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

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

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

The number of flights available between Washington, D.C. and Colorado is 246 per week as of March 2026. The most frequent departure day is Tue, with 20% of weekly flights leaving on this day.

What airlines fly to Colorado?

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Colorado from Washington, D.C. according to our data. Frontier is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 6 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

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

35 flights are operational daily from Washington, D.C. to Colorado as of March 2026. The most popular departure time for this route is 4:00PM, with 44% of flights per day taking off in the afternoon.

How long is the flight from Washington, D.C. to Colorado?

Flight times from Washington, D.C. to Colorado vary, but if you’re flying out of Baltimore and flying into Denver (one of the most popular routes), then the duration is 3h 45m on average. Another popular route from Washington, D.C. to Colorado is flying from Washington, D.C. to Denver, which will take roughly 3h 50m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Washington, D.C. to Colorado?

Prices for flights from Washington, D.C. to Colorado are updated daily.

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

The number of operators available for flights from Washington, D.C. to Colorado is 6 as of March 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Colorado.

What documentation or ID do you need to fly to Colorado?

The travel and health documents you'll need for your trip to Colorado may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Colorado. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$68 Cheap Flights from Washington, D.C. to Colorado in 2026

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:59 am - 10:11 am

DCA

DEN

4h 12mnonstop

4:27 pm - 9:58 pm

DEN

DCA

3h 31mnonstop

$156Frontier

Mon, Apr 27 - Fri, May 8

5:26 pm - 10:24 pm

IAD

DEN

30h 58m

1 stop

11:54 pm - 10:12 am

DEN

IAD

8h 18m

1 stop

$158Frontier

Tue, May 12 - Tue, May 19

4:34 pm - 9:31 pm

DCA

COS

6h 57m

1 stop

12:10 pm - 10:15 pm

COS

DCA

8h 05m

1 stop

$235United Airlines

Sat, Apr 25 - Sat, May 2

7:06 am - 12:17 pm

IAD

COS

7h 11m

1 stop

1:14 pm - 8:52 pm

COS

IAD

5h 38m

1 stop

$235Delta

Tue, Apr 28 - Tue, May 5

6:10 am - 1:40 pm

DCA

COS

9h 30m

2 stops

11:25 am - 8:45 pm

COS

DCA

7h 20m

1 stop

$240Southwest

Sat, Apr 25 - Sat, May 2

6:10 am - 1:40 pm

DCA

COS

9h 30m

2 stops

9:50 am - 8:45 pm

COS

DCA

8h 55m

2 stops

$245Southwest

Sat, Apr 25 - Sat, May 2

5:59 pm - 10:25 pm

IAD

COS

6h 26m

1 stop

1:39 pm - 11:06 pm

COS

IAD

7h 27m

2 stops

$292American Airlines

Tue, Apr 28 - Tue, May 5

4:18 pm - 8:02 pm

BWI

COS

5h 44m

1 stop

3:25 pm - 11:27 pm

COS

BWI

6h 02m

1 stop

$317United Airlines

Sat, Apr 25 - Sat, May 2

5:30 pm - 12:16 am

DCA

GJT

8h 46m

1 stop

7:16 pm - 7:05 am

GJT

DCA

9h 49m

1 stop

$349American Airlines

Sat, Sep 19 - Wed, Sep 23

9:35 am - 6:35 pm

DCA

GJT

11h 00m

2 stops

7:45 am - 4:00 pm

GJT

DCA

6h 15m

1 stop

$354Delta

Sat, Apr 25 - Sat, May 2

Frontier flights from Washington, D.C. to Colorado

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

Frontier

Apr 13

DCA6:00 pmWashington, D.C. Reagan-National

4h 11m

DEN8:11 pmDenver Intl

Apr 15

DEN4:36 pmDenver Intl

3h 23m

DCA9:59 pmWashington, D.C. Reagan-National

$154

Frontier

Apr 27

DCA7:59 amWashington, D.C. Reagan-National

4h 12m

DEN10:11 amDenver Intl

May 8

DEN4:27 pmDenver Intl

3h 31m

DCA9:58 pmWashington, D.C. Reagan-National

$156

Frontier

May 12

IAD11:07 amWashington, D.C. Dulles Intl

13h 17m

1 stop

DEN10:24 pmDenver Intl

May 19

DEN11:54 pmDenver Intl

8h 18m

1 stop

IAD10:12 amWashington, D.C. Dulles Intl

$158

Southwest flights from Washington, D.C. to Colorado

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

Southwest

Apr 25

IAD5:50 amWashington, D.C. Dulles Intl

3h 50m

DEN7:40 amDenver Intl

May 2

DEN11:10 amDenver Intl

3h 15m

IAD4:25 pmWashington, D.C. Dulles Intl

$215

Southwest

Apr 25

DCA6:10 amWashington, D.C. Reagan-National

9h 30m

2 stops

COS1:40 pmColorado Springs

May 2

COS11:25 amColorado Springs

7h 20m

1 stop

DCA8:45 pmWashington, D.C. Reagan-National

$240

Southwest

Apr 25

DCA6:10 amWashington, D.C. Reagan-National

9h 30m

2 stops

COS1:40 pmColorado Springs

May 2

COS9:50 amColorado Springs

8h 55m

2 stops

DCA8:45 pmWashington, D.C. Reagan-National

$245

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Mon 4/27

7:59 am-10:11 am

Nonstop4h 12m

Denver Intl

Fri 5/8

4:27 pm-9:58 pm

Nonstop3h 31m

$156

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 5/12

5:26 pm-10:24 pm

1 stop30h 58m

Denver Intl

Tue 5/19

11:54 pm-10:12 am

1 stop8h 18m

$158

Washington, D.C.Colorado Springs

DCA - COS

DCACOS

Washington, D.C. Reagan-National

Sat 4/25

4:34 pm-9:31 pm

1 stop6h 57m

Colorado Springs

Sat 5/2

12:10 pm-10:15 pm

1 stop8h 05m

$235

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 4/28

7:06 am-12:17 pm

1 stop7h 11m

Colorado Springs

Tue 5/5

1:14 pm-8:52 pm

1 stop5h 38m

$235

Washington, D.C.Colorado Springs

DCA - COS

DCACOS

Washington, D.C. Reagan-National

Sat 4/25

6:10 am-1:40 pm

2 stops9h 30m

Colorado Springs

Sat 5/2

11:25 am-8:45 pm

1 stop7h 20m

$240

Washington, D.C.Colorado Springs

DCA - COS

DCACOS

Washington, D.C. Reagan-National

Sat 4/25

6:10 am-1:40 pm

2 stops9h 30m

Colorado Springs

Sat 5/2

9:50 am-8:45 pm

2 stops8h 55m

$245

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 4/28

5:59 pm-10:25 pm

1 stop6h 26m

Colorado Springs

Tue 5/5

1:39 pm-11:06 pm

2 stops7h 27m

$292

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

Sat 4/25

4:18 pm-8:02 pm

1 stop5h 44m

Colorado Springs

Sat 5/2

3:25 pm-11:27 pm

1 stop6h 02m

