How does KAYAK find such low prices on flights from Colorado to Washington, D.C.?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to Washington, D.C..

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to Washington, D.C.?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Colorado to Washington, D.C.?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Colorado with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to Washington, D.C.?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$75 CHEAP FLIGHTS from Colorado to Washington, D.C.

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Flight Deals

Cheap Flights from Colorado to Washington, D.C.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Colorado to Washington, D.C.

Fri, Sep 25 - Fri, Oct 2

6:38 pm - 6:20 amDEN Denver Intl-IAD Washington, D.C. Dulles Intl

9h 42m1 stop Las Vegas Harry Reid Intl

9:04 pm - 8:04 amIAD Washington, D.C. Dulles Intl-DEN Denver Intl

13h 00m1 stop Atlanta Hartsfield-Jackson

$225Frontier

Thu, Sep 10 - Sat, Sep 12

11:23 am - 4:59 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 36mnonstop

1:06 pm - 2:57 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

3h 51mnonstop

$226Frontier

Sun, Oct 18 - Fri, Oct 23

7:34 pm - 12:07 pmDEN Denver Intl-IAD Washington, D.C. Dulles Intl

14h 33m1 stop Valparaiso Destin-Ft Walton Beach

9:16 pm - 8:06 amIAD Washington, D.C. Dulles Intl-DEN Denver Intl

12h 50m1 stop Atlanta Hartsfield-Jackson

$226Multiple Airlines

Sat, Sep 5 - Wed, Sep 9

1:15 pm - 8:50 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

5h 35m1 stop Dallas Love Field

12:00 pm - 5:20 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

7h 20m2 stops Lambert-St Louis Kansas City

$229Southwest

Sat, Oct 17 - Sat, Nov 7

12:05 pm - 9:30 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

7h 25m1 stop Orlando

6:05 am - 2:30 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

10h 25m2 stops Houston Hobby San Antonio

$229Southwest

Mon, Sep 7 - Mon, Sep 14

10:45 pm - 5:01 amDEN Denver Intl-IAD Washington, D.C. Dulles Intl

28h 16m1 stop Las Vegas Harry Reid Intl

6:36 pm - 7:52 amIAD Washington, D.C. Dulles Intl-DEN Denver Intl

15h 16m2 stops Blountville Tri Cities TN/VA Orlando

$230Multiple Airlines

Wed, Sep 23 - Sat, Sep 26

6:00 am - 2:11 pmCOS Colorado Springs-IAD Washington, D.C. Dulles Intl

6h 11m1 stop Atlanta Hartsfield-Jackson

3:15 pm - 7:56 pmIAD Washington, D.C. Dulles Intl-COS Colorado Springs

6h 41m1 stop Atlanta Hartsfield-Jackson

$267Delta

Sat, Oct 17 - Sat, Nov 7

1:26 pm - 11:48 pmCOS Colorado Springs-DCA Washington, D.C. Reagan-National

8h 22m1 stop Atlanta Hartsfield-Jackson

4:00 pm - 8:16 pmDCA Washington, D.C. Reagan-National-COS Colorado Springs

6h 16m1 stop Atlanta Hartsfield-Jackson

$267Delta

Sat, Sep 12 - Sat, Sep 19

6:00 am - 1:30 pmCOS Colorado Springs-IAD Washington, D.C. Dulles Intl

5h 30m1 stop Denver Intl

6:15 am - 10:47 amIAD Washington, D.C. Dulles Intl-COS Colorado Springs

6h 32m1 stop Chicago O'Hare Intl

$267United Airlines

Sat, Sep 26 - Sat, Oct 3

11:57 am - 9:14 pmCOS Colorado Springs-DCA Washington, D.C. Reagan-National

7h 17m1 stop Chicago O'Hare Intl

5:10 pm - 9:53 pmDCA Washington, D.C. Reagan-National-COS Colorado Springs

6h 43m1 stop Chicago O'Hare Intl

$267United Airlines

Recent last minute flight deals from Colorado to Washington, D.C.

