C$ 155 Find Cheap Flights from London to the United States – Compare and Save

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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 5 days
Sort by: Cheapest
Fort Lauderdale
3h 10mNonstop
from C$ 245per person
Orlando
2h 55mNonstop
from C$ 335per person
Las Vegas
9h 45m2 stops
from C$ 428per person
Tampa
5h 49m2 stops
from C$ 453per person
Miami
5h 38m2 stops
from C$ 488per person
Honolulu
12h 18m2 stops
from C$ 496per person
Seattle
8h 34m3 stops
from C$ 503per person
Fort Myers
5h 30m2 stops
from C$ 611per person
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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 London to the United States flight route?

The cheapest ticket to the United States from London found in the last 5 days was to Orlando, at C$ 312 round-trip. The most popular route is from London (YXU) to Orlando Airport (MCO), and the cheapest round-trip airline ticket found on this route in the last 5 days was C$ 312.

What is the cheapest time of day to fly to the United States?

The cheapest time of day to fly to the United States is generally in the morning, when round-trip flights cost C$ 439 on average. The most expensive time of day to fly to the United States is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 439.

Can I save money by flying with a layover from London to the United States?

No, with an average price for the route of C$ 609, prices are generally cheapest when you fly direct.

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

The cheapest month for flights from London to the United States is April, when tickets cost C$ 621 (return) on average. On the other hand, the most expensive months are September and August, when the average cost of round-trip tickets is C$ 1,651 and C$ 1,014 respectively.

Good to know

Low season

August

Cheapest flight

C$ 155
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly and prices are also 26% 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.

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from London to the following destinations at these prices or less: Fort Lauderdale C$ 176 one-way - C$ 364 round-trip

Reviews of the top 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 10213 reviews
6.7Food
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

The website check in was poor. Baggage fees were in US dollars but registered in Canadian dollars. The site would not accept my credit card. Scanning the passport was the worst. Someone from United needs to try the process. I’m not a novice with tech and I have to say this was a bad experience. Everything else was great.

10.0 ExcellentJ-D, Aug 2026
Read more United Airlines reviews

The website check in was poor. Baggage fees were in US dollars but registered in Canadian dollars. The site would not accept my credit card. Scanning the passport was the worst. Someone from United needs to try the process. I’m not a novice with tech and I have to say this was a bad experience. Everything else was great.

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Crew were welcoming, accommodating and they worked hard to find places for all carry on.

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

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

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

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 usb ports to charge phones laptops did not work.

Staff never asked passengers to bring their seat backs forward during landing. Was hoping to get a little relief from the passenger in front of me (I have long legs that I cannot stow in the overhead). Otherwise the flight was very pleasant.

Exorbitantly overpriced ticket. Flight was delayed as per usual with air Canada and there was zero refund or compensation.

Because you didn't have the tarmac clear and then had to unboard a plane I missed my connecting flight to CLE. Cost me a day ... a 30 dollar hotel hamburger ... then the next day THAT flight was an hour late to arrive ...

Delayed as usual with Air Canada. Checked the status of the fly online it said took off when the plain was still at the gate.

Delayed on the way in 2 hours!!! And now on the way home delayed then cancelled!!!!!

Too many delays. Seats too small. A budget airline. Will never fly Air Canada again.

Horrible, we were on a little DeHaviland 400 that was really small and shaky. I am 5' 4" and I had to duck my head to get in it felt like an old war plane.

It might have been closer to being on time. Maybe next time I could fly from London to Toronto?

Air Canada canceled my flight last minute and I gave me next’s day night time my flight. No accommodations at all. I have a function on Xmas eve. So I had to took rental car last minute.i never ever book a ticket with Canadian airlines at all.

More options for your flight from London to the United States

Complete your trip to the United States with a hotel stay or car rental