How long is the flight from Colorado to Washington, D.C.?

For as low as $379, Delta can have you in Washington, D.C. from Colorado in 3h 13m. The distance between Colorado and Washington, D.C. is about 1448 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Colorado to Washington, D.C. one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $76. Users have also found prices from $98 and $108 on American Airlines and Southwest, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Colorado to Washington, D.C.?

Most travelers choose Denver Intl - Washington, D.C. Dulles Intl, Denver Intl - Baltimore/Washington or Denver Intl - Washington, D.C. Reagan-National when deciding on the best route from Colorado to Washington, D.C..

What are the cheapest flights from Colorado to Washington, D.C.?

While on average a flight from Colorado to Washington, D.C. is generally $1,004, our data shows the cheapest flight currently is $213. When looking at the most popular route, (Denver Intl - Washington, D.C. Dulles Intl), you can expect to pay $249 for that flight.

What are the most reliable airlines from Colorado to Washington, D.C.?

Before booking your flight to Washington, D.C. from Colorado, check out the most reliable airlines to get you to your destination on time: Ethiopian Air (98%), ITA Airways (98%), Avianca( 97%).

What are the most popular airlines that fly from Colorado to Washington, D.C.?

The most popular airlines flying from Colorado to Washington, D.C. are United Airlines, Frontier and Southwest. Something to consider prior to booking your flight.

Can I find deals for flights from Colorado to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Colorado to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Colorado to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Washington, D.C..

Can I find deals for business class flights from Colorado to Washington, D.C.?

Yes. Cheapflights offers flight deals from Colorado to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$148+ Cheap Flights from Colorado to Washington, D.C.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Colorado to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Colorado to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Colorado to Washington, D.C.
Explore the most affordable flight options available from Colorado to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Mon 12/76:10 pm -

2 stops18h 39m

Thu 12/103:08 pm -

1 stop28h 12m

Deal found 10/28

$255

Fri 12/46:10 pm -

2 stops18h 39m

Thu 12/103:08 pm -

1 stop28h 12m

Deal found 10/29

$293

Thu 12/38:46 pm -

2 stops16h 03m

Mon 12/78:55 pm -

1 stop13h 55m

Deal found 10/25

$294

Sat 11/217:50 pm -

1 stop7h 20m

Fri 11/271:09 pm -

1 stop13h 45m

Deal found 10/25

$295

Thu 12/106:46 am -

1 stop7h 13m

Thu 12/178:06 pm -

1 stop6h 26m

Deal found 10/26

$295

Wed 11/1810:39 am -

2 stops11h 04m

Fri 11/2010:47 pm -

2 stops22h 25m

Deal found 10/26

$296

Sat 11/217:50 pm -

2 stops14h 24m

Mon 11/2310:47 pm -

1 stop9h 49m

Deal found 10/29

$297

Mon 12/217:21 am -

1 stop8h 38m

Thu 12/2410:40 am -

1 stop9h 00m

Deal found 10/28

$297

Wed 11/117:10 pm -

1 stop13h 11m

Sat 11/1411:16 am -

1 stop10h 44m

Deal found 10/29

$298

Fri 11/204:17 pm -

2 stops17h 57m

Thu 11/2610:47 pm -

1 stop9h 49m

Deal found 10/27

$299

Wed 11/49:20 pm -

1 stop12h 16m

Sat 11/1412:33 pm -

1 stop11h 01m

Deal found 10/28

$300

Mon 11/2311:59 pm -

2 stops10h 15m

Mon 11/3010:47 pm -

2 stops18h 58m

Deal found 10/27

$301

Best flights from Colorado to Washington, D.C.
Discover carefully curated flight deals from Colorado to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Mon 12/71:40 pm -

