C$ 205 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 21/10. 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$ 664
Orlando
Orlando1 stopC$ 625
New York
Newark1 stopC$ 719
Las Vegas
Las Vegas2 stopsC$ 489
Los Angeles
Los Angeles2 stopsC$ 384
Miami
Miami1 stopC$ 624
San Francisco
San Francisco1 stopC$ 353
Tampa
Tampa1 stopC$ 552
Honolulu
Honolulu2 stopsC$ 722
Seattle
Seattle1 stopC$ 351
Boston
Boston1 stopC$ 762
Atlanta
Atlanta1 stopC$ 890
Fort Myers
Fort Myers2 stopsC$ 775
San Diego
San Diego1 stopC$ 434
Fort Lauderdale
Fort Lauderdale1 stopC$ 664
Orlando
Orlando1 stopC$ 625
New York
Newark1 stopC$ 719
Las Vegas
Las Vegas2 stopsC$ 489
Los Angeles
Los Angeles2 stopsC$ 384
Miami
Miami1 stopC$ 624
San Francisco
San Francisco1 stopC$ 353
Tampa
Tampa1 stopC$ 552
Honolulu
Honolulu2 stopsC$ 722
Seattle
Seattle1 stopC$ 351
Boston
Boston1 stopC$ 762
Atlanta
Atlanta1 stopC$ 890
Fort Myers
Fort Myers2 stopsC$ 775
San Diego
San Diego1 stopC$ 434

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

Thu, 9 Jul - Wed, 29 Jul
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$ 353WestJet
Thu, 9 Jul - Wed, 29 Jul
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$ 355WestJet
Thu, 9 Jul - Wed, 29 Jul
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$ 377WestJet
Thu, 9 Jul - Wed, 29 Jul
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$ 381WestJet
Mon, 19 Oct - Sat, 24 Oct
Air Canada Logo
5:40 a.m. - 11:05 a.m.
YXU
-
TPA
5h 25m
1 stop
Air Canada Logo
12:00 p.m. - 9:40 p.m.
TPA
-
YXU
9h 40m
2 stops
C$ 552Air Canada
Mon, 19 Oct - Sat, 24 Oct
Air Canada Logo
10:05 a.m. - 8:07 p.m.
YXU
-
TPA
10h 02m
2 stops
Air Canada Logo
12:00 p.m. - 9:40 p.m.
TPA
-
YXU
9h 40m
2 stops
C$ 556Air Canada
Tue, 11 Aug - Thu, 13 Aug
United Airlines Logo
10:05 a.m. - 8:25 p.m.
YXU
-
LAX
13h 20m
2 stops
United Airlines Logo
7:23 p.m. - 2:55 p.m.
LAX
-
YXU
16h 32m
2 stops
C$ 583United Airlines
Thu, 11 Jun - Tue, 23 Jun
Multiple Airlines Logo
6:10 a.m. - 2:05 p.m.
YXU
-
LAX
10h 55m
1 stop
Multiple Airlines Logo
2:00 p.m. - 5:20 a.m.
LAX
-
YXU
12h 20m
2 stops
C$ 591Multiple Airlines
Thu, 1 Oct - Sun, 1 Nov
United Airlines Logo
5:40 a.m. - 9:31 p.m.
YXU
-
MSO
17h 51m
2 stops
United Airlines Logo
6:15 a.m. - 9:46 p.m.
MSO
-
YXU
13h 31m
2 stops
C$ 1,014United Airlines
Thu, 18 Jun - Thu, 25 Jun
Multiple Airlines Logo
6:10 a.m. - 4:35 p.m.
YXU
-
JFK
10h 25m
1 stop
Multiple Airlines Logo
10:52 a.m. - 5:20 a.m.
JFK
-
YXU
18h 28m
3 stops
C$ 1,292Multiple 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$ 219 (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$ 460 and C$ 431 respectively.

Good to know

Low seasonMay
Cheapest flightC$ 205
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from London to San Francisco

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 9752 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
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