What is the cheapest airline that flies from Colorado to London?

JetBlue, Icelandair, and Finnair are the most popular carriers operating from Colorado to London

How long does it take to fly to London?

Flight times from Colorado to London vary, but if you’re flying out of Denver and flying into London Heathrow Airport (one of the most popular routes), then the duration is 8h 55m on average. Another popular route from Colorado to London is flying from Colorado Springs to London Heathrow Airport, which will take roughly 11h 02m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from Colorado to London on average per day?

As of December 2025, there are 11 flights per day flying from Colorado to London. The most common time of day flights depart is 17:00, with 100% of flights taking off in the afternoon.

Which airlines fly to London?

United Airlines, Lufthansa and Iberia are the top three most popular airlines that fly to London from Colorado according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to London. Keep in mind that there are 5 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

How many flights depart from Colorado to London on average per week?

As of December 2025, 77 flights take off from Colorado and land in London each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

When did momondo last update prices for flights from Colorado to London?

Prices for flights from Colorado to London were last updated today.

How many operators does momondo search for flights from Colorado to London?

As of December 2025, there are 5 operators available to choose from for flights from Colorado to London.

How old do you have to be to fly from Colorado to London?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£261 Cheap Flights from Colorado to London in 2025/26

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One-way

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Cheap return flights

Enter your travel dates to find the best prices.