Fri, Aug 14 - Tue, Sep 15

10:00 am - 11:17 pmDEN Denver Intl-BWI Baltimore/Washington

11h 17m1 stop Atlanta Hartsfield-Jackson

10:22 am - 9:03 pmBWI Baltimore/Washington-DEN Denver Intl

12h 41m1 stop Atlanta Hartsfield-Jackson

$280Frontier

Mon, Aug 17 - Mon, Aug 31

11:59 pm - 12:24 pmDEN Denver Intl-BWI Baltimore/Washington

10h 25m1 stop Atlanta Hartsfield-Jackson

6:45 am - 2:01 pmBWI Baltimore/Washington-DEN Denver Intl

9h 16m1 stop Atlanta Hartsfield-Jackson

$287Frontier

Tue, Aug 18 - Tue, Aug 25

12:22 pm - 5:50 pmDEN Denver Intl-IAD Washington, D.C. Dulles Intl

3h 28mnonstop

2:43 pm - 4:32 pmIAD Washington, D.C. Dulles Intl-DEN Denver Intl

3h 49mnonstop

$434United Airlines

Mon, Aug 17 - Thu, Aug 27

7:30 am - 12:51 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 21mnonstop

6:10 am - 1:11 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

9h 01m1 stop New York John F Kennedy Intl

$435Multiple Airlines

Sun, Aug 16 - Thu, Aug 27

12:50 am - 9:10 amDEN Denver Intl-DCA Washington, D.C. Reagan-National

6h 20m1 stop Atlanta Hartsfield-Jackson

6:02 am - 10:47 amDCA Washington, D.C. Reagan-National-DEN Denver Intl

6h 45m1 stop New York John F Kennedy Intl

$454Delta

Mon, Aug 17 - Thu, Aug 27

6:56 am - 4:29 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

7h 33m1 stop Chicago O'Hare Intl

3:12 pm - 7:38 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

6h 26m1 stop Dallas/Fort Worth

$454American Airlines

Mon, Aug 17 - Thu, Sep 17

1:58 pm - 7:23 pmDEN Denver Intl-IAD Washington, D.C. Dulles Intl

3h 25mnonstop

10:34 pm - 12:30 amIAD Washington, D.C. Dulles Intl-DEN Denver Intl

3h 56mnonstop

$464United Airlines

Tue, Aug 18 - Tue, Aug 25

10:43 am - 10:55 pmDEN Denver Intl-IAD Washington, D.C. Dulles Intl

10h 12m2 stops Dallas/Fort Worth Charlotte Douglas

10:27 am - 4:53 pmIAD Washington, D.C. Dulles Intl-DEN Denver Intl

8h 26m2 stops Charlotte Douglas Chicago O'Hare Intl

$465American Airlines

Mon, Aug 17 - Thu, Aug 27

11:25 am - 4:59 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 34mnonstop

6:10 am - 1:11 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

9h 01m1 stop New York John F Kennedy Intl

$480Multiple Airlines

Mon, Aug 17 - Thu, Aug 27

9:39 am - 6:33 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

6h 54m1 stop Atlanta Hartsfield-Jackson

7:45 pm - 12:36 amDCA Washington, D.C. Reagan-National-DEN Denver Intl

6h 51m1 stop Atlanta Hartsfield-Jackson

$514Delta

Recent direct flight deals from Colorado to Washington, D.C.

