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Cheap flights from Colorado to London from $355

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 5/12. 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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0 bags

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Find the cheapest flights from Colorado to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
1:25 pm - 9:40 am
COS
-
LHR
13h 15m1 stop
Lufthansa Logo
8:15 pm - 5:23 pm
LHR
-
COS
28h 08m2 stops
$570Lufthansa
Fri, Jan 30 - Fri, Feb 6
Lufthansa Logo
1:38 pm - 9:40 am
GJT
-
LHR
13h 02m1 stop
Lufthansa Logo
10:25 am - 8:18 pm
LHR
-
GJT
16h 53m2 stops
$589Lufthansa
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
5:50 am - 7:10 am
COS
-
LHR
18h 20m2 stops
Multiple Airlines Logo
7:40 am - 5:23 pm
LHR
-
COS
16h 43m2 stops
$623Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
United Airlines Logo
12:03 pm - 10:15 am
GUC
-
LHR
15h 12m1 stop
United Airlines Logo
6:35 am - 8:24 pm
LHR
-
GUC
20h 49m2 stops
$628United Airlines
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
11:40 am - 9:40 am
DRO
-
LHR
15h 00m1 stop
United Airlines Logo
6:35 am - 8:31 pm
LHR
-
DRO
20h 56m2 stops
$628United Airlines
Sat, Jan 31 - Sat, Feb 7
Air Canada Logo
7:00 am - 10:10 am
MTJ
-
LHR
20h 10m2 stops
Air Canada Logo
2:30 pm - 2:32 pm
LHR
-
MTJ
31h 02m2 stops
$634Air Canada
Wed, Jan 28 - Sun, Feb 1
Air Canada Logo
11:15 am - 7:10 am
DEN
-
LHR
13h 55m1 stop
Air Canada Logo
11:05 am - 7:55 pm
LHR
-
DEN
38h 50m2 stops
$634Air Canada
Sun, Mar 15 - Mon, Mar 23
Icelandair Logo
4:40 pm - 11:55 am
DEN
-
LHR
12h 15m1 stop
Icelandair Logo
1:05 pm - 7:00 pm
LHR
-
DEN
12h 55m1 stop
$635Icelandair
Sat, Apr 4 - Mon, Apr 13
Icelandair Logo
3:40 pm - 10:50 am
DEN
-
LHR
12h 10m1 stop
Icelandair Logo
8:35 pm - 6:05 pm
LHR
-
DEN
28h 30m1 stop
$636Icelandair
Fri, Jan 16 - Sat, Jan 24
Multiple Airlines Logo
5:30 am - 6:30 am
GJT
-
LHR
18h 00m3 stops
Multiple Airlines Logo
1:25 pm - 10:27 pm
LHR
-
GJT
16h 02m2 stops
$671Multiple Airlines
Sat, Jan 31 - Sat, Feb 7

Lufthansa flights from Colorado to London Heathrow Airport

Our best Lufthansa deals on Colorado to London Heathrow Airport flight tickets
Lufthansa
Jan 30
COS1:25 pmColorado Springs
13h 15m
1 stop
LHR9:40 amLondon Heathrow
Feb 6
LHR8:15 pmLondon Heathrow
28h 08m
2 stops
COS5:23 pmColorado Springs
$570
Find similar
Lufthansa
Jan 31
GJT1:38 pmGrand Junction Regnl
13h 02m
1 stop
LHR9:40 amLondon Heathrow
Feb 7
LHR10:25 amLondon Heathrow
16h 53m
2 stops
GJT8:18 pmGrand Junction Regnl
$589
Find similar
Lufthansa
Jan 13
COS1:25 pmColorado Springs
13h 15m
1 stop
LHR9:40 amLondon Heathrow
Jan 20
LHR11:35 amLondon Heathrow
13h 43m
1 stop
COS6:18 pmColorado Springs
$601
Find similar

