$74 Find Cheap Flights from Colorado to District of Columbia

1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to District of Columbia

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info
Useful Info

Good to know

Low seasonFebruary
High seasonMay
Cheapest flight$74
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Denver to Reagan Washington National Airport

Flights from Colorado to District of Columbia: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Colorado to District of Columbia 
JasonFlew with United AirlinesDEN-IADNov 2024
DIA is a large airport. Get there early.
BindulFlew with United AirlinesDEN-IADFeb 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.

FAQs for booking flights from Colorado to District of Columbia

  • How does KAYAK find such low prices on flights from Colorado to District of Columbia?

    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 District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado to District of Columbia 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 District of Columbia?

    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 from Colorado to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to District of Columbia?

    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 from Colorado to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in District of Columbia?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in District of Columbia is Washington, D.C. Reagan-National Airport (DCA), with an average flight price of $169.

  • What is the cheapest day to fly to District of Columbia?

    Based on KAYAK data, the cheapest day to fly to District of Columbia is Wednesday where round-trip tickets can be as cheap as $329. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $440 on average.

  • What is the cheapest time of day to fly to District of Columbia?

    The cheapest time of day to fly to District of Columbia is generally in the morning, when round-trip flights cost $316 on average. Morning departures are around 21% cheaper than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally at night, which is peak travel time and where the average cost of a ticket is $645.

  • What is the cheapest flight to District of Columbia?

    The cheapest ticket to District of Columbia from Colorado found in the last 72 hours was to Baltimore, at $135 round-trip. The most popular route is Colorado Springs (COS) to Baltimore (BWI) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $135.

  • What is the cheapest month to fly from Colorado to District of Columbia?

    The cheapest month for flights from Colorado to District of Columbia is October, when tickets cost $224 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $399 and $348 respectively.

  • How far in advance should I book a flight from Colorado to District of Columbia?

    To get a below average price on the flight from Colorado to District of Columbia, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

  • How long is the flight to District of Columbia?

    An average nonstop flight from Colorado to District of Columbia takes 5h 44m, covering a distance of 1581 miles. The shortest route is Denver (DEN) to Washington, D.C. Reagan-National Airport (DCA) with an average flight time of 3h 16m.

  • What is the most popular destination in District of Columbia?

    Based on KAYAK flight searches, the most popular destination is Washington, D.C. (100% of total searches to District of Columbia).

Top 5 airlines serving from Colorado to District of Columbia

Need help choosing which airline to fly with from Colorado to District of Columbia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
8.0Comfort
7.1Food
8.6Crew
7.6Entertainment
8.2Boarding
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

Any sort of gluten free snack option would be nice

The boarding crew was incredibly helpful getting me on an earlier flight

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Crew was late. Baggage was late. 2hs inside the plane waiting fro de-icing and traffic. A 3:30hs flight ended up being almost 6hs inside the airplane.

Flight delayed on both ends - have a gate ready at DCA, don't make us sit for 30min after being late to take off as well.

AA can't control the weather. But the airplane was hot and stuffy while stuck on the runway with a broken entertainment system.

very bare bones flight no entertainment screen, download shows prior to boarding to watch on phone or tablet.

It was good. It’s been a long time since my wife and I fly any where and things have changed. Our trip was to see our new grandson. We fly economy and that was not good for my bad back. It was a quick flight but uncomfortable.

Service in first class no longer exists on American Airlines .

Timely boarding process, made up for lost time even after a lengthy wait for de-icing

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Booked two aisle seats and were switched to an aisle and middle. Not happy.

