$89 Find Cheap Flights from Colorado to District of Columbia

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Good to know

Low seasonFebruary
High seasonOctober
Cheapest flight$89
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Denver to Washington Dulles 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 $161.

  • 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 Friday where round-trip tickets can be as cheap as $325. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $430 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 $313 on average. Morning departures are around 20% 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 $643.

  • 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 $94 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 $94.

  • 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 $225 (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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

  • How long is the flight to District of Columbia?

    An average nonstop flight from Colorado to District of Columbia takes 6h 11m, 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 4287 reviews
8.2Boarding
7.1Food
8.6Crew
8.0Comfort
7.6Entertainment
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

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

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

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.

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

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.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

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.

Book cheap flights from Colorado to District of Columbia

Recent round-trip flight deals

9/19Fri
nonstopFrontier
3h 26mDEN-DCA
9/22Mon
nonstopFrontier
4h 07mDCA-DEN
$176
8/19Tue
nonstopSouthwest
3h 20mDEN-IAD
8/23Sat
nonstopSouthwest
3h 50mIAD-DEN
$177
8/7Thu
nonstopFrontier
3h 29mDEN-DCA
8/10Sun
nonstopFrontier
3h 56mDCA-DEN
$177
9/23Tue
1 stopAmerican Airlines
7h 54mDEN-DCA
10/1Wed
1 stopAmerican Airlines
7h 21mDCA-DEN
$197
8/28Thu
nonstopSouthwest
3h 20mDEN-IAD
9/10Wed
nonstopSouthwest
3h 40mIAD-DEN
$197
11/12Wed
2 stopsAmerican Airlines
7h 45mDEN-IAD
11/19Wed
1 stopAmerican Airlines
8h 21mIAD-DEN
$202
10/8Wed
1 stopUnited Airlines
5h 43mDEN-IAD
10/14Tue
nonstopUnited Airlines
3h 48mIAD-DEN
$233
8/6Wed
1 stopDelta
6h 04mDEN-IAD
8/11Mon
1 stopDelta
6h 45mIAD-DEN
$237
8/19Tue
1 stopDelta
8h 30mCOS-IAD
8/26Tue
1 stopDelta
6h 50mIAD-COS
$237
8/29Fri
1 stopUnited Airlines
5h 32mDEN-IAD
9/7Sun
nonstopUnited Airlines
3h 45mIAD-DEN
$253

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Recent one-way flight deals

8/20Wed
nonstopUnited Airlines
3h 23mDEN-IAD
$89
10/15Wed
1 stopAmerican Airlines
6h 44mDEN-IAD
$98
7/22Tue
nonstopSouthwest
3h 20mDEN-IAD
$99
8/7Thu
1 stopAllegiant Air
18h 41mDEN-IAD
$102
9/12Fri
1 stopAllegiant Air
5h 30mDEN-IAD
$105
9/11Thu
1 stopSouthwest
4h 30mDEN-DCA
$114
10/19Sun
1 stopFrontier
8h 24mDEN-IAD
$115
9/23Tue
nonstopFrontier
3h 26mDEN-DCA
$115
8/4Mon
1 stopDelta
6h 04mDEN-IAD
$119
8/11Mon
1 stopDelta
8h 15mDEN-DCA
$119

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Last minute flights from Colorado to District of Columbia

Last minute flight, train and bus deals

6/17Tue
nonstopFrontier
3h 22mDEN-DCA
6/24Tue
nonstopFrontier
4h 02mDCA-DEN
$288
6/17Tue
nonstopFrontier
3h 31mDEN-DCA
6/21Sat
nonstopFrontier
4h 02mDCA-DEN
$298
6/17Tue
multi-stopAmerican Airlines
5h 59mDEN-IAD
6/24Tue
multi-stopAmerican Airlines
7h 01mIAD-DEN
$367
6/16Mon
multi-stopDelta
6h 10mDEN-DCA
6/24Tue
multi-stopDelta
5h 18mDCA-DEN
$387
6/17Tue
multi-stopAmerican Airlines
5h 58mDEN-DCA
6/17Tue
multi-stopAmerican Airlines
7h 24mDCA-DEN
$391
6/17Tue
multi-stopDelta
6h 05mDEN-IAD
6/21Sat
multi-stopDelta
5h 31mIAD-DEN
$397
6/17Tue
nonstopUnited Airlines
3h 26mDEN-IAD
6/18Wed
nonstopUnited Airlines
3h 56mIAD-DEN
$417
6/17Tue
nonstopUnited Airlines
3h 26mDEN-IAD
6/24Tue
nonstopUnited Airlines
3h 53mIAD-DEN
$427
6/17Tue
multi-stopSouthwest
6h 10mDEN-DCA
6/18Wed
multi-stopSouthwest
6h 55mDCA-DEN
$442
6/17Tue
nonstopSouthwest
3h 20mDEN-IAD
6/19Thu
nonstopSouthwest
3h 55mIAD-DEN
$543

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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.

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