$164 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 8/27. 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

KAYAK searches hundreds of travel sites at once for deals on flights to the United States

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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 72 hours
New York
New York1 stop$350
Los Angeles
Los Angeles2 stops$320
Las Vegas
Las Vegas2 stops$270
Miami
Miami1 stop$404
San Francisco
San Francisco1 stop$276
Boston
Boston1 stop$558
Seattle
Seattle1 stop$286
Fort Lauderdale
Fort Lauderdale1 stop$335
Honolulu
Honolulu2 stops$620
San Diego
San Diego2 stops$455
New York
New York1 stop$350
Los Angeles
Los Angeles2 stops$320
Las Vegas
Las Vegas2 stops$270
Miami
Miami1 stop$404
San Francisco
San Francisco1 stop$276
Boston
Boston1 stop$558
Seattle
Seattle1 stop$286
Fort Lauderdale
Fort Lauderdale1 stop$335
Honolulu
Honolulu2 stops$620
San Diego
San Diego2 stops$455

Book Cheap London to the United States Plane Tickets

 
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, Sep 11 - Thu, Sep 18
WestJet Logo
6:00 am - 3:01 pmYXU-LAS
12h 01m2 stops
WestJet Logo
6:20 pm - 5:12 amLAS-YXU
7h 52m1 stop
$270WestJet
Find Deal
Fri, Aug 29 - Sun, Sep 7
WestJet Logo
6:00 am - 11:56 amYXU-SFO
8h 56m1 stop
WestJet Logo
6:05 pm - 5:12 amSFO-YXU
8h 07m1 stop
$276WestJet
Find Deal
Thu, Oct 16 - Sun, Oct 19
WestJet Logo
6:00 am - 3:01 pmYXU-LAS
12h 01m2 stops
WestJet Logo
8:00 am - 7:07 pmLAS-YXU
8h 07m1 stop
$282WestJet
Find Deal
Wed, Sep 10 - Tue, Sep 23
WestJet Logo
6:00 am - 11:54 amYXU-SFO
8h 54m1 stop
WestJet Logo
7:30 am - 7:07 pmSFO-YXU
8h 37m1 stop
$288WestJet
Find Deal
Thu, Oct 2 - Thu, Oct 9
Air Canada Logo
9:55 am - 2:58 pmYXU-MCO
5h 03m1 stop
Air Canada Logo
3:50 pm - 9:27 pmMCO-YXU
5h 37m1 stop
$310Air Canada
Find Deal
Thu, Oct 2 - Thu, Oct 9
Air Canada Logo
6:15 am - 4:30 pmYXU-MCO
10h 15m2 stops
Air Canada Logo
3:50 pm - 9:27 pmMCO-YXU
5h 37m1 stop
$312Air Canada
Find Deal
Sat, Sep 27 - Sat, Oct 4
 Logo
6:00 am - 11:54 amYXU-SFO
8h 54m1 stop
 Logo
10:15 am - 5:12 amSFO-YXU
15h 57m2 stops
Sat, Sep 27 - Sat, Oct 4
 Logo
6:00 am - 11:54 amYXU-SFO
8h 54m1 stop
 Logo
10:15 am - 5:12 amSFO-YXU
15h 57m3 stops
Sun, Sep 21 - Tue, Sep 30
United Airlines Logo
6:10 am - 2:47 pmYXU-LAS
11h 37m2 stops
United Airlines Logo
7:58 pm - 9:17 amLAS-YXU
10h 19m2 stops
$389United Airlines
Find Deal
Wed, Sep 3 - Mon, Sep 8
United Airlines Logo
9:55 am - 8:24 pmYXU-LAS
13h 29m2 stops
United Airlines Logo
12:59 am - 3:17 pmLAS-YXU
11h 18m2 stops
$390United Airlines
Find Deal
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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United States from London found in the last 72 hours was to Orlando, at $171 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 72 hours was $171.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $171, prices are generally cheapest when you fly direct.

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 July, when tickets cost $421 (return) on average. On the other hand, the most expensive months are August and October, when the average cost of round-trip tickets is $786 and $652 respectively.