13:25 - 09:40

COS

LHR

13h 15m1 stop

20:15 - 17:23

LHR

COS

28h 08m2 stops

£426Lufthansa

Fri, 30 Jan - Fri, 6 Feb

13:38 - 09:40

GJT

LHR

13h 02m1 stop

10:25 - 20:18

LHR

GJT

16h 53m2 stops

£440Lufthansa

Sat, 31 Jan - Sat, 7 Feb

05:50 - 07:10

COS

LHR

18h 20m2 stops

07:40 - 17:23

LHR

COS

16h 43m2 stops

£466Multiple Airlines

Sat, 31 Jan - Sat, 7 Feb

07:00 - 09:40

DRO

LHR

19h 40m1 stop

11:10 - 09:38

LHR

DRO

29h 28m2 stops

£470United Airlines

Fri, 20 Feb - Tue, 24 Feb

13:41 - 09:40

DRO

LHR

12h 59m1 stop

11:10 - 10:58

LHR

DRO

30h 48m2 stops

£470United Airlines

Fri, 20 Feb - Tue, 24 Feb

08:28 - 10:00

DEN

LGW

18h 32m2 stops

14:00 - 08:30

LGW

DEN

25h 30m1 stop

£473Multiple Airlines

Thu, 15 Jan - Thu, 22 Jan

13:25 - 17:50

DEN

LGW

22h 25m2 stops

18:35 - 21:25

LGW

DEN

33h 50m2 stops

£474SWISS

Tue, 24 Mar - Mon, 30 Mar

11:15 - 07:10

DEN

LHR

13h 55m1 stop

11:05 - 19:55

LHR

DEN

38h 50m2 stops

£474Air Canada

Sun, 15 Mar - Mon, 23 Mar

05:30 - 07:10

GJT

LHR

18h 40m2 stops

15:00 - 12:47

LHR

GJT

28h 47m2 stops

£476Air Canada

Fri, 13 Feb - Tue, 17 Feb

11:20 - 13:00

DEN

LHR

18h 40m2 stops

20:05 - 20:13

LHR

DEN

31h 08m2 stops

£477SWISS

Sun, 18 Jan - Thu, 29 Jan

Lufthansa flights from Colorado to London

Our best Lufthansa deals on Colorado to London flight tickets

Lufthansa

30 Jan

COS13:25Colorado Springs

13h 15m

1 stop

LHR09:40London Heathrow

6 Feb

LHR20:15London Heathrow

28h 08m

2 stops

COS17:23Colorado Springs

£426

Find similar

Lufthansa

31 Jan

GJT13:38Grand Junction Regnl

13h 02m

1 stop

LHR09:40London Heathrow

7 Feb

LHR10:25London Heathrow

16h 53m

2 stops

GJT20:18Grand Junction Regnl

£440

Find similar

Lufthansa

13 Jan

COS13:25Colorado Springs

13h 15m

1 stop

LHR09:40London Heathrow

20 Jan

LHR11:35London Heathrow

13h 43m

1 stop

COS18:18Colorado Springs

£449

Find similar

United Airlines flights from Colorado to London

Our best United Airlines deals on Colorado to London flight tickets

United Airlines

20 Feb

DRO13:41Durango La Plata County

12h 59m

1 stop

LHR09:40London Heathrow

24 Feb

LHR11:10London Heathrow

34h 38m

2 stops

DRO14:48Durango La Plata County

£470

Find similar

United Airlines

20 Feb

DRO13:41Durango La Plata County

12h 59m

1 stop

LHR09:40London Heathrow

24 Feb

LHR11:10London Heathrow

30h 48m

2 stops

DRO10:58Durango La Plata County

£470

Find similar

United Airlines

31 Jan

DRO07:00Durango La Plata County

17h 10m

2 stops

LHR07:10London Heathrow

7 Feb

LHR06:35London Heathrow

20h 56m

2 stops

DRO20:31Durango La Plata County

£473

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Fri 30/1

13:25-09:40

1 stop13h 15m

London Heathrow

Fri 6/2

20:15-17:23

2 stops28h 08m

£426

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sat 31/1

13:38-09:40

1 stop13h 02m

London Heathrow

Sat 7/2

10:25-20:18

2 stops16h 53m

£440

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Sat 31/1

05:50-07:10

2 stops18h 20m

London Heathrow

Sat 7/2

07:40-17:23

2 stops16h 43m

£466

DurangoLondon

DRO - LHR

DROLHR

Durango La Plata County

Fri 20/2

07:00-09:40

1 stop19h 40m

London Heathrow

Tue 24/2

11:10-09:38

2 stops29h 28m

£470

DurangoLondon

DRO - LHR

DROLHR

Durango La Plata County

Fri 20/2

13:41-09:40

1 stop12h 59m

London Heathrow

Tue 24/2

11:10-10:58

2 stops30h 48m

£470

DenverLondon

DEN - LGW

DENLGW

Denver Intl

Thu 15/1

08:28-10:00

2 stops18h 32m

London Gatwick

Thu 22/1

14:00-08:30

1 stop25h 30m

£473

DenverLondon

DEN - LGW

DENLGW

Denver Intl

Tue 24/3

13:25-17:50

2 stops22h 25m

London Gatwick

Mon 30/3

18:35-21:25

2 stops33h 50m

£474

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Sun 15/3

11:15-07:10

1 stop13h 55m

London Heathrow

Mon 23/3

11:05-19:55

2 stops38h 50m

£474

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Fri 13/2

05:30-07:10

2 stops18h 40m

London Heathrow

Tue 17/2

15:00-12:47

2 stops28h 47m

£476

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Sun 18/1

11:20-13:00

2 stops18h 40m

London Heathrow

Thu 29/1

20:05-20:13

2 stops31h 08m

£477

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Colorado is in October. Flight prices, which tend to average around £486, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Colorado averaging around £498.

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to London for around £749.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £526. Flights in the afternoon are often more expensive, with an average ticket price of £612.

What is the cheapest Colorado to London flight route?

Fly from Denver Intl to London Heathrow for the best Colorado - London flight prices

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £587 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Colorado for as low as £534 on momondo.

What cabin class options are available on Colorado to London flights?

There are 3 cabin classes available to choose from on Colorado to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to London flights?

You could potentially save up to 5% on your flight if you consider stops on a Colorado to London flight.

Cheap Colorado to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to London

Best price found	£307
Fastest flight time	8h 55m
Direct flights	Every day
Airports in London	6 airports

The best one-way flight to London from Colorado in the past 72 hours is £307. The best return flight deal from Colorado to London found on momondo in the last 72 hours is £527.

