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$526+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DEN
Dec 22 — Dec 291
Mon 12/22
Mon 12/29
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 November 22, 2025.

This Mytrip deal was found by Cheapflights users on 11/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:35 pmLHR - DEN
1 stop28h 30mIcelandair
Tue 12/163:40 pmDEN - LHR
1 stop20h 50mIcelandair
Deal found 11/21$594
This Cheapflightsfares deal was found by Cheapflights users on 11/21. 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 12/1012:15 pmLHR - DEN
1 stop12h 50mIcelandair
Wed 1/73:40 pmDEN - LHR
1 stop20h 50mIcelandair
Deal found 11/21$604
This Gotogate deal was found by Cheapflights users on 11/22. 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.
Thu 12/48:35 pmLHR - DEN
1 stop28h 30mIcelandair
Sun 12/73:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 11/22$651
This Gotogate deal was found by Cheapflights users on 11/21. 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 12/812:15 pmLHR - DEN
1 stop12h 50mIcelandair
Tue 12/233:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 11/21$681
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 12/22:50 pmLHR - DEN
2 stops25h 05mMultiple Airlines
Wed 12/109:42 amDEN - LHR
1 stop14h 13mMultiple Airlines
Deal found 11/20$721
This TravelUp deal was found by Cheapflights users on 11/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:20 amLHR - DEN
1 stop20h 39mJetBlue
Mon 1/121:40 pmDEN - LHR
1 stop34h 15mJetBlue
Deal found 11/20$724
This OneTravel deal was found by Cheapflights users on 11/21. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 amLHR - DEN
2 stops17h 55mAir Canada
Tue 12/161:25 pmDEN - LHR
1 stop12h 05mAir Canada
Deal found 11/21$749
This United Airlines deal was found by Cheapflights users on 11/21. 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 12/87:30 amLHR - DEN
2 stops17h 37mUnited Airlines
Tue 12/237:05 pmDEN - LHR
1 stop33h 45mUnited Airlines
Deal found 11/21$752
This lol.travel deal was found by Cheapflights users on 11/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:40 amLHR - DEN
1 stop13h 55mMultiple Airlines
Thu 12/2511:15 amDEN - LHR
1 stop12h 55mMultiple Airlines
Deal found 11/21$764
This lol.travel deal was found by Cheapflights users on 11/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:10 amLHR - DEN
1 stop14h 45mLufthansa
Thu 12/255:35 pmDEN - LHR
Nonstop9h 05mLufthansa
Deal found 11/21$766
This lol.travel deal was found by Cheapflights users on 11/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:30 pmLHR - DEN
1 stop29h 07mAir Canada
Thu 12/259:45 amDEN - LHR
2 stops14h 25mAir Canada
Deal found 11/21$772
This Flighttix deal was found by Cheapflights users on 11/20. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:30 amLHR - ASE
2 stops17h 51mLufthansa
Wed 12/109:00 amASE - LHR
1 stop13h 55mLufthansa
Deal found 11/20$1,134

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 November 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$594
(Mytrip)

One-way from

$526
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$749

Good round-trip deal

$769 or less

Good one-way deal

$664 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. 2% potential increase in price ($21 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 November 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 November 22, 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 2/3

6:30 am-1:40 pm

1 stop14h 10m

Denver Intl

Thu 2/12

5:35 pm-9:40 am

Nonstop9h 05m

$716

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 2/2

7:30 am-1:40 pm

1 stop13h 10m

Denver Intl

Tue 2/17

5:35 pm-9:40 am

Nonstop9h 05m

$716

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 2/3

6:30 am-1:40 pm

1 stop14h 10m

Denver Intl

Mon 2/16

11:15 am-7:10 am

1 stop12h 55m

$720

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 2/3

7:40 am-2:35 pm

1 stop13h 55m

Denver Intl

Sat 2/14

11:20 am-6:40 am

1 stop12h 20m

$755

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 2/2

6:30 am-1:40 pm

1 stop14h 10m

Denver Intl

Sun 2/15

4:05 pm-11:15 am

1 stop12h 10m

$755

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Thu 2/5

6:30 am-1:40 pm

1 stop14h 10m

Denver Intl

Tue 2/17

5:35 pm-9:40 am

Nonstop9h 05m

$755

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Thu 3/5

11:10 am-6:55 pm

1 stop14h 45m

Denver Intl

Wed 3/25

11:15 am-7:10 am

1 stop13h 55m

$757

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 1/6

6:00 pm-10:23 am

1 stop23h 23m

Denver Intl

Tue 1/13

5:35 pm-9:40 am

Nonstop9h 05m

$773

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sun 2/1

3:30 pm-1:40 pm

1 stop29h 10m

Denver Intl

Tue 2/17

6:00 am-5:55 am

1 stop16h 55m

$775

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sun 1/25

3:30 pm-1:40 pm

1 stop29h 10m

Denver Intl

Mon 3/16

6:35 pm-9:40 am

Nonstop9h 05m

$779

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 45 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 $519). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $697). 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 November 22, 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 November 22, 2025.

The most flights from LHR to USCO are scheduled on a Wednesday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 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 November 22, 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
9,034 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,034 reviews
United Airlines
7.4
Good
9,034 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.0
Good
581 reviews
United Airlines
7.4
Good
9,034 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Iberia
7.0
Good
3,032 reviews
United Airlines
7.4
Good
9,034 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,579 reviews
United Airlines
7.4
Good
9,034 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,535 reviews
United Airlines
7.4
Good
9,034 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 United Airlines, Iberia, and American Airlines fly from London Heathrow Airport to Colorado in about 14h 10m. The time it takes to get you to your destination can typically vary by up to 3h 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 WestJet ($534), Air Canada ($537), and United Airlines ($542).

  • 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 - Durango La Plata County and London Heathrow - Colorado Springs.

  • 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 (92%), 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 $592 on average, our data indicates $4,865 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 $519). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $697). 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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Stansted to Boston flights
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Luton to Miami flights
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London City to Las Vegas flights

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 November 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$475Average$631FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$581Average$879FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$598Average$784FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$599Average$766FlexibilityNo cancel feeOn-time76%
IberiaCheapest$624Average$947FlexibilityNo cancel feeOn-time77%
DeltaCheapest$628Average$717FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$660Average$944FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$671Average$782FlexibilityNo cancel feeOn-time78%

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