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 11/16. 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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Everything you should know

Cheapest round-trip
$247
Overall average: $621
Multiple Airlines
Sun 11/9Fri 11/14
IAD - COS • 1 stop
Cheapest one-way
$114
Typical prices: $153-$224
Multiple Airlines
Sun 11/16
IAD - COS • 1 stop
Top airlines
United Airlines
Cheapest • from $282 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 33% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
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

Sun, Nov 9 - Fri, Nov 14
Multiple Airlines Logo
10:54 pm - 10:31 amIAD-COS
13h 37m1 stop
Multiple Airlines Logo
10:41 am - 11:55 pmCOS-IAD
35h 14m2 stops
$247Multiple Airlines
Find Deal
Tue, Feb 10 - Sun, Feb 15
United Airlines Logo
2:24 pm - 7:03 pmIAD-COS
6h 39m1 stop
United Airlines Logo
5:50 am - 1:27 pmCOS-IAD
5h 37m1 stop
$282United Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
Multiple Airlines Logo
9:52 pm - 9:51 amIAD-COS
13h 59m1 stop
Multiple Airlines Logo
3:48 pm - 4:34 pmCOS-IAD
22h 46m2 stops
$301Multiple Airlines
Find Deal
Wed, Dec 24 - Thu, Jan 1
United Airlines Logo
5:20 pm - 9:11 pmIAD-COS
5h 51m1 stop
United Airlines Logo
8:50 pm - 5:19 amCOS-IAD
6h 29m1 stop
$306United Airlines
Find Deal
Tue, Nov 11 - Thu, Nov 13
Delta Logo
11:05 am - 8:40 pmIAD-COS
11h 35m2 stops
Delta Logo
1:42 pm - 12:16 amCOS-IAD
8h 34m1 stop
$318Delta
Find Deal
Tue, Nov 11 - Tue, Nov 18
Delta Logo
6:00 am - 5:22 pmIAD-COS
13h 22m2 stops
Delta Logo
6:02 pm - 9:10 amCOS-IAD
13h 08m2 stops
$323Delta
Find Deal
Thu, Nov 6 - Wed, Nov 12
Southwest Logo
5:05 am - 11:25 amIAD-COS
8h 20m1 stop
Southwest Logo
6:35 am - 5:05 pmCOS-IAD
8h 30m1 stop
$328Southwest
Find Deal
Thu, Nov 13 - Sun, Nov 16
American Airlines Logo
6:04 am - 11:48 amIAD-COS
7h 44m1 stop
American Airlines Logo
5:45 am - 4:11 pmCOS-IAD
8h 26m1 stop
$345American Airlines
Find Deal
Fri, Jan 16 - Mon, Jan 19
Southwest Logo
5:30 am - 11:20 amIAD-COS
7h 50m1 stop
Southwest Logo
11:10 am - 10:40 pmCOS-IAD
9h 30m1 stop
$366Southwest
Find Deal
Sat, Nov 8 - Tue, Nov 11
American Airlines Logo
6:24 am - 6:06 pmIAD-COS
13h 42m2 stops
American Airlines Logo
5:45 am - 4:49 pmCOS-IAD
9h 04m2 stops
$376American Airlines
Find Deal
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 $288 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $676 and $621 respectively.

Good to know

Low seasonApril
Cheapest flight$114
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 22% 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 $247 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, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Colorado Springs, with oneworld 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 $361 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 4241 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
7.0Food
8.6Crew
Airline reviews

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

2.0 MediocreThomas, Oct 2025SAT - STL
Read more Southwest reviews

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

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.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

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

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.

We were delayed for a “couple of maintenance issues.” They were resolved rather quickly but a computer glitch caused someone in the airport to have to bring a physical copy of the paperwork so we could leave. I don’t know where they had to drive from to get to our plane but it took forever & we were 1 1/2 hrs late in leaving. The flight itself was fine.

Because the plane was 90 degrees F, they would not let us board. I wish they had, because it meant we were delayed. It's Texas, of course it's hot. We would have survived.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

Our bags took a long time to get unloaded once we landed.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

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.

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

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