C$ 314 Find Cheap Flights from London to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to the United States departing on 5/7. 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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Flight Deals

Best United States Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Fort Lauderdale
Fort Lauderdale1 stopC$ 665
Orlando
Orlando1 stopC$ 665
New York
New York1 stopC$ 610
Las Vegas
Las Vegas1 stopC$ 745
Los Angeles
Los Angeles1 stopC$ 753
Miami
Miami1 stopC$ 735
San Francisco
San Francisco1 stopC$ 491
Tampa
Tampa1 stopC$ 669
Honolulu
Honolulu2 stopsC$ 885
Seattle
Seattle1 stopC$ 622
Boston
Boston1 stopC$ 763
Atlanta
Atlanta1 stopC$ 856
Fort Myers
Fort Myers2 stopsC$ 751
San Diego
San Diego2 stopsC$ 630
Fort Lauderdale
Fort Lauderdale1 stopC$ 665
Orlando
Orlando1 stopC$ 665
New York
New York1 stopC$ 610
Las Vegas
Las Vegas1 stopC$ 745
Los Angeles
Los Angeles1 stopC$ 753
Miami
Miami1 stopC$ 735
San Francisco
San Francisco1 stopC$ 491
Tampa
Tampa1 stopC$ 669
Honolulu
Honolulu2 stopsC$ 885
Seattle
Seattle1 stopC$ 622
Boston
Boston1 stopC$ 763
Atlanta
Atlanta1 stopC$ 856
Fort Myers
Fort Myers2 stopsC$ 751
San Diego
San Diego2 stopsC$ 630

Cheap Flights from London to the United States

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to the United States 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 London to the United States

Mon, 12 Oct - Wed, 21 Oct
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 491WestJet
Thu, 8 Oct - Tue, 13 Oct
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 532WestJet
Thu, 8 Oct - Tue, 13 Oct
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 535WestJet
Mon, 9 Nov - Thu, 12 Nov
Air Canada Logo
9:45 a.m. - 1:38 p.m.
YXU
-
LGA
3h 53m
1 stop
Air Canada Logo
8:45 a.m. - 3:06 p.m.
LGA
-
YXU
6h 21m
1 stop
C$ 610Air Canada
Mon, 9 Nov - Thu, 12 Nov
Air Canada Logo
5:45 a.m. - 2:42 p.m.
YXU
-
LGA
8h 57m
2 stops
Air Canada Logo
10:30 a.m. - 3:06 p.m.
LGA
-
YXU
4h 36m
1 stop
C$ 614Air Canada
Thu, 8 Oct - Tue, 13 Oct
Air Canada Logo
5:40 a.m. - 10:39 a.m.
YXU
-
SFO
7h 59m
1 stop
Air Canada Logo
11:10 a.m. - 9:20 a.m.
SFO
-
YXU
19h 10m
2 stops
C$ 614Air Canada
Thu, 8 Oct - Tue, 13 Oct
United Airlines Logo
3:30 p.m. - 1:16 a.m.
YXU
-
SFO
12h 46m
2 stops
United Airlines Logo
11:00 p.m. - 9:20 a.m.
SFO
-
YXU
7h 20m
1 stop
C$ 713United Airlines
Thu, 8 Oct - Tue, 13 Oct
United Airlines Logo
3:30 p.m. - 1:16 a.m.
YXU
-
SFO
12h 46m
2 stops
United Airlines Logo
11:30 p.m. - 2:55 p.m.
SFO
-
YXU
12h 25m
2 stops
C$ 727United Airlines
Thu, 25 Jun - Wed, 1 Jul
Multiple Airlines Logo
5:55 p.m. - 10:42 p.m.
YXU
-
SEA
31h 47m
3 stops
Multiple Airlines Logo
7:20 p.m. - 9:20 a.m.
SEA
-
YXU
11h 00m
2 stops
C$ 955Multiple Airlines
Thu, 25 Jun - Wed, 1 Jul
Multiple Airlines Logo
5:55 p.m. - 10:42 p.m.
YXU
-
SEA
31h 47m
3 stops
Multiple Airlines Logo
10:45 a.m. - 5:20 a.m.
SEA
-
YXU
15h 35m
3 stops
C$ 1,106Multiple Airlines
Booking Insights

KAYAK's insights & trends for London to the United States flights

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

What is the cheapest month to fly from London to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to the United States, 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 London to the United States is August, when tickets cost C$ 220 (return) on average. On the other hand, the most expensive months are April and March, when the average cost of round-trip tickets is C$ 462 and C$ 435 respectively.

