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$49+ Cheap flights from Washington, D.C. (WAS) to Fort Collins, CO

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — DEN
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Fort Collins are usually found in February or August, booked 76 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Washington, D.C. to Fort Collins

Cheapest flights from Washington, D.C. to Fort Collins
Explore the most affordable flight options available from Washington, D.C. to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.

This Frontier deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Wed 2/257:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 2/5$103
This Super.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/182:00 pm
DCA
-
DEN
Nonstop4h 22m
Frontier
Wed 2/257:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 2/5$106
This Kiwi.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Thu 4/234:36 pm
DEN
-
DCA
Nonstop3h 23m
Frontier
Deal found 2/7$107
This Orbitz deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 pm
DCA
-
DEN
Nonstop4h 11m
Frontier
Sun 5/37:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 2/7$108
This Super.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Fri 3/1311:37 am
DEN
-
DCA
Nonstop3h 22m
Frontier
Deal found 2/5$109
This Super.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Sat 3/284:38 pm
DEN
-
DCA
Nonstop3h 21m
Frontier
Deal found 2/5$110
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Wed 3/47:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 2/5$111
This Cheapflightsfares deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/128:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Tue 3/177:35 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 2/7$112
This Frontier deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:00 pm
DCA
-
DEN
Nonstop4h 22m
Frontier
Tue 3/37:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 2/5$113
This Super.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Tue 3/37:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
Deal found 2/5$115
This Cheapflightsfares deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 am
DCA
-
DEN
Nonstop4h 12m
Frontier
Sat 5/97:35 am
DEN
-
DCA
Nonstop3h 25m
Frontier
Deal found 2/7$116
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Fri 3/611:37 am
DEN
-
DCA
Nonstop3h 22m
Frontier
Deal found 2/5$117

Find flight deals from Washington, D.C. to Fort Collins

Keep the following information in mind while searching for Washington, D.C. to Fort Collins flight deals. Data was last updated February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$103
(Frontier)

One-way from

$49
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$237
Provider with most accurate pricing for Washington, D.C. (WAS)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Denver Intl flights.
Search Deals
From Washington, D.C. (WAS) to Fort Collins
Search Deals
One-way flight from Washington, D.C. (WAS) to Fort Collins
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Fort Collins that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Fort Collins that are best for you.

Fly from

Washington, D.C.

Fly to

Fort Collins

Route

Depart

Return

Price

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 4/23

10:35 pm-12:44 am

Nonstop4h 09m

Denver Intl

Sat 4/25

7:45 am-1:14 pm

Nonstop3h 29m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Wed 4/15

8:12 pm-10:15 pm

Nonstop4h 03m

Denver Intl

Sun 5/3

11:59 pm-5:28 am

Nonstop3h 29m

$197

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 5/13

6:09 am-11:00 am

1 stop6h 51m

Denver Intl

Sat 5/16

12:00 pm-9:45 pm

1 stop7h 45m

$217

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 5/8

8:12 pm-10:15 pm

Nonstop4h 03m

Denver Intl

Mon 5/11

11:59 pm-5:28 am

Nonstop3h 29m

$217

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Sun 5/3

7:00 am-3:30 pm

1 stop10h 30m

Denver Intl

Wed 5/6

11:08 pm-9:44 am

1 stop8h 36m

$219

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Mon 5/4

7:00 am-3:30 pm

1 stop10h 30m

Denver Intl

Wed 5/6

11:08 pm-7:59 am

1 stop6h 51m

$219

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 5/13

7:00 am-3:30 pm

1 stop10h 30m

Denver Intl

Sun 5/17

11:08 pm-11:10 am

1 stop10h 02m

$219

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 4/22

1:20 pm-10:13 pm

1 stop10h 53m

Denver Intl

Fri 5/1

11:08 pm-9:44 am

1 stop8h 36m

$219

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Wed 3/25

6:14 am-11:25 am

1 stop7h 11m

Denver Intl

Wed 3/25

11:55 pm-10:20 am

1 stop8h 25m

$237

Washington, D.C.Denver

DCA - DEN

DCADEN

Washington, D.C. Reagan-National

Tue 3/31

6:59 am-1:34 pm

1 stop8h 35m

Denver Intl

Tue 3/31

12:35 am-8:43 am

1 stop6h 08m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 59 results
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Best time to book a flight from Washington, D.C. to Fort Collins

Have a flexible travel schedule? Discover the best time to fly to Fort Collins from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Fort Collins

How far ahead should I book a flight from Washington, D.C. to Fort Collins?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Fort Collins. Price data was last updated on January 30, 2026.

The price you pay for your flight from Washington, D.C. to Fort Collins may vary depending on when you book. For the best chance of a lower fare, look to book 35 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. to Fort Collins?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Fort Collins (average of $76). Flying from Washington, D.C. to Fort Collins in June is currently the most expensive (average of $173). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to FC9?

Find hourly flight availability from Washington, D.C. to Fort Collins. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 8, 2026.

One of the essential ways to save on airfare from Washington, D.C. to Fort Collins is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 13% on airfare.

What is the cheapest day to fly from Washington, D.C. to Fort Collins?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Fort Collins. Price data was last updated on February 7, 2026.

Travelers seeking maximum savings on their Washington, D.C. to Fort Collins flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Fort Collins

Get insights into the airlines that provide service to Fort Collins. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fort Collins. Reviews last updated February 8, 2026.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Washington, D.C. to Fort Collins by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,254 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,249 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,896 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,052 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Fort Collins. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Fort Collins?

    Airlines like United Airlines, Delta, and JetBlue fly from Washington, D.C. to Fort Collins in about 4h 09m. The time it takes to get you to your destination can typically vary by up to 6h 21m. There are 1448 mi between Washington, D.C. and Fort Collins. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Washington, D.C. to Fort Collins one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $59. Users have also found prices from $82 and $88 on JetBlue and Southwest, respectively.

  • What are the most popular routes from Washington, D.C. to Fort Collins?

    The most popular flight routes from Washington, D.C. to Fort Collins are Baltimore/Washington - Denver Intl, Washington, D.C. Dulles Intl - Denver Intl and Washington, D.C. Reagan-National - Denver Intl.

  • What are the most reliable airlines from Washington, D.C. to Fort Collins?

    The top 3 most reliable airlines when flying from Washington, D.C. to Fort Collins are Ethiopian Air (91%), United Airlines (85%) and Avianca (85%).

  • What are the cheapest flights from Washington, D.C. to Fort Collins?

    On average you can expect to pay $925 for a flight from Washington, D.C. to Fort Collins. The cheapest flight overall is $128 while the most popular route, (Baltimore/Washington - Denver Intl) is currently priced at $151.

  • Can I find deals for flights from Washington, D.C. to Fort Collins that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Fort Collins flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Fort Collins?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Fort Collins.

  • Can I find deals for business class flights from Washington, D.C. to Fort Collins?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Fort Collins by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Fort Collins?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Fort Collins (average of $76). Flying from Washington, D.C. to Fort Collins in June is currently the most expensive (average of $173). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Washington, D.C. to Fort Collins

Discover the top 6 airlines that operate flights from Washington, D.C. to Fort Collins. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$235FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$320FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$166Average$304FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$340FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$188Average$388FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$325Average$578FlexibilityNo cancel feeOn-time62%

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