What is the cheapest airline that flies from District of Columbia to Denver Intl?

Southwest, Frontier, and United Airlines are the most popular carriers operating from District of Columbia to Denver Intl

How many flights depart from District of Columbia to Denver on average per day?

The number of flights available between District of Columbia and Denver is 26 per day as of January 2026. The most frequent departure time is 4:00PM, with 51% of daily flights leaving in the afternoon.

What airlines fly to Denver?

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Denver from District of Columbia according to our data. Frontier is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

How many flights depart from District of Columbia to Denver on average per week?

The number of flights available between District of Columbia and Denver is 186 per week as of January 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.

When did momondo last update prices for flights from District of Columbia to Denver Intl Airport?

Prices for flights from District of Columbia to Denver Intl Airport were last updated today.

How many operators does momondo search for flights from District of Columbia to Denver Intl Airport?

The number of operators available for flights from District of Columbia to Denver Intl Airport is 5 as of January 2026.

How old do you have to be to fly from District of Columbia to Denver Intl Airport?

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 District of Columbia to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The travel and health documents you'll need for your trip to Denver Intl Airport 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 Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$68 Cheap Flights from District of Columbia to Denver in 2026

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 pm - 8:16 pm

DCA

DEN

4h 16mnonstop

11:37 am - 4:59 pm

DEN

DCA

3h 22mnonstop

$101Frontier

Mon, Feb 9 - Sat, Feb 14

8:00 am - 10:22 am

DCA

DEN

4h 22mnonstop

7:48 am - 1:15 pm

DEN

DCA

3h 27mnonstop

$102Frontier

Sat, Feb 21 - Sun, Mar 1

6:00 pm - 8:16 pm

DCA

DEN

4h 16mnonstop

7:35 am - 1:02 pm

DEN

DCA

3h 27mnonstop

$103Frontier

Sat, Jan 24 - Sat, Jan 31

2:00 pm - 4:22 pm

DCA

DEN

4h 22mnonstop

4:38 pm - 9:59 pm

DEN

DCA

3h 21mnonstop

$104Frontier

Sat, Feb 28 - Sat, Mar 7

8:00 am - 10:22 am

DCA

DEN

4h 22mnonstop

7:33 am - 1:00 pm

DEN

DCA

3h 27mnonstop

$106Frontier

Thu, Feb 5 - Sat, Feb 28

2:00 pm - 4:22 pm

DCA

DEN

4h 22mnonstop

7:48 am - 1:15 pm

DEN

DCA

3h 27mnonstop

$107Frontier

Thu, Feb 26 - Sun, Mar 1

6:00 pm - 8:16 pm

DCA

DEN

4h 16mnonstop

11:37 am - 4:59 pm

DEN

DCA

3h 22mnonstop

$108Frontier

Sat, Jan 31 - Fri, Feb 27

2:00 pm - 4:22 pm

DCA

DEN

4h 22mnonstop

7:48 am - 1:15 pm

DEN

DCA

3h 27mnonstop

$109Frontier

Thu, Feb 19 - Sun, Feb 22

8:00 am - 10:22 am

DCA

DEN

4h 22mnonstop

4:38 pm - 9:59 pm

DEN

DCA

3h 21mnonstop

$111Frontier

Sun, Feb 8 - Sat, Feb 14

6:00 pm - 8:16 pm

DCA

DEN

4h 16mnonstop

7:48 am - 1:15 pm

DEN

DCA

3h 27mnonstop

$112Frontier

Thu, Feb 19 - Sun, Mar 1

Frontier flights from District of Columbia to Denver

Our best Frontier deals on District of Columbia to Denver flight tickets

Frontier

Feb 9

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

4h 16m

DEN8:16 pmDenver Intl

Feb 14

DEN11:37 amDenver Intl

3h 22m

DCA4:59 pmWashington, D.C. Reagan-National

$101

Frontier

Feb 21

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

4h 22m

DEN10:22 amDenver Intl

Mar 1

DEN7:48 amDenver Intl

3h 27m

DCA1:15 pmWashington, D.C. Reagan-National

$102

Frontier

Jan 24

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

4h 16m

DEN8:16 pmDenver Intl

Jan 31

DEN7:35 amDenver Intl

3h 27m

DCA1:02 pmWashington, D.C. Reagan-National

$103

Southwest flights from District of Columbia to Denver

Our best Southwest deals on District of Columbia to Denver flight tickets

Southwest

Feb 5

IAD5:30 amWashington, D.C. Dulles Intl

4h 00m

DEN7:30 amDenver Intl

Feb 10

DEN10:35 amDenver Intl

3h 15m

IAD3:50 pmWashington, D.C. Dulles Intl

$163

Southwest

Feb 14

