HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$573+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DEN
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Heathrow to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$620
(TravelUp)

One-way from

$573
(KAYAK)

Popular in

August

Cheapest in

March

Average price

$752

Good round-trip deal

$720 or less

Good one-way deal

$754 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. 15% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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

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 April 17, 2025.

This TravelUp deal was found by Cheapflights users on 4/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/127:30 amLHR - DEN
1 stop15h 05mLufthansa
Mon 5/198:15 pmDEN - LHR
Nonstop9h 05mLufthansa
Deal found 4/16$620
This TravelUp deal was found by Cheapflights users on 4/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/127:30 amLHR - DEN
1 stop15h 05mMultiple Airlines
Mon 5/195:50 pmDEN - LHR
1 stop15h 35mMultiple Airlines
Deal found 4/16$623
This The Travel House deal was found by Cheapflights users on 4/17. 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 11/1012:15 pmLHR - DEN
1 stop12h 50mIcelandair
Tue 11/183:40 pmDEN - LHR
1 stop12h 10mIcelandair
Deal found 4/17$630
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:25 amLHR - DEN
1 stop13h 20mUnited Airlines
Wed 5/75:35 pmDEN - LHR
Nonstop9h 05mUnited Airlines
Deal found 4/16$640
This SWISS deal was found by Cheapflights users on 4/16. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/68:45 amLHR - DEN
2 stops19h 55mSWISS
Mon 5/1211:55 amDEN - LHR
2 stops37h 00mSWISS
Deal found 4/16$647
This OneTravel deal was found by Cheapflights users on 4/16. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/308:40 amLHR - DEN
2 stops18h 25mAir Canada
Wed 5/77:45 amDEN - LHR
2 stops15h 45mAir Canada
Deal found 4/16$649
This Austrian Airlines deal was found by Cheapflights users on 4/17. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/69:05 amLHR - DEN
2 stops42h 00mAustrian Airlines
Mon 5/1211:20 amDEN - LHR
1 stop17h 25mAustrian Airlines
Deal found 4/17$650
This TravelUp deal was found by Cheapflights users on 4/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/62:50 pmLHR - DEN
Nonstop9h 45mBrussels Airlines
Mon 5/128:15 pmDEN - LHR
Nonstop9h 05mBrussels Airlines
Deal found 4/16$658
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 9/101:35 pmLHR - DEN
Nonstop9h 50mIberia
Wed 9/246:35 pmDEN - LHR
Nonstop9h 00mIberia
Deal found 4/17$669
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/266:30 amLHR - DEN
2 stops16h 39mDelta
Tue 9/3010:45 amDEN - LHR
1 stop13h 00mDelta
Deal found 4/16$685
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/11:35 pmLHR - DEN
Nonstop9h 50mBritish Airways
Wed 10/112:20 pmDEN - LHR
1 stop12h 00mBritish Airways
Deal found 4/16$693
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2611:45 amLHR - DEN
1 stop13h 22mKLM
Tue 9/3012:20 pmDEN - LHR
1 stop13h 30mKLM
Deal found 4/17$704

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 April 17, 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

Mon 5/12

7:30 am-3:35 pm

1 stop15h 05m

Denver Intl

Mon 5/19

8:15 pm-12:20 pm

Nonstop9h 05m

$620

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Mon 5/12

7:30 am-3:35 pm

1 stop15h 05m

Denver Intl

Mon 5/19

5:50 pm-4:25 pm

1 stop15h 35m

$623

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 5/6

8:45 am-8:05 pm

2 stops18h 20m

Denver Intl

Sat 5/17

9:40 am-6:30 am

1 stop13h 50m

$633

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Wed 4/30

7:25 am-1:45 pm

1 stop13h 20m

Denver Intl

Wed 5/7

5:35 pm-9:40 am

Nonstop9h 05m

$640

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 5/6

8:45 am-9:40 pm

2 stops19h 55m

Denver Intl

Mon 5/12

11:55 am-7:55 am

2 stops37h 00m

$647

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 5/6

9:05 am-8:05 pm

2 stops42h 00m

Denver Intl

Mon 5/12

11:20 am-11:45 am

1 stop17h 25m

$650

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Tue 5/6

2:50 pm-5:35 pm

Nonstop9h 45m

Denver Intl

Tue 5/13

8:15 pm-12:20 pm

Nonstop9h 05m

$660

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Sun 8/31

1:35 pm-4:25 pm

Nonstop9h 50m

Denver Intl

Tue 9/30

6:35 pm-10:35 am

Nonstop9h 00m

$666

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Fri 5/9

1:05 pm-6:55 pm

1 stop12h 50m

Denver Intl

Mon 5/26

4:40 pm-11:55 am

1 stop12h 15m

$667

LondonDenver

LHR - DEN

LHRDEN

London Heathrow

Fri 5/2

6:30 am-2:05 pm

2 stops14h 35m

Denver Intl

Tue 5/6

2:35 pm-1:10 pm

2 stops15h 35m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 32 results
1
2
3
4

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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Colorado (average of $197). Flying from London Heathrow Airport to Colorado in March is currently the most expensive (average of $278). 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 April 17, 2025.

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 April 17, 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).

Rainfall in Colorado by month

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

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

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

If weather is an important factor for your trip to Colorado, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 17, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from London to Colorado. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,916 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
775 reviews
Delta
8.0
Very good
7,916 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,580 reviews
Delta
8.0
Very good
7,916 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 ($573), WestJet ($595), and Icelandair ($632).

  • 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: Air Canada (90%), Brussels Airlines (90%), United Airlines (90%).

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

    Looking at all options, your cheapest flight can be booked for $433. While the most popular route (London Heathrow - Denver Intl) can be booked for $467 on average our data indicates $1,601 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Colorado (average of $197). Flying from London Heathrow Airport to Colorado in March is currently the most expensive (average of $278). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
London City to John F Kennedy Intl flights
Gatwick to Newark flights
London City to Newark flights
Gatwick to LaGuardia flights
Heathrow to Los Angeles flights
Heathrow to Boston flights
Heathrow to Orlando flights
Heathrow to Miami flights
Heathrow to O'Hare Intl flights
Heathrow to San Francisco flights
Stansted to John F Kennedy Intl flights
Heathrow to Dallas/Fort Worth flights
Luton to John F Kennedy Intl flights
Heathrow to Seattle flights
Heathrow to Dulles Intl flights
Gatwick to Boston flights
Heathrow to Las Vegas flights
Heathrow to Baltimore flights
London City to Los Angeles flights
Heathrow to Hobby flights
Gatwick to Orlando flights
Heathrow to Atlanta flights
London City to Boston flights
Stansted to Newark flights
London City to Miami flights
Heathrow to Tampa flights
Heathrow to George Bush Intcntl flights
Heathrow to Denver flights
Gatwick to San Francisco flights
Gatwick to Miami flights
Heathrow to Charlotte flights
London City to San Francisco flights
Luton to Los Angeles flights
Heathrow to Ontario flights
Heathrow to Raleigh flights
Gatwick to Los Angeles flights
Heathrow to Nashville flights
Gatwick to O'Hare Intl flights
Heathrow to Detroit flights
Heathrow to Midway flights
London City to O'Hare Intl flights
Gatwick to Las Vegas flights
Stansted to Boston 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$490Average$702FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$599Average$892FlexibilityNo cancel feeOn-time70%
IberiaCheapest$624Average$907FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$627Average$887FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$647Average$781FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$671Average$788FlexibilityNo cancel feeOn-time78%
DeltaCheapest$699Average$747FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$725Average$906FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.