$83 Find Cheap Flights from London to the United States - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% 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
Newark1 stop$348
Los Angeles
Los Angeles2 stops$329
Las Vegas
Las Vegas1 stop$414
San Francisco
San Francisco1 stop$425
Miami
Miami2 stops$514
Boston
Boston2 stops$405
Fort Lauderdale
Fort Lauderdalenonstop$121
Seattle
Seattle1 stop$484
Tampa
Tampa1 stop$244
San Diego
San Diego1 stop$439
Honolulu
Honolulu2 stops$418
New York
Newark1 stop$348
Los Angeles
Los Angeles2 stops$329
Las Vegas
Las Vegas1 stop$414
San Francisco
San Francisco1 stop$425
Miami
Miami2 stops$514
Boston
Boston2 stops$405
Fort Lauderdale
Fort Lauderdalenonstop$121
Seattle
Seattle1 stop$484
Tampa
Tampa1 stop$244
San Diego
San Diego1 stop$439
Honolulu
Honolulu2 stops$418
Booking Insights

Price, demand and travel trends for London to the United States flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from London to the United States cheaper or more expensive than last year?

Fares from London to the United States are running about 27% higher than they were around this time last year, averaging $540 round-trip.

What are the cheapest fares from London to the United States right now?

Here are the cheapest round-trip fares from London to the United States on KAYAK in the last week:

• Fort Lauderdale (FLL) from $121
• Orlando (MCO) from $158
• Atlanta Hartsfield-Jackson (ATL) from $183
• Los Angeles (LAX) from $329
• Newark (EWR) from $348

What’s the cheapest month to fly from London to the United States?

April is the cheapest time of year to fly, with average fares of $487. Prices are highest in August, when average flight costs increase to around $727.

Which airport in the United States is the cheapest to fly to from London?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into the United States are:

• Fort Lauderdale (FLL) (avg. price $354)
• Seattle/Tacoma Intl (SEA) (avg. price $369)
• San Francisco (SFO) (avg. price $420)

What’s the cheapest day to fly from London to the United States?

Wednesday tends to be the cheapest day to fly from London to the United States, while Thursday is the most expensive. Fares run about 25% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from London to the United States?

Data from the past 12 months shows it's cheapest to fly to the United States during the evening with average prices of $509. The afternoon is the most expensive time to fly, with average prices of $625.

Key details for London to the United States flights

Low season

August

Cheapest flight

$83
Beat the crowds with an average 32% drop in travelers.
The most popular month to fly with an average 51% increase in travelers.
One-way flight from London to Orlando Airport

Your London to the United States flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from London to the United States?

    Yes. Fares from London to the United States are low right now. As a rule of thumb, a round-trip under $410 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from London to the United States?

    Over the past 12 months, round-trip fares from London to the United States have ranged from $410 to $717.

  • What are the main airports serving the United States?

    The United States has 700 airports. The three busiest are Fort Lauderdale (FLL) (22% of arrivals), Orlando (MCO) (13%) and Los Angeles (LAX) (12%).

  • What airlines fly nonstop from London to the United States?

    Based on the flight schedule for the next 3 months, just one airline regularly flies nonstop from London to the United States: Porter Airlines.

  • Where in the United States can I fly nonstop from London?

    Based on the flight schedule for the next 3 months, you can fly nonstop from London to two destinations: Fort Lauderdale and Orlando.

  • Is it cheaper to fly with a layover from London to the United States?

    No, nonstop flights from London to the United States are typically the cheaper option, averaging $275 over the past 12 months.

  • How long is a flight from London to the United States?

    Nonstop flights take 3h 04m on average. The fastest scheduled flight takes 2h 55m, from London (YXU) to Orlando (MCO).

  • Which cabin classes are available on flights from London to the United States?

    On flights from London to the United States you can book Economy Class or Business Class.

  • What are some popular landmarks in the United States?

    KAYAK travelers' favorite landmarks in the United States include:

    • Times Square
    • Universal Orlando Resort
    • New York City Center
    • San Antonio River Walk

  • What are the earliest and latest flights from London to the United States?