1 stop5h 50m

Tue 12/86:00 am -

1 stop8h 33m

Deal found 10/29

$319

Thu 12/102:25 pm -

2 stops6h 55m

Thu 12/172:40 pm -

1 stop7h 15m

Deal found 10/26

$369

Sat 12/124:11 pm -

Nonstop3h 13m

Tue 12/155:30 pm -

Nonstop4h 09m

Deal found 10/26

$379

Wed 12/212:59 pm -

1 stop6h 00m

Mon 12/77:12 am -

1 stop6h 57m

Deal found 10/25

$385

Mon 1/42:46 pm -

1 stop23h 14m

Wed 1/66:59 pm -

2 stops19h 48m

Deal found 10/27

$425

Thu 11/266:00 am -

2 stops11h 16m

Thu 12/36:00 am -

1 stop8h 33m

Deal found 10/29

$324

Sat 12/58:02 am -

2 stops10h 09m

Sat 12/126:00 am -

1 stop8h 33m

Deal found 10/26

$324

Wed 12/94:11 pm -

Nonstop3h 13m

Sun 12/135:30 pm -

Nonstop4h 09m

Deal found 10/29

$379

Wed 12/21:40 pm -

2 stops7h 54m

Mon 12/712:30 pm -

2 stops11h 54m

Deal found 10/28

$329

Fri 1/227:40 am -

Nonstop3h 20m

Mon 1/2512:43 pm -

Nonstop4h 12m

Deal found 10/26

$379

Tue 1/1912:55 pm -

2 stops8h 05m

Fri 1/226:20 am -

2 stops7h 55m

Deal found 10/27

$420

Sat 12/1911:59 pm -

Nonstop3h 20m

Thu 1/74:15 pm -

Nonstop4h 10m

Deal found 10/29

$379

Fri 12/188:30 am -

2 stops7h 40m

Mon 12/219:00 pm -

1 stop5h 40m

Deal found 10/27

$425

Wed 12/91:10 pm -

1 stop8h 20m

Wed 12/167:14 am -

1 stop7h 23m

Deal found 10/25

$494

Sat 12/1910:39 am -

1 stop10h 20m

Wed 12/306:00 am -

1 stop6h 05m

Deal found 10/26

$376

Mon 12/286:00 am -

Nonstop3h 21m

Fri 1/17:30 pm -

Nonstop4h 03m

Deal found 10/26

$379

Mon 11/168:55 am -

2 stops7h 05m

Wed 11/1812:15 pm -

2 stops9h 40m

Deal found 10/28

$440

Tue 12/2212:55 am -

1 stop8h 39m

Mon 12/286:00 am -

1 stop5h 44m

Deal found 10/26

$376

Sat 12/55:45 am -

1 stop5h 13m

Sat 12/55:39 pm -

1 stop6h 20m

Deal found 10/25

$385

Tue 11/171:10 pm -

1 stop7h 36m

Thu 11/195:00 am -

1 stop9h 38m

Deal found 10/29

$515

Fri 11/275:50 am -

1 stop8h 35m

Fri 12/44:00 pm -

2 stops7h 45m

Deal found 10/29

$444

Thu 12/107:00 am -

1 stop5h 56m

Mon 12/144:13 pm -

1 stop6h 28m

Deal found 10/29

$388

Tue 11/101:10 pm -

1 stop8h 49m

Sat 11/145:00 am -

1 stop9h 39m

Deal found 10/26

$531

Wed 4/76:05 am -

1 stop6h 36m

Sun 4/116:10 am -

1 stop6h 02m

Deal found 10/25

$399

Wed 1/206:26 pm -

1 stop24h 34m

Sat 1/238:00 am -

1 stop10h 46m

Deal found 10/28

$661

Thu 11/266:20 am -

2 stops7h 35m

Thu 12/38:25 am -

2 stops9h 10m

Deal found 10/29

$471

Mon 11/161:40 pm -

1 stop7h 35m

Wed 11/182:05 pm -

1 stop8h 25m

Deal found 10/26

$398

Tue 4/612:59 am -

1 stop6h 13m

Sun 4/116:00 am -

1 stop6h 12m

Deal found 10/25

$399

Thu 11/1212:54 pm -

1 stop8h 36m

Mon 11/162:42 pm -

1 stop7h 35m

Deal found 10/28

$543

Mon 12/2112:59 pm -

1 stop8h 29m

Thu 12/3112:34 pm -

1 stop7h 00m

Deal found 10/28

$399

Last-minute flights from Colorado to Washington, D.C.
Discover last-minute flight deals from Colorado to Washington, D.C.. Data last updated October 30, 2026 and is based on user searches.

