$121 Find Cheap Flights from Colorado to England - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Colorado to England departing on 12/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Low seasonJanuary
Cheapest flight$121
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Denver to London Heathrow Airport

Flights from Colorado to England: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Colorado to England 
DarleneFlew with British Airways
DEN
-
LHR
Mar 2026
Plan on a crazy, crowded experience in terminal 3! Find a resturarant to camp in to remove yourself from the pandamonium
Verified travelerFlew with British Airways
DEN
-
LHR
Dec 2025
Jst take one cashing bag no checked luggage-so much easier
TressaFlew with Lufthansa
DEN
-
LHR
Dec 2024
Make your layover longer because you will need it for all the walking at Heathrow
Verified travelerFlew with Iberia
DEN
-
LHR
Sep 2024
Coming from Denver with London as a layover you will have to go through security again

FAQs for booking flights from Colorado to England

  • How does KAYAK find such low prices on flights from Colorado to England?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to England.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to England?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado to England is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Colorado to England?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Colorado to England with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to England?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Colorado to England up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to England?

    SWISS connects Colorado to England with 18 flights per week. Austrian Airlines also offers 18 flights per week, while Air Canada follows with 14 flights per week.

  • How many airports are there in England?

    There are 22 airports in England. The busiest airport is London Heathrow Airport (LHR), with 53% of all flights arriving there.

  • Which is the cheapest airport to fly into in England?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in England is London Heathrow Airport (LHR), with an average flight price of $706.

  • What is the cheapest day to fly to England?

    Based on KAYAK data, the cheapest day to fly to England is Wednesday where round-trip tickets can be as cheap as $795. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $880 on average.

  • What is the cheapest time of day to fly to England?

    The cheapest time of day to fly to England is generally in the evening, when round-trip flights cost $837 on average. The most expensive time of day to fly to England is generally at night, which is peak travel time and where the average cost of a ticket is $887.

  • What is the cheapest flight to England?

    The cheapest ticket to England from Colorado found in the last 5 days was to London Heathrow Airport, at $789 round-trip. The most popular route is Denver (DEN) to London Heathrow Airport (LHR) and the cheapest round-trip airline ticket found on this route in the last 5 days was $789.

  • What is the cheapest month to fly from Colorado to England?

    The cheapest month for flights from Colorado to England is October, when tickets cost $155 (return) on average. On the other hand, the most expensive months are April and February, when the average cost of round-trip tickets is $382 and $372 respectively.

  • How far in advance should I book a flight from Colorado to England?

    To get a below average price on the flight from Colorado to England, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

  • How many cities have direct flights to England?

    From Colorado, there are direct flights to England from 1 city. This city is Denver and there are 127 direct flights each week.

  • How many direct flights to England are there each day?

    There are around 19 direct flights from within Colorado to England every day. Most flights (61%) depart in the evening.

  • How many direct flights to England are there each week?

    Each week there are around 127 direct flights from within Colorado to England. The most common day for departures is Monday, with 15% of flights taking off on this day.

  • How long is the flight to England?

    An average nonstop flight from Colorado to England takes 15h 15m, covering a distance of 4628 miles. The shortest route is Denver (DEN) to London Heathrow Airport (LHR) with an average flight time of 8h 55m.

  • How many long-haul flights are there to England each week?

    There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to England. Instead, there are 127 long-haul flights (6-12 hour flight duration), with the most arriving from Denver.

  • What are the most popular destinations in England?

    Based on KAYAK flight searches, the most popular destination is London (88% of total searches to England). The next most popular destinations are Edinburgh (9%) and Manchester (2%). Searches for flights to Birmingham (1%), to Newcastle upon Tyne (0%) and to Southampton (0%) are also popular.

Reviews of the top 5 airlines serving from Colorado to England

 
Need help choosing which airline to fly with from Colorado to England? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9893 reviews
6.6Food
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
Airline reviews

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

10.0 ExcellentEirene, May 2026
EWR - LHR
Read more United Airlines reviews

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

Lufthansa placed a 300 lb passenger in the aisle seat and I was stuck in the middle leaning sideways with no arm rest or ability to sit up straight and fully use my seat (due to encroachment-the seats are very narrow) the entire flight.

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

The United aircrew team salvaged what had been a dire experience sorting bag transfer/possible weight penalty and delay I getting off

Luggage did not make it onto my plane. Business seats were economy with empty row seat. Just horrible experience. Why would the company allow for transfers that don’t give employees enough time to transfer luggages??

