Cheap flights from Colorado to Washington, D.C. from $52

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Washington, D.C. departing on 10/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Colorado to Washington, D.C.

Cheap round-trip flights

Frontier Logo
11:25 am - 4:59 pmDEN-DCA
3h 34mnonstop
Frontier Logo
6:00 pm - 7:58 pmDCA-DEN
3h 58mnonstop
$96Frontier
Find Deal
Tue, Sep 9 - Tue, Sep 16
Frontier Logo
11:25 am - 4:59 pmDEN-DCA
3h 34mnonstop
Frontier Logo
7:00 am - 8:58 amDCA-DEN
3h 58mnonstop
$105Frontier
Find Deal
Tue, Sep 9 - Tue, Sep 16
Frontier Logo
6:45 am - 12:11 pmDEN-DCA
3h 26mnonstop
Frontier Logo
1:00 pm - 2:59 pmDCA-DEN
3h 59mnonstop
$106Frontier
Find Deal
Wed, Aug 27 - Wed, Sep 3
Southwest Logo
5:30 pm - 10:50 pmDEN-IAD
3h 20mnonstop
Southwest Logo
5:45 am - 7:20 amIAD-DEN
3h 35mnonstop
$157Southwest
Find Deal
Sat, Aug 30 - Tue, Sep 2
United Airlines Logo
2:00 pm - 7:27 pmDEN-BWI
3h 27mnonstop
United Airlines Logo
8:32 am - 10:28 amBWI-DEN
3h 56mnonstop
$157United Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
Southwest Logo
12:30 pm - 11:10 pmCOS-BWI
8h 40m1 stop
Southwest Logo
10:55 am - 5:35 pmBWI-COS
8h 40m1 stop
$160Southwest
Find Deal
Wed, Oct 22 - Tue, Oct 28
American Airlines Logo
6:02 am - 4:50 pmCOS-IAD
8h 48m1 stop
American Airlines Logo
5:40 pm - 10:08 pmIAD-COS
6h 28m1 stop
$161American Airlines
Find Deal
Tue, Sep 9 - Wed, Sep 10
American Airlines Logo
5:16 pm - 1:00 amCOS-DCA
5h 44m1 stop
American Airlines Logo
6:30 am - 11:51 amDCA-COS
7h 21m1 stop
$161American Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
8:00 am - 1:26 pmDEN-IAD
3h 26mnonstop
United Airlines Logo
10:14 pm - 11:59 pmIAD-DEN
3h 45mnonstop
$165United Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 13
 Logo
5:43 pm - 9:33 amDEN-BWI
13h 50m1 stop
 Logo
6:27 pm - 8:29 pmBWI-DEN
4h 02mnonstop
Thu, Sep 11 - Sun, Sep 14

Delta flights from Colorado to Washington, D.C.

Our best Delta deals on Colorado to Washington, D.C. flight tickets
Delta
Aug 28
COS1:10 pmColorado Springs
8h 36m
1 stop
DCA11:46 pmWashington, D.C. Reagan-National
Aug 31
DCA6:10 amWashington, D.C. Reagan-National
6h 06m
1 stop
COS10:16 amColorado Springs
Delta
Aug 28
COS1:10 pmColorado Springs
5h 37m
1 stop
DCA8:47 pmWashington, D.C. Reagan-National
Aug 31
DCA9:59 amWashington, D.C. Reagan-National
12h 42m
2 stops
COS8:41 pmColorado Springs
Delta
Oct 24
COS1:16 pmColorado Springs
6h 27m
1 stop
DCA9:43 pmWashington, D.C. Reagan-National
Oct 27
DCA7:59 amWashington, D.C. Reagan-National
6h 12m
1 stop
COS12:11 pmColorado Springs

Frontier flights from Colorado to Washington, D.C.

Our best Frontier deals on Colorado to Washington, D.C. flight tickets
Frontier
Sep 9
DEN11:25 amDenver Intl
3h 34m
DCA4:59 pmWashington, D.C. Reagan-National
Sep 16
DCA6:00 pmWashington, D.C. Reagan-National
3h 58m
DEN7:58 pmDenver Intl
Frontier
Sep 9
DEN11:25 amDenver Intl
3h 34m
DCA4:59 pmWashington, D.C. Reagan-National
Sep 16
DCA7:00 amWashington, D.C. Reagan-National
3h 58m
DEN8:58 amDenver Intl
Frontier
Aug 27
DEN6:45 amDenver Intl
3h 26m
DCA12:11 pmWashington, D.C. Reagan-National
Sep 3
DCA1:00 pmWashington, D.C. Reagan-National
3h 59m
DEN2:59 pmDenver Intl

