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Cheap flights from Colorado to London Heathrow Airport from £167

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LHR
14 Feb — 21 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Colorado to Heathrow

Keep the following information in mind while searching for Colorado to Heathrow flight deals. Data was last updated 15 January 2026.

Round-trip from

£440

One-way from

£167

Popular in

June

Cheapest in

October

Average price

£498

Good round-trip deal

£492 or less

Good one-way deal

£193 or less
British Airways
  • British Airways
  • 10/2-28/2
  • 3 total stops
  • 40h 27m total
  • Colorado to London
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British Airways
  • British Airways
  • 15/4
  • 1 total stop
  • 17h 57m total
  • Colorado to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£107 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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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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Find flight deals from Colorado to Heathrow

Enter your travel dates to find the best prices.

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 15 January 2026.

Wed 21/115:17
COS
-
LHR
1 stop11h 43m
British Airways
Wed 28/118:45
LHR
-
COS
2 stops29h 56m
British Airways
Deal found 14/1£437
Thu 19/207:38
COS
-
LHR
1 stop17h 37m
British Airways
Wed 4/307:35
LHR
-
COS
2 stops20h 03m
British Airways
Deal found 14/1£441
Tue 10/306:00
COS
-
LHR
1 stop22h 00m
British Airways
Wed 25/319:40
LHR
-
COS
2 stops34h 19m
British Airways
Deal found 14/1£444
Tue 28/417:09
COS
-
LHR
1 stop14h 16m
British Airways
Tue 5/506:10
LHR
-
COS
2 stops23h 15m
British Airways
Deal found 14/1£447
Wed 21/107:59
COS
-
LHR
2 stops19h 16m
Delta
Wed 28/106:20
LHR
-
COS
2 stops23h 03m
Delta
Deal found 14/1£452
Sun 1/310:35
GJT
-
LHR
1 stop15h 00m
Iberia
Sun 8/306:15
LHR
-
GJT
2 stops20h 23m
Iberia
Deal found 14/1£452
Tue 10/311:49
COS
-
LHR
1 stop14h 26m
Iberia
Wed 25/310:15
LHR
-
COS
1 stop16h 22m
Iberia
Deal found 14/1£454
Fri 27/207:38
COS
-
LHR
1 stop21h 37m
British Airways
Mon 9/313:25
LHR
-
COS
2 stops37h 12m
British Airways
Deal found 14/1£458
Thu 19/316:48
COS
-
LHR
1 stop13h 27m
British Airways
Tue 31/316:25
LHR
-
COS
1 stop24h 25m
British Airways
Deal found 14/1£461
Tue 3/208:05
DEN
-
LHR
1 stop20h 45m
Air Canada
Sun 8/206:50
LHR
-
DEN
2 stops20h 05m
Air Canada
Deal found 14/1£462
Sun 1/307:45
DEN
-
LHR
1 stop15h 10m
United Airlines
Sat 14/306:35
LHR
-
DEN
1 stop19h 20m
United Airlines
Deal found 14/1£462
Sun 1/307:38
COS
-
LHR
2 stops21h 02m
British Airways
Sun 8/310:00
LHR
-
COS
2 stops40h 37m
British Airways
Deal found 15/1£463

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 15 January 2026.
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

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 19/2

13:39-12:15

1 stop15h 36m

London Heathrow

Wed 4/3

06:15-20:38

2 stops21h 23m

£450

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sun 1/3

10:35-08:35

1 stop15h 00m

London Heathrow

Sun 8/3

06:15-19:38

2 stops20h 23m

£452

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Fri 27/2

07:38-12:15

1 stop21h 37m

London Heathrow

Mon 9/3

13:25-20:37

2 stops37h 12m

£458

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 19/3

16:48-12:15

1 stop13h 27m

London Heathrow

Tue 31/3

16:25-09:50

1 stop24h 25m

£461

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Sun 1/3

07:38-11:40

2 stops21h 02m

London Heathrow

Sun 8/3

10:00-20:37

2 stops40h 37m

£463

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Tue 28/4

06:20-08:50

2 stops19h 30m

London Heathrow

Tue 5/5

06:15-20:19

2 stops21h 04m

£465

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Mon 16/2

17:35-09:40

Nonstop9h 05m

London Heathrow

Sun 22/2

13:50-18:55

1 stop36h 05m

£466

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Wed 18/2

17:35-09:40

Nonstop9h 05m

London Heathrow

Sun 8/3

16:40-19:55

1 stop33h 15m

£466

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sun 1/3

16:46-20:45

2 stops44h 59m

London Heathrow

Sun 8/3

08:25-20:59

2 stops43h 34m

£467

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Tue 10/2

10:21-12:15

1 stop18h 54m

London Heathrow

Sat 28/2

06:05-22:10

2 stops23h 05m

£471

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Showing 1-10 of 60 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 return 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 £353). Flying from Colorado to London Heathrow Airport in June is currently the most expensive (average of £607). 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 15 January 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to London Heathrow Airport as you normally would.

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 15 January 2026.

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

How much does it cost for a return flight 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?

    British Airways, Iberia, and Delta can get you from Colorado to London Heathrow Airport in just under 15h. Your travel time can differ by up to 4h 30m. There are 4826 mi between Colorado and London Heathrow Airport. Both multi-stop and direct flights can be found to your destination and back.

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

    The most popular flight routes from Colorado to London Heathrow Airport are Denver Intl - London Heathrow, Colorado Springs - London Heathrow and Durango La Plata County - London Heathrow.

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

    Consider Air Canada (80%), Austrian Airlines (80%) or Brussels Airlines (80%) when booking your flight. These represent the most reliable airlines when flying from Colorado to London Heathrow Airport.

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

    On average you can expect to pay £574 for a flight from Colorado to London Heathrow Airport. The cheapest flight overall is £184 while the most popular route, (Denver Intl - London Heathrow) is currently priced at £362.

  • 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 holiday 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 £353). Flying from Colorado to London Heathrow Airport in June is currently the most expensive (average of £607). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Luton
Northampton
Slough
Gatwick
Hounslow
Wembley
Ilford
Brentford
Hayes
Colchester
Watford
Crawley
Kingston upon Thames
Swindon
Bedford
Chelmsford
Eastbourne
Romford

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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 4 airlines flying from Colorado to Heathrow

Discover the top 4 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 858,174 searches. Data last updated 15 January 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£427Average£662FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£455Average£509FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£476Average£596FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£479Average£570FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Colorado to Heathrow?

Cheapflights makes it easy to find Colorado to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Colorado to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Colorado to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Colorado to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Colorado to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Colorado to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Colorado today and book when prices fit your budget.

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