The fastest flight from Colorado to London takes 8h 55m

Direct flights go from Colorado to London every day.

There are 6 airports in London. From Colorado there are direct flights to London Heathrow (LHR).

Search flight deals

When did momondo last update prices for flights from Colorado to London?
Prices for flights from Colorado to London were last updated today.
How many operators does momondo search for flights from Colorado to London?
As of December 2025, there are 5 operators available to choose from for flights from Colorado to London.
How old do you have to be to fly from Colorado to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Colorado to London?
Based on momondo bookings for flights between Colorado and London, the leading plane model is Boeing 787 Dreamliner, making up 33.86% of the total bookings. Other popular models include Boeing 777 with 23.87%, Airbus A350-1000 with 23.04%, and Boeing 787-9 Dreamliner with 17.17%.

Best airlines flying from Colorado to London

Compare and see reviews for airlines that fly from Colorado to London with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £428	Free Cancellation	Rating 6.8 7,635 reviews	Search Lufthansa flights
Iberia	PriceFrom £456	Free Cancellation	Rating 7.0 3,053 reviews	Search Iberia flights
British Airways	PriceFrom £477	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights
United Airlines	PriceFrom £480	Free Cancellation	Rating 7.4 9,093 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £576	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Colchester

Bedford

Ramsgate

Hounslow

Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Colorado.

Can I find flights from Colorado to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Colorado with this policy.

How can momondo help me find flights from Colorado to London?

momondo provides multiple filters to help you find the best flight to London from Colorado. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Colorado to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Colorado and alert you when they change.

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Flights to Manchesterfrom £33

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Flights to Glasgowfrom £29

Flights to Bristolfrom £31

Flights to Newcastle upon Tynefrom £30

Flights to Aberdeenfrom £43

Flights to Liverpoolfrom £31

Flights to Leedsfrom £55

Flights to Invernessfrom £32

Flights to Newquayfrom £34

Cheap flights from Colorado to London from £264

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to London departing on 24/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

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Filter for what you want

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Find the cheapest flights from Colorado to London

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Lufthansa flights from Colorado to London

Our best Lufthansa deals on Colorado to London flight tickets

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Our best United Airlines deals on Colorado to London flight tickets

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How to get the cheapest flight ticket from Colorado to London

What is the cheapest month to fly to London?

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to London for around £749.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £526. Flights in the afternoon are often more expensive, with an average ticket price of £612.

What is the cheapest Colorado to London flight route?

Fly from Denver Intl to London Heathrow for the best Colorado - London flight prices

How far in advance should I book a flight to London?

What cabin class options are available on Colorado to London flights?

There are 3 cabin classes available to choose from on Colorado to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to London flights?

You could potentially save up to 5% on your flight if you consider stops on a Colorado to London flight.

What is the cheapest airline that flies from Colorado to London?

JetBlue, Icelandair, and Finnair are the most popular carriers operating from Colorado to London

Which airlines fly to London?

How many flights depart from Colorado to London on average per day?

As of December 2025, there are 11 flights per day flying from Colorado to London. The most common time of day flights depart is 17:00, with 100% of flights taking off in the afternoon.

How many flights depart from Colorado to London on average per week?

As of December 2025, 77 flights take off from Colorado and land in London each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

How long does it take to fly to London?

Cheap Colorado to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to London

Best price found

Fastest flight time

Direct flights

Airports in London

When did momondo last update prices for flights from Colorado to London?

How many operators does momondo search for flights from Colorado to London?

How old do you have to be to fly from Colorado to London?

What documentation or ID do you need to fly to London?

What is the most popular plane model from Colorado to London?

Best airlines flying from Colorado to London

Compare and see reviews for airlines that fly from Colorado to London with momondo

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to London?

Can I find flights from Colorado to London with flexible booking policies on momondo?

How can momondo help me find flights from Colorado to London?

I’m not ready to book a flight from Colorado to London right now. Can momondo alert me if prices change?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London