Wed 11/49:20 pm -

1 stop12h 16m

Sat 11/1412:33 pm -

1 stop11h 01m

Deal found 10/28

$300

Wed 11/117:10 pm -

1 stop13h 11m

Sat 11/1411:16 am -

1 stop10h 44m

Deal found 10/29

$298

Mon 11/166:50 am -

1 stop7h 16m

Mon 11/2312:50 pm -

1 stop6h 31m

Deal found 10/25

$297

Wed 11/1810:39 am -

2 stops11h 04m

Fri 11/2010:47 pm -

2 stops22h 25m

Deal found 10/26

$296

Wed 11/189:10 pm -

1 stop12h 36m

Fri 11/209:35 pm -

1 stop14h 38m

Deal found 10/28

$302

Thu 11/1911:30 am -

Nonstop3h 17m

Sun 11/227:00 am -

Nonstop4h 16m

Deal found 10/28

$304

Fri 11/204:17 pm -

2 stops17h 57m

Thu 11/2610:47 pm -

1 stop9h 49m

Deal found 10/27

$299

Fri 11/206:42 am -

1 stop20h 28m

Mon 11/309:35 pm -

1 stop14h 23m

Deal found 10/26

$304

Sat 11/217:50 pm -

1 stop7h 20m

Fri 11/271:09 pm -

1 stop13h 45m

Deal found 10/25

$295

Sat 11/217:50 pm -

2 stops14h 24m

Mon 11/2310:47 pm -

1 stop9h 49m

Deal found 10/29

$297

Mon 11/2311:59 pm -

2 stops10h 15m

Mon 11/3010:47 pm -

2 stops18h 58m

Deal found 10/27

$301

Mon 11/233:52 pm -

1 stop25h 35m

Fri 11/271:09 pm -

1 stop13h 45m

Deal found 10/30

$305

One-way flights from Colorado to Washington, D.C.
Search for one-way flight options from Colorado to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Sat 12/198:59 pm -

2 stops25h 52m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/29

$148

Fri 1/17:21 am -

1 stop7h 13m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/27

$149

Fri 11/2710:58 am -

1 stop7h 42m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/27

$151

Fri 12/114:40 pm -

Nonstop3h 19m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/27

$151

Mon 11/2311:40 am -

Nonstop3h 17m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$152

Sun 11/226:20 am -

2 stops36h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/29

$153

Wed 11/2511:40 am -

Nonstop3h 17m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$153

Mon 1/257:47 am -

1 stop30h 13m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/27

$154

Sun 12/206:25 am -

1 stop11h 06m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$155

Mon 12/2111:35 am -

Nonstop3h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$155

Tue 12/14:40 pm -

Nonstop3h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/27

$156

Mon 12/288:35 am -

1 stop8h 56m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$157

Find flight deals from Colorado to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$255 (Kiwi.com)
One-way from	$148 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$384
Good round-trip deal	$351 or less
Good one-way deal	$215 or less

Provider with most accurate pricing for Denver Intl-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. (WAS) flights.

Search Deals

From Colorado to Washington, D.C. (WAS)

Search Deals

One-way flight from Colorado to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($63 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from Colorado to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Colorado to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Wed 11/18

11:20 am-6:00 pm

1 stop4h 40m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$160

Colorado SpringsWashington, D.C.

COS Colorado Springs - DCA Washington, D.C. Reagan-National

COSDCA

Colorado Springs

Mon 11/23

1:31 pm-10:45 pm

1 stop7h 14m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$160

Quickest round-trip

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Mon 12/14

11:20 am-5:55 pm

1 stop4h 35m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$160

Colorado SpringsWashington, D.C.

COS Colorado Springs - IAD Washington, D.C. Dulles Intl

COSIAD

Colorado Springs

Mon 11/23

6:08 pm-9:09 am

2 stops13h 01m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$165

Colorado SpringsWashington, D.C.

COS Colorado Springs - IAD Washington, D.C. Dulles Intl

COSIAD

Colorado Springs

Mon 11/23

1:20 pm-9:28 pm

1 stop6h 08m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$180

Colorado SpringsWashington, D.C.

COS Colorado Springs - DCA Washington, D.C. Reagan-National

COSDCA

Colorado Springs

Fri 11/20

1:31 pm-11:46 pm

1 stop8h 15m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$180

Colorado SpringsWashington, D.C.

COS Colorado Springs - DCA Washington, D.C. Reagan-National

COSDCA

Colorado Springs

Sat 11/21

1:31 pm-11:46 pm

1 stop8h 15m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$193

DenverWashington, D.C.

DEN Denver Intl - DCA Washington, D.C. Reagan-National

DENDCA

Denver Intl

Sun 1/17

6:50 am-1:55 pm

1 stop5h 05m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$195

MontroseWashington, D.C.

MTJ Montrose County - DCA Washington, D.C. Reagan-National

MTJDCA

Montrose County

Wed 1/13

2:21 pm-11:42 pm

1 stop7h 21m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$200

MontroseWashington, D.C.

