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$493+ Cheap flights from Heathrow (LHR) to Colorado

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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DEN
Nov 18 — Nov 251
Tue 11/18
Tue 11/25
1 adult, Economy
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Find flight deals from Heathrow to Colorado

Cheapest flights from Heathrow to Colorado
Explore the most affordable flight options available from Heathrow to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2025.

This Booking.com deal was found by Cheapflights users on 10/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:15 pmLHR - DEN
1 stop12h 50mIcelandair
Mon 9/144:40 pmDEN - LHR
1 stop12h 15mIcelandair
Deal found 10/19$620
This Gotogate deal was found by Cheapflights users on 10/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:35 pmLHR - DEN
1 stop28h 30mIcelandair
Mon 12/13:40 pmDEN - LHR
1 stop20h 50mIcelandair
Deal found 10/19$625
This Gotogate deal was found by Cheapflights users on 10/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:15 pmLHR - DEN
1 stop12h 50mIcelandair
Tue 11/253:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/19$626
This Booking.com deal was found by Cheapflights users on 10/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:35 pmLHR - DEN
1 stop28h 30mIcelandair
Wed 11/263:40 pmDEN - LHR
1 stop20h 50mIcelandair
Deal found 10/19$627
This Booking.com deal was found by Cheapflights users on 10/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:35 pmLHR - DEN
1 stop28h 30mIcelandair
Tue 11/253:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/19$629
This The Travel House deal was found by Cheapflights users on 10/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:15 pmLHR - DEN
1 stop12h 50mIcelandair
Wed 11/123:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/19$630
This lastminute.com deal was found by Cheapflights users on 10/19. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:35 pmLHR - DEN
1 stop28h 30mIcelandair
Mon 11/243:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/19$632
This The Travel House deal was found by Cheapflights users on 10/18. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:15 pmLHR - DEN
1 stop12h 50mIcelandair
Thu 11/133:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/18$633
This FlightHub deal was found by Cheapflights users on 10/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:35 pmLHR - DEN
1 stop28h 30mIcelandair
Mon 11/243:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/18$641
This Justfly.com deal was found by Cheapflights users on 10/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:15 pmLHR - DEN
1 stop12h 50mIcelandair
Tue 11/183:40 pmDEN - LHR
1 stop20h 50mIcelandair
Deal found 10/18$642
This FlightHub deal was found by Cheapflights users on 10/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:15 pmLHR - DEN
1 stop12h 50mIcelandair
Mon 11/173:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 10/19$643
This Kiwi.com deal was found by Cheapflights users on 10/18. 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.
Tue 12/27:25 amLHR - COS
2 stops17h 53mLufthansa
Tue 12/91:35 pmCOS - LHR
1 stop13h 05mLufthansa
Deal found 10/18$1,066

Cheap flight deals from Heathrow to Colorado

Keep the following information in mind while searching for Heathrow to Colorado flight deals. Data was last updated October 19, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$620
(Booking.com)

One-way from

$493
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$778

Good round-trip deal

$693 or less

Good one-way deal

$606 or less
Provider with most accurate pricing for London (LON)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Denver Intl flights.
Search Deals
From London Heathrow to Colorado
Search Deals
One-way flight from London Heathrow to Colorado
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Colorado.
Search Deals
Price to beat on a one-way flight from London Heathrow to Colorado.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Colorado 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 October 19, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Colorado that are best for you.