Thu, Sep 10 - Sat, Sep 12

11:23 am - 4:59 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 36mnonstop

1:06 pm - 2:57 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

3h 51mnonstop

$226Frontier

Thu, Sep 3 - Tue, Sep 8

4:28 pm - 9:59 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 31mnonstop

7:00 am - 9:01 amDCA Washington, D.C. Reagan-National-DEN Denver Intl

4h 01mnonstop

$226Frontier

Wed, Sep 9 - Wed, Sep 16

6:45 am - 12:11 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 26mnonstop

1:00 pm - 2:51 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

3h 51mnonstop

$226Frontier

Fri, Sep 11 - Mon, Sep 14

11:23 am - 4:59 pmDEN Denver Intl-DCA Washington, D.C. Reagan-National

3h 36mnonstop

1:06 pm - 2:57 pmDCA Washington, D.C. Reagan-National-DEN Denver Intl

3h 51mnonstop

$226Frontier

Sat, Sep 5 - Mon, Sep 7

7:45 am - 1:10 pmDEN Denver Intl-BWI Baltimore/Washington

3h 25mnonstop

7:00 am - 8:50 amBWI Baltimore/Washington-DEN Denver Intl

3h 50mnonstop

$284Southwest

Sat, Sep 5 - Sat, Sep 12

7:45 am - 1:10 pmDEN Denver Intl-BWI Baltimore/Washington

3h 25mnonstop

3:05 pm - 5:00 pmBWI Baltimore/Washington-DEN Denver Intl

3h 55mnonstop

$285Southwest

Fri, Sep 11 - Tue, Sep 15

2:03 pm - 7:34 pmDEN Denver Intl-BWI Baltimore/Washington

3h 31mnonstop

4:18 pm - 6:16 pmBWI Baltimore/Washington-DEN Denver Intl

3h 58mnonstop

$285United Airlines

Fri, Oct 9 - Tue, Oct 13

6:45 pm - 12:05 amDEN Denver Intl-BWI Baltimore/Washington

3h 20mnonstop

6:25 am - 8:20 amBWI Baltimore/Washington-DEN Denver Intl

3h 55mnonstop

$286Southwest

Wed, Sep 9 - Wed, Sep 16

9:40 am - 3:12 pmDEN Denver Intl-BWI Baltimore/Washington

3h 32mnonstop

8:30 am - 10:28 amBWI Baltimore/Washington-DEN Denver Intl

3h 58mnonstop

$297United Airlines

Sat, Sep 26 - Sun, Sep 27

11:52 pm - 5:17 amDEN Denver Intl-IAD Washington, D.C. Dulles Intl

3h 25mnonstop

6:35 am - 8:28 amIAD Washington, D.C. Dulles Intl-DEN Denver Intl

3h 53mnonstop

$314United Airlines

Useful Info

Low season	January
High season	October
Cheapest flight	$75

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly and prices are also 7% lower on average.

Flight from Denver to Baltimore

NguyenFlew with United Airlines-Mar 2026

Check in desk immediately when you come in the doors on the left of door 215. Get TSA touchless before the flight—the line is so much shorter.

NesrinFlew with Southwest-Feb 2026

Get a seat in the very front if you can, otherwise, it is a very slow process.

JasonFlew with United Airlines-Nov 2024

DIA is a large airport. Get there early.

BindulFlew with United Airlines-Feb 2024

There are multiple flights between DEN and IAD everyday, including some wide bodies. Try and get on one of the wide bodies whenever possible.

How does KAYAK find such low prices on flights from Colorado to Washington, D.C.?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to Washington, D.C..
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to Washington, D.C.?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Colorado is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Colorado to Washington, D.C.?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Colorado with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to Washington, D.C.?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Linthicum Heights

Hanover

Springfield

Gaithersburg

Towson

Oxon Hill

Owings Mills

Greenbelt

Glen Burnie

Edgewood

Chesapeake Beach

Ellicott City

Camp Springs

Pikesville

Colonial Beach

Hunt Valley

Lutherville Timonium

Capitol Heights

Westminster

Stevensville

Everything you need to know for your flight to Washington, D.C.

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Cabin class types available on flights to Colorado

First Class flights to Washington, D.C.from $623

Business Class flights to Washington, D.C.from $636

Premium Economy Class flights to Washington, D.C.from $358

Economy Class flights to Washington, D.C.from $211

$75 Find Cheap Flights from Colorado to Washington, D.C. - Compare and Save

Cheap Flights from Colorado to Washington, D.C.

Recent round-trip flight deals from Colorado to Washington, D.C.

Recent one-way flight deals from Colorado to Washington, D.C.

Recent last minute flight deals from Colorado to Washington, D.C.

Recent direct flight deals from Colorado to Washington, D.C.

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Flights from Colorado to Washington, D.C.: the best tips from KAYAK users

FAQs for booking flights from Colorado to Washington, D.C.

Traveling to a place near Washington, D.C.?

Everything you need to know for your flight to Washington, D.C.

Cabin class types available on flights to Colorado

Complete your trip to Washington, D.C. with a hotel stay or car rental

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Flights from domestic origins to Washington, D.C.

Choose which airport to fly into in Washington, D.C.

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