Good to know

Low seasonJuly
Cheapest flight$164
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from London to Los Angeles

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.

  • 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 $408 on average. Morning departures are around 4% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $482.

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.
7.1
Air CanadaOverall score based on 9956 reviews
7.8Crew
7.1Comfort
7.3Boarding
6.8Entertainment
6.3Food
Airline reviews

Great breakfast and coffee …..fastest bag service I have ever had in NOLA

10.0 ExcellentAnonymous, Aug 2025YYZ - MSY
Read more Air Canada reviews

Great breakfast and coffee …..fastest bag service I have ever had in NOLA

Late departing. Late arriving. More worried about limiting bags on board. Free beer and wine a nice surprise.

Flight got delayed for no reason. And Air Canada was doing 3 boardings via the same gate. It was chaotic!

Wonderful airline. All staff were pleasant and helpful. What is sad is that it wasn’t grand gestures just everyday pleasantness and friendliness that are missing from the other airlines I have flown recently.

Friendly efficient crew, but plane had no way to charge phone. That is a near necessity with today’s travel where we carry out travel documents on our phones.

Orlando to Canada, despite being close and an international flight, the plane was not at all comfortable. It felt like the chair was being pushed forward, in addition to not having a TV and having to choose from a tiny glass of drink, for example, water or soda. I couldn't have both. When I asked the flight attendant for an extra glass of water, she looked at me with an ugly face. This is ridiculous. They don't want to give water to passengers. I will never fly with this airline again in my life.

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.

In a nutshell, my bag, the one I have to pay for, because now you can’t even bring a carry on, did not make it. I am still waiting for an update. The fact that not only were have to pay for it, but on top of that we are stuck without getting it, it’s ridiculous..

This was an excellent experience for a very short flight.

No space in overhead bin, one cookie, 2 oz of juice - is not customer service.

Very bead I am going to Vancouver to toronto. Not boarding receive. Before flight ✈️ time I have to take boarding. Boarding manager asking me pay $89 . Just flight ✈️ time before I pay .after provided the Boarding pass. Flair Airlines management not good. But kayak is best application.

Not good Even after I made my booking, I was charged $90 for my boarding pass. I have collected boarding pass i pay $90 near . Flair airline not good. Without pay no boarding pass.

The flight was smooth, but the seats are not comfortable. I was not able to sleep. The sizes for the personal item and carry-on are way smaller than other airlines.

Leg room was terrible and seats very narrow. Flight was also delayed.

The worst airline experience that I ever had in my life. The fare was cheap but boy do you pay for it when it comes to baggages, carry-ons, food on board and lack of available staff at check-in. Almost every other passenger on my flight had the same complaints and experience. We all bonded discussing our displeasure. My husband and I will definitely not be traveling with Flair Airlines. We'll take anyone else.

The most uncomfortable plane I ever fly on. The seats won't even recline a little. For a 5 hrs flight at night and tired it felt like torture

Seats in 1 res are dispersed all over the plane, even child was across

Personally, I will not use this fight again. The service is poor, you have to buy even water. They don't provide anything even sneak, you have to buy. They said Personally items for 7 kg. Then they use some measurements, if you have 7kg and if it's not getting inside of their measurements, you have to pay 80$ this is robbery. I will prefer other flight then this. I am désappointement taking this airplane.

It’s a shameful company. It ask as to go to counter to take the boarding pass, they simply send it by email, just to check the bags’ size in a smaller than normal template. DONT USE FLAIR! It will be more expensive than normal airlines at the end.

flight was okay, no wifi, no free drinks but worst of all they lost my son's bike for four days. Customer service was nonexistent - call a number that leaves you on perpetual hold, there's no baggage folks in the baggage claims area (in vancouver). we went up to international and nobody was at ticketing, went to domestic and they had us fill out a form. they could not tell us where the bag was. Anyway, highly recommend you drop an airtag for anything that's worth more than $500. My son's bike costs a lot more than that to replace; I was on pins and needles for four days.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.