Fly from

Heathrow

Fly to

Colorado

Route

Depart

Return

Price

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Thu 12/4

8:35 pm-6:05 pm

1 stop28h 30m

Denver Intl

Thu 12/11

3:40 pm-10:50 am

1 stop12h 10m

$658

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 11/24

12:15 pm-6:05 pm

1 stop12h 50m

Denver Intl

Thu 11/27

3:40 pm-10:50 am

1 stop12h 10m

$665

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sun 4/5

9:25 pm-6:55 pm

1 stop28h 30m

Denver Intl

Mon 4/20

4:40 pm-8:20 pm

1 stop20h 40m

$668

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sun 12/14

8:35 pm-6:05 pm

1 stop28h 30m

Denver Intl

Wed 1/7

3:40 pm-10:50 am

1 stop12h 10m

$678

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 12/15

12:15 pm-6:05 pm

1 stop12h 50m

Denver Intl

Mon 1/5

3:40 pm-10:50 am

1 stop12h 10m

$686

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sat 11/22

12:15 pm-6:05 pm

1 stop12h 50m

Denver Intl

Thu 11/27

3:40 pm-10:50 am

1 stop12h 10m

$699

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 11/17

7:40 am-2:35 pm

1 stop13h 55m

Denver Intl

Mon 12/1

5:35 pm-9:40 am

Nonstop9h 05m

$701

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 11/17

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 12/1

5:35 pm-9:40 am

Nonstop9h 05m

$731

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Thu 12/4

9:00 am-7:55 pm

2 stops17h 55m

Denver Intl

Thu 12/11

11:15 am-11:20 am

2 stops17h 05m

$732

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 11/17

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 12/1

5:35 pm-9:40 am

Nonstop9h 05m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/18

Showing 1-10 of 31 results
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Best time to book a flight from Heathrow to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Heathrow 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 London Heathrow Airport to Colorado

What is the cheapest month to book a flight from London Heathrow Airport to Colorado?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Colorado (average of $509). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $710). 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 LHR to CO?

Find hourly flight availability from Heathrow to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 19, 2025.

It’s optimal to fly from London Heathrow Airport to Colorado in the evening. By choosing this option you can save up to 51% on the cost of your flight, compared to a flight at noon.

Weekly flight availability from London Heathrow Airport to Colorado

Explore weekly flight availability from Heathrow to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 19, 2025.

The most flights from LHR to USCO are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 on average).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated October 19, 2025.
Get a feel of what it's like to fly with United Airlines, Icelandair, and Iberia from London Heathrow Airport to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.1
Good
558 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Iberia
7.0
Good
2,996 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
7,502 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
7,461 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Colorado. 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 London Heathrow Airport to Colorado?

    Airlines like Icelandair, Lufthansa, and Air Canada fly from London Heathrow Airport to Colorado in about 16h 50m. The time it takes to get you to your destination can typically vary by up to 11h 40m. The distance between London Heathrow Airport and Colorado is about 4711 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London Heathrow Airport to Colorado one-way?

    The cheapest airlines for a one-way flight from London Heathrow Airport to Colorado are JetBlue ($504), Austrian Airlines ($507), and Virgin Atlantic ($846).

  • What are the most popular routes from London Heathrow Airport to Colorado?

    The most popular flight routes from London Heathrow Airport to Colorado are London Heathrow - Denver Intl, London Heathrow - Colorado Springs and London Heathrow - Durango La Plata County.

  • What are the most reliable airlines from London Heathrow Airport to Colorado?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Colorado on time: Austrian Airlines (90%), Air Canada (87%), Brussels Airlines (87%).

  • What are the cheapest flights from London Heathrow Airport to Colorado?

    Looking at all options, your cheapest flight can be booked for $515. While the most popular route (London Heathrow - Denver Intl) can be booked for $616 on average, our data indicates $4,810 when flying from London Heathrow Airport to Colorado.

  • Can I find deals for flights from Heathrow to Colorado that include hotel bookings?

    Yes. In addition to deals on Heathrow to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Colorado.

  • Can I find deals for business class flights from Heathrow to Colorado?

    Yes. Cheapflights offers flight deals from Heathrow to Colorado 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 London Heathrow Airport to Colorado?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Colorado (average of $509). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $710). 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

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Alternative routes for Heathrow to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Heathrow to Colorado

Discover the top 8 airlines that operate flights from Heathrow to Colorado. 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 October 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$475Average$625FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$598Average$784FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$599Average$848FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$599Average$764FlexibilityNo cancel feeOn-time76%
IberiaCheapest$624Average$947FlexibilityNo cancel feeOn-time77%
DeltaCheapest$628Average$717FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$660Average$919FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$671Average$782FlexibilityNo cancel feeOn-time78%

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