DEN - LHR

$214 Find Cheap Flights from Denver to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Heathrow departing on 7/25. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to London.
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Everything you should know

Cheapest round-trip
$927
Typical prices: $846-$615
Air Canada
Mon 9/7Mon 9/14
DEN - LHR • 2 stops
Cheapest non-stop
$927
Typical prices: $844-$616
British Airways
Wed 9/2Wed 9/16
DEN - LHR • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
British Airways premium economy adds extra legroom for this long-haul route.
American Airlines Premium Economy adds upgraded seats and meals over economy.
Expert advice
Expert advice
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Top airlines
Cheapest • from $927 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with British Airways and United Airlines. Average duration is 9h 01m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $153 (round-trip)
Shortest trip • 11h 25m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 7% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
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We hope you love your trip to Heathrow!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Denver to Heathrow (DEN-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Heathrow

Mon, Sep 7 - Mon, Sep 14
Air Canada Logo
11:30 am - 10:00 am
DEN
-
LHR
15h 30m
2 stops
Air Canada Logo
8:30 am - 6:46 pm
LHR
-
DEN
17h 16m
2 stops
$927Air Canada
Sat, Sep 5 - Mon, Sep 14
United Airlines Logo
5:35 pm - 9:40 am
DEN
-
LHR
9h 05mnonstop
United Airlines Logo
11:25 am - 2:15 pm
LHR
-
DEN
9h 50mnonstop
$928United Airlines
Wed, Sep 2 - Thu, Sep 10
British Airways Logo
6:40 pm - 10:35 am
DEN
-
LHR
8h 55mnonstop
British Airways Logo
1:35 pm - 4:30 pm
LHR
-
DEN
9h 55mnonstop
$929British Airways
Sun, Jul 19 - Tue, Aug 11
Multiple Airlines Logo
4:15 pm - 5:05 pm
DEN
-
LHR
17h 50m
1 stop
Multiple Airlines Logo
8:05 pm - 9:10 pm
LHR
-
DEN
32h 05m
2 stops
$930Multiple Airlines
Fri, Sep 18 - Sat, Oct 17
United Airlines Logo
8:25 pm - 12:25 pm
DEN
-
LHR
9h 00mnonstop
United Airlines Logo
2:05 pm - 10:31 am
LHR
-
DEN
27h 26m
1 stop
$931United Airlines
Wed, Jul 15 - Fri, Nov 20
Delta Logo
4:08 pm - 1:05 pm
DEN
-
LHR
13h 57m
1 stop
Delta Logo
11:45 am - 10:59 pm
LHR
-
DEN
18h 14m
2 stops
$932Delta
Fri, Aug 28 - Mon, Sep 14
Multiple Airlines Logo
8:10 pm - 8:20 pm
DEN
-
LHR
17h 10m
1 stop
Multiple Airlines Logo
1:35 pm - 4:30 pm
LHR
-
DEN
9h 55mnonstop
$933Multiple Airlines
Wed, Aug 5 - Thu, Aug 13
Finnair Logo
6:40 pm - 10:35 am
DEN
-
LHR
8h 55mnonstop
Finnair Logo
2:45 pm - 11:59 pm
LHR
-
DEN
16h 14m
1 stop
$934Finnair
Fri, Aug 28 - Tue, Sep 15
Multiple Airlines Logo
8:10 pm - 8:20 pm
DEN
-
LHR
17h 10m
1 stop
Multiple Airlines Logo
1:35 pm - 4:30 pm
LHR
-
DEN
9h 55mnonstop
$935Multiple Airlines
Mon, Aug 24 - Fri, Aug 28
British Airways Logo
6:40 pm - 10:35 am
DEN
-
LHR
8h 55mnonstop
British Airways Logo
1:35 pm - 4:30 pm
LHR
-
DEN
9h 55mnonstop
$936British Airways
Booking Insights

KAYAK's insights & trends for Denver to Heathrow flights

Get data-powered insights and trends into flights from Denver to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Denver to London Heathrow Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to London Heathrow Airport departing in September.

