4:40 pm-7:50 pm

1 stop5h 10m

$170

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mer. 11/5

5:00 pm-10:10 pm

Nonstop3h 10m

Washington, D.C. Dulles Intl

dim. 11/9

5:05 am-7:00 am

Nonstop3h 55m

$190

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jeu. 11/20

5:00 pm-10:10 pm

Nonstop3h 10m

Washington, D.C. Dulles Intl

ven. 12/5

5:45 pm-7:45 pm

Nonstop4h 00m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 46 results
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, August is the cheapest month in which you can book a flight from Denver to District of Columbia (average of $292). Flying from Denver to District of Columbia in April is currently the most expensive (average of $337). 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 septembre 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to District of Columbia as you normally would.

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 septembre 11, 2025.

The most flights from DEN to USDC are scheduled on a Thursday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 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 septembre 11, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 17m. Fly via United Airlines or Southwest 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 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: Avianca (92%), Brussels Airlines (78%), United Airlines (76%).

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

    The cheapest flight price from Denver to District of Columbia is $99. On average you can expect to pay $850. The most popular route, (Denver Intl - Washington, D.C. Reagan-National), can usually be booked for $103.

  • 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, August is the cheapest month in which you can book a flight from Denver to District of Columbia (average of $292). Flying from Denver to District of Columbia in April is currently the most expensive (average of $337). 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 LaGuardia flights
Denver to John F Kennedy Intl flights
Denver to O'Hare Intl flights
Denver to Newark flights
Denver to Seattle flights
Denver to Boston flights
Denver to Dallas/Fort Worth flights
Denver to Orlando flights
Denver to Los Angeles flights
Denver to Miami flights
Denver to Sky Harbor Intl flights
Denver to San Francisco flights
Denver to Hobby flights
Denver to Atlanta flights
Denver to Ontario flights
Denver to Detroit flights
Denver to Tampa flights
Denver to Baltimore flights
Denver to Austin flights
Denver to Philadelphia flights
Denver to San Diego flights
Denver to Honolulu flights
Denver to Midway flights
Denver to Fort Lauderdale flights
Denver to Nashville flights
Denver to George Bush Intcntl flights
Denver to Santa Ana flights
Denver to Salt Lake City flights
Denver to Minneapolis flights
Denver to Portland flights
Denver to New Orleans flights
Denver to Raleigh flights
Denver to Kansas City flights
Denver to Charlotte flights
Denver to Reagan-National flights
Denver to Dulles Intl flights
Denver to Kahului flights
Denver to Kailua-Kona flights
Denver to San Antonio flights
Denver to Indianapolis flights
Denver to St. Louis flights
Denver to Cincinnati flights
Denver to Jacksonville flights
Denver to Charleston flights
Denver to Lihue flights
Denver to Hartford flights
Denver to Madison flights
Denver to Fort Myers flights
Denver to San Jose 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 septembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$233FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$344FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$327FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$173Average$384FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$179Average$340FlexibilityNo cancel feeOn-time63%

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.