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 41% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 7 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 day?

The number of flights available between District of Columbia and Denver is 18 per day as of August 2025. The most frequent departure time is 5:00PM, with 47% of daily flights leaving in the afternoon.

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

Frontier, United Airlines, and American 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 week?

The number of flights available between District of Columbia and Denver is 131 per week as of August 2025. The most frequent departure day is Fri, with 26% 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 6 as of August 2025.

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.

$39 Cheap Flights from District of Columbia to Denver in 2025

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Find the cheapest flights from District of Columbia to Denver

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

1:00 pm - 3:00 pmDCA-DEN

4h 00mnonstop

11:25 am - 4:59 pmDEN-DCA

3h 34mnonstop

$76Frontier

Find Deal

Sun, Sep 14 - Thu, Sep 18

7:00 am - 8:58 amDCA-DEN

3h 58mnonstop

11:25 am - 4:59 pmDEN-DCA

3h 34mnonstop

$77Frontier

Find Deal

Fri, Sep 12 - Sat, Sep 20

7:00 am - 8:58 amDCA-DEN

3h 58mnonstop

6:45 am - 12:10 pmDEN-DCA

3h 25mnonstop

$78Frontier

Find Deal

Thu, Sep 11 - Mon, Sep 15

6:00 pm - 7:59 pmDCA-DEN

3h 59mnonstop

4:34 pm - 9:59 pmDEN-DCA

3h 25mnonstop

$80Frontier

Find Deal

Sat, Nov 1 - Sat, Nov 8

7:00 am - 8:58 amDCA-DEN

3h 58mnonstop

4:34 pm - 9:59 pmDEN-DCA

3h 25mnonstop

$81Frontier

Find Deal

Sat, Oct 4 - Fri, Oct 10

7:00 am - 8:40 amIAD-DEN

3h 40mnonstop

5:25 pm - 10:45 pmDEN-IAD

3h 20mnonstop

$177Southwest

Find Deal

Sat, Sep 13 - Sat, Sep 20

5:45 am - 7:20 amIAD-DEN

3h 35mnonstop

1:00 pm - 6:15 pmDEN-IAD

3h 15mnonstop

$188Southwest

Find Deal

Tue, Sep 16 - Fri, Sep 19

10:14 pm - 11:59 pmIAD-DEN

3h 45mnonstop

8:00 am - 1:26 pmDEN-IAD

3h 26mnonstop

$198United Airlines

Find Deal

Thu, Sep 11 - Tue, Sep 16

10:09 pm - 11:57 pmIAD-DEN

3h 48mnonstop

11:59 pm - 5:16 amDEN-IAD

3h 17mnonstop

$199United Airlines

Find Deal

Thu, Oct 23 - Sun, Oct 26

2:21 pm - 10:16 pmIAD-DEN

9h 55m2 stops

5:44 am - 4:50 pmDEN-IAD

9h 06m1 stop

$202American Airlines

Find Deal

Wed, Sep 24 - Tue, Sep 30

United Airlines flights from District of Columbia to Denver

Our best United Airlines deals on District of Columbia to Denver flight tickets

United Airlines

Sep 11

IAD10:14 pmWashington, D.C. Dulles Intl

3h 45m

DEN11:59 pmDenver Intl

Sep 16

DEN8:00 amDenver Intl

3h 26m

IAD1:26 pmWashington, D.C. Dulles Intl

$198

Find similar

United Airlines

Oct 23

IAD10:09 pmWashington, D.C. Dulles Intl

3h 48m

DEN11:57 pmDenver Intl

Oct 26

DEN11:59 pmDenver Intl

3h 17m

IAD5:16 amWashington, D.C. Dulles Intl

$199

Find similar

Frontier flights from District of Columbia to Denver

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

Frontier

Sep 14

DCA1:00 pmWashington, D.C. Reagan-National

4h 00m

DEN3:00 pmDenver Intl

Sep 18

DEN11:25 amDenver Intl

3h 34m

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

$76

Find similar

Frontier

Sep 12

DCA7:00 amWashington, D.C. Reagan-National

3h 58m

DEN8:58 amDenver Intl

Sep 20

DEN11:25 amDenver Intl

3h 34m

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

$77

Find similar

Frontier

Sep 11

DCA7:00 amWashington, D.C. Reagan-National

3h 58m

DEN8:58 amDenver Intl

Sep 15

DEN6:45 amDenver Intl

3h 25m

DCA12:10 pmWashington, D.C. Reagan-National

$78

Find similar

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

Sun 9/14

1:00 pm-3:00 pm

Nonstop4h 00m

Denver Intl

Thu 9/18

11:25 am-4:59 pm

Nonstop3h 34m

$76

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Fri 9/12

7:00 am-8:58 am

Nonstop3h 58m

Denver Intl

Sat 9/20

11:25 am-4:59 pm

Nonstop3h 34m

$77

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Thu 9/11

7:00 am-8:58 am

Nonstop3h 58m

Denver Intl

Mon 9/15

6:45 am-12:10 pm

Nonstop3h 25m

$78

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 11/1

6:00 pm-7:59 pm

Nonstop3h 59m

Denver Intl

Sat 11/8

4:34 pm-9:59 pm

Nonstop3h 25m

$80

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sat 10/4

7:00 am-8:58 am

Nonstop3h 58m

Denver Intl

Fri 10/10

4:34 pm-9:59 pm

Nonstop3h 25m

$81

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 9/13

7:00 am-8:40 am

Nonstop3h 40m

Denver Intl

Sat 9/20

5:25 pm-10:45 pm

Nonstop3h 20m

