What airlines fly to Washington, D.C.?

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Washington, D.C. from Colorado according to our data. Frontier is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

How many flights depart from Colorado to Washington, D.C. on average per day?

33 flights are operational daily from Colorado to Washington, D.C. as of June 2026. The most popular departure time for this route is 8:00AM, with 55% of flights per day taking off at noon.

How many flights depart from Colorado to Washington, D.C. on average per week?

As of June 2026, there are 233 flights per week flying from Colorado to Washington, D.C.. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.

How long does it take to fly to Washington, D.C.?

Flight times from Colorado to Washington, D.C. vary, but if you’re flying out of Denver and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 3h 18m on average. Another popular route from Colorado to Washington, D.C. is flying from Colorado Springs to Washington, D.C. Dulles Intl Airport, which will take roughly 5h 35m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Colorado to Washington, D.C.?

Frontier, United Airlines, and Delta are the most popular carriers operating from Colorado to Washington, D.C.

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.?

As of June 2026, there are 5 operators available to choose from 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.

$136 Cheap Flights from Colorado to Washington, D.C. in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:05 am - 1:40 pm

DEN

BWI

6h 35m

1 stop

9:37 pm - 9:03 am

BWI

DEN

13h 26m

1 stop

$270Frontier

Sun, Aug 9 - Wed, Aug 12

5:05 am - 1:40 pm

DEN

BWI

6h 35m

1 stop

4:44 pm - 11:58 pm

BWI

DEN

9h 14m

1 stop

$271Frontier

Wed, Jul 29 - Sun, Aug 2

11:37 pm - 10:10 am

DEN

DCA

8h 33m

1 stop

7:00 am - 9:01 am

DCA

DEN

4h 01mnonstop

$300Multiple Airlines

Mon, Aug 3 - Thu, Aug 6

2:04 pm - 10:59 pm

DEN

DCA

6h 55m

1 stop

6:10 am - 1:11 pm

DCA

DEN

9h 01m

1 stop

$301JetBlue

Tue, Aug 11 - Wed, Aug 12

11:37 pm - 12:00 pm

DEN

DCA

10h 23m

1 stop

7:00 am - 9:01 am

DCA

DEN

4h 01mnonstop

$302Multiple Airlines

Fri, Aug 28 - Sun, Aug 30

2:09 pm - 10:59 pm

DEN

DCA

6h 50m

1 stop

2:15 pm - 10:42 pm

DCA

DEN

10h 27m

1 stop

$307JetBlue

Wed, Aug 5 - Sat, Aug 22

10:23 am - 5:58 pm

COS

IAD

5h 35m

1 stop

6:15 am - 10:33 am

IAD

COS

6h 18m

1 stop

$333United Airlines

Wed, Aug 5 - Wed, Aug 12

3:51 pm - 11:58 pm

COS

DCA

6h 07m

1 stop

5:00 am - 9:18 am

DCA

COS

6h 18m

1 stop

$333American Airlines

Wed, Sep 2 - Tue, Sep 8

12:11 pm - 9:10 pm

COS

DCA

6h 59m

1 stop

5:10 pm - 9:54 pm

DCA

COS

6h 44m

1 stop

$354United Airlines

Thu, Aug 6 - Sat, Aug 15

10:31 am - 8:24 pm

ASE

IAD

7h 53m

1 stop

6:52 am - 12:21 pm

IAD

ASE

7h 29m

1 stop

$355American Airlines

Fri, Sep 11 - Sun, Sep 13

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American Airlines flights from Colorado to Washington, D.C.

Our best American Airlines deals on Colorado to Washington, D.C. flight tickets

American Airlines

Jul 14

DEN11:59 pmDenver Intl

6h 50m

1 stop

IAD8:49 amWashington, D.C. Dulles Intl

Jul 21

IAD5:03 amWashington, D.C. Dulles Intl

6h 07m

1 stop

DEN9:10 amDenver Intl

$333

American Airlines

Sep 11

ASE10:31 amAspen Pitkin County

7h 53m

1 stop

IAD8:24 pmWashington, D.C. Dulles Intl

Sep 13

IAD6:52 amWashington, D.C. Dulles Intl

7h 29m

1 stop

ASE12:21 pmAspen Pitkin County

$355

American Airlines

Jul 21

COS3:41 pmColorado Springs

6h 18m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

Jul 28

DCA5:00 amWashington, D.C. Reagan-National

6h 52m

1 stop

COS9:52 amColorado Springs

$366

United Airlines flights from Colorado to Washington, D.C.