For an long range economy flight I feel more space and more meal options need to be offered for flights over 5 hours

The check in agents in PHL and gate agents had to have been the rudest women that I have ever encountered; the agent weighing the bags at check in screamed continuously at all of the guests as did the woman at the gate.I have Executive Platinum status with AA and fly a lot with AA but these ladies were the absolute worst I had the displeasure to encounter!

B-class on an old plane with antiquated amenities and poor service. Landed in Rome w/o bag that didn’t make the connection (plenty of time in London). Bag will come to hotel NOT the day it lands but the following night!! Still waiting for bag…BA had nothing to offer in support and couldn’t even tell me their comp, told to submit receipts and then I’ll learn what is or isn’t covered.

It's a long flight and that is always difficult. I was comfortable and well. The movies available were great and the crew was good.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Flight was delayed an no one cares, or try to help passengers to get the conexión.

Our flight was cancelled while we are on our way to the airport. So, no notice. We were rescheduled to another airline with a 2 hour later takeoff and so arrived at our destination on time. We pre-paid American Airlines $190 to upgrade our seats. No refund. So no use for AA or Kayak.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Flights were delayed and due to a checked hand luggage bag by an overzealous gate agent in Berlin I missed my ground connection costing me another £80. Food was cold and bland, I honestly expect better from a national carrier operating out of one of their major hubs.

A bit more space? Not practical, I know. I felt squished in but part of that could have been the man sitting next to me.

It was my first experience in business class. It was everything I expected and more. Service was impeccable, food was delicious and I felt rested once I arrived to London

Missed our flight to London and we were put on coach seats to Munich.

The process overall was pretty seamless, and the crew were very friendly (especially Michael). Considering we booked expecting Lufthansa and the flight was operated by United, it was still a very good service and journey overall. The in-flight entertainment was great, with lots of quality options. One slight negative was that I had selected a vegetarian meal prior to flying, but received a vegan one. I think there should be more dietary options as it meant I missed out on some food that I would have preferred (and it seemed like the standard meals and snacks had a vegetarian option anyway). There was also a group of people who were moving around a lot and being generally disruptive at the quietest part of the flight, when the lights were off and most people were sleeping. I would have appreciated staff stepping in to encourage them to be mindful of others). Towards the end of the flight (which was very early in the morning in both time zones), the lights suddenly came on and breakfast was served. In my opinion, this was too early, and everyone was rudely awoken from sleep. After breakfast was cleared away, the lights went off again for about 45 minutes, allowing people to sleep some more. Then the lights came on again for landing. It seems like if they had served breakfast later, the lights on-lights off-lights on shenanigans could have been avoided, and people could have slept longer (and staff could have rested longer too).

Overall good experience, just the delay of 2.5 hrs was a bummer.

I was disgusted at the fact when it came to checking into the flight it appeared there was no space for me on the plane due to the fact United airlines/Lufthansa had overbooked the flight. This was ridiculous considering I had paid to be on the flight and got to the airport gate early to make sure I was on time. Luckily my partner had asked the gentleman on the desk if someone didn’t turn up could I have their seat as we did not want to have to wait til the next day to fly home. This then encouraged them to go and actually check the plane, where they found there was a seat available. Thank god my partner had suggested this otherwise we would have had to fly back the following day and have to stop over in Washington. As we got onto the plane and finally found our seats (which were not together either), other passengers believed it was because we were late for the flight which then made it even more of an uncomfortable flight. This whole experience made me so anxious and was very upsetting which then effected the flight home to London. It was unacceptable! It should not have happened in the first place and I will not be flying with United airlines again, and will be encouraging others not to as well.

I should've been inform it wasn't Lufthansa but United Airlines.

They canceled the flight we booked several weeks ago and Lufthansa rebooked us on a very bad connection through Frankfort but never told us…the helpful United people at the airport figured out what had happened and then rebooked us on a direct United flight, like our original booking, only overnight instead of daytime. Why did Lufthansa not mention that they had rebooked us, and why did they add a stopover needlessly?

Everything went very smoothly. Only issue, my movie screen was difficult to use. Unresponsive to touch commands. The crew was EXCELLENT 👍 Very helpful and accommodating. Upon arrival in London, the process was seemless. Highly recommend!

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

Food was average. Better headphones seats were average at best.

Late in leaving the US. Late in arriving in UK. 2 plua hous on ground in UK before leaving. Late in arriving in Spain. Didn't get our bags until the next night.

Comfortable, pleasant staff, quiet, good entertainment, food, drinks. Better than American (flight back) when we were crammed in and staff sometimes indifferent.

The perfect jet stream back saved over 1 hour in the air.

The people were great. Just a long delay due to tech issues with the plane. We missed our train so had to take a much more expensive one. Hopefully BA will reimburse us for the difference

Everything you need to know for your flight to England

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.