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

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

What airlines fly to Colorado?

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Colorado from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 40% 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?

40 flights are operational daily from Washington, D.C. to Colorado as of July 2026. The most popular departure time for this route is 5:00PM, with 53% 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 49m. Keep in mind that layovers or delays could extend your travel time.

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 283 per week as of July 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

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 July 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.

$73 Cheap Flights from Washington, D.C. to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

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.

11:35 am - 3:40 pm

BWI

COS

6h 05m

1 stop

1:15 pm - 8:10 pm

COS

BWI

4h 55m

1 stop

$258Southwest

Mon, Aug 24 - Tue, Sep 1

2:00 pm - 7:56 pm

DCA

COS

7h 56m

1 stop

1:25 pm - 10:38 pm

COS

DCA

7h 13m

1 stop

$261Delta

Mon, Sep 21 - Wed, Sep 30

9:32 pm - 8:03 pm

BWI

DEN

24h 31m

2 stops

6:59 pm - 2:26 pm

DEN

BWI

17h 27m

1 stop

$278Frontier

Sun, Aug 9 - Fri, Aug 14

9:20 pm - 12:24 pm

BWI

DEN

17h 04m

2 stops

11:59 pm - 8:29 am

DEN

BWI

6h 30m

1 stop

$279Frontier

Wed, Sep 9 - Wed, Sep 16

5:26 pm - 7:30 pm

IAD

DEN

4h 04mnonstop

11:59 pm - 5:25 am

DEN

IAD

3h 26mnonstop

$309United Airlines

Sat, Aug 15 - Tue, Aug 18

4:40 pm - 10:42 pm

DCA

DEN

8h 02m

1 stop

11:37 pm - 10:02 am

DEN

DCA

8h 25m

1 stop

$313JetBlue

Sat, Sep 5 - Tue, Sep 8

6:10 am - 1:11 pm

DCA

DEN

9h 01m

1 stop

11:37 pm - 7:58 am

DEN

DCA

6h 21m

1 stop

$315JetBlue

Sat, Aug 29 - Sun, Aug 30

6:15 am - 10:47 am

IAD

COS

6h 32m

1 stop

8:00 am - 4:01 pm

COS

IAD

6h 01m

1 stop

$320United Airlines

Tue, Sep 15 - Tue, Sep 22

2:53 pm - 7:58 pm

IAD

DRO

7h 05m

1 stop

10:21 am - 6:27 pm

DRO

IAD

6h 06m

1 stop

$358American Airlines

Fri, Aug 21 - Tue, Aug 25

2:53 pm - 7:58 pm

IAD

DRO

7h 05m

1 stop

10:21 am - 6:27 pm

DRO

IAD

6h 06m

1 stop

$403American Airlines

Fri, Aug 28 - Tue, Sep 1

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Southwest flights from Washington, D.C. to Colorado

