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COS - IAD

Find cheap flights from Colorado Springs to Washington Dulles Airport from $134

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Colorado Springs to Dulles Intl departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 5/19
Sun 5/26

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Colorado Springs to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Colorado Springs to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 44,212,662 times on KAYAK, and here is why:

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Cheap flight deals from Colorado Springs to Dulles Intl (COS-IAD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Colorado Springs to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
1:30 pm - 9:44 pmCOS-IAD
6h 14m1 stop
7:10 am - 1:09 pmIAD-COS
7h 59m1 stop
$258Delta
Find Deal
Tue, Sep 24 - Wed, Oct 16
1:30 pm - 9:44 pmCOS-IAD
6h 14m1 stop
7:10 am - 1:09 pmIAD-COS
7h 59m1 stop
$263Delta
Find Deal
Thu, Sep 26 - Tue, Oct 15
1:30 pm - 9:44 pmCOS-IAD
6h 14m1 stop
7:10 am - 1:09 pmIAD-COS
7h 59m1 stop
$268Delta
Find Deal
Thu, Sep 26 - Mon, Oct 14
1:30 pm - 9:44 pmCOS-IAD
6h 14m1 stop
6:15 am - 10:40 amIAD-COS
6h 25m1 stop
$288Delta
Find Deal
Tue, Sep 24 - Sat, Oct 12
1:30 pm - 9:44 pmCOS-IAD
6h 14m1 stop
6:15 am - 10:40 amIAD-COS
6h 25m1 stop
$293Delta
Find Deal
Thu, Sep 26 - Sat, Oct 12
12:05 pm - 9:05 pmCOS-IAD
7h 00m1 stop
3:59 pm - 7:54 pmIAD-COS
5h 55m1 stop
$299United Airlines
Find Deal
Wed, May 1 - Sat, May 11
5:45 pm - 12:57 pmCOS-IAD
17h 12m1 stop
7:30 am - 5:56 pmIAD-COS
12h 26m1 stop
$335Sun Country Air
Find Deal
Thu, Jul 4 - Sun, Jul 7
3:20 pm - 11:14 pmCOS-IAD
5h 54m1 stop
6:45 am - 11:23 amIAD-COS
6h 38m1 stop
$344United Airlines
Find Deal
Sat, May 11 - Tue, May 14
10:51 am - 12:01 amCOS-IAD
11h 10m2 stops
8:12 pm - 10:00 amIAD-COS
15h 48m2 stops
$359American Airlines
Find Deal
Mon, May 13 - Mon, May 20
10:42 am - 11:24 pmCOS-IAD
10h 42m1 stop
6:00 am - 9:54 amIAD-COS
5h 54m1 stop
$394American Airlines
Find Deal
Mon, Jul 1 - Wed, Jul 10

Flights from Colorado Springs to Dulles Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from Colorado Springs to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Colorado Springs to Washington Dulles Airport?

The average price of all flights from Colorado Springs to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Colorado Springs to Washington Dulles Airport, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Washington Dulles Airport, Wednesday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Colorado Springs to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Colorado Springs to Washington, D.C. Dulles Intl Airport is October, where tickets cost $398 on average. On the other hand, the most expensive months are December and January, where the average cost of tickets is $675 and $660 respectively.

How far in advance should I book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Colorado Springs to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Colorado Springs to Washington, D.C. Dulles Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 79 days before departure.

Which airlines provide the cheapest flights from Colorado Springs to Washington Dulles Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Delta offered the best one-way deal for that route, at $134. KAYAK users also found Colorado Springs to Washington Dulles Airport round-trip flights on Delta from $258 and on United Airlines from $299.

Good to know

Low season

March

High season

October

Cheapest flight

$134
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from Colorado Springs to Washington Dulles Airport

When to book flights from Colorado Springs to Dulles Intl

Are your dates flexible? Find out the best times to travel from Colorado Springs to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Colorado Springs to Washington Dulles Airport flights

  • What is the cheapest flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

    In the last 3 days, the lowest price for a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport was $134 for a one-way ticket and $258 for a round-trip.

  • Do I need a passport to fly between Colorado Springs and Washington Dulles Airport?

    No

  • Which airports will I be using when flying from Colorado Springs to Washington Dulles Airport?

