$100 Cheap Flights from Washington (IAD) to Colorado Springs (COS)

View $100 flight on Sun, May 25, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Colorado Springs (IAD-COS)

Prices were available within the past 7 days and start at $100 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, May 21 - Sun, May 25
IAD
Washington
COS
Colorado Springs
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select United flight, departing Wed, May 21 from Washington to Colorado Springs, returning Sun, May 25, priced at $218 found 1 day ago
American Airlines
Wed, Aug 27 - Sun, Aug 31
IAD
Washington
COS
Colorado Springs
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Aug 27 from Washington to Colorado Springs, returning Sun, Aug 31, priced at $218 found 1 day ago
American Airlines
Fri, May 30 - Wed, Jun 4
IAD
Washington
COS
Colorado Springs
$221 Roundtrip, found 10 hours ago
$221
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Fri, May 30 from Washington to Colorado Springs, returning Wed, Jun 4, priced at $221 found 10 hours ago
Delta
Mon, Nov 24 - Tue, Dec 2
IAD
Washington
COS
Colorado Springs
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Nov 24 from Washington to Colorado Springs, returning Tue, Dec 2, priced at $237 found 1 hour ago
United
Sat, Jun 7 - Sat, Jun 14
IAD
Washington
COS
Colorado Springs
$237 Roundtrip, found 2 hours ago
$237
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Jun 7 from Washington to Colorado Springs, returning Sat, Jun 14, priced at $237 found 2 hours ago
United
Wed, Jul 16 - Wed, Jul 23
IAD
Washington
COS
Colorado Springs
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jul 16 from Washington to Colorado Springs, returning Wed, Jul 23, priced at $239 found 2 days ago
American Airlines
Sat, Jun 7 - Sat, Jun 14
IAD
Washington
COS
Colorado Springs
$240 Roundtrip, found 2 hours ago
$240
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jun 7 from Washington to Colorado Springs, returning Sat, Jun 14, priced at $240 found 2 hours ago
Delta
Tue, Jun 24 - Tue, Jul 1
IAD
Washington
COS
Colorado Springs
$242 Roundtrip, found 2 days ago
$242
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Jun 24 from Washington to Colorado Springs, returning Tue, Jul 1, priced at $242 found 2 days ago
United
Tue, May 20 - Sun, May 25
IAD
Washington
COS
Colorado Springs
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select United flight, departing Tue, May 20 from Washington to Colorado Springs, returning Sun, May 25, priced at $244 found 2 days ago
Southwest Airlines
Fri, Aug 8 - Thu, Aug 14
IAD
Washington
COS
Colorado Springs
$263 Roundtrip, found 21 hours ago
$263
Roundtrip
found 21 hours ago
Select Southwest Airlines flight, departing Fri, Aug 8 from Washington to Colorado Springs, returning Thu, Aug 14, priced at $263 found 21 hours ago
Flights from Washington (IAD) to Colorado Springs (COS)
Origin airport
Washington Dulles Intl.
Destination airport
Colorado Springs
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$217
Distance
1460 mi

Washington to Colorado Springs Flights

The cheapest times to fly from Washington to Colorado Springs

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Colorado Springs are during the month of May. You can find some of the cheapest flights from Washington to Colorado Springs with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to Colorado Springs

Sunday is one of the best days to book for cheap flights from Washington to Colorado Springs: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to Colorado Springs

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Colorado Springs in 2025. You can also book with separate airlines for your outbound and return journeys, from $100 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Colorado Springs flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Colorado Springs airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS) cost?
Discover the latest flight deals from IAD to COS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to COS?
The cheapest flights from IAD to COS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to COS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IAD to COS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS)?
There are no daily nonstop flights departing from Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you’ll be soaring above the clouds in no time.
What day of the week has the most flights from IAD to COS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on a number of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS) last-minute?
Last-minute fares from IAD to COS are typically more expensive. To lock in the cheapest rates, start searching for flights ahead of time. That said, if you’re flexible with your travel dates, you may find a cheap ticket just before your departure.
Is it cheaper to book an IAD to COS flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to COS flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of travel planning. Just secure your flights and select from our wide range of stays, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Colorado Springs Airport (COS)?
In most cases, you can modify or cancel your IAD to COS flight. However, additional charges may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s fees and rules on flight changes, or if you need more details, go to our Customer Service portal.

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*Available to One Key members.