British Airways flights from Colorado to London Heathrow Airport

Our best British Airways deals on Colorado to London Heathrow Airport flight tickets
British Airways
Jan 21
COS10:21 amColorado Springs
16h 39m
1 stop
LHR10:00 amLondon Heathrow
Jan 25
LHR7:15 pmLondon Heathrow
32h 42m
2 stops
COS8:57 pmColorado Springs
$636
Find similar
British Airways
Feb 12
COS1:43 pmColorado Springs
14h 57m
1 stop
LHR11:40 amLondon Heathrow
Feb 20
LHR3:00 pmLondon Heathrow
14h 08m
1 stop
COS10:08 pmColorado Springs
$655
Find similar
British Airways
Mar 25
DEN6:25 pmDenver Intl
9h 10m
LHR9:35 amLondon Heathrow
Apr 2
LHR1:35 pmLondon Heathrow
9h 55m
DEN4:30 pmDenver Intl
$658
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to London Heathrow Airport 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, momondo users made 832,500 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

Fly to

Route

Depart

Return

Price

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Fri 1/30

1:25 pm-9:40 am

1 stop13h 15m

London Heathrow

Fri 2/6

8:15 pm-5:23 pm

2 stops28h 08m

$570

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

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Sat 1/31

5:50 am-7:10 am

2 stops18h 20m

London Heathrow

Sat 2/7

7:40 am-5:23 pm

2 stops16h 43m

$623

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

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

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

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Sun 3/15

11:15 am-7:10 am

1 stop13h 55m

London Heathrow

Mon 3/23

11:05 am-7:55 pm

2 stops38h 50m

$634

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Sat 4/4

4:40 pm-11:55 am

1 stop12h 15m

London Heathrow

Mon 4/13

1:05 pm-7:00 pm

1 stop12h 55m

$635

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Fri 1/16

3:40 pm-10:50 am

1 stop12h 10m

London Heathrow

Sat 1/24

8:35 pm-6:05 pm

1 stop28h 30m

$636

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sat 1/31

5:30 am-6:30 am

3 stops18h 00m

London Heathrow

Sat 2/7

1:25 pm-10:27 pm

2 stops16h 02m

$671

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Colorado to London Heathrow Airport

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

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Colorado, with most prices found around $657. If you’re not able to fly to London Heathrow Airport in February, then October is your next best option. Flight prices from Colorado to London Heathrow Airport during October average around $661.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $761. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $879.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Colorado to London Heathrow Airport in the morning for as low as $754. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $891.

What is the cheapest Colorado to London Heathrow flight route?

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

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

You are more likely to see cheaper flights to London Heathrow Airport from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $786 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Colorado for as low as $714 on momondo.

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

There are 4 cabin classes available to choose from on Colorado to London Heathrow 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 Heathrow Airport flights?

You could potentially save up to 36% on your flight if you consider stops on a Colorado to London Heathrow Airport flight.

Cheap Colorado to London Heathrow Airport flight deals and tips

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

Best Price Found

$394

Fastest flight time

8h 55m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Colorado in the past 72 hours is $394. The best round-trip flight deal from Colorado to London Heathrow Airport found on momondo in the last 72 hours is $649.
The fastest flight from Colorado to London Heathrow Airport takes 8h 55m
Direct flights go from Colorado to London Heathrow Airport every day.
Search flight deals

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

    Prices for flights from Colorado to London Heathrow Airport are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Colorado to London Heathrow Airport

Compare and see reviews for airlines that fly from Colorado to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $101Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
IcelandairPriceFrom $469Free CancellationRating
7.0
591 reviews
Search Icelandair flights
British AirwaysPriceFrom $545Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
American AirlinesPriceFrom $551Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
Aer LingusPriceFrom $569Free CancellationRating
7.2
1,395 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $571Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
IberiaPriceFrom $573Free CancellationRating
7.0
3,050 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $580Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $584Free CancellationRating
7.9
8,005 reviews
Search Delta flights
FinnairPriceFrom $620Free CancellationRating
7.6
1,338 reviews
Search Finnair flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Stratford-upon-Avon
Crawley
Brentwood
Salisbury
Wembley
Watford
Ilford
Cobham
Folkestone
Romford
Richmond

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Colorado to London for you.

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 helps you find the best flight between Colorado and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 Heathrow Airport trip

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