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Heathrow

$355+ Cheap flights from Colorado to Heathrow (LHR)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LHR
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Colorado to Heathrow

Cheapest flights from Colorado to Heathrow
Explore the most affordable flight options available from Colorado to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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 12/3111:20 amDEN - LHR
1 stop16h 30mLufthansa
Sat 1/104:20 pmLHR - DEN
1 stop15h 10mLufthansa
Deal found 12/17$660
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:21 amDEN - LHR
1 stop17h 14mBritish Airways
Sat 1/102:15 pmLHR - DEN
2 stops39h 09mBritish Airways
Deal found 12/16$684
This The Travel House 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2811:15 amDEN - LHR
2 stops50h 20mAir Canada
Sun 1/112:30 pmLHR - DEN
1 stop29h 07mAir Canada
Deal found 12/16$686
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 amDEN - LHR
2 stops19h 35mMultiple Airlines
Sat 1/1011:10 amLHR - DEN
2 stops17h 56mMultiple Airlines
Deal found 12/16$706
This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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.
Sun 12/285:35 pmDEN - LHR
Nonstop9h 05mLufthansa
Sat 1/177:40 amLHR - DEN
2 stops18h 46mLufthansa
Deal found 12/17$760
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:26 pmDEN - LHR
1 stop26h 29mUnited Airlines
Sun 1/114:20 pmLHR - DEN
1 stop26h 55mUnited Airlines
Deal found 12/16$765
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:00 amDRO - LHR
2 stops20h 15mUnited Airlines
Thu 1/17:30 amLHR - DRO
2 stops16h 50mUnited Airlines
Deal found 12/17$1,373
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:48 pmCOS - LHR
1 stop12h 52mLufthansa
Sun 1/47:30 amLHR - COS
2 stops21h 20mLufthansa
Deal found 12/16$1,558
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/211:48 pmCOS - LHR
1 stop12h 52mUnited Airlines
Sun 1/44:20 pmLHR - COS
2 stops26h 06mUnited Airlines
Deal found 12/16$1,734
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:30 pmDRO - LHR
1 stop13h 10mLufthansa
Thu 1/17:30 amLHR - DRO
2 stops20h 34mLufthansa
Deal found 12/16$1,735
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:26 pmDRO - LHR
1 stop14h 34mAmerican Airlines
Thu 1/19:50 amLHR - DRO
2 stops17h 57mAmerican Airlines
Deal found 12/15$1,787
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.
Fri 12/267:00 amDRO - LHR
1 stop19h 40mUnited Airlines
Fri 1/211:35 amLHR - DRO
1 stop12h 45mUnited Airlines
Deal found 12/15$1,904

Find flight deals from Colorado to Heathrow

Keep the following information in mind while searching for Colorado to Heathrow flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$570
(Kiwi.com)

One-way from

$355
(oojo)

Popular in

June

Cheapest in

October

Average price

$980

Good round-trip deal

$649 or less

Good one-way deal

$394 or less
Provider with most accurate pricing for Denver Intl-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-London (LON) flights.
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From Colorado to London Heathrow
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One-way flight from Colorado to London Heathrow
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($196 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Colorado to London Heathrow.
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Price to beat on a one-way flight from Colorado to London Heathrow.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Heathrow 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 18, 2025.
Use the filters below to find and compare flights from Colorado to London Heathrow Airport that are best for you.

Fly from

Colorado

Fly to

Heathrow

Route

Depart

Return

Price

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sat 1/31

1:38 pm-9:40 am

1 stop13h 02m

London Heathrow

Sat 2/7

10:25 am-8:18 pm

2 stops16h 53m

$589

GunnisonLondon

GUC - LHR

GUCLHR

Gunnison

Fri 1/23

12:03 pm-10:15 am

1 stop15h 12m

London Heathrow

Tue 1/27

6:35 am-8:24 pm

2 stops20h 49m

$628

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 2/12

10:24 am-6:50 am

1 stop13h 26m

London Heathrow

Fri 2/20

7:30 am-10:08 pm

2 stops21h 38m

$628

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 2/12

7:45 am-9:40 am

1 stop18h 55m

London Heathrow

Fri 2/20

6:35 am-10:02 pm

2 stops22h 27m

$628

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Sat 1/31

1:25 pm-9:40 am

1 stop13h 15m

London Heathrow

Sat 2/7

7:40 am-5:23 pm

2 stops16h 43m

$628

DurangoLondon

DRO - LHR

DROLHR

Durango La Plata County

Sat 1/31

11:40 am-9:40 am

1 stop15h 00m

London Heathrow

Sat 2/7

6:35 am-8:31 pm

2 stops20h 56m

$628

DurangoLondon

DRO - LHR

DROLHR

Durango La Plata County

Fri 2/20

1:41 pm-9:40 am

1 stop12h 59m

London Heathrow

Tue 2/24

11:10 am-9:38 am

2 stops29h 28m

$629

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Tue 1/13

1:25 pm-1:00 pm

2 stops16h 35m

London Heathrow

Tue 1/20

11:35 am-6:18 pm

1 stop13h 43m

$631

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sat 1/31

11:29 am-11:05 am

2 stops16h 36m

London Heathrow

Sat 2/7

6:35 am-8:18 pm

2 stops20h 43m

$633

MontroseLondon

MTJ - LHR

MTJLHR

Montrose County

Wed 1/28

7:00 am-10:10 am

2 stops20h 10m

London Heathrow

Sun 2/1

2:30 pm-2:32 pm

2 stops31h 02m

$634

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 52 results
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Best time to book a flight from Colorado to Heathrow

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to London Heathrow Airport (average of $481). Flying from Colorado to London Heathrow Airport in June is currently the most expensive (average of $814). 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 CO to LHR?

Find hourly flight availability from Colorado to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s typically best to fly out from Colorado to London Heathrow Airport at noon. Doing so could potentially save you 19% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Colorado to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Colorado to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Colorado to London Heathrow Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Colorado to London Heathrow Airport

Explore weekly flight availability from Colorado to Heathrow. 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 18, 2025.

The most flights from USCO to LHR 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).

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

Related info for your journey

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

    For as low as $589, Lufthansa can have you in London Heathrow Airport from Colorado in 13h 02m. The distance from Colorado to London Heathrow Airport is about 4826 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $180. However, be on the lookout for offers from WestJet and Aer Lingus, as they are both options that can get you from Colorado to London Heathrow Airport for a low price.

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

    While some choose either Colorado Springs - London Heathrow or Montrose County - London Heathrow, Denver Intl - London Heathrow is the most popular route from Colorado to London Heathrow Airport.

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

    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 Colorado to London Heathrow Airport on time: Air Canada (81%), Austrian Airlines (81%), Brussels Airlines (81%).

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

    Looking at all options, your cheapest flight can be booked for $322. While the most popular route (Denver Intl - London Heathrow) can be booked for $443 on average, our data indicates $1,404 when flying from Colorado to London Heathrow Airport.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to London Heathrow Airport (average of $481). Flying from Colorado to London Heathrow Airport in June is currently the most expensive (average of $814). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

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Alternative routes for Colorado to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Colorado to Heathrow

Discover the top 10 airlines that operate flights from Colorado to Heathrow. 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$801FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$469Average$639FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$545Average$810FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$551Average$795FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$569Average$743FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$571Average$939FlexibilityNo cancel feeOn-time69%
IberiaCheapest$573Average$713FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$580Average$712FlexibilityNo cancel feeOn-time72%
DeltaCheapest$584Average$897FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$620Average$685FlexibilityNo cancel feeOn-time76%

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