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Washington, D.C. 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, momondo users made 832,500 searches. Data last updated August 7, 2025.
Use the filters below to find and compare flights from Colorado to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 9/9

11:25 am-4:59 pm

Nonstop3h 34m

Washington, D.C. Reagan-National

Tue 9/16

6:00 pm-7:58 pm

Nonstop3h 58m

$96

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 9/9

11:25 am-4:59 pm

Nonstop3h 34m

Washington, D.C. Reagan-National

Tue 9/16

7:00 am-8:58 am

Nonstop3h 58m

$105

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 8/27

6:45 am-12:11 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Wed 9/3

1:00 pm-2:59 pm

Nonstop3h 59m

$106

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 8/30

5:30 pm-10:50 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Tue 9/2

5:45 am-7:20 am

Nonstop3h 35m

$157

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Sat 10/18

2:00 pm-7:27 pm

Nonstop3h 27m

Baltimore/Washington

Tue 10/21

8:32 am-10:28 am

Nonstop3h 56m

$157

Colorado SpringsBaltimore

COS - BWI

COSBWI

Colorado Springs

Wed 10/22

12:30 pm-11:10 pm

1 stop8h 40m

Baltimore/Washington

Tue 10/28

10:55 am-5:35 pm

1 stop8h 40m

$160

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Tue 9/9

6:02 am-4:50 pm

1 stop8h 48m

Washington, D.C. Dulles Intl

Wed 9/10

5:40 pm-10:08 pm

1 stop6h 28m

$161

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

Sat 9/20

5:16 pm-1:00 am

1 stop5h 44m

Washington, D.C. Reagan-National

Sat 9/27

6:30 am-11:51 am

1 stop7h 21m

$161

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 9/13

8:00 am-1:26 pm

Nonstop3h 26m

Washington, D.C. Dulles Intl

Sat 9/13

10:14 pm-11:59 pm

Nonstop3h 45m

$165

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Thu 9/11

5:43 pm-9:33 am

1 stop13h 50m

Baltimore/Washington

Sun 9/14

6:27 pm-8:29 pm

Nonstop4h 02m

$215

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Colorado to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C.?

The month of August is, on average, the cheapest month to fly to Washington, D.C. from Colorado, with most prices found around $228. If you’re not able to fly to Washington, D.C. in August, then September is your next best option. Flight prices from Colorado to Washington, D.C. during September average around $228.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Colorado is on a Friday. momondo users have found tickets for Friday departures for as low as $320. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to Washington, D.C. for around $427.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the morning is the cheapest time of day to fly from Colorado to Washington, D.C. when you can find flight prices for as low as $314. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $602. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Colorado to Washington, D.C. flight route?

Fly from Denver Intl to Washington, D.C. Reagan-National for the best Colorado - Washington, D.C. flight prices

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $308 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Colorado for as low as $232 on momondo.

What cabin class options are available on Colorado to Washington, D.C. flights?

There are 4 cabin classes available to choose from on Colorado to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Colorado to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Washington, D.C.

Best Price Found

$52

Fastest flight time

3h 10m

Direct flights

Every day

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from Colorado in the past 72 hours is $52. The best round-trip flight deal from Colorado to Washington, D.C. found on momondo in the last 72 hours is $96.
The fastest flight from Colorado to Washington, D.C. takes 3h 10m
Direct flights go from Colorado to Washington, D.C. every day.
There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)
  • When did momondo last update prices for flights from Colorado to Washington, D.C.?

    Prices for flights from Colorado to Washington, D.C. are refreshed on a daily basis.

  • How many operators does momondo search for flights from Colorado to Washington, D.C.?

  • How old do you have to be to fly from Colorado to Washington, D.C.?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Colorado to Washington, D.C.?

Best airlines flying from Colorado to Washington, D.C.

Compare and see reviews for airlines that fly from Colorado to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $100Free CancellationRating
5.8
3,231 reviews
Search Frontier flights
DeltaPriceFrom $144Free CancellationRating
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $166Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $171Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
SouthwestPriceFrom $180Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Woodbridge
Laurel
Silver Spring
Tysons
Waldorf
Fredericksburg
Colonial Beach
Manassas
Rockville
Towson
Gaithersburg
Fairfax
Reston
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Colorado to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Colorado to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Colorado to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Colorado to Washington, D.C.?

momondo helps you find the best flight between Colorado and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Colorado to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Colorado to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Tue 8/12
Tue 8/19

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.