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

Southwest

Aug 24

BWI11:35 amBaltimore/Washington

6h 05m

1 stop

COS3:40 pmColorado Springs

Sep 1

COS1:15 pmColorado Springs

4h 55m

1 stop

BWI8:10 pmBaltimore/Washington

$258

Southwest

Sep 21

BWI7:10 amBaltimore/Washington

8h 25m

1 stop

COS1:35 pmColorado Springs

Sep 24

COS6:00 amColorado Springs

10h 15m

2 stops

BWI6:15 pmBaltimore/Washington

$269

Southwest

Aug 15

DCA12:45 pmWashington, D.C. Reagan-National

9h 50m

2 stops

COS8:35 pmColorado Springs

Aug 22

COS8:55 amColorado Springs

10h 00m

2 stops

DCA8:55 pmWashington, D.C. Reagan-National

$271

Frontier flights from Washington, D.C. to Colorado

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

Frontier

Aug 9

BWI9:32 pmBaltimore/Washington

24h 31m

2 stops

DEN8:03 pmDenver Intl

Aug 14

DEN6:59 pmDenver Intl

17h 27m

1 stop

BWI2:26 pmBaltimore/Washington

$278

Frontier

Sep 9

BWI9:20 pmBaltimore/Washington

17h 04m

2 stops

DEN12:24 pmDenver Intl

Sep 16

DEN11:59 pmDenver Intl

6h 30m

1 stop

BWI8:29 amBaltimore/Washington

$279

Frontier

Jul 29

BWI9:37 pmBaltimore/Washington

13h 26m

1 stop

DEN9:03 amDenver Intl

Aug 12

DEN10:16 amDenver Intl

19h 10m

2 stops

BWI7:26 amBaltimore/Washington

$281

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreColorado Springs

BWI - COS

BWICOS

Baltimore/Washington

Mon 8/24

11:35 am-3:40 pm

1 stop6h 05m

Colorado Springs

Tue 9/1

1:15 pm-8:10 pm

1 stop4h 55m

$258

Washington, D.C.Colorado Springs

DCA - COS

DCACOS

Washington, D.C. Reagan-National

Mon 9/21

2:00 pm-7:56 pm

1 stop7h 56m

Colorado Springs

Wed 9/30

1:25 pm-10:38 pm

1 stop7h 13m

$261

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Sun 8/9

9:32 pm-8:03 pm

2 stops24h 31m

Denver Intl

Fri 8/14

6:59 pm-2:26 pm

1 stop17h 27m

$278

BaltimoreDenver

BWI - DEN

BWIDEN

Baltimore/Washington

Wed 9/9

9:20 pm-12:24 pm

2 stops17h 04m

Denver Intl

Wed 9/16

11:59 pm-8:29 am

1 stop6h 30m

$279

Quickest round-trip

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 8/15

5:26 pm-7:30 pm

Nonstop4h 04m

Denver Intl

Tue 8/18

11:59 pm-5:25 am

Nonstop3h 26m

$309

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 9/5

4:40 pm-10:42 pm

1 stop8h 02m

Denver Intl

Tue 9/8

11:37 pm-10:02 am

1 stop8h 25m

$313

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 8/29

6:10 am-1:11 pm

1 stop9h 01m

Denver Intl

Sun 8/30

11:37 pm-7:58 am

1 stop6h 21m

$315

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 9/15

6:15 am-10:47 am

1 stop6h 32m

Colorado Springs

Tue 9/22

8:00 am-4:01 pm

1 stop6h 01m

$320

Washington, D.C.Durango

IAD - DRO

IADDRO

Washington, D.C. Dulles Intl

Fri 8/21

2:53 pm-7:58 pm

1 stop7h 05m

Durango La Plata County

Tue 8/25

10:21 am-6:27 pm

1 stop6h 06m

$358

Washington, D.C.Durango

IAD - DRO

IADDRO

Washington, D.C. Dulles Intl

Fri 8/28

2:53 pm-7:58 pm

1 stop7h 05m

Durango La Plata County

Tue 9/1

10:21 am-6:27 pm

1 stop6h 06m

$403

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 $198. The month of September is another great option to travel to Colorado, with average flight prices from Washington, D.C. averaging around $242.

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 $455. 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 $556.

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 $441. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $503 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 from Washington, D.C. 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 $399 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 $320 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?

You could potentially save up to 4% on your flight if you consider stops on a Washington, D.C. to Colorado flight.

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	$173
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 $173. The best round-trip flight deal from Washington, D.C. to Colorado found on momondo in the last 72 hours is $327.

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

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

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 July 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 Airbus A320neo, making up 14.34% of the total bookings. Other popular models include Boeing 737 MAX 8 with 12.35%, Airbus A321neo with 12.33%, and Boeing 737-900 with 11.68%.

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 $82	Free Cancellation	Rating 5.6 2,810 reviews	Search Frontier flights
JetBlue	PriceFrom $113	Free Cancellation	Rating 7.1 3,010 reviews	Search JetBlue flights
American Airlines	PriceFrom $166	Free Cancellation	Rating 7.1 11,808 reviews	Search American Airlines flights
Southwest	PriceFrom $177	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
Delta	PriceFrom $218	Free Cancellation	Rating 7.8 8,467 reviews	Search Delta flights
United Airlines	PriceFrom $223	Free Cancellation	Rating 7.4 9,991 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 Dallasfrom $62

Cheap flights from Washington, D.C. to Colorado from $73

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 8/31. 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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Southwest flights from Washington, D.C. to Colorado

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

Frontier flights from Washington, D.C. to Colorado

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

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See travel insights to Colorado from

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 from Washington, D.C. 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

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

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

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