Good to know

Low seasonMay
Cheapest flightC$ 314
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from London to Fort Lauderdale

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from London to the United States?

    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 London to the United States.

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

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

  • What is the Hacker Fare option on flights from London to the United States?

    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 London to the United States 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 London to the United States?

    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 London to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines flying from London to the United States

 
Need help choosing which airline to fly with from London to the United States? 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 9751 reviews
7.1Entertainment
8.1Crew
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

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

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

Good but airlines getting smaller. I didn't like the meal but the service was fine. Flight was fine and luggage arrived. So good.

They were fast and I like how they used to entertainment system to play video about the safety.

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

Given I (and I’m assuming most people) have both carry in and a personal item included in their fare, I find it very unfair that on neither of my flights I was able to use the overhead for my small backpack because they were completely rammed with luggage, people personal items, jackets, hats and other items. So the only item I brought in had to be stuffed under my seat while they had their leg room and sat comfortable with all of their items in the overhead. This has to stop because I was uncomfortable on both flights when I only had one smaller item that could not be checked due to its contents (medication etc). Plenty of people could have checked theirs but chose not to and then took up the space allotment for 2 people.

Flight attendants had a little attitude. Food tastes no good.

From pre boarding to flight attendant, crew and baggage handler, excellent. Didn’t lost my luggage like West jet.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

The flight didn’t happen because they apparently lost my check in and wouldn’t let me board.

Access to movies was rather confusing. Apart from that, I have no complaints.

As someone who never flies WestJet unless there is no other viable option I have to give this crew credit where credit is due. Extremely well done everyone.

Flight left on time. The crew was very friendly. I had to buy a proper meal. Small cookie and a drink just doesn’t cut it for a 4.5 hours flight.

Experience was good, the wifi hook up is somewhat tough

I will not be flying with westjet again. I was uncomfortable in my seat. The position made my back hurt so bad. My wife was able to fit the seatbelt around her with out an extension but was unable to put the tray table down or fit in the seat for that matter. Our bag was smashed and I spent two hours trying to fill out the application for a damaged bag before I gave up. The 80 photos I took would not work and nothing telling me the format to upload them as.. I made the mistake of unpacking the bag before taking photos so no claim for me. Next trip to Canada I will have to use air Canada.

My luggage was damaged 1 wheel was out I can't find it nowhere

Took 3 hours to check in and drop off our suitcases. Half of the passengers were still in line by boarding time. The computer systems and staff were very slow. Staff were also disorganized and kept allowing later flights to skip lines. Suitcases were piling on that several other passengers didn't get their suitcases. Then, we were sitting in the plane for 2 hours and were told that the flight was overbooked. We missed our connecting flight and had to fly the following day but with a stop over. Good thing ONE WestJet customer rep was pleasant and actually knew how to do her job when we wanted to rebook to a direct flight. Thank you to Kim at Toronto airport. Terrible experience at PUJ. Won't go back to Dominican Republic.

Great seats, super comfortable, but no in flight entertainment which was a let down

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

Flight and attendance were very good we had 2 hour delay that took the shine of it

The seat design in the premium economy section leaves virtually no room under the seat to store a bag or purse. Other than that, it was a great flight. Arrived early.

The flight was delayed, but not for weather. We landed over 3hrs later than planned.

The stag were helpful, kind and liked the passengers. The plane was pristinely clean! Great flight!

My flight was delayed more than once, but Air Canada updated us regularly. Friends on other airlines had much worse experiences.

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

My seat was covered in vomit and I will be reaching out to Air Canada

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

3 hr delay at the gate while they were doing maintenance. Next time, do not board passengers while maintenance is being performed

Everything you need to know for your flight from London to the United States

Information on your arrival and departure airports