    The earliest nonstop flight from London to the United States departs at 6:15 am and the latest departs at 10:15 am. Nonstop flights take about 3h 04m.

Your guide to booking London to the United States flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for April when flights are typically cheapest and avoid August when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Thursday cost about 25% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Fort Lauderdale (FLL) is the cheapest airport to fly into from London. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in New York, which is the most popular destination in the United States. From there, it's easy to continue on to other popular destinations such as Las Vegas, Chicago and Orlando.
  • Whether you're trying to save time or money, the London to the United States nonstop route is usually your best option.

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.
8.0
Porter AirlinesOverall score based on 467 reviews
8.6Crew
7.6Food
8.0Comfort
8.2Boarding
6.9Entertainment
Airline reviews

A very comfortable flight, an additional wash room could have made it almost perfect.

10.0 ExcellentAnonymous, Aug 2026
Read more Porter Airlines reviews

A very comfortable flight, an additional wash room could have made it almost perfect.

Look, I understand that Kayak doesn't know I cancelled my flight on Porter. So I didn't actually fly yesterday. My main disappointment is with Porter ticket fare policies, and maybe you can pass this on to them: At my employer's request, I had booked a full fare ticket with no change fees since my trip to Toronto would likely be extended. Indeed, when I went to change my flight home to a later date, I was told the Fare Difference would cost an additional $550. So much for no change fees lol! While I had the agent on the line, I hopped over to Kayak, searched for new flights on the date in question, and saw a one-way ticket that got me home for only $355. So I got reimbursed about $450for the unused half of my roundtrip and bought a new ticket for $355. What good is a full fare / no change fee ticket if they screw you with "fare difference" BS. I'm still flying home on Porter Airlines but they just lost a hundred bucks with their stupid shenanigans.

I flew with Porter yesterday and overall had a positive experience. The flight was delayed, but the airline did a good job keeping passengers informed with frequent updates throughout the process. My biggest challenge was actually in Terminal 3, where the speaker system wasn’t very clear. It was often difficult to hear the announcements, which made it harder to follow updates at the gate. On board, the experience improved significantly. The aircraft felt very new and well maintained, and the seats were surprisingly comfortable for a short-haul flight. One of the flight attendants seemed a little disengaged, but the other was excellent—friendly, professional, and a pleasure to interact with. Despite the delay, the comfortable aircraft, clear communication from Porter, and positive onboard service made for a good overall experience.

It was okay. Had a thing with the front desk, she had me repack my suitcases to have them be under the weight restrictions, but then the other one was overweight, she argued with me about it when there were tons of people in line. Wasn’t great.

Organization and the adjusted times but the snacks could be of a bigger portion

Our flight was delayed by a bit. I appreciated that we were kept informed on why periodically. Boarding was fine. I overheard one flight attendant sounding very rude to a passenger who was not paying attention to the safety demonstration. The snacks were minimal as it was a short flight. There was no entertainment. Overall the flight was good back to LGA.

All good the seats a little tight and no I pad screen

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

The boarding process was going smoothly until the manager Bharti Singh insisted I check my duffle bag that fits under my seat. I travel with the duffle for this very reason. I know for a fact it fits under the seat. She was rude and aggressive, I was charged a check bag fee. She reminded me that I purchased a “basic”ticket. I fly Air Canada more then ten times a year and have spent thousands of dollars on tickets with Air Canada. Once the boarding closed there were many empty overhead bins. The airplane was an old, with no entertainment. The flight attendants were not pleasant, no smiles, not even friendly with each other. Over-all, seemed miserable. I fly all the time and have never experienced a flight crew so unpleasant. This was the worst flight I’ve ever had. If I didn’t have to fly Air Canada I would not use them again.

flight was full and no chance of getting a better sit. other than that. it was ok.

I didn't like that they wanted extra money to watch a movie on the other airlines it's free that I use anyway

Process of checking in , inToronto was quiet and peaceful.. Checking in, in America is very kaotic

No problems other than no seat back entertainment. Everyone was very pleasant

It's always very chill when flying to/from Billy Bishop airport and a fabulous view of Toronto on the way up/down. Free beer too on the plane!

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