HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$316+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LHR
4月 24 — 5月 11
金 4/24
金 5/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Heathrow 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 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 3月 25, 2026.

This Gotogate deal was found by Cheapflights users on 3/22. 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.
火 4/214:40 pm
DEN
-
LHR
1 stop20h 40m
Icelandair
火 4/289:25 pm
LHR
-
DEN
1 stop28h 35m
Icelandair
Deal found 3/22$674
This Gotogate deal was found by Cheapflights users on 3/24. 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.
水 11/113:40 pm
DEN
-
LHR
1 stop12h 10m
Icelandair
日 11/228:35 pm
LHR
-
DEN
1 stop28h 30m
Icelandair
Deal found 3/24$676
This Gotogate deal was found by Cheapflights users on 3/22. 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.
日 11/13:40 pm
DEN
-
LHR
1 stop12h 10m
Icelandair
水 11/118:35 pm
LHR
-
DEN
1 stop28h 30m
Icelandair
Deal found 3/22$678
This oojo deal was found by Cheapflights users on 3/24. 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.
日 11/13:40 pm
DEN
-
LHR
1 stop12h 10m
Icelandair
月 11/98:35 pm
LHR
-
DEN
1 stop28h 30m
Icelandair
Deal found 3/24$689
This Gotogate deal was found by Cheapflights users on 3/21. 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.
火 4/214:40 pm
DEN
-
LHR
1 stop20h 40m
Icelandair
水 5/209:25 pm
LHR
-
DEN
1 stop22h 15m
Icelandair
Deal found 3/21$690
This Gotogate deal was found by Cheapflights users on 3/23. 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.
水 8/128:10 pm
DEN
-
LHR
1 stop32h 45m
Icelandair
土 8/299:25 pm
LHR
-
DEN
1 stop28h 35m
Icelandair
Deal found 3/23$693
This Gotogate deal was found by Cheapflights users on 3/21. 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.
月 5/44:40 pm
DEN
-
LHR
1 stop12h 15m
Icelandair
月 5/119:25 pm
LHR
-
DEN
1 stop28h 35m
Icelandair
Deal found 3/21$695
This Gotogate deal was found by Cheapflights users on 3/22. 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.
火 8/184:40 pm
DEN
-
LHR
1 stop12h 15m
Icelandair
水 8/269:25 pm
LHR
-
DEN
1 stop22h 15m
Icelandair
Deal found 3/22$697
This Gotogate deal was found by Cheapflights users on 3/21. 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.
月 8/108:10 pm
DEN
-
LHR
1 stop17h 10m
Icelandair
水 8/199:25 pm
LHR
-
DEN
1 stop22h 15m
Icelandair
Deal found 3/21$700
This Cheapflightsfares deal was found by Cheapflights users on 3/21. 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.
日 8/21:30 pm
COS
-
LHR
2 stops19h 10m
Lufthansa
水 8/267:25 am
LHR
-
COS
2 stops21h 28m
Lufthansa
Deal found 3/21$789
This Cheapflightsfares deal was found by Cheapflights users on 3/21. 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.
水 9/92:17 pm
ASE
-
LHR
2 stops18h 23m
Lufthansa
水 9/236:55 am
LHR
-
ASE
2 stops17h 23m
Lufthansa
Deal found 3/21$789
This United Airlines deal was found by Cheapflights users on 3/23. 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.
月 12/71:35 pm
MTJ
-
LHR
2 stops34h 35m
United Airlines
木 12/106:35 am
LHR
-
MTJ
2 stops20h 34m
United Airlines
Deal found 3/23$791

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 3月 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$674
(Gotogate)

One-way from

$316
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$711

Good round-trip deal

$705 or less

Good one-way deal

$405 or less
Provider with most accurate pricing for Denver Intl-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-London (LON) flights.
Search Deals
From Colorado to London Heathrow
Search Deals
One-way flight from Colorado to London Heathrow
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Colorado to London Heathrow.
Search Deals
Price to beat on a one-way flight from Colorado to London Heathrow.
Search Deals

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 3月 25, 2026.
Use the filters below to find and compare flights from Colorado to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverLondon

DEN - LHR

DENLHR

Denver Intl

金 5/1

5:35 pm-9:40 am

Nonstop9h 05m

London Heathrow

金 5/8

7:25 am-2:20 pm

1 stop13h 55m

$825

DenverLondon

DEN - LHR

DENLHR

Denver Intl

水 4/29

5:35 pm-9:40 am

Nonstop9h 05m

London Heathrow

日 5/3

7:25 am-2:20 pm

1 stop13h 55m

$825

AspenLondon

ASE - LHR

ASELHR

Aspen Pitkin County

月 8/17

6:12 pm-12:20 pm

1 stop11h 08m

London Heathrow

水 8/26

6:55 am-6:43 pm

2 stops18h 48m

$827

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

水 9/2

8:00 am-10:20 am

2 stops19h 20m

London Heathrow

水 9/16

6:30 am-9:15 pm

2 stops21h 45m

$831

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

水 8/12

7:45 am-6:45 am

2 stops16h 00m

London Heathrow

水 8/26

6:55 am-4:26 pm

2 stops16h 31m

$832

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

火 8/18

11:31 am-9:40 am

1 stop15h 09m

London Heathrow

火 9/1

2:05 pm-10:59 am

2 stops27h 54m

$836

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

日 9/20

7:00 am-9:40 am

1 stop19h 40m

London Heathrow

水 9/23

7:30 am-4:26 pm

2 stops15h 56m

$838

AspenLondon

ASE - LHR

ASELHR

Aspen Pitkin County

月 8/17

7:30 am-6:20 am

1 stop15h 50m

London Heathrow

水 8/26

10:05 am-8:16 pm

1 stop17h 11m

$843

AspenLondon

ASE - LHR

ASELHR

Aspen Pitkin County

水 7/29

2:21 pm-2:25 pm

1 stop17h 04m

London Heathrow

木 8/27

12:55 pm-1:50 pm

1 stop31h 55m

$843

AspenLondon

ASE - LHR

ASELHR

Aspen Pitkin County

水 9/9

7:30 am-10:55 am

1 stop20h 25m

London Heathrow

水 9/23

12:55 pm-8:16 pm

1 stop14h 21m

$843

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 52 resultsSorted by cheapest first
1
2
3
...
6

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 $474). Flying from Colorado to London Heathrow Airport in June is currently the most expensive (average of $811). 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 3月 25, 2026.

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

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 $825, United Airlines can have you in London Heathrow Airport from Colorado in 9h 05m. The distance from Colorado to London Heathrow Airport is about 4655 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 Aer Lingus and British Airways, 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 Grand Junction Regnl - London Heathrow or Colorado Springs - 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 (90%), Austrian Airlines (90%), Brussels Airlines (90%).

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

    Looking at all options, your cheapest flight can be booked for $278. While the most popular route (Denver Intl - London Heathrow) can be booked for $688 on average, our data indicates $1,625 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 $474). Flying from Colorado to London Heathrow Airport in June is currently the most expensive (average of $811). 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
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton

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.

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 3月 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$153FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$462Average$579FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$520Average$781FlexibilityNo cancel feeOn-time70%
DeltaCheapest$528Average$797FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$551Average$814FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$559Average$712FlexibilityNo cancel feeOn-time72%
IberiaCheapest$563Average$719FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$568Average$738FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$569Average$923FlexibilityNo cancel feeOn-time69%
FinnairCheapest$623Average$770FlexibilityNo cancel feeOn-time76%

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.