What airlines fly to Colorado?

Frontier, United Airlines and American Airlines are the top three most popular airlines that fly to Colorado from Washington, D.C. Reagan-National Airport according to our data. Frontier is the first choice among our users, with 79% 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.

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

Delta, JetBlue, and American Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Colorado

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

As of December 2025, there are 6 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Colorado.

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

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 Washington, D.C. Reagan-National Airport to Colorado.

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

The travel and health documents required for your trip to Colorado can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Colorado. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$59 Cheap Flights from Washington, D.C. Reagan-National Airport to Colorado in 2025/26

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Colorado on average per week?

As of December 2025, there are 31 flights per week flying from Washington, D.C. Reagan-National Airport to Colorado. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Colorado on average per day?

The number of flights available between Washington, D.C. Reagan-National Airport and Colorado is 4 per day as of December 2025. The most frequent departure time is 4:00PM, with 67% of daily flights leaving in the afternoon.

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 10:13 am

DCA

DEN

4h 13mnonstop

4:38 pm - 9:59 pm

DEN

DCA

3h 21mnonstop

$136Frontier

Fri, Feb 13 - Sat, Feb 14

8:00 am - 10:22 am

DCA

DEN

4h 22mnonstop

4:38 pm - 9:59 pm

DEN

DCA

3h 21mnonstop

$138Frontier

Mon, Feb 23 - Fri, Feb 27

6:00 am - 1:08 pm

DCA

MTJ

9h 08m1 stop

2:05 pm - 11:32 pm

MTJ

DCA

7h 27m1 stop

$249Delta

Wed, Jan 21 - Wed, Jan 28

6:05 am - 11:45 am

DCA

HDN

7h 40m2 stops

12:40 pm - 8:30 pm

HDN

DCA

5h 50m1 stop

$262Southwest

Tue, Jan 27 - Sat, Jan 31

6:05 am - 11:45 am

DCA

HDN

7h 40m2 stops

9:55 am - 7:30 pm

HDN

DCA

7h 35m2 stops

$267Southwest

Tue, Jan 27 - Sat, Jan 31

4:11 pm - 8:16 pm

DCA

HDN

6h 05m1 stop

11:45 am - 9:52 pm

HDN

DCA

8h 07m1 stop

$277United Airlines

Tue, Jan 27 - Sat, Jan 31

6:00 am - 1:08 pm

DCA

MTJ

9h 08m1 stop

2:05 pm - 9:34 pm

MTJ

DCA

5h 29m1 stop

$284Delta

Mon, Jan 5 - Sat, Jan 10

6:30 am - 12:19 pm

DCA

HDN

7h 49m1 stop

1:19 pm - 10:56 pm

HDN

DCA

7h 37m1 stop

$287American Airlines

Tue, Jan 27 - Sat, Jan 31

7:00 am - 2:18 pm

DCA

ASE

9h 18m1 stop

2:48 pm - 11:59 pm

ASE

DCA

7h 11m1 stop

$289American Airlines

Sat, Jan 10 - Sat, Jan 17

6:00 am - 2:37 pm

DCA

MTJ

10h 37m2 stops

12:45 pm - 8:59 pm

MTJ

DCA

6h 14m1 stop

$294United Airlines

Tue, Feb 17 - Fri, Feb 20

Frontier flights from Washington, D.C. Reagan-National Airport to Colorado

Our best Frontier deals on Washington, D.C. Reagan-National Airport to Colorado flight tickets

Frontier

Feb 13

DCA8:00 amWashington, D.C. Reagan-National

4h 13m

DEN10:13 amDenver Intl

Feb 14

DEN4:38 pmDenver Intl

3h 21m

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

$136

Find similar

Frontier

Feb 23

DCA8:00 amWashington, D.C. Reagan-National

4h 22m

DEN10:22 amDenver Intl

Feb 27

DEN4:38 pmDenver Intl

3h 21m

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

$138

Find similar

Frontier

Feb 23

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

4h 12m

DEN8:12 pmDenver Intl

Feb 27

DEN7:40 amDenver Intl

3h 25m

DCA1:05 pmWashington, D.C. Reagan-National

$141

Find similar

JetBlue flights from Washington, D.C. Reagan-National Airport to Colorado

Our best JetBlue deals on Washington, D.C. Reagan-National Airport to Colorado flight tickets

