Find cheap flights from the United States to London

Find cheap flights from the United States to London

Round-trip
Economy
Washington (WAS)
London
Tue. 9/3
Tue. 16/3
Any month
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Good to know

Low season

FebruaryBest time to beat the crowds (8% less expensive on average)

High season

SeptemberMost popular time to fly (21% more expensive on average)

Average price round-trip

C$ 513(avg. price over the last 2 weeks)

Good deal round-trip

C$ 226or less

Good deal one-way

C$ 75or less

Top tips for finding cheap flights to London

  • Looking for cheap airfare to London? 25% of our users found tickets to London for the following prices or less: From Tampa C$ 248 one-way - C$ 248 round-trip, from Los Angeles C$ 188 one-way - C$ 356 round-trip, from Phoenix C$ 547 round-trip
  • High season is considered to be August, September and October. The cheapest month to fly to London is January.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

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Top 3 airlines serving United States to London

Scores according to KAYAK customer reviews

7.7
WestJet
Overall score based on 8,984 reviews
8.1
Boarding
7.7
Comfort
8.5
Crew
7.1
Entertainment
7.1
Food
Airline reviews

Pros: "Very kind. Gave my daughter an extra snack because we had not had a solid meal in a while."
Cons: "Boarding process is never good. Obviously need to board the plane from the back to the front in reverse numerical order."

Pros: "Crew went out of their way to be extra helpful and accommodating, helped us reorganize seats to put our family together"

Pros: "Boarding time. Flights on time"
Cons: "Amazing"

Pros: "Newest 787 plane in the fleet. Really comfortable seats and terrific in-flight entertainment"

Pros: "An hour and 40 minute delay which would've made me miss my connection.bfortunately for me the next flight was delayed so with that and running through the airport to get from one gate to the other I made it... But stressful experience overall."

Cons: "Super slow boarding and entertainment system didn't work"

Pros: "Direct from Orlando to London!"
Cons: "Coming home to the cold"

Cons: "Small plane"

Pros: "The pilots made the trip in great time. The landing was good."
Cons: "We were told we could board the flight, then when we got to the steps in the cold and dark we were sent back.The staff were not very friendly with the customers somewhat superficial, but with each other it was like they were at a party. Not impressed by the 2 young women."

Pros: "Crew was wonderful"
Cons: "Entertainment options"

Cons: "Booked our seats 24 hours in advance and could not get seats together. Airline expects us to pay extra for reasonable expectations as that"

Pros: "We were late getting to YUL because of traffic, and a West Jet employee went above and beyond to make sure we made it on our flight even though we missed the cut-off time."

Pros: "Friendly service. On time"
Cons: "Not a direct flight"

Pros: "good value for money. Staff were helpful"
Cons: "A direct route from St John's to London."

Pros: "I’ve always liked WestJet and it’s services. They are my always my first airline I go to check flights."

Pros: "very nice."

Pros: "Good service but pretzel is not great good. Very Nice stewardesses."
Cons: "The seated are too small, a bus is more confortable."

Pros: "Flight only took about 2&1/2 hours! Crew was humorous and very sweet. Got in early thank goodness or May have missed connection. Our baggage was checked through to the final destination which was great. No problems with reservations or baggage."
Cons: "Boarding seemed painfully slow. Download the WestJet app in advance if you like to watch movies or TV shows on your mobile device! I had a very tight connection to next flight and had to make it through immigration and to a far-away gate in leas than one hour. To make it worse we had to wait about 10 minutes for a customs agent to arrive so they could begin unloading the luggage and let us go through customs."

Pros: "On bird staff"
Cons: "Pay for WiFi"

Pros: "Flight crew very friendly."
Cons: "Entertainment app. is terrible, movies really old."

Pros: "It is always an adventure flying into Lethbridge....maybe I should leave it at that. The crew both inside the terminal and on the flight were great, the service is great. It’s a very loud ride....if you have noise triggered headaches....I’m sorry. You’re in a flying cigar tube....up close with every other passenger and the open cockpit is a new experience....but totally fascinating too. The pilot and co-pilot are young but very compitant. The weather has a huge impact on your flight because if there is any wind you will get tossed around and the landing in Lethbridge is more of a roller coaster ride. Let me sum it up like this....if your not good with REALLY loud noise, or claustrophobic, or have any motion sickness issues.....rent a car and drive!!!"
Cons: "Don’t need to get there the 90 mins ahead as AC states is the policy, especially if you are on the 5 am flight because they aren’t. I made that mistake arriving at 3:30 am for my 5am flight and no one showed up til after 4am. It was really annoying to not know that ahead of time."

Pros: "West Jet just runs a relaxed yet professional airline. They are just more laid back and accommodating. You can use any bathroom on the plane as well which is huge on those rare times you need to use it. They are funny and chatty and seem to enjoy working together which all translates to a less rushed and relaxed experience for us the passenger. I really can’t complain....I had an entire row to myself....the best you can hope for, when riding on a plain for hours that’s like winning the lottery!"
Cons: "No complaints for sure"

Cons: "I will say our flight took of a bit late which was a bother so late at night."

Pros: "Too much fog so plane could not land. Had to rebook out of Toronto for the late afternoon. Crew was very accommodating with my reschedule."
Cons: "Nothing to like. Never got on the plane. Not Westjet’s fault. They can’t control tye weather."

Pros: "Great seatmate. Friendly crew. That is a plus."
Cons: "Wish the seats weren't so tight and close to each other."

Cons: "The snacks were awful."

Pros: "Flight was delayed hours. Met the most amazing man on the flight ahead of me to Calgary. He waited at the airport for my flight to land. Sometimes delays are just meant to be. Lots of commuting travel in our future..."

Pros: "Seats are fairly comfortable. Everything mostly went smoothly."
Cons: "Cannot use the in-flight entertainment system due to not having the WestJet app. Not able to download the app in flight. WestJet should at least provide a $0.99 internet option for 5 minutes, or allow free internet access to the App store for a few minutes to download the WestJet app."

Pros: "It was great experience once again. I always travel with WestJet as it is always on time."
Cons: "That every time I travel I always get the farthest seat if not on #28 it's 24...wish next time I can get in the middle at least. Other than that all is good."

Pros: "Speed of Service"
Cons: "Wish flight attendants were demonstrated more interpersonal skills."

Pros: "always like west jet"
Cons: "a half hour delay leaving. got home at 2 am. machine ate husband's nexus card. passport not returned to him. only noticed when we got home."

Pros: "Good service easy boarding luggage came out as soon as we were off the plane when you are on vacation last thing you need is to wait for your bags great job all around"

Pros: "Good amount of leg room"
Cons: "Bathroom didn't work in the back of the airplane"

Pros: "We were traveling with an infant and a toddler and the staff was helpful and gave us info about which bathroom had a changing table and how to hold the infant during take off and landing without us needing to ask for it."
Cons: "We had a bit of delay because the plane came in late but luckily enough the winds were favorable and the pilot was able to catch up."

Pros: "Nothing good to say about this air line. Las 4 flight have been late..,,,,,,,,,"

Pros: "Short flight. Home on time."

Pros: "Again, staff was friendly and approachable attitude."
Cons: "Toronto airport needs proper signage. I got lost and wasted my half an hour to just find a transist to downtown."

Pros: "Excellent customer service. On time flight."
Cons: "Bathroom was filthy but that's a reflection on the patrons not West jet."

Pros: "Friendliest crew, good entertainment system. Comfortable seating"
Cons: "Desperately need a lounge facility in terminal 5 Chicago"

Pros: "Crew was great."
Cons: "Crazy delays into La Guardia from Toronto, worst flight experience of my life!!!"

Pros: "Direct flight from my hometown of Palm Springs Ca to Vancouver Canada"
Cons: "Left late and I arrived 35 min late had to go through customs and didn't make it from international to domestic. Rebooked a flight 3 hours later for $75."

Pros: "The friendliest crew ever!"

Cons: "Hard seats no padding extrely uncomfortable"

Pros: "West Jet is just so much more professional than other airlines that you could select ! The attention to detail goes above & beyond to make each person feel welcome !"
Cons: "From check-in to the flight crew, West Jet is the best !"

Pros: "Everything was good Quick easy boarding Friendly air crew Love Westjet!!"

Pros: "As always crew is very attentive. They make the safety presentation fun and engaging."

Pros: "Flight was delayed and then cancelled due to bad weather. Crew don't handle well the discomfort of the passengers that has to wait about 8 hours for the next flight."
Cons: "Delta should give some kind of support in this kind of situation."

Pros: "I thought the flight was a smooth and comfortable one, the pilots are amazing at what they do. In my opinion they have one of the most under-appreciated jobs on the planet. They got everyone home safe and sound, and at the end of the day that's the most important thing."
Cons: "When people travel, as a professional airline you would think that luggage and food is something that would be provided for its passengers. People very rarely travel empty handed. You would think that after spending so much money on a ticket, one small meal and 1 piece of baggage would be included. It really turned me off when I realized that I had to pay extra for this. Ask yourself one question, would you travel empty handed? Would you feel comfortable paying $10 for a meal that should cost $5? I get that it's a money grab, but c'mon your company already makes millions (possibly billions) atleast provide people the option to bring one piece of luggage and a meal. I will NOT be using westjet to fly to Trinidad anymore. The flight was good, but many other airlines provide a smooth and confortable ride as well. That being said, things like that can cause people to stop using your airline and go somewhere else. Just something to think about... Caribbean airlines provide the samething your company provides, except they give you food and allow you to bring luggage woth no hassle."

Pros: "The staff was amazing !"
Cons: "Nothing earthing was maxing"

Pros: "New plane!!"
Cons: "No WiFi"

Cons: "Delay"

Pros: "We arrived early in Toronto . Excellent Service"

Pros: "Service was efficient and pleasant. Complementary drinks and snacks were served. This was a nice surprise!"

Pros: "Overall a great experience."

Pros: "Quick professional services"

Pros: "I like the tv screens at the back of the head rests"
Cons: "The seating was a little cramped"

Pros: "Good price"
Cons: "Horrible customer care"

Pros: "Delays"
Cons: "Delays"

Cons: "There was absolutely nothing that I found to complain about"

Cons: "Long delays"

Cons: "Delayed for more than two hours on both the trips to and from Canada. This is a common thing with Air Canada i heard. Flights always get delayed."

Pros: "Once we were up in the air everything was well and good."
Cons: "Massive weather delays at the gate and lack of communication from gate agents."

Pros: "The fact that I called in the a.m. and they rebooked immediately, no charge."

Pros: "No problems."

Cons: "Was not on time, old air craft."

Pros: "Air Canada sucks! Rip off artists. Service is poor and price gauging is rampant"

Pros: "Take off and landing were both smooth and ahead of time. Landed Toronto from New York about 30 minutes early!"
Cons: "Charging for earphones!!!"

Pros: "Flights were on time"
Cons: "Forcing us to check carry on bags, and not very courteous about it."

Pros: "Does not alert passengers they need an ETA before checking in. Waste of time"

Pros: "On time and quick and simple"

Pros: "It was on time and they served drinks."

Cons: "N/c"

Cons: "Not getting home when I needed to."

Cons: "Service"

Cons: "Everything was good"

Pros: "Efficiency, comfort"

Pros: "Quick easy and painless boarding and de boarding. It's been a while since I flew Air Canada and I was pleasantly surprised by the upgrades, including the tinted windows!"

Pros: "Prompt, efficient and friendly."

Cons: "I would have liked a coffee"

Cons: "Delayed"

Pros: "Everthing was smooth and on time"
Cons: "Nothing specific"

Pros: "Flight was delayed several hours with no compensation given"

Cons: "Cancelled flights and delays."

Pros: "Nothing"
Cons: "AC Ticket attendants were unbelievably rude."

Cons: "It was canceled"

Pros: "Left on time, arrived on time."

Pros: "Overall good. A bad delay and boarding process. I can't fill out the above rating cause my computer dos'nt let me."

Pros: "Nothing"
Cons: "Cancelled flights, delays, no refund option so I had to wait 15hrs to get to a 1 hrs destination. Then they lost my luggage so my mini weekend away turned into a disaster. I basically wasted $1,000 for a nightmare trip. If they would've just issued a refund in the beginning I would've been fine w the cancelation."

Pros: "on time"

Cons: "Good"

Pros: "Everyone was nice and the seating area had room."

Cons: "It got cancelled and the service was horrific"

Cons: "My daughter got destroyed by a cup of coffee a passenger behind her was holding when turbulence struck quiet bad,neither he or the airline apologizes for either."

Pros: "We arrived ontime."

Cons: "LONG DELETED !!!!!!!!!!!!!!"

Cons: "Long time till take off."

Pros: "it was on time landed a few minutes early stewerdess were very nice"

Cons: "They charged us 25 dollars for a carry on bag which was unfair. They didn't charge anyone else. When I came back I was not charged. I would like a refund. The people were very rude! I take that bag on trips weekly. I should have not been charged."

Cons: "I called and confirmed a special meal 40 hours in advance. They said they had no request form me and gave me fruit,"

Pros: "As expected."
Cons: "N/A"

Pros: "Nothing"

Cons: "The landing was rough!"

Pros: "Snack delicious"

Pros: "No Lufthansa?!"
Cons: "No Lufthansa?!"