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

Book cheap flights from Colorado to District of Columbia

Recent round-trip flight deals

6/13Fri
nonstopFrontier
3h 27mDEN-DCA
6/16Mon
nonstopFrontier
4h 04mDCA-DEN
$150
5/30Fri
nonstopFrontier
3h 29mDEN-DCA
6/5Thu
nonstopFrontier
4h 02mDCA-DEN
$151
6/11Wed
nonstopUnited Airlines
3h 26mDEN-IAD
6/11Wed
nonstopUnited Airlines
3h 56mIAD-DEN
$217
6/10Tue
1 stopAmerican Airlines
7h 30mDEN-DCA
6/11Wed
1 stopAmerican Airlines
6h 13mDCA-DEN
$231
6/25Wed
1 stopUnited Airlines
6h 50mCOS-DCA
6/29Sun
1 stopUnited Airlines
5h 43mDCA-COS
$237
5/31Sat
1 stopDelta
6h 18mDEN-IAD
6/3Tue
1 stopDelta
6h 42mIAD-DEN
$237
8/7Thu
1 stopDelta
5h 30mCOS-IAD
8/13Wed
1 stopDelta
6h 29mIAD-COS
$237
5/31Sat
2 stopsAmerican Airlines
9h 43mDEN-IAD
6/3Tue
1 stopAmerican Airlines
6h 49mIAD-DEN
$242
6/6Fri
nonstopSouthwest
3h 30mDEN-IAD
6/9Mon
1 stopSouthwest
8h 50mIAD-DEN
$267
7/4Fri
2 stopsSouthwest
6h 30mDEN-DCA
7/9Wed
1 stopSouthwest
5h 45mDCA-DEN
$282

Search by stops

Search by airline

Search by price

Recent one-way flight deals

7/20Sun
nonstopFrontier
3h 26mDEN-DCA
$74
6/20Fri
nonstopFrontier
3h 27mDEN-DCA
$75
6/14Sat
nonstopUnited Airlines
3h 25mDEN-IAD
$109
7/3Thu
nonstopSouthwest
3h 30mDEN-IAD
$117
7/23Wed
1 stopUnited Airlines
7h 10mCOS-IAD
$119
5/14Wed
1 stopAmerican Airlines
6h 03mCOS-DCA
$119
5/31Sat
1 stopDelta
6h 18mDEN-IAD
$119
6/14Sat
1 stopDelta
5h 53mDEN-DCA
$119
6/3Tue
2 stopsAmerican Airlines
9h 46mDEN-IAD
$124
7/4Fri
2 stopsSouthwest
6h 30mDEN-DCA
$144

Search by stops

Search by airline

Search by price

Last minute flights from Colorado to District of Columbia

Last minute flight, train and bus deals

5/5Mon
nonstopFrontier
3h 27mDEN-DCA
5/12Mon
nonstopFrontier
4h 02mDCA-DEN
$217
5/5Mon
multi-stopFrontier
7h 59mDEN-IAD
5/13Tue
multi-stopFrontier
13h 12mIAD-DEN
$270
5/5Mon
multi-stopDelta
5h 41mDEN-DCA
5/13Tue
multi-stopDelta
5h 34mDCA-DEN
$347
5/5Mon
nonstopUnited Airlines
3h 25mDEN-IAD
5/12Mon
nonstopUnited Airlines
3h 57mIAD-DEN
$367
5/5Mon
multi-stopDelta
8h 28mDEN-IAD
5/7Wed
multi-stopDelta
12h 05mIAD-DEN
$377
5/5Mon
nonstopUnited Airlines
3h 25mDEN-IAD
5/8Thu
nonstopUnited Airlines
3h 57mIAD-DEN
$397
5/5Mon
multi-stopAmerican Airlines
9h 43mDEN-IAD
5/8Thu
multi-stopAmerican Airlines
6h 19mIAD-DEN
$422
5/5Mon
multi-stopAmerican Airlines
9h 46mDEN-IAD
5/8Thu
multi-stopAmerican Airlines
8h 25mIAD-DEN
$517
5/1Thu
multi-stopSouthwest
5h 30mDEN-DCA
5/28Wed
multi-stopSouthwest
7h 55mDCA-DEN
$554
5/1Thu
nonstopSouthwest
3h 25mDEN-IAD
5/8Thu
nonstopSouthwest
3h 50mIAD-DEN
$573

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to District of Columbia

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.