MTJ Montrose County - DCA Washington, D.C. Reagan-National

MTJDCA

Montrose County

Wed 1/13

12:55 pm-11:00 pm

2 stops8h 05m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$205

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Colorado to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Colorado with our price prediction graph.

COS-IAD

DEN-IAD

DEN-DCA

COS-DCA

ASE-IAD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Washington, D.C.

USCO-WAS

COS-IAD

DEN-IAD

DEN-DCA

COS-DCA

What is the cheapest month to book a flight from Colorado to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $253). Flying from Colorado to Washington, D.C. in June is currently the most expensive (average of $483). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to WAS?

It’s typically best to fly out from Colorado to Washington, D.C. in the morning. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost to fly round-trip from Colorado to Washington, D.C.?

Airfare is below average for this route at the moment.

Colorado to Washington, D.C. flights typically cost between $329 and $480 in December.
The cheapest round-trip price found within the last 5 days was $294 on Frontier (Dec 3-Dec 7).

How far ahead should I book a flight from Colorado to Washington, D.C.?

The price you pay for your flight from Colorado to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Colorado to Washington, D.C.?

Travelers seeking maximum savings on their Colorado to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

How long is the flight from Colorado to Washington, D.C.?
For as low as $379, Delta can have you in Washington, D.C. from Colorado in 3h 13m. The distance between Colorado and Washington, D.C. is about 1448 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Colorado to Washington, D.C. one-way?
For one-way options, check prices for Frontier. According to our data, you can fly for as low as $76. Users have also found prices from $98 and $108 on American Airlines and Southwest, respectively.
What are the most popular routes from Colorado to Washington, D.C.?
Most travelers choose Denver Intl - Washington, D.C. Dulles Intl, Denver Intl - Baltimore/Washington or Denver Intl - Washington, D.C. Reagan-National when deciding on the best route from Colorado to Washington, D.C..
What are the most reliable airlines from Colorado to Washington, D.C.?
Before booking your flight to Washington, D.C. from Colorado, check out the most reliable airlines to get you to your destination on time: Ethiopian Air (98%), ITA Airways (98%), Avianca( 97%).
What are the cheapest flights from Colorado to Washington, D.C.?
While on average a flight from Colorado to Washington, D.C. is generally $1,004, our data shows the cheapest flight currently is $213. When looking at the most popular route, (Denver Intl - Washington, D.C. Dulles Intl), you can expect to pay $249 for that flight.
Can I find deals for flights from Colorado to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Colorado to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Washington, D.C..
Can I find deals for business class flights from Colorado to Washington, D.C.?
Yes. Cheapflights offers flight deals from Colorado to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Colorado to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from Colorado to Washington, D.C. (average of $253). Flying from Colorado to Washington, D.C. in June is currently the most expensive (average of $483). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Alexandria

Woodbridge

Arlington

Owings Mills

Lanham

Reston

Herndon

Hyattsville

Rockville

Springfield

Fredericksburg

Tysons

Falls Church

Towson

Silver Spring

Oxon Hill

Laurel

Clinton

Hunt Valley

Waldorf

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Popular flights

Top destinations

Washington, D.C. flight routes

Alternative routes for Colorado to Washington, D.C.