What’s the cheapest day of the week to fly from Denver to London Heathrow Airport?

The average price of all round-trip flights from Denver to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Denver to London Heathrow Airport, look for departures on Wednesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from London Heathrow Airport, Wednesday is the cheapest day to fly and Tuesday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to London Heathrow Airport is October, where tickets cost $684 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,322 and $1,113 respectively.

Can I save money by flying with a layover from Denver to London Heathrow Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $1,220 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Expert advice

Expert advice for your flight from Denver to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Duncan Madden

Duncan Madden

Expert on British Airways and LHR

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Harriet Baskas

Harriet Baskas

Expert on American Airlines and DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Good to know

Low seasonJanuary
Cheapest flight$214
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Denver to London Heathrow Airport

When to book flights from Denver to Heathrow

Are your dates flexible? Find out the best times to travel from Denver to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Denver to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Denver to Heathrow 
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 Denver to London Heathrow Airport flights

  • Does LHR have a children's play area?

    Yes. LHR has a couple of children's play areas to keep your young ones entertained and occupied as you await your flight. You can find them in Terminal 2, 3, 4, and 5. It is free entry for every child.

  • What type of flights are offered from DEN to LHR?

    There are varied layover flights from DEN to LHR with up to 3 stops on the journey. These flights are usually operated by Air Canada, Finnair, United Airlines, American Airlines, British Airways, and Lufthansa. The common layover cities include Dallas, Toronto, Las Vegas, Philadelphia, Dublin, Chicago, and Newark.

  • Does LHR have a prayer room?

    Yes. The Heathrow St. Georges Chapel is located near Terminal 3 at the Inner Ring West. The Chapel includes multiple faiths, made up of Anglican, Catholic, Buddhist, Jewish, Muslim, Hindu, Sikh, and Free church.

  • Can you get food delivered to you at DEN?

    Yes. DEN has Eats Delivered which enables you to relish the restaurants the airport has to offer. This means there will be no contact or lines for you to grab a meal. All that is needed of you is to download their AtYourGate app either from the Google play store or Apple store. The food will be delivered to your location at the airport.

  • What is the cheapest flight from Denver to London Heathrow Airport?

    In the last 5 days, the lowest price for a flight from Denver to London Heathrow Airport was $214 for a one-way ticket and $927 for a round-trip.

  • Do I need a passport to fly between Denver and London Heathrow Airport?

    Yes, you’ll need a passport to travel to London Heathrow Airport from Denver.

  • Which airports will I be using when flying from Denver to London Heathrow Airport?

    Denver and London Heathrow Airport are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at London Heathrow.

  • Which airlines offer Wi-Fi service onboard planes from Denver to London Heathrow Airport?

    Lufthansa, United Airlines, and American Airlines offer inflight Wi-Fi service on the Denver to London Heathrow Airport flight route.

  • Which aircraft models fly most regularly from Denver to London Heathrow Airport?

    The Airbus A350-1000 is the aircraft model that flies most regularly on the Denver to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Denver to London Heathrow Airport?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Denver and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Denver to London Heathrow Airport?

    There are nonstop flights from Denver to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Denver to London, Delta or Finnair?

    The two airlines most popular with KAYAK users for flights from Denver to London are Delta and Finnair. With an average price for the route of $807 and an overall rating of 7.9, Delta is the most popular choice. Finnair is also a great choice for the route, with an average price of $770 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Denver to London Heathrow Airport?

    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 Denver to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Denver 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 Denver to London Heathrow Airport?

    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 to London Heathrow Airport with an airline and back to Denver with another airline. Booking your flights between Denver and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to London Heathrow Airport?

