Find flights
Deals
When to book
FAQs

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LHR
8 Feb — 15 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 9 January 2026.

Round-trip from

£431

One-way from

£167

Popular in

June

Cheapest in

October

Average price

£496

Good round-trip deal

£654 or less

Good one-way deal

£342 or less
British Airways
  • British Airways
  • 23/4-26/4
  • 3 total stops
  • 53h 49m total
  • Colorado to London
Search Deals
British Airways
  • British Airways
  • 4/5
  • 1 total stop
  • 12h 01m total
  • Colorado to London
Search Deals
Highest demand for flights based on searches. 20% 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
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

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 9 January 2026.

Thu 23/416:58GJT - LHR
2 stops37h 37mBritish Airways
Sun 26/412:55LHR - GJT
1 stop16h 12mBritish Airways
Deal found 8/1£431
Wed 14/113:21COS - LHR
1 stop12h 39mDelta
Wed 21/106:20LHR - COS
2 stops23h 03mDelta
Deal found 7/1£448
Mon 26/113:20COS - LHR
1 stop15h 20mVirgin Atlantic
Mon 2/217:50LHR - COS
2 stops35h 33mVirgin Atlantic
Deal found 7/1£449
Wed 14/113:06COS - LHR
1 stop12h 09mAmerican Airlines
Wed 21/116:30LHR - COS
1 stop24h 21mAmerican Airlines
Deal found 7/1£453
Sun 22/213:39COS - LHR
1 stop15h 36mBritish Airways
Sun 1/319:15LHR - COS
2 stops33h 55mBritish Airways
Deal found 8/1£455
Sun 22/216:46GJT - LHR
1 stop34h 14mBritish Airways
Sun 1/306:05LHR - GJT
2 stops41h 11mBritish Airways
Deal found 8/1£457
Thu 19/310:20COS - LHR
1 stop19h 55mBritish Airways
Tue 31/307:50LHR - COS
2 stops19h 47mBritish Airways
Deal found 7/1£466
Sat 4/416:40DEN - LHR
1 stop12h 15mIcelandair
Sun 12/413:05LHR - DEN
1 stop12h 55mIcelandair
Deal found 6/1£468
Thu 15/117:25DEN - LHR
Nonstop9h 10mBritish Airways
Tue 20/112:25LHR - DEN
Nonstop10h 05mBritish Airways
Deal found 7/1£469
Thu 22/108:05DEN - LHR
1 stop20h 45mMultiple Airlines
Thu 12/209:00LHR - DEN
2 stops17h 55mMultiple Airlines
Deal found 7/1£469
Thu 19/207:55COS - LHR
2 stops16h 10mMultiple Airlines
Thu 26/206:20LHR - COS
2 stops23h 01mMultiple Airlines
Deal found 6/1£470
Fri 16/108:05DEN - LHR
1 stop20h 45mMultiple Airlines
Fri 23/106:35LHR - DEN
1 stop15h 00mMultiple Airlines
Deal found 7/1£470

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 9 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

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Thu 23/4

16:58-13:35

2 stops37h 37m

London Heathrow

Sun 26/4

12:55-22:07

1 stop16h 12m

£431

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Mon 26/1

13:20-11:40

1 stop15h 20m

London Heathrow

Mon 2/2

17:50-22:23

2 stops35h 33m

£449

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 19/3

13:39-12:15

1 stop16h 36m

London Heathrow

Tue 31/3

08:55-22:10

1 stop20h 15m

£469

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 19/2

07:55-07:05

2 stops16h 10m

London Heathrow

Thu 26/2

06:20-22:21

2 stops23h 01m

£470

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 12/2

13:22-10:50

2 stops14h 28m

London Heathrow

Mon 16/2

17:50-22:21

2 stops35h 31m

£472

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sun 22/2

06:00-10:00

1 stop21h 00m

London Heathrow

Sun 1/3

08:20-16:16

1 stop14h 56m

£472

DenverLondon

DEN - LHR

DENLHR

Denver Intl

Sat 21/2

09:51-20:35

2 stops27h 44m

London Heathrow

Sat 28/2

16:40-18:55

1 stop33h 15m

£472

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Mon 4/5

13:45-12:50

2 stops16h 05m

London Heathrow

Tue 5/5

14:50-23:59

1 stop16h 09m

£474

Colorado SpringsLondon

COS - LHR

COSLHR

Colorado Springs

Thu 19/3

06:20-08:45

2 stops20h 25m

London Heathrow

Tue 31/3

12:25-22:30

2 stops17h 05m

£475

Grand JunctionLondon

GJT - LHR

GJTLHR

Grand Junction Regnl

Sun 22/2

13:43-09:40

1 stop12h 57m

London Heathrow

Sun 1/3

18:00-20:30

2 stops33h 30m

£479

Flights are sorted by cheapest return flights first.

Deals found on 8/1

Showing 1-10 of 52 results
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 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 £605). 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 9 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 9 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).

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, Virgin Atlantic, and Iberia can get you from Colorado to London Heathrow Airport in just under 15h 20m. Your travel time can differ by up to 22h 17m. There are 4711 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 Grand Junction Regnl - 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 £694 for a flight from Colorado to London Heathrow Airport. The cheapest flight overall is £183 while the most popular route, (Denver Intl - London Heathrow) is currently priced at £356.

  • 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 £605). 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
Luton
Croydon
Northampton
Slough
Hounslow
Gatwick
Ilford
Wembley
Brentford
Hayes
Colchester
Watford
Crawley
Swindon
Kingston upon Thames
Bedford
Chelmsford
Eastbourne
Romford

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.

Alternative routes for Colorado to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
Boston to Heathrow flights
Dulles Intl to Heathrow flights
Los Angeles to Heathrow flights
LaGuardia to Heathrow flights
Newark to Gatwick flights
John F Kennedy Intl to London City flights
O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
John F Kennedy Intl to Gatwick flights
John F Kennedy Intl to Stansted flights
Baltimore to Heathrow flights
San Francisco to Heathrow flights
LaGuardia to Gatwick flights
Seattle to Heathrow flights
Atlanta to Heathrow flights
Boston to Gatwick flights
Newark to Stansted flights
Newark to London City flights
Miami to Heathrow flights
Orlando to Heathrow flights
Newark to Luton flights
Dulles Intl to Gatwick flights
Hobby to Heathrow flights
Reagan-National to Heathrow flights
Boston to London City flights
Philadelphia to Heathrow flights
Dulles Intl to London City flights
Denver to Heathrow flights
Los Angeles to Gatwick flights
O'Hare Intl to Gatwick flights
Baltimore to Gatwick flights
Dallas/Fort Worth to Gatwick flights
O'Hare Intl to London City flights
Austin to Heathrow flights
Tampa to Heathrow flights
Boston to Stansted flights
O'Hare Intl to Stansted flights
Charlotte to Heathrow flights
Reagan-National to Gatwick flights
Los Angeles to London City flights
Minneapolis to Heathrow flights
Raleigh to Heathrow flights
San Francisco to Gatwick flights
George Bush Intcntl to Heathrow flights
San Francisco to London City flights
Los Angeles to Stansted flights

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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£426Average£661FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£454Average£507FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£475Average£594FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£477Average£569FlexibilityNo 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.

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.