IAD5:05 amWashington, D.C. Dulles Intl

4h 00m

DEN7:05 amDenver Intl

Feb 23

DEN5:25 pmDenver Intl

3h 15m

IAD10:40 pmWashington, D.C. Dulles Intl

$170

Southwest

Jan 21

IAD9:05 amWashington, D.C. Dulles Intl

4h 10m

DEN11:15 amDenver Intl

Jan 24

DEN5:50 amDenver Intl

7h 05m

1 stop

IAD2:55 pmWashington, D.C. Dulles Intl

$342

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to Denver 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

Mon 2/9

6:00 pm-8:16 pm

Nonstop4h 16m

Denver Intl

Sat 2/14

11:37 am-4:59 pm

Nonstop3h 22m

$101

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 2/21

8:00 am-10:22 am

Nonstop4h 22m

Denver Intl

Sun 3/1

7:48 am-1:15 pm

Nonstop3h 27m

$102

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 1/24

6:00 pm-8:16 pm

Nonstop4h 16m

Denver Intl

Sat 1/31

7:35 am-1:02 pm

Nonstop3h 27m

$103

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 2/28

2:00 pm-4:22 pm

Nonstop4h 22m

Denver Intl

Sat 3/7

4:38 pm-9:59 pm

Nonstop3h 21m

$104

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 2/5

8:00 am-10:22 am

Nonstop4h 22m

Denver Intl

Sat 2/28

7:33 am-1:00 pm

Nonstop3h 27m

$106

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 2/26

2:00 pm-4:22 pm

Nonstop4h 22m

Denver Intl

Sun 3/1

7:48 am-1:15 pm

Nonstop3h 27m

$107

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 1/31

6:00 pm-8:16 pm

Nonstop4h 16m

Denver Intl

Fri 2/27

11:37 am-4:59 pm

Nonstop3h 22m

$108

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 2/19

2:00 pm-4:22 pm

Nonstop4h 22m

Denver Intl

Sun 2/22

7:48 am-1:15 pm

Nonstop3h 27m

$109

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sun 2/8

8:00 am-10:22 am

Nonstop4h 22m

Denver Intl

Sat 2/14

4:38 pm-9:59 pm

Nonstop3h 21m

$111

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 2/19

6:00 pm-8:16 pm

Nonstop4h 16m

Denver Intl

Sun 3/1

7:48 am-1:15 pm

Nonstop3h 27m

$112

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from District of Columbia to Denver

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 Denver?

The cheapest month to fly to Denver from District of Columbia is in January. Flight prices, which tend to average around $237, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until February to fly from District of Columbia, when ticket prices are also cheap, with an average price of $237.

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

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $304. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $366.

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

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $266. Flights in the evening are often more expensive with an average ticket price of $369.

What is the cheapest District of Columbia to Denver Intl flight route?

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

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

You are more likely to see cheaper flights to Denver from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $340 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from District of Columbia for as low as $276 on momondo.

What cabin class options are available on District of Columbia to Denver Intl flights?

There are 4 cabin classes available to choose from on District of Columbia to Denver Intl 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 District of Columbia to Denver flights?

No. A direct flight is the cheapest option for a flight between District of Columbia to Denver.

Cheap District of Columbia to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Denver

Best Price Found	$135
Fastest flight time	3h 40m
Direct flights	Every day
Airports in Denver	1 airport

The best one-way flight to Denver from District of Columbia in the past 72 hours is $135. The best round-trip flight deal from District of Columbia to Denver found on momondo in the last 72 hours is $128.

The fastest flight from District of Columbia to Denver takes 3h 40m

Direct flights go from District of Columbia to Denver every day.

There is 1 airport in Denver. From District of Columbia there are direct flights to Denver Intl (DEN).