Our best United Airlines deals on Colorado to Washington, D.C. flight tickets

United Airlines

Jul 15

DEN4:29 pmDenver Intl

5h 59m

1 stop

BWI12:28 amBaltimore/Washington

Jul 21

BWI4:23 pmBaltimore/Washington

3h 55m

DEN6:18 pmDenver Intl

$319

United Airlines

Aug 5

COS10:23 amColorado Springs

5h 35m

1 stop

IAD5:58 pmWashington, D.C. Dulles Intl

Aug 12

IAD6:15 amWashington, D.C. Dulles Intl

6h 18m

1 stop

COS10:33 amColorado Springs

$333

United Airlines

Aug 6

COS12:11 pmColorado Springs

6h 59m

1 stop

DCA9:10 pmWashington, D.C. Reagan-National

Aug 15

DCA5:10 pmWashington, D.C. Reagan-National

6h 44m

1 stop

COS9:54 pmColorado Springs

$354

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Sun 8/9

5:05 am-1:40 pm

1 stop6h 35m

Baltimore/Washington

Wed 8/12

9:37 pm-9:03 am

1 stop13h 26m

$270

DenverBaltimore

DEN - BWI

DENBWI

Denver Intl

Wed 7/29

5:05 am-1:40 pm

1 stop6h 35m

Baltimore/Washington

Sun 8/2

4:44 pm-11:58 pm

1 stop9h 14m

$271

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Mon 8/3

11:37 pm-10:10 am

1 stop8h 33m

Washington, D.C. Reagan-National

Thu 8/6

7:00 am-9:01 am

Nonstop4h 01m

$300

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 8/11

2:04 pm-10:59 pm

1 stop6h 55m

Washington, D.C. Reagan-National

Wed 8/12

6:10 am-1:11 pm

1 stop9h 01m

$301

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 8/28

11:37 pm-12:00 pm

1 stop10h 23m

Washington, D.C. Reagan-National

Sun 8/30

7:00 am-9:01 am

Nonstop4h 01m

$302

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 8/5

2:09 pm-10:59 pm

1 stop6h 50m

Washington, D.C. Reagan-National

Sat 8/22

2:15 pm-10:42 pm

1 stop10h 27m

$307

Quickest round-trip

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Wed 8/5

10:23 am-5:58 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

Wed 8/12

6:15 am-10:33 am

1 stop6h 18m

$333

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

Wed 9/2

3:51 pm-11:58 pm

1 stop6h 07m

Washington, D.C. Reagan-National

Tue 9/8

5:00 am-9:18 am

1 stop6h 18m

$333

Colorado SpringsWashington, D.C.

COS - DCA

COSDCA

Colorado Springs

Thu 8/6

12:11 pm-9:10 pm

1 stop6h 59m

Washington, D.C. Reagan-National

Sat 8/15

5:10 pm-9:54 pm

1 stop6h 44m

$354

AspenWashington, D.C.

ASE - IAD

ASEIAD

Aspen Pitkin County

Fri 9/11

10:31 am-8:24 pm

1 stop7h 53m

Washington, D.C. Dulles Intl

Sun 9/13

6:52 am-12:21 pm

1 stop7h 29m

$355

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $88. If you’re not able to fly to Washington, D.C. in August, then October is your next best option. Flight prices from Colorado to Washington, D.C. during October average around $305.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $351. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to Washington, D.C. for around $503.

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 $370. 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 $738. 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 from Colorado 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 $389 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 $320 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.

Can stopping save me money on Colorado to Washington, D.C. flights?

No. A direct flight is the cheapest option for a flight between Colorado to Washington, D.C..

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	$212
Fastest flight time	3h 15m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from Colorado in the past 72 hours is $212. The best round-trip flight deal from Colorado to Washington, D.C. found on momondo in the last 72 hours is $379.

The fastest flight from Colorado to Washington, D.C. takes 3h 15m

Direct flights go from Colorado to Washington, D.C. every day.

There are 2 airports in Washington, D.C.. From Colorado there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).

Search flight deals

Frequently asked questions about flying from Colorado to Washington, D.C.

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.?
As of June 2026, there are 5 operators available to choose from 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.?
momondo data reveals that the most frequently booked plane model on the route from Colorado to Washington, D.C. is Airbus A321neo, representing 16.16% of all bookings. The subsequent popular models are Airbus A320neo at 15.74%, Boeing 737 MAX 8 at 14.58%, and Boeing 737-900 at 13.54%.

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
Frontier	PriceFrom $103	Free Cancellation	Rating 5.6 2,870 reviews	Search Frontier flights
Delta	PriceFrom $143	Free Cancellation	Rating 7.8 8,424 reviews	Search Delta flights
Southwest	PriceFrom $177	Free Cancellation	Rating 7.9 4,242 reviews	Search Southwest flights
American Airlines	PriceFrom $186	Free Cancellation	Rating 7.1 11,745 reviews	Search American Airlines flights
United Airlines	PriceFrom $197	Free Cancellation	Rating 7.4 9,875 reviews	Search United Airlines flights

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Colonial Beach

Linthicum Heights

Rockville

Silver Spring

Towson

Manassas

Tysons

Springfield

Fairfax

Bethesda

Glen Burnie

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

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Washington, D.C. Dulles Intl Airport

Cheap flights from Colorado to Washington, D.C. from $136

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 7/21. 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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American Airlines flights from Colorado to Washington, D.C.

Our best American Airlines deals on Colorado to Washington, D.C. flight tickets

United Airlines flights from Colorado to Washington, D.C.

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

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

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

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

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

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

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

Can stopping save me money on Colorado to Washington, D.C. flights?

What is the cheapest airline that flies from Colorado to Washington, D.C.?

What airlines fly to Washington, D.C.?

How many flights depart from Colorado to Washington, D.C. on average per day?

How many flights depart from Colorado to Washington, D.C. on average per week?

How long does it take to fly to Washington, D.C.?

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

Fastest flight time

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying 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

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

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An easier way to manage your Washington, D.C. trip

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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.

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Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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