    On your way to Washington Dulles Airport, you’ll fly out from Colorado Springs. You’ll be landing at Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Colorado Springs to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Colorado Springs to Washington Dulles Airport?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Colorado Springs and Washington Dulles Airport, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Colorado Springs to Washington, D.C., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Colorado Springs to Washington, D.C. are Delta and United Airlines. With an average price for the route of $568 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $504 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Colorado Springs to Washington Dulles Airport?

    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 Springs to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado Springs to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Colorado Springs 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 Springs to Washington Dulles Airport?

    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 Dulles Airport with an airline and back to Colorado Springs with another airline. Booking your flights between Colorado Springs and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado Springs to Washington Dulles Airport?

    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 Dulles Airport from Colorado Springs up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Colorado Springs to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Colorado Springs to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Colorado Springs to Dulles Intl? 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
DeltaOverall score based on 11094 reviews
8.2boarding
7.9comfort
7.5food
8.0entertainment
8.6crew
Airline reviews

Seat back monitors and outlets were dead and not working.

8.0 ExcellentCarl, Apr 2024JFK - FLL
Read more about Delta reviews

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

Worst flight in my life. Only was scheduled for a 45 min flight to get our connection flight. It was late by 40 minutes and we missed our connection. Delta was totally useless trying to help and unable to get my family on the next flight because they overbooked it Thus had to get a hotel at my expense and lost a day at Disney as a result. Cost me about a $1000 if you add 2 hotels meals shuttles etc to get thru the day Awful customer service by Delta in Detroit totally useless people

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Food choice was poor and we had to buy on board snacks.

We were offer chocolate cookies , not everyone eat chocolate. Thank you

Lost luggage again. Our second trip to Mykonos, and 2nd time no luggage.

Flight was well orchestrated, made up time despite circling a bit all good on United. Travelers can just be so into themselves that common courtesy has gone out window for some, but that’s not on United.

Loading was quick and efficient. The bate and switch with discount tickets were you are forced to pay for bag.

Good flight, comfortable seats and very quick passage through Heathrow. Boarding in Washington was cramped and not well organized, but the rest was perfect.

The flight was great until towards the end when the flight attendant read an excessively long commercial for purchasing an american airlines credit card. The worst part is that we are doing a lot of traveling this year so i was actually interested in getting the credit card, but I was so annoyed with the long commercial that I completely dismissed the flight attendant bringing around the information. Next time, keep the sales pitch to 10 seconds and then pass around the brochures!!

Nice aircraft. Plane was PACKED full and distance between seats was tight. Had it been more than a two hour flight it would not have been tolerable. I had much more knee space on the JetBlue flight I went out on.

New ridiculous policy by american destroyed my allegiance to american. As a million miler with american, I expected it would be easy to get on an earlier flight when I got to airport earlier than expected, and save a five hour layover. WRONG. The online app would not let me switch flights, So I called, and was promised a call back in 90 minutes. HAH! The customer service desk at DCA said “we no longer have access to changing a flight on our screens. If the app couldn’t do it, I should send a letter to American, but there’s nothing else possible!”

I am tired of being nickel and dimed for seat location, checked luggage and carry on bags. That is why i rarely fly anymore.

It was right on time and crew were very courteous

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Literally the worst experience ever and I had my service dog with me. Flight was supposed to leave at 1:51 PM but the plane arrived late. They boarded us around 3 PM and kept us on the plane for an hour saying that due to weather conditions in Miami, we could not takeoff yet. After waiting for an hour, they deplaned. And then they will not give us our bags back that we could just leave and schedule for another flight. Every hour they kept updating saying we have to wait another hour without any explanation as to what was going on. Eventually, I went to customer service to change my ticket, but by the time I made it to the front of the line, they started boarding my flight again. And then when we got onto the flight, they said there were two flight attendants That were past their shift. They kept us on the plane for about another 40 minutes until they told us they had no other flight attendance and had to deplane again. Then I gave us hotel vouchers and told us we would be on a flight at 6 AM the next day. At this point it is about 9 PM. I get to the hotel with my dog, who hasn’t been able to go potty for about eight hours. When I arrived at the hotel, I got a text alert saying my flight has been canceled at 6 AM and they moved past to 5 AM, however the hotel shuttle doesn’t leave early enough to make it to the airport for 5 AM flight. So me and some other passengers got a cab after about three hours of sleep to get back to the airport. This was the worst experience ever.

Their computers were down upon arrival to the airport. They were unable to figure out how to board us. We were delayed over an hour and a half.