Pros: "I felt comfortable. Staff was great."
Cons: "The cracker and cheese box. The snack wasn't worth the money."

Pros: "Easy to board and check in, good price"
Cons: "It was extra to check luggage"

Pros: "Everything"
Cons: "N/a"

Pros: "Everything"
Cons: "NA"

Pros: "Boarding and de-boarding seemed quicker than other flights on other airlines"
Cons: "Noisy/ squeaky seat"

Pros: "Thank you for making this connection available from charlottesville to dulles. It beat driving! Everyone was helpful"

Cons: "The lack of breakfast options. Lack of room."

Pros: "This plane was smaller so I got to sit by myself so it was more comfortable for me"
Cons: "Lack of drinks/ comp snacks"

Pros: "I had to get my luggage in Frankfurt and was almost denied access to it in the airport because the airlines don't have agreement together."
Cons: "Luggage transfer"

Pros: "Everything was fine"
Cons: "Na"

Pros: "Boarded on time. Arrived on time. Fast boarding"
Cons: "A little turbulent"

Pros: "Fine. Wish my earlier one wasn't so delayed."

Pros: "On time"
Cons: "The boarding process Boarding should start from the rear rows to the front irrespective of what group shows on your ticket.some ended up with no storage space as they are in group 4 or 5"

Pros: "It's seems like no one cares about passengers in this airline.... Rude services"

Cons: "we had to pay to watch any channel."

Pros: "The upgrade it made the all the difference in the world"
Cons: "Would not change a thing"

Cons: "EVERYTHING WAS EXCELLENT"

Pros: "Good"

Pros: "Good trip"
Cons: "Nothing"

Pros: "Liked the upgrade to first class"

Cons: "Was asked to pay $25 extra for my luggage. That should have been disclosed up front on the ticket. Not happy"

Pros: "On time Fast Snoith"
Cons: "Seat was hell Boarding !!!!! The terminal was hot old confusing Even if local think about the wonderful new bus terminals that are being built Tech could go s long way Use apos to highlight boarding ligistics Location and direction sids Etc etc etc Dulles gets an F here"

Cons: "N/a"

Cons: "When I boarded the plane, I noticed crumbs and grease marks on my seat and crackers all over the floor at my feet. Rather than clean my area, the stewardess handed me wet wipes."

Cons: "Bad"

Cons: "Long wait. Not communication between employees. Poor customer. Service"

Pros: "Everyone was very accommodating! Thank You."

Pros: "Everything"

Cons: "not offered any break on food or beverage, or wifi."

Pros: "For all everything was OK"

Cons: "No TV"

Cons: "They gave my vegetarian meal away to someone else. The plane had mechanical issues and we were moved to a new gate and plane, but that plane was late on the fueling list and they only addressed this after boarding us, so we waited forever after boarding. The internet didn't work even through the united app."

Pros: "Everything"
Cons: "N/A"

Pros: "Good level of standard service. Finding the personnel are getting better in their individual service. Understand their job is difficult but a positive attitude can make everyone's situation better. Keep working toward better. Seeing the improvement is encouraging. Really like the improved cleanliness of the aircraft. Great job getting the aircraft boarded -- we were ready ahead of time and pushed back early!!!!!"
Cons: "Nothing worth mentioning. That is a plus."

Pros: "On time."
Cons: "See first leg response above"

Pros: "Cookies were very tasty."
Cons: "Seat would not recline."

Cons: "Late departure."

Pros: "Very poor service"

Cons: "Service"

Pros: "I loved how quickly we departed and arrived at each destination!"
Cons: "The boarding process was terrible. People forgetting to even stand in line for their boarding groups getting to cut ahead of those whose group is currently in the process of boarding. That should not be allowed. It's rude and disrespectful to other passengers/customers."

Cons: "Maintenance delays and rerouting caused me to miss my reserved ground transit in LA... United claimed on the phone I would be reimbursed for a taxi, but changed their mind when I sent them a receipt a few days later."

Pros: "same comments as above"
Cons: "same comments as above"

Cons: "Tight aisle"

Pros: "Professional, friendly service."
Cons: "Nothing"

Pros: "Fast, friendly, on time"
Cons: "none"

Read more about WestJet
COVID-19 information

Safety measures for airlines flying from the United States to London

Airlines flying from the United States to London have enacted additional safety measures and adjusted policies to better accommodate travellers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from the United States to London

Mandatory masks

Masks required on board, masks provided on flights from the United States to London

Social distancing seating

Middle seats unavailable to book on flights from the United States to London

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from the United States to London

Book cheap flights from United States to London

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