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$524+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DEN
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$595
(United Airlines)

One-way from

$524
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$653

Good round-trip deal

$681 or less

Good one-way deal

$651 or less
Provider with most accurate pricing for London (LON)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Denver Intl flights.
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From London Heathrow to Colorado
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One-way flight from London Heathrow to Colorado
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from London Heathrow to Colorado.
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Price to beat on a one-way flight from London Heathrow to Colorado.
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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 January 15, 2026.

This United Airlines deal was found by Cheapflights users on 1/15. 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.
Sun 3/13:30 pm
LHR
-
DEN
1 stop29h 10m
United Airlines
Sun 3/86:35 pm
DEN
-
LHR
Nonstop9h 05m
United Airlines
Deal found 1/15$595
This deal was found by Cheapflights users on 1/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1912:25 pm
LHR
-
DEN
Nonstop10h 05m
British Airways
Sun 3/296:40 pm
DEN
-
LHR
Nonstop8h 55m
British Airways
Deal found 1/15$596
This Globehunters deal was found by Cheapflights users on 1/14. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:30 pm
LHR
-
DEN
1 stop28h 30m
Lufthansa
Mon 3/96:35 pm
DEN
-
LHR
Nonstop9h 05m
Lufthansa
Deal found 1/14$597
This TravelUp deal was found by Cheapflights users on 1/15. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1410:45 am
LHR
-
DEN
1 stop17h 21m
Virgin Atlantic
Sun 2/223:59 pm
DEN
-
LHR
1 stop35h 01m
Virgin Atlantic
Deal found 1/15$598
This The Travel House deal was found by Cheapflights users on 1/14. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/99:55 am
LHR
-
DEN
1 stop14h 47m
Iberia
Mon 2/167:00 am
DEN
-
LHR
2 stops19h 40m
Iberia
Deal found 1/14$599
This Cheapflightsfares deal was found by Cheapflights users on 1/14. 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.
Fri 2/2011:35 am
LHR
-
DEN
Nonstop9h 50m
Lufthansa
Mon 2/238:20 pm
DEN
-
LHR
1 stop13h 45m
Lufthansa
Deal found 1/14$600
This British Airways deal was found by Cheapflights users on 1/15. 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.
Sun 3/18:15 am
LHR
-
DEN
2 stops20h 21m
British Airways
Mon 3/94:43 pm
DEN
-
LHR
1 stop12h 57m
British Airways
Deal found 1/15$601
This Globehunters deal was found by Cheapflights users on 1/14. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:25 pm
LHR
-
DEN
1 stop24h 55m
Lufthansa
Wed 5/65:35 pm
DEN
-
LHR
Nonstop9h 05m
Lufthansa
Deal found 1/14$602
This TravelUp deal was found by Cheapflights users on 1/15. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/141:35 pm
LHR
-
DEN
1 stop15h 30m
Multiple Airlines
Sun 2/225:35 pm
DEN
-
LHR
Nonstop9h 05m
Multiple Airlines
Deal found 1/15$604
This The Travel House deal was found by Cheapflights users on 1/14. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:50 am
LHR
-
DEN
2 stops20h 05m
Brussels Airlines
Thu 2/1910:20 am
DEN
-
LHR
1 stop13h 00m
Brussels Airlines
Deal found 1/14$605
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2211:35 am
LHR
-
DEN
Nonstop9h 50m
United Airlines
Wed 2/45:35 pm
DEN
-
LHR
Nonstop9h 05m
United Airlines
Deal found 1/14$606
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2411:35 am
LHR
-
DEN
Nonstop9h 50m
United Airlines
Tue 1/275:35 pm
DEN
-
LHR
Nonstop9h 05m
United Airlines
Deal found 1/14$607

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 January 15, 2026.
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

Sun 3/1

8:15 am-9:36 pm

2 stops20h 21m

Denver Intl

Mon 3/9

10:20 am-11:40 am

1 stop19h 20m

$602

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 2/9

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Thu 2/19

5:35 pm-9:40 am

Nonstop9h 05m

$606

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 2/9

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 2/16

5:35 pm-9:40 am

Nonstop9h 05m

$606

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sun 3/1

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Mon 3/9

6:35 pm-9:40 am

Nonstop9h 05m

$606

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Fri 1/30

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Thu 2/12

5:35 pm-9:40 am

Nonstop9h 05m

$607

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Fri 5/1

2:50 pm-5:45 pm

Nonstop9h 55m

Denver Intl

Thu 5/14

8:20 pm-12:20 pm

Nonstop9h 00m

$623

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Wed 5/6

2:50 pm-5:45 pm

Nonstop9h 55m

Denver Intl

Fri 5/15

9:40 am-6:30 am

1 stop13h 50m

$627

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 5/18

9:25 pm-7:00 pm

1 stop28h 35m

Denver Intl

Tue 6/2

8:10 pm-8:20 pm

1 stop17h 10m

$628

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sat 2/28

11:35 am-2:25 pm

Nonstop9h 50m

Denver Intl

Sat 3/7

5:35 pm-9:40 am

Nonstop9h 05m

$633

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Wed 5/13

12:00 pm-6:15 pm

1 stop13h 15m

Denver Intl

Sat 5/23

6:40 pm-10:35 am

Nonstop8h 55m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 58 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Colorado (average of $517). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $685). 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 January 15, 2026.

When flying from London Heathrow Airport to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 January 15, 2026.

The most flights from LHR to USCO are scheduled on a Monday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 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 January 15, 2026.
Get a feel of what it's like to fly with United Airlines, American Airlines, and Icelandair 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
9,164 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,164 reviews
United Airlines
7.4
Good
9,164 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,132 reviews
United Airlines
7.4
Good
9,164 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
596 reviews
United Airlines
7.4
Good
9,164 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,717 reviews
United Airlines
7.4
Good
9,164 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,676 reviews
United Airlines
7.4
Good
9,164 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 British Airways, United Airlines, and Austrian Airlines fly from London Heathrow Airport to Colorado in about 9h 50m. The time it takes to get you to your destination can typically vary by up to 10h 31m. 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 Aer Lingus ($532), Austrian Airlines ($566), 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 - Aspen Pitkin 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 $567. While the most popular route (London Heathrow - Denver Intl) can be booked for $495 on average, our data indicates $1,215 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Colorado (average of $517). Flying from London Heathrow Airport to Colorado in July is currently the most expensive (average of $685). 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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London City to Las Vegas flights
Stansted to Orlando flights
Gatwick to San Francisco flights
Heathrow to Nashville flights
London City to Boston flights
Luton to Los Angeles flights
Gatwick to Dallas/Fort Worth flights
Heathrow to Fort Lauderdale flights
Stansted to Boston flights
Heathrow to Philadelphia flights

Top 6 airlines flying from Heathrow to Colorado

Discover the top 6 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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$406Average$907FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$576Average$812FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$596Average$631FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$598Average$801FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$599Average$767FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$662Average$910FlexibilityNo cancel feeOn-time71%

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