$206 Find Cheap Flights from London to the United States - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from London to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
New York
New York1 stop$557
Los Angeles
Los Angeles2 stops$372
Las Vegas
Las Vegas2 stops$298
San Francisco
San Francisco1 stop$358
Miami
Miami1 stop$407
Boston
Boston1 stop$418
Fort Lauderdale
Fort Lauderdale1 stop$318
Seattle
Seattle1 stop$422
Tampa
Tampa1 stop$414
San Diego
San Diego1 stop$324
Honolulu
Honolulu2 stops$514
New York
New York1 stop$557
Los Angeles
Los Angeles2 stops$372
Las Vegas
Las Vegas2 stops$298
San Francisco
San Francisco1 stop$358
Miami
Miami1 stop$407
Boston
Boston1 stop$418
Fort Lauderdale
Fort Lauderdale1 stop$318
Seattle
Seattle1 stop$422
Tampa
Tampa1 stop$414
San Diego
San Diego1 stop$324
Honolulu
Honolulu2 stops$514

Book Cheap London to the United States Plane Tickets

 
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, Sep 17 - Tue, Sep 22
WestJet Logo
6:10 am - 4:35 pmYXU  London-LAS Las Vegas Harry Reid Intl
13h 25m2 stops Calgary Vancouver Intl
WestJet Logo
1:20 pm - 5:20 amLAS  Las Vegas Harry Reid Intl-YXU London
13h 00m2 stops Vancouver Intl Calgary
$298WestJet
Thu, Sep 17 - Tue, Sep 22
WestJet Logo
6:10 am - 4:35 pmYXU  London-LAS Las Vegas Harry Reid Intl
13h 25m2 stops Calgary Vancouver Intl
WestJet Logo
6:10 pm - 5:20 amLAS  Las Vegas Harry Reid Intl-YXU London
8h 10m1 stop Calgary
$300WestJet
Sun, Sep 13 - Thu, Sep 17
WestJet Logo
6:10 am - 12:55 pmYXU  London-LAS Las Vegas Harry Reid Intl
9h 45m1 stop Calgary
WestJet Logo
4:30 pm - 5:20 amLAS  Las Vegas Harry Reid Intl-YXU London
9h 50m1 stop Calgary
$310WestJet
Sun, Sep 13 - Thu, Sep 17
WestJet Logo
6:10 am - 4:35 pmYXU  London-LAS Las Vegas Harry Reid Intl
13h 25m2 stops Calgary Vancouver Intl
WestJet Logo
6:10 pm - 5:20 amLAS  Las Vegas Harry Reid Intl-YXU London
8h 10m1 stop Calgary
$312WestJet
Sun, Sep 13 - Thu, Sep 17
WestJet Logo
6:10 am - 4:35 pmYXU  London-LAS Las Vegas Harry Reid Intl
13h 25m2 stops Calgary Vancouver Intl
WestJet Logo
1:20 pm - 5:20 amLAS  Las Vegas Harry Reid Intl-YXU London
13h 00m2 stops Vancouver Intl Calgary
$316WestJet
Thu, Sep 17 - Tue, Sep 22
WestJet Logo
5:55 pm - 5:15 pmYXU  London-LAS Las Vegas Harry Reid Intl
26h 20m1 stop Calgary
WestJet Logo
6:10 pm - 5:20 amLAS  Las Vegas Harry Reid Intl-YXU London
8h 10m1 stop Calgary
$332WestJet
Wed, Oct 7 - Wed, Oct 14
WestJet Logo
6:10 am - 9:55 pmYXU  London-SFO San Francisco
18h 45m1 stop Calgary
WestJet Logo
6:05 pm - 5:20 amSFO  San Francisco-YXU London
8h 15m1 stop Calgary
$358WestJet
Fri, Oct 2 - Mon, Oct 5
Air Canada Logo
5:40 am - 10:44 amYXU  London-SFO San Francisco
8h 04m1 stop Toronto Pearson Intl
Air Canada Logo
4:30 pm - 9:20 amSFO  San Francisco-YXU London
13h 50m2 stops Vancouver Intl Toronto Pearson Intl
$377Air Canada
Fri, Oct 2 - Mon, Oct 5
Air Canada Logo
5:40 am - 3:21 pmYXU  London-SFO San Francisco
12h 41m2 stops Toronto Pearson Intl Vancouver Intl
Air Canada Logo
4:30 pm - 9:20 amSFO  San Francisco-YXU London
13h 50m2 stops Vancouver Intl Toronto Pearson Intl
$378Air Canada
Mon, Nov 2 - Thu, Nov 5
WestJet Logo
6:40 am - 11:10 amYXU  London-LAS Las Vegas Harry Reid Intl
31h 30m2 stops Calgary Vancouver Intl
WestJet Logo
4:45 pm - 5:35 amLAS  Las Vegas Harry Reid Intl-YXU London
9h 50m1 stop Calgary
$378WestJet
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?

The cheapest month for flights from London to the United States is November, when tickets cost $418 (return) on average. On the other hand, the most expensive months are September and March, when the average cost of round-trip tickets is $746 and $675 respectively.

Find deals

Good to know

Low season

August

Cheapest flight

$206
Best time to beat the crowds but there is an average 28% increase in price.
Most popular time to fly and prices are also 25% 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 travelers 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 airline 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.
7.1
Air CanadaOverall score based on 11530 reviews
7.8Crew
7.3Boarding
7.1Comfort
6.3Food
6.8Entertainment
Airline reviews

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.

4.0 OkayAnonymous, Aug 2026
Read more Air Canada reviews

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!!!!!

Delay in luggage again for the second time of the trip. I would not advise using air Canada or at least I will never check in a luggage. Luggage issue overshadows the nice crew members unfortunately.

The baggage drop-off for Air Canada in Toronto for passengers flying international was terrible. One of the worst experiences I have ever had. The line was ridiculous; there was no one to help facilitate people avoid confusion, and the baggage system for the line I finally ended up in had to be re-booted right as I got to it.

Flight got canceled. Instead of the booking me for the next flight at night I was booked for the following day at a later time. I was able to fly out that night because I had to call and deal with a human!!!

No charger and no entertainment on the way back. The plane's super old-like 80s old-with zero TVs. At least the free Wi-Fi works, so definitely bring your iPad. Also, no meal on this 7-hour flight.

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.

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

Information on your arrival and departure airports

London (YXU)