$177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 9/16

5:45 am-7:20 am

Nonstop3h 35m

Denver Intl

Fri 9/19

1:00 pm-6:15 pm

Nonstop3h 15m

$188

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 9/11

10:14 pm-11:59 pm

Nonstop3h 45m

Denver Intl

Tue 9/16

8:00 am-1:26 pm

Nonstop3h 26m

$198

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 10/23

10:09 pm-11:57 pm

Nonstop3h 48m

Denver Intl

Sun 10/26

11:59 pm-5:16 am

Nonstop3h 17m

$199

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 9/24

2:21 pm-10:16 pm

2 stops9h 55m

Denver Intl

Tue 9/30

5:44 am-4:50 pm

1 stop9h 06m

$202

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Showing 1-10 of 20 resultsSorted by cheapest first

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 $244, 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 August to fly from District of Columbia, when ticket prices are also cheap, with an average price of $249.

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 $301. 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 $367.

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 $262. Flights in the evening are often more expensive with an average ticket price of $372.

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

Fly from Washington, D.C. Dulles Intl 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 $277 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.

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	$39
Fastest flight time	3h 35m
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 $39. The best round-trip flight deal from District of Columbia to Denver found on momondo in the last 72 hours is $76.

The fastest flight from District of Columbia to Denver takes 3h 35m

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

There is 1 airport near Denver: 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 6 as of August 2025.
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 12.40% of all bookings. The subsequent popular models are Boeing 737-900 at 12.07%, Airbus A321neo at 11.85%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 11.74%.

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 $89	Free Cancellation	Rating 5.8 3,211 reviews	Search Frontier flights
JetBlue	PriceFrom $128	Free Cancellation	Rating 7.2 2,916 reviews	Search JetBlue flights
Sun Country Air	PriceFrom $155	Free Cancellation	Rating 6.9 333 reviews	Search Sun Country Air flights
American Airlines	PriceFrom $166	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $188	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $193	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Delta	PriceFrom $216	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights

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Longmont

Boulder

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Lakewood

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Westminster

Thornton

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Silverthorne

Frisco

Centennial

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 $39

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 10/4. 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

Filter for what you want

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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United Airlines flights from District of Columbia to Denver

Our best United Airlines deals on District of Columbia to Denver flight tickets

Frontier flights from District of Columbia to Denver

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

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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

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

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 $301. 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 $367.

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 $262. Flights in the evening are often more expensive with an average ticket price of $372.

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

Fly from Washington, D.C. Dulles Intl 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.

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

Frontier, United Airlines, and American 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 18 per day as of August 2025. The most frequent departure time is 5:00PM, with 47% 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 131 per week as of August 2025. The most frequent departure day is Fri, with 26% 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