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$560+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DEN
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap 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 December 16, 2025.

This deal was found by Cheapflights users on 12/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:35 pmLHR - DEN
1 stop17h 03mUnited Airlines
Thu 1/89:40 amDEN - LHR
1 stop13h 15mUnited Airlines
Deal found 12/16$898
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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.
Sun 12/288:15 pmLHR - DEN
1 stop25h 20mLufthansa
Fri 1/95:35 pmDEN - LHR
Nonstop9h 05mLufthansa
Deal found 12/14$928
This oojo deal was found by Cheapflights users on 12/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 pmLHR - DEN
2 stops34h 24mIcelandair
Wed 1/213:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 12/14$934
This JetBlue deal was found by Cheapflights users on 12/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:20 amLHR - DEN
1 stop19h 17mJetBlue
Mon 1/1211:35 amDEN - LHR
1 stop14h 55mJetBlue
Deal found 12/14$939
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:10 pmLHR - DEN
1 stop15h 16mBritish Airways
Wed 1/213:17 pmDEN - LHR
1 stop13h 23mBritish Airways
Deal found 12/16$940
This oojo deal was found by Cheapflights users on 12/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 pmLHR - DEN
2 stops34h 24mIcelandair
Fri 1/97:00 amDEN - LHR
2 stops20h 50mIcelandair
Deal found 12/14$965
This JetBlue deal was found by Cheapflights users on 12/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:20 amLHR - DEN
1 stop19h 17mJetBlue
Sun 1/1111:35 amDEN - LHR
1 stop14h 55mJetBlue
Deal found 12/14$979
This Trip.com deal was found by Cheapflights users on 12/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:00 amLHR - DEN
2 stops17h 55mAir Canada
Thu 1/811:15 amDEN - LHR
1 stop12h 55mAir Canada
Deal found 12/14$982
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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.
Sun 12/2811:35 amLHR - DEN
Nonstop9h 50mMultiple Airlines
Fri 1/95:35 pmDEN - LHR
Nonstop9h 05mMultiple Airlines
Deal found 12/14$992
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:35 amLHR - COS
2 stops22h 24mUnited Airlines
Mon 12/291:48 pmCOS - LHR
1 stop12h 52mUnited Airlines
Deal found 12/15$1,728
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:35 amLHR - COS
1 stop13h 43mUnited Airlines
Mon 12/298:20 amCOS - LHR
1 stop18h 20mUnited Airlines
Deal found 12/15$1,742
This British Airways deal was found by Cheapflights users on 12/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:25 amLHR - COS
2 stops40h 05mBritish Airways
Sun 12/284:46 pmCOS - LHR
1 stop32h 49mBritish Airways
Deal found 12/15$1,746

Find flight deals from Heathrow to Colorado

Keep the following information in mind while searching for Heathrow to Colorado flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$701
(Travcart)

One-way from

$560
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$957

Good round-trip deal

$847 or less

Good one-way deal

$683 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. 0% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 16, 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

Tue 1/20

6:35 am-2:35 pm

1 stop15h 00m

Denver Intl

Tue 1/27

11:15 am-6:40 am

1 stop12h 25m

$731

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 3/10

11:10 am-7:55 pm

1 stop14h 45m

Denver Intl

Tue 3/24

6:35 pm-9:40 am

Nonstop9h 05m

$731

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Wed 1/21

6:35 am-2:35 pm

1 stop15h 00m

Denver Intl

Tue 3/17

6:35 pm-9:40 am

Nonstop9h 05m

$731

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Wed 1/14

7:40 am-2:35 pm

1 stop13h 55m

Denver Intl

Thu 3/19

5:20 pm-1:00 pm

1 stop13h 40m

$736

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 1/19

7:05 pm-10:24 pm

2 stops34h 19m

Denver Intl

Sun 1/25

4:30 pm-8:35 am

1 stop33h 05m

$753

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 1/20

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Wed 3/18

6:35 pm-9:40 am

Nonstop9h 05m

$763

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 1/12

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 3/16

9:46 am-1:30 pm

1 stop21h 44m

$763

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 1/19

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 1/26

5:35 pm-9:40 am

Nonstop9h 05m

$763

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 1/19

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Tue 3/17

7:45 am-5:55 am

1 stop16h 10m

$763

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 1/20

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 1/26

5:35 pm-9:40 am

Nonstop9h 05m

$763

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 50 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 $507). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $694). 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 December 16, 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 December 16, 2025.

The most flights from LHR to USCO are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from London Heathrow Airport to Colorado?

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 December 16, 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
9,092 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Icelandair
7.0
Good
591 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Iberia
7.0
Good
3,051 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Lufthansa
6.8
Okay
7,632 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
British Airways
6.7
Okay
7,583 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 Lufthansa, United Airlines, and Iberia fly from London Heathrow Airport to Colorado in about 14h 45m. The time it takes to get you to your destination can typically vary by up to 6h 57m. The distance between London Heathrow Airport and Colorado is about 4655 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 Icelandair ($484), Aer Lingus ($532), and Lufthansa ($570).

  • 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: American Airlines (91%), Aer Lingus (91%), Finnair (91%).

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

    Looking at all options, your cheapest flight can be booked for $609. While the most popular route (London Heathrow - Denver Intl) can be booked for $537 on average, our data indicates $1,331 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 $507). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $694). 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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Gatwick to Las Vegas flights
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London City to Las Vegas flights
Heathrow to Philadelphia flights

Top 7 airlines flying from Heathrow to Colorado

Discover the top 7 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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$475Average$631FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$576Average$821FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$598Average$769FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$599Average$767FlexibilityNo cancel feeOn-time76%
IberiaCheapest$624Average$947FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$660Average$944FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$671Average$915FlexibilityNo cancel feeOn-time78%

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