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£399+ Cheap flights to Fort Collins

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights to Fort Collins
Explore the most affordable flight options available to Fort Collins. Find the lowest fares based on data from user searches, with prices last updated on 14 November 2025.

Sun 23/1120:35LHR - DEN
1 stop28h 30mIcelandair
Wed 10/1215:40DEN - LHR
1 stop20h 50mIcelandair
Deal found 13/11£441
Wed 10/1212:15LHR - DEN
1 stop12h 50mIcelandair
Tue 16/1215:40DEN - LHR
1 stop12h 10mIcelandair
Deal found 13/11£445
Wed 10/1212:15LHR - DEN
1 stop12h 50mIcelandair
Mon 15/1215:40DEN - LHR
1 stop20h 50mIcelandair
Deal found 13/11£445
Wed 10/1211:55LGW - DEN
1 stop13h 10mIcelandair
Wed 17/1215:40DEN - LGW
1 stop12h 15mIcelandair
Deal found 12/11£448
Wed 10/1212:15LHR - DEN
1 stop12h 50mIcelandair
Wed 17/1215:40DEN - LHR
1 stop12h 10mIcelandair
Deal found 12/11£451
Thu 20/1114:00LGW - DEN
1 stop25h 19mMultiple Airlines
Sun 23/1123:59DEN - LGW
1 stop27h 01mMultiple Airlines
Deal found 12/11£454
Wed 10/1211:55LGW - DEN
1 stop13h 10mIcelandair
Wed 7/115:40DEN - LGW
1 stop12h 15mIcelandair
Deal found 12/11£457
Tue 18/1120:35LHR - DEN
1 stop28h 30mIcelandair
Tue 2/1215:40DEN - LHR
1 stop12h 10mIcelandair
Deal found 12/11£458
Wed 10/1211:55LGW - DEN
1 stop13h 10mIcelandair
Tue 16/1215:40DEN - LGW
1 stop12h 15mIcelandair
Deal found 13/11£459
Wed 10/1212:15LHR - DEN
1 stop12h 50mIcelandair
Wed 7/115:40DEN - LHR
1 stop12h 10mIcelandair
Deal found 12/11£460
Thu 11/1211:55LGW - DEN
1 stop13h 10mIcelandair
Tue 16/1215:40DEN - LGW
1 stop12h 15mIcelandair
Deal found 13/11£467
Thu 11/1212:15LHR - DEN
1 stop12h 50mIcelandair
Tue 16/1215:40DEN - LHR
1 stop12h 10mIcelandair
Deal found 13/11£470

Flights to Fort Collins in 2025

Find the latest flights to Fort Collins in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 14 November 2025.

Return from

£438

One-way from

£399

Popular in

December

Cheapest in

September

Average price

£568
Icelandair
  • Icelandair
  • 29/4-7/5
  • 2 total stops
  • 49h 15m total
  • London to Denver
Search Deals
JetBlue
  • JetBlue
  • 25/3
  • 1 total stop
  • 20h 24m total
  • London to Fort Collins
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for return flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Locate flights to Fort Collins that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 14 November 2025.
Use the filters below to find and compare flights to Fort Collins that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 24/11