Search flight deals

When did momondo last update prices for flights from District of Columbia to Denver Intl Airport?
Prices for flights from District of Columbia to Denver Intl Airport were last updated today.
How many operators does momondo search for flights from District of Columbia to Denver Intl Airport?
The number of operators available for flights from District of Columbia to Denver Intl Airport is 5 as of January 2026.
How old do you have to be to fly from District of Columbia to Denver Intl Airport?
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 District of Columbia to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The travel and health documents you'll need for your trip to Denver Intl Airport 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 Denver Intl Airport. 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 District of Columbia to Denver?
momondo data reveals that the most frequently booked plane model on the route from District of Columbia to Denver is Boeing 737 MAX 8, representing 13.80% of all bookings. The subsequent popular models are Boeing 737-900 at 13.08%, Airbus A320neo at 12.06%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 11.24%.

Best airlines flying from District of Columbia to Denver

Compare and see reviews for airlines that fly from District of Columbia to Denver with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $82	Free Cancellation	Rating 5.7 3,056 reviews	Search Frontier flights
Delta	PriceFrom $138	Free Cancellation	Rating 7.9 8,034 reviews	Search Delta flights
American Airlines	PriceFrom $166	Free Cancellation	Rating 7.2 11,105 reviews	Search American Airlines flights
Southwest	PriceFrom $177	Free Cancellation	Rating 8.0 4,254 reviews	Search Southwest flights
United Airlines	PriceFrom $215	Free Cancellation	Rating 7.4 9,145 reviews	Search United Airlines flights
JetBlue	PriceFrom $325	Free Cancellation	Rating 7.2 2,886 reviews	Search JetBlue flights

Breckenridge

Estes Park

Black Hawk

Aurora

Fort Collins

Manitou Springs

Cripple Creek

Keystone

Longmont

Boulder

Greeley

Lakewood

Thornton

Westminster

Winter Park

Frisco

Copper Mountain

Centennial

Grand Lake

Englewood

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Denver?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from District of Columbia to Denver. momondo saves you time and could save you money on your trip.

Can I find flights from District of Columbia to Denver with flexible booking policies on momondo?

Yes. All flights to Denver from District of Columbia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from District of Columbia to Denver?

momondo provides multiple filters to help you find the best flight to Denver from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from District of Columbia to Denver right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of District of Columbia to Denver 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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Cheap flights from District of Columbia to Denver from $92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Denver departing on 1/22. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from District of Columbia to Denver

Cheap round-trip flights

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Cheap last minute flights

Cheap direct flights

Frontier flights from District of Columbia to Denver

Our best Frontier deals on District of Columbia to Denver flight tickets

Southwest flights from District of Columbia to Denver

Our best Southwest deals on District of Columbia to Denver flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to Denver that are best for you.

See travel insights to Denver from

How to get the cheapest flight ticket from District of Columbia to Denver

What is the cheapest month to fly to Denver?

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

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $304. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $366.

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

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $266. Flights in the evening are often more expensive with an average ticket price of $369.

What is the cheapest District of Columbia to Denver Intl flight route?

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

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

What cabin class options are available on District of Columbia to Denver Intl flights?

There are 4 cabin classes available to choose from on District of Columbia to Denver Intl 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 District of Columbia to Denver flights?

No. A direct flight is the cheapest option for a flight between District of Columbia to Denver.

What is the cheapest airline that flies from District of Columbia to Denver Intl?

Southwest, Frontier, and United Airlines are the most popular carriers operating from District of Columbia to Denver Intl

What airlines fly to Denver?

How many flights depart from District of Columbia to Denver on average per day?

The number of flights available between District of Columbia and Denver is 26 per day as of January 2026. The most frequent departure time is 4:00PM, with 51% of daily flights leaving in the afternoon.

How many flights depart from District of Columbia to Denver on average per week?

The number of flights available between District of Columbia and Denver is 186 per week as of January 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.

Cheap District of Columbia to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Denver

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

When did momondo last update prices for flights from District of Columbia to Denver Intl Airport?

How many operators does momondo search for flights from District of Columbia to Denver Intl Airport?

How old do you have to be to fly from District of Columbia to Denver Intl Airport?

What documentation or ID do you need to fly to Denver Intl Airport?

What is the most popular plane model from District of Columbia to Denver?

Best airlines flying from District of Columbia to Denver

Compare and see reviews for airlines that fly from District of Columbia to Denver with momondo

Traveling to a place near Denver?

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Denver?

Can I find flights from District of Columbia to Denver with flexible booking policies on momondo?

How can momondo help me find flights from District of Columbia to Denver?

I’m not ready to book a flight from District of Columbia to Denver right now. Can momondo alert me if prices change?

An easier way to manage your Denver 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 the United States

Airports servicing Colorado