$317

Washington, D.C.Grand Junction

DCA - GJT

DCAGJT

Washington, D.C. Reagan-National

Sat 9/19

5:30 pm-12:16 am

1 stop8h 46m

Grand Junction Regnl

Wed 9/23

7:16 pm-7:05 am

1 stop9h 49m

$349

Washington, D.C.Grand Junction

DCA - GJT

DCAGJT

Washington, D.C. Reagan-National

Sat 4/25

9:35 am-6:35 pm

2 stops11h 00m

Grand Junction Regnl

Sat 5/2

7:45 am-4:00 pm

1 stop6h 15m

$354

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 Washington, D.C. to Colorado

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 Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Washington, D.C., with most prices found around $237. The month of February is another great option to travel to Colorado, with average flight prices from Washington, D.C. averaging around $246.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Washington, D.C. to Colorado is on a Wednesday when prices can be found for as low as $394. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $501.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $373. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $464 per ticket.

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

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

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $348 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Washington, D.C. for as low as $281 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. to Colorado 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 Washington, D.C. to Colorado flights?

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

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

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

Best Price Found	$124
Fastest flight time	3h 45m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from Washington, D.C. in the past 72 hours is $124. The best round-trip flight deal from Washington, D.C. to Colorado found on momondo in the last 72 hours is $234.

The fastest flight from Washington, D.C. to Colorado takes 3h 45m

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

There are 87 airports in Colorado. From Washington, D.C. there are direct flights to Denver Intl (DEN).

Search flight deals

When did momondo last update prices for flights from Washington, D.C. to Colorado?
Prices for flights from Washington, D.C. to Colorado are updated daily.
How many operators does momondo search for flights from Washington, D.C. to Colorado?
The number of operators available for flights from Washington, D.C. to Colorado is 6 as of March 2026.
How old do you have to be to fly from Washington, D.C. to Colorado?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Colorado.
What documentation or ID do you need to fly to Colorado?
The travel and health documents you'll need for your trip to Colorado may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Colorado. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to Colorado?
Based on momondo bookings for flights between Washington, D.C. and Colorado, the leading plane model is Boeing 737 MAX 8, making up 17.22% of the total bookings. Other popular models include Boeing 737-900 with 13.83%, Airbus A321neo with 12.77%, and Airbus A320neo with 11.99%.

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

Compare and see reviews for airlines that fly from Washington, D.C. to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $94	Free Cancellation	Rating 5.7 3,009 reviews	Search Frontier flights
JetBlue	PriceFrom $113	Free Cancellation	Rating 7.2 2,906 reviews	Search JetBlue flights
Delta	PriceFrom $118	Free Cancellation	Rating 7.9 8,360 reviews	Search Delta flights
American Airlines	PriceFrom $160	Free Cancellation	Rating 7.1 11,533 reviews	Search American Airlines flights
Southwest	PriceFrom $177	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights
United Airlines	PriceFrom $210	Free Cancellation	Rating 7.4 9,520 reviews	Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Colorado. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Colorado from Washington, D.C..

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

Yes momondo offers price alerts on flights to Colorado from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Flights to New Yorkfrom $48

Flights to Los Angelesfrom $53

Flights to Orlandofrom $55

Flights to Miamifrom $55

Flights to Chicagofrom $59

Flights to San Franciscofrom $68

Flights to Las Vegasfrom $54

Flights to Washington, D.C.from $56

Flights to Bostonfrom $76

Flights to Atlantafrom $50

Flights to Dallasfrom $55

Flights to Fort Lauderdalefrom $56

Cheap flights from Washington, D.C. to Colorado from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Colorado departing on 4/15. 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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Frontier flights from Washington, D.C. to Colorado

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

What is the cheapest month to fly to Colorado?

What is the cheapest day to depart on your flight to Colorado?

What is the cheapest time of day to depart on your flight to Colorado?

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

How far in advance should I book a flight to Colorado?

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

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

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

What airlines fly to Colorado?

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

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

How long is the flight from Washington, D.C. to Colorado?

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

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

Compare and see reviews for airlines that fly from Washington, D.C. to Colorado with momondo

Why use momondo?

An easier way to manage your Colorado trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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Find better results for your trip to Colorado

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