Delay. Flight was delayed in Washington.knew that connection was impossible as not enough time to switch terminals. The steward would not let me stay the night. So forced to Dallas.late night, after 10pm.hotel checkin was one hour. Passengers lined up only one girl to checkin at comfort inn. No food availability at that time. Had to leave early at 6:30 am to catch a flight at 8:45. Stressfull.

The experience with American Airlines was terrible from beginning to end. Flight 1210 from Cancun to Charlotte was delayed three times. AA customer service at the CUN airport could not provide information on why or how to accommodate me if I missed my connecting flight at CLT due to the delays. Upon arrival to CLT, de-boarding the plane was a horrible experience. You all should have allowed passengers with departing connecting flights within the hour, to get off the plane first! It caused so many passengers to lose valuable time waiting to get off the plane, and then the long lines in customs! American Airlines knew passengers had to make connecting flights and still chose not to hold the plane? I missed Flight 2758 from CLT to DCA for that reason. Waiting three more hours for the next - Flight 1269 from CLT to DCA. Once again another delay at the last possible minute before boarding due to the plane going out of service/maintenance. Once the new plane boarded, we sat on the tarmac for 40min. I did not arrive to DCA until 12:33am. I spent over 12hours at the airport and I plan to never fly American Airlines again.

Book cheap flights from Colorado Springs to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Colorado Springs to Washington, D.C. found on KAYAK in the last 72 hours.
6/11Tue
2 stopsDelta
10h 11mCOS-IAD
$134
6/11Tue
1 stopUnited Airlines
5h 41mCOS-IAD
$186
5/15Wed
1 stopAmerican Airlines
15h 37mCOS-IAD
$192
5/21Tue
1 stopUnited Airlines
5h 54mCOS-IAD
$199
5/15Wed
1 stopAmerican Airlines
10h 46mCOS-IAD
$203
5/15Wed
2 stopsAmerican Airlines
14h 33mCOS-IAD
$208
6/3Mon
1 stopAmerican Airlines
10h 46mCOS-IAD
$218
6/1Sat
1 stopAmerican Airlines
15h 37mCOS-IAD
$231
5/20Mon
1 stopUnited Airlines
15h 13mCOS-IAD
$238
4/30Tue
1 stopDelta
7h 32mCOS-IAD
$244

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Last minute flights from Colorado Springs to Dulles Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Colorado Springs to Washington, D.C. that are departing in the next 10 days.
4/24Wed
multi-stopAmerican Airlines
6h 40mCOS-IAD
5/1Wed
multi-stopAmerican Airlines
9h 22mIAD-COS
$439
4/24Wed
multi-stopDelta
7h 32mCOS-IAD
5/1Wed
multi-stopDelta
13h 04mIAD-COS
$444
4/24Wed
multi-stopAmerican Airlines
6h 40mCOS-IAD
5/2Thu
multi-stopAmerican Airlines
9h 22mIAD-COS
$479
4/24Wed
multi-stopAmerican Airlines
8h 24mCOS-IAD
5/2Thu
multi-stopAmerican Airlines
9h 22mIAD-COS
$527
4/24Wed
multi-stopAmerican Airlines
8h 24mCOS-IAD
4/28Sun
multi-stopAmerican Airlines
13h 14mIAD-COS
$539
4/24Wed
multi-stopAmerican Airlines
11h 07mCOS-IAD
4/28Sun
multi-stopAmerican Airlines
13h 14mIAD-COS
$544
4/24Wed
multi-stopAmerican Airlines
8h 24mCOS-IAD
4/28Sun
multi-stopAmerican Airlines
8h 35mIAD-COS
$571
4/24Wed
multi-stopAmerican Airlines
16h 16mCOS-IAD
4/28Sun
multi-stopAmerican Airlines
15h 50mIAD-COS
$582
4/21Sun
multi-stopUnited Airlines
7h 00mCOS-IAD
4/22Mon
multi-stopUnited Airlines
6h 15mIAD-COS
$584
4/21Sun
multi-stopDelta
12h 31mCOS-IAD
4/22Mon
multi-stopDelta
7h 47mIAD-COS
$589

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Colorado Springs - Washington Dulles Airport Flights

Departure:

Colorado Springs (COS)United States

Destination:

Washington Dulles Airport (IAD)United States

Return flight deals:

Washington Dulles Airport - Colorado Springs

Cabin classes: