IAD - COS

$114 Find Cheap Flights from Washington Dulles Airport to Colorado Springs

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Colorado Springs departing on 11/24. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Colorado Springs

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Colorado Springs, 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 Washington, D.C. to Colorado Springs, as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Colorado Springs 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Colorado Springs

Wed, Sep 24 - Tue, Sep 30
United Airlines Logo
5:47 pm - 9:54 pmIAD-COS
6h 07m1 stop
United Airlines Logo
6:00 am - 1:51 pmCOS-IAD
5h 51m1 stop
$277United Airlines
Find Deal
Wed, Sep 24 - Tue, Sep 30
American Airlines Logo
5:40 pm - 10:08 pmIAD-COS
6h 28m1 stop
American Airlines Logo
6:02 am - 6:51 pmCOS-IAD
10h 49m2 stops
$282American Airlines
Find Deal
Wed, Sep 10 - Fri, Sep 12
United Airlines Logo
6:35 am - 10:56 amIAD-COS
6h 21m1 stop
United Airlines Logo
3:45 pm - 11:17 pmCOS-IAD
5h 32m1 stop
$283United Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 18
Delta Logo
6:00 am - 12:57 pmIAD-COS
8h 57m1 stop
Delta Logo
8:00 am - 11:34 pmCOS-IAD
13h 34m2 stops
$288Delta
Find Deal
Mon, Sep 29 - Sat, Oct 4
Southwest Logo
6:50 pm - 10:35 pmIAD-COS
5h 45m1 stop
Southwest Logo
3:50 pm - 11:00 pmCOS-IAD
5h 10m1 stop
$289Southwest
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Sun, Oct 5 - Tue, Oct 7
Delta Logo
7:20 am - 12:06 pmIAD-COS
6h 46m1 stop
Delta Logo
1:16 pm - 11:18 pmCOS-IAD
8h 02m1 stop
$305Delta
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Fri, Oct 31 - Fri, Nov 7
Southwest Logo
4:50 pm - 8:15 pmIAD-COS
5h 25m1 stop
Southwest Logo
5:30 am - 5:10 pmCOS-IAD
9h 40m1 stop
$311Southwest
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Tue, Nov 11 - Fri, Nov 14
Delta Logo
11:00 am - 9:20 pmIAD-COS
12h 20m2 stops
Delta Logo
1:40 pm - 12:07 amCOS-IAD
8h 27m1 stop
$313Delta
Find Deal
Mon, Sep 29 - Sat, Oct 4
Delta Logo
6:00 am - 12:06 pmIAD-COS
8h 06m1 stop
Delta Logo
6:00 am - 5:36 pmCOS-IAD
9h 36m2 stops
$316Delta
Find Deal
Thu, Sep 4 - Mon, Sep 8
 Logo
9:09 pm - 8:41 amIAD-COS
13h 32m1 stop
 Logo
9:11 am - 7:55 pmCOS-IAD
32h 44m2 stops
Booking Insights

KAYAK's insights & trends for Dulles Intl to Colorado Springs flights

Get data-powered insights and trends into flights from Dulles Intl to Colorado Springs 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 Washington Dulles Airport to Colorado Springs?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Colorado Springs clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington Dulles Airport to Colorado Springs, look for departures on Saturdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Colorado Springs, Wednesday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Colorado Springs, 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 Washington, D.C. Dulles Intl Airport to Colorado Springs is January, where tickets cost $304 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $606 and $513 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Colorado Springs, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Colorado Springs, you should book around 4 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$114
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 26% lower on average.
Flight from Washington Dulles Airport to Colorado Springs

When to book flights from Dulles Intl to Colorado Springs

Are your dates flexible? Find out the best times to travel from Dulles Intl to Colorado Springs 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 Washington Dulles Airport to Colorado Springs flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Colorado Springs was $114 for a one-way ticket and $277 for a round-trip.

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

    No

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

    Washington Dulles Airport airport is called Washington, D.C. Dulles Intl and the only airport in Colorado Springs is Colorado Springs.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Colorado Springs are Southwest and Delta. With an average price for the route of $385 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $288 and an overall rating of 7.9.

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

    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 Washington Dulles Airport to Colorado Springs.

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

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

    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 Colorado Springs with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and COS 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 Washington Dulles Airport to Colorado Springs?

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

Reviews of the top 4 airlines serving from Dulles Intl to Colorado Springs

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Colorado Springs. 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 Dulles Intl to Colorado Springs? 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 4246 reviews
8.0Comfort
8.1Boarding
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

6.0 GoodDavid, Aug 2025MCO - DEN
Read more Southwest reviews

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Other than a bit of a delay, everything was good. Again, the boarding process and picking seats is the only thing I don't enjoy.

If we are going to have to pay for luggage, make it easier to do. Put something on the app during check-in so I don't need to do it at the kiosk. I've done it twice recently and I ended up having to pay at the desk because something went wrong at the kiosk in Tampa.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Pitch was very small. Knees were on the seat back in front of me.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Standard. No different than a discount carrier on a short trip.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Everything you need to know for your flight from Dulles Intl to Colorado Springs

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