20:35-18:05

1 stop28h 30m

Denver Intl

Tue 9/12

15:40-10:50

1 stop12h 10m

£475

LondonDenver

LGW - DEN

LGWDEN

London Gatwick

Sat 6/12

14:00-08:24

1 stop25h 24m

Denver Intl

Wed 10/12

23:59-10:00

1 stop27h 01m

£476

LondonDenver

STN - DEN

STNDEN

London Stansted

Thu 8/1

06:30-18:05

2 stops18h 35m

Denver Intl

Wed 21/1

15:40-13:20

2 stops14h 40m

£517

LondonDenver

LTN - DEN

LTNDEN

London Luton

Thu 8/1

09:00-18:05

2 stops16h 05m

Denver Intl

Wed 21/1

15:40-17:05

2 stops18h 25m

£517

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 10/3

11:10-19:55

1 stop14h 45m

Denver Intl

Tue 24/3

18:35-09:40

Nonstop9h 05m

£548

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Wed 29/4

08:25-21:39

1 stop20h 14m

Denver Intl

Sun 3/5

23:59-20:45

1 stop13h 46m

£555

LondonDenver

LGW - DEN

LGWDEN

London Gatwick

Wed 6/5

15:40-18:55

1 stop34h 15m

Denver Intl

Sun 10/5

16:40-14:40

1 stop15h 00m

£567

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 2/12

11:10-14:35

1 stop34h 25m

Denver Intl

Mon 8/12

17:35-09:40

Nonstop9h 05m

£575

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 2/12

06:30-16:40

2 stops17h 10m

Denver Intl

Mon 8/12

11:15-07:10

1 stop12h 55m

£575

LondonDenver

LCY - DEN

LCYDEN

London City

Mon 12/1

09:50-00:30

2 stops21h 40m

Denver Intl

Tue 20/1

15:55-17:35

1 stop18h 40m

£577

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 60 results
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Best time to book a flight to Fort Collins

Have a flexible travel schedule? Discover the best time to fly to Fort Collins with our price prediction graph.
Estimated return 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 to Fort Collins

When is the best time to book a flight to Fort Collins?

Use this chart to determine the optimal time to book a return flight from London to Fort Collins. Price data was last updated on 7 November 2025.

To ensure you get the cheapest price possible for a flight to Fort Collins, you should look to book at least 57 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

How long is the flight to Fort Collins?

On average, a flight from London to Fort Collins takes 14 hours 45 minutes. Flights to Fort Collins from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Fort Collins?

Use this chart to determine the cheapest time to fly return from London to Fort Collins. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Fort Collins should consider flying on Thursday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Wednesday evenings, when prices are usually at their highest.

Weekly flight availability to Fort Collins

The most flights from London to Fort Collins are scheduled on a Wednesday (11 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (6 on average).

What are the most popular airlines that fly to Fort Collins?

The most popular airlines flying from London to Fort Collins are British Airways, Lufthansa and Icelandair.

British Airways
British Airways
From £441
Lufthansa
Lufthansa
From £411
Icelandair
Icelandair
From £365
United Airlines
United Airlines
From £345

What are the cheapest airlines that fly to Fort Collins?

The cheapest airlines flying from London to Fort Collins are Icelandair, Air Canada and Aer Lingus.

Rainfall in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Fort Collins ranges from 13.0 - 58.0 inches per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Fort Collins when rainfall is around 13.0 mm.

Temperature in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Fort Collins, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 14 November 2025.
See what other customers who have flown with Austrian Airlines, United Airlines, andIcelandair to the United States have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
868 reviews
Check prices

Entertainment

6.8

Crew

8.1

Overall

7.6

Comfort

7.3

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Austrian Airlines
7.6
Good
868 reviews
Austrian Airlines
7.6
Good
868 reviews
Check prices

Entertainment

6.8

Crew

8.1

Overall

7.6

Comfort

7.3

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
United Airlines
7.4
Good
9,016 reviews
Austrian Airlines
7.6
Good
868 reviews
Check prices

Entertainment

6.8

Crew

8.1

Overall

7.6

Comfort

7.3

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Icelandair
7.1
Good
578 reviews
Austrian Airlines
7.6
Good
868 reviews
Check prices

Entertainment

6.8

Crew

8.1

Overall

7.6

Comfort

7.3

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Lufthansa
6.8
Okay
7,572 reviews
Austrian Airlines
7.6
Good
868 reviews
Check prices

Entertainment

6.8

Crew

8.1

Overall

7.6

Comfort

7.3

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
British Airways
6.7
Okay
7,516 reviews
Austrian Airlines
7.6
Good
868 reviews
Check prices

Entertainment

6.8

Crew

8.1

Overall

7.6

Comfort

7.3

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

FAQs about flying to Fort Collins

  • Can I find cheaper flights to Fort Collins if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Fort Collins on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Fort Collins?

    Based on reviews from Cheapflights users, Delta is rated the highest out of the airlines that fly to Fort Collins.

  • How much is a return flight to Fort Collins?

    A return flight to Fort Collins will typically cost around £114, however they can be found for as little as £114.

  • Where does the fastest flight to Fort Collins depart from?

    For those looking to save time traveling to Fort Collins, London offers the quickest one-way flight (9 hours 50 minutes).

  • Does Denver Intl have car hire?

    Yes. Those touching down at Denver Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Denver Intl?

    Yes. Denver Intl has hotels nearby for those requiring accommodations. The Westin Denver International Airport is the closest property to Denver Intl (0.0 mi away from Denver Intl).

See more FAQs

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Certainly. Search results for flights to Fort Collins shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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