    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 to London Heathrow Airport from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $508 or less one-way and $920 or less round-trip.
  • When you are flying from Denver to London Heathrow Airport, you can fly out using Denver International Airport (DEN), which is closer to the city of Aurora. It serves as a hub of a couple of airlines including Southwest Airlines, Frontier Airlines, and United Airlines. You will alight at the London Heathrow Airport (LHR), which is based on the border of the London Borough of Hillington. It serves as the hub of British Airlines and Virgin Atlantic.
  • When in DEN, the airport offers pet relief areas for your furry companions who have their own personal restrooms to relieve themselves. They are located in every concourse and outside the Terminals. They have an artificial drainage system and disposal bags and containers are provided.
  • At LHR, you can find a suitable lounge at all Terminals. They provide free Wi-Fi, food and drinks that are complimentary, or keep up with the latest news. The lounges are within easy reach to all passengers regardless of the class of travel.
  • If you are planning to rent a car upon arrival, London Heathrow airport has a variety of car rental companies. These services are offered by The Enterprise Rent-A-Car company whose desk can be found in the main terminal building at the arrival hall. From here, passengers are ferried from Terminals 2, 3, and 5 by their free shuttle bus to where the cars are.
  • Planning to go to DEN airport using your car and need special assistance? The airport has parking for the disabled. The accessible parking spaces can be found close to the terminals at the west and east garages, as well as near the shelters at all long-term parking areas. It is of importance that you notify the airport prior to your arrival and let them be aware of any special treatment you may require.

Prefer to fly direct from Denver to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to London Heathrow.
Find which airlines fly direct from Denver Intl Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to London Heathrow

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

Direct returns

London Heathrow to Denver Intl

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Denver to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Denver to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Heathrow? 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 9827 reviews
8.1Crew
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
Airline reviews

This planes staff was top tier. Everything went great and had a great flight home.

10.0 ExcellentKati, Jun 2026
DEN - DFW
Read more United Airlines reviews

This planes staff was top tier. Everything went great and had a great flight home.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

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)

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

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

The business class layout of chairs was weired. You are sitting directly across stranger.,

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.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

Repurchased food and it was moldy and expensive. But I figured it was bad luck so I purchased a cup-o-noodles, halfway through them we hit turbulence and the flight attendant was passing with the garbage, it would have been two seconds to grab it, but he was snarky grabbed someone else’s plastic cups and went to buckle up… I used the puke bags to secure the soup before it became an accessory. When he finally came around he gave me a face like a petulant child as I handed him the soup neatly wrapped in the paper then plastic bag. I watched a movie in silence as the rental or headphones was ridiculous at 4€ for those .10€ cheap plastic toys. No English subtitles on an American movie… crazy. I disliked the whinny little tourist trap and now I hope that it sinks into the ocean or erupts in a catastrophic eruption for their beloved “I live on an active volcano” pride.

At least one soda free, felt like I was nickeled to death.

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

When you consider the price I ended up paying for everything. This was not a good deal! I had no idea that this airline had changed to a bargain basement no frills airline. So, it was disappointing to have to pay for every little thing. The only thing included was water and coffee. You have to pay for everything else! So I just felt nickel and dime.

The movie choices were poor. The worst problem is the treatment of passengers durinng pre-boarding. In one case the primes were checked in and sent down the boarding tunnek only to stand waiting there while the plane is cleaned. In the second case the bus was loaded, the doors closed and just stood there unmoving like sardeines in a tin for over TEN minutes. In both cases it was rough on us old guys who find standing for long periods trying.. In other words, Donnt just stack us up and forget us.

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

We sat in our seats on the tarmac for almost 3 hours due to storms. They would not give us water or a snack. We were to depart at 7.30 pm and it was about 10.30 when we took off. No dinner until much after that. Beef type noodle dish was terrible with about a teaspoon of beef in it. The breakfast sweet waffle with egg and sausage inside was horrible. An English muffin sandwich would have been much better. Food was the worst in all of our years of traveling the world.

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

They messed up my seat so I didn’t get the one I paid for

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Good food, overall very comfy. The flight was full so obviously not optimal, but it is what it is.

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Flight was good but temp in the cabin was cold.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Everything you need to know for your flight from Denver to Heathrow

Information on your arrival and departure airports