Dallas/Fort Worth to Dulles Intl flights

Boston to Reagan-National flights

Atlanta to Dulles Intl flights

San Francisco to Dulles Intl flights

Los Angeles to Reagan-National flights

O'Hare Intl to Reagan-National flights

Dallas/Fort Worth to Reagan-National flights

Orlando to Dulles Intl flights

O'Hare Intl to Dulles Intl flights

Los Angeles to Dulles Intl flights

San Francisco to Reagan-National flights

Boston to Dulles Intl flights

Atlanta to Reagan-National flights

Denver to Dulles Intl flights

Hobby to Reagan-National flights

Seattle to Dulles Intl flights

Orlando to Reagan-National flights

Denver to Reagan-National flights

Seattle to Reagan-National flights

Tampa to Dulles Intl flights

Miami to Reagan-National flights

John F Kennedy Intl to Reagan-National flights

San Diego to Dulles Intl flights

Miami to Dulles Intl flights

Fort Lauderdale to Reagan-National flights

Detroit to Reagan-National flights

John F Kennedy Intl to Dulles Intl flights

Minneapolis to Reagan-National flights

Midway to Dulles Intl flights

Sky Harbor Intl to Dulles Intl flights

Fort Lauderdale to Dulles Intl flights

LaGuardia to Reagan-National flights

Ontario to Dulles Intl flights

Hobby to Dulles Intl flights

Austin to Dulles Intl flights

George Bush Intcntl to Dulles Intl flights

Minneapolis to Dulles Intl flights

George Bush Intcntl to Reagan-National flights

Detroit to Dulles Intl flights

Tampa to Reagan-National flights

Newark to Dulles Intl flights

Indianapolis to Dulles Intl flights

Ontario to Reagan-National flights

Newark to Reagan-National flights

San Diego to Reagan-National flights

Charlotte to Dulles Intl flights

LaGuardia to Dulles Intl flights

Sky Harbor Intl to Reagan-National flights

Austin to Reagan-National flights

Top 6 airlines flying from Colorado to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$108	Average$506	FlexibilityNo cancel fee	On-timeN/A
Frontier	Cheapest$121	Average$313	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$216	Average$461	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$227	Average$552	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$261	Average$507	FlexibilityNo cancel fee	On-time71%
JetBlue	Cheapest$280	Average$363	FlexibilityNo cancel fee	On-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$148+ Cheap flights from Colorado to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Colorado to Washington, D.C.

Cheapest flights from Colorado to Washington, D.C.Explore the most affordable flight options available from Colorado to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Explore the most affordable flight options available from Colorado to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from Colorado to Washington, D.C.Discover carefully curated flight deals from Colorado to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Discover carefully curated flight deals from Colorado to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Last-minute flights from Colorado to Washington, D.C.Discover last-minute flight deals from Colorado to Washington, D.C.. Data last updated October 30, 2026 and is based on user searches.

Discover last-minute flight deals from Colorado to Washington, D.C.. Data last updated October 30, 2026 and is based on user searches.

One-way flights from Colorado to Washington, D.C.Search for one-way flight options from Colorado to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Search for one-way flight options from Colorado to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Find flight deals from Colorado to Washington, D.C.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Best time to book a flight from Colorado to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Colorado with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Colorado to Washington, D.C.?

What is the cheapest time of day to fly from CO to WAS?

Find hourly flight availability from Colorado to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2026.

It’s typically best to fly out from Colorado to Washington, D.C. in the morning. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost to fly round-trip from Colorado to Washington, D.C.?

Airfare is below average for this route at the moment.

Colorado to Washington, D.C. flights typically cost between $329 and $480 in December.The cheapest round-trip price found within the last 5 days was $294 on Frontier (Dec 3-Dec 7).

How far ahead should I book a flight from Colorado to Washington, D.C.?

The price you pay for your flight from Colorado to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Colorado to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Colorado to Washington, D.C.. Price data was last updated on October 24, 2026.

Travelers seeking maximum savings on their Colorado to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

How long is the flight from Colorado to Washington, D.C.?

What are the cheapest airlines to fly from Colorado to Washington, D.C. one-way?

What are the most popular routes from Colorado to Washington, D.C.?

What are the most reliable airlines from Colorado to Washington, D.C.?

What are the cheapest flights from Colorado to Washington, D.C.?

Can I find deals for flights from Colorado to Washington, D.C. that include hotel bookings?

How can I find direct flights from Colorado to Washington, D.C.?

Can I find deals for business class flights from Colorado to Washington, D.C.?

What is the cheapest month to book a flight from Colorado to Washington, D.C.?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Colorado to Washington, D.C. by cabin class

Find flights from Colorado to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Colorado and Washington, D.C. flights

Browse other Colorado and Washington, D.C. flight options. Last updated on October 30, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Colorado to Washington, D.C. flights

Consider these flights traveling from Colorado to Washington, D.C..

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.

Top 6 airlines flying from Colorado to Washington, D.C.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Colorado to Washington, D.C.
Explore the most affordable flight options available from Colorado to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from Colorado to Washington, D.C.
Discover carefully curated flight deals from Colorado to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Last-minute flights from Colorado to Washington, D.C.
Discover last-minute flight deals from Colorado to Washington, D.C.. Data last updated October 30, 2026 and is based on user searches.

One-way flights from Colorado to Washington, D.C.
Search for one-way flight options from Colorado to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Colorado to Washington, D.C. flights typically cost between $329 and $480 in December.
The cheapest round-trip price found within the last 5 days was $294 on Frontier (Dec 3-Dec 7).