JetBlue

Dec 17

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

7h 05m

1 stop

DEN11:05 amDenver Intl

Jan 5

DEN10:40 pmDenver Intl

9h 11m

1 stop

DCA9:51 amWashington, D.C. Reagan-National

$293

Find similar

JetBlue

Dec 17

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

7h 05m

1 stop

DEN11:05 amDenver Intl

Jan 7

DEN11:35 amDenver Intl

9h 24m

1 stop

DCA10:59 pmWashington, D.C. Reagan-National

$312

Find similar

JetBlue

Dec 16

DCA7:30 amWashington, D.C. Reagan-National

7h 05m

1 stop

DEN12:35 pmDenver Intl

Jan 5

DEN10:40 pmDenver Intl

9h 11m

1 stop

DCA9:51 amWashington, D.C. Reagan-National

$322

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Fri 2/13

8:00 am-10:13 am

Nonstop4h 13m

Denver Intl

Sat 2/14

4:38 pm-9:59 pm

Nonstop3h 21m

$136

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Mon 2/23

8:00 am-10:22 am

Nonstop4h 22m

Denver Intl

Fri 2/27

4:38 pm-9:59 pm

Nonstop3h 21m

$138

Washington, D.C.Montrose

DCA - MTJ

DCAMTJ

Washington, D.C. Reagan-National

Wed 1/21

6:00 am-1:08 pm

1 stop9h 08m

Montrose County

Wed 1/28

2:05 pm-11:32 pm

1 stop7h 27m

$249

Washington, D.C.Hayden

DCA - HDN

DCAHDN

Washington, D.C. Reagan-National

Tue 1/27

6:05 am-11:45 am

2 stops7h 40m

Hayden Yampa Valley

Sat 1/31

12:40 pm-8:30 pm

1 stop5h 50m

$262

Washington, D.C.Hayden

DCA - HDN

DCAHDN

Washington, D.C. Reagan-National

Tue 1/27

6:05 am-11:45 am

2 stops7h 40m

Hayden Yampa Valley

Sat 1/31

9:55 am-7:30 pm

2 stops7h 35m

$267

Washington, D.C.Hayden

DCA - HDN

DCAHDN

Washington, D.C. Reagan-National

Tue 1/27

4:11 pm-8:16 pm

1 stop6h 05m

Hayden Yampa Valley

Sat 1/31

11:45 am-9:52 pm

1 stop8h 07m

$277

Washington, D.C.Montrose

DCA - MTJ

DCAMTJ

Washington, D.C. Reagan-National

Mon 1/5

6:00 am-1:08 pm

1 stop9h 08m

Montrose County

Sat 1/10

2:05 pm-9:34 pm

1 stop5h 29m

$284

Washington, D.C.Hayden

DCA - HDN

DCAHDN

Washington, D.C. Reagan-National

Tue 1/27

6:30 am-12:19 pm

1 stop7h 49m

Hayden Yampa Valley

Sat 1/31

1:19 pm-10:56 pm

1 stop7h 37m

$287

Washington, D.C.Aspen

DCA - ASE

DCAASE

Washington, D.C. Reagan-National

Sat 1/10

7:00 am-2:18 pm

1 stop9h 18m

Aspen Pitkin County

Sat 1/17

2:48 pm-11:59 pm

1 stop7h 11m

$289

Washington, D.C.Montrose

DCA - MTJ

DCAMTJ

Washington, D.C. Reagan-National

Tue 2/17

6:00 am-2:37 pm

2 stops10h 37m

Montrose County

Fri 2/20

12:45 pm-8:59 pm

1 stop6h 14m

$294

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. Reagan-National Airport 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. Reagan-National Airport, with most prices found around $216. The month of September is another great option to travel to Colorado, with average flight prices from Washington, D.C. Reagan-National Airport averaging around $219.

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

The cheapest day to depart from Washington, D.C. Reagan-National Airport to Colorado is on a Saturday when prices can be found for as low as $243. On the other hand, Thursday is the most expensive day to depart from Washington, D.C. Reagan-National Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $276.

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

The cheapest time of day to fly to Colorado is at noon when flights can be purchased for as low as $248. In the evening is when there is more demand to fly to Colorado, so prices are often more expensive at around $358 per ticket.

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

Fly from Washington, D.C. Reagan-National to Denver Intl for the best Washington, D.C. Reagan-National - 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. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $264 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. Reagan-National Airport for as low as $210 on momondo.

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

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

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

Cheap Washington, D.C. Reagan-National Airport to Colorado flight deals and tips

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

Best Price Found	$107
Fastest flight time	4h 00m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from Washington, D.C. Reagan-National Airport in the past 72 hours is $107. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Colorado found on momondo in the last 72 hours is $177.

The fastest flight from Washington, D.C. Reagan-National Airport to Colorado takes 4h 00m

Direct flights go from Washington, D.C. Reagan-National Airport to Colorado every day.

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

Search flight deals

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Colorado?
Prices for flights from Washington, D.C. Reagan-National Airport to Colorado refresh daily.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Colorado?
As of December 2025, there are 6 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Colorado.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Colorado?
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 Washington, D.C. Reagan-National Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The travel and health documents required for your trip to Colorado can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Colorado. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. Reagan-National Airport to Colorado?
Based on momondo bookings for flights between Washington, D.C. Reagan-National Airport and Colorado, the leading plane model is Boeing 737 MAX 8, making up 15.07% of the total bookings. Other popular models include Airbus A320neo with 13.66%, Boeing 737-800 Passenger/BBJ2 (winglets) with 11.31%, and Boeing 737-900 with 11.30%.

Best airlines flying from Washington, D.C. Reagan-National Airport to Colorado

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $117	Free Cancellation	Rating 5.8 3,084 reviews	Search Frontier flights
JetBlue	PriceFrom $128	Free Cancellation	Rating 7.2 2,899 reviews	Search JetBlue flights
Delta	PriceFrom $189	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
United Airlines	PriceFrom $224	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Southwest	PriceFrom $228	Free Cancellation	Rating 7.9 4,253 reviews	Search Southwest flights

Why use momondo?

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

Finding the right flight to Colorado from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Colorado quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Colorado from Washington, D.C. with this policy.

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

momondo helps you find the best flight between Washington, D.C. and Colorado 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 Washington, D.C. to Colorado right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Colorado flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in Colorado

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Washington, D.C. Reagan-National Airport flight routes

Flights from Washington, D.C. Reagan-National to Denver Intl

Flights from Washington, D.C. Reagan-National to Orlando

Flights from Washington, D.C. Reagan-National to Boston Logan Intl

Flights from Washington, D.C. Reagan-National to New York LaGuardia

Flights from Washington, D.C. Reagan-National to Fort Lauderdale

Flights from Washington, D.C. Reagan-National to New York John F Kennedy Intl

Cheap flights from Washington, D.C. Reagan-National Airport to Colorado from $84

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Colorado

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Frontier flights from Washington, D.C. Reagan-National Airport to Colorado

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Our best JetBlue deals on Washington, D.C. Reagan-National Airport to Colorado flight tickets

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Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Colorado that are best for you.

See travel insights to Colorado from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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?

The cheapest time of day to fly to Colorado is at noon when flights can be purchased for as low as $248. In the evening is when there is more demand to fly to Colorado, so prices are often more expensive at around $358 per ticket.

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

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

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

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

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

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

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

Delta, JetBlue, and American Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Colorado

What airlines fly to Colorado?

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

The number of flights available between Washington, D.C. Reagan-National Airport and Colorado is 4 per day as of December 2025. The most frequent departure time is 4:00PM, with 67% of daily flights leaving in the afternoon.

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

As of December 2025, there are 31 flights per week flying from Washington, D.C. Reagan-National Airport to Colorado. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.

Cheap Washington, D.C. Reagan-National Airport to Colorado flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

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

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

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

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

What is the most popular plane model from Washington, D.C. Reagan-National Airport to Colorado?

Best airlines flying from Washington, D.C. Reagan-National Airport to Colorado

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

Why use momondo?

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

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

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

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

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

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Colorado

Popular cities in Colorado

Popular flights according to clicks in the last 7 days on momondo