C$ 231 Find Cheap Flights from the United States to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 23/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 523
WestJet
Mon 25/5Thu 28/5
ORD - YXU • 1 stop
Cheapest one-way flights
C$ 231
WestJet
Thu 23/4
JFK - YXU • 1 stop
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers six extra inches of legroom.
WestJet's Extended Comfort seats include priority boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from the United States to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from the United States to London 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 the United States to London

Mon, 25 May - Thu, 28 May
WestJet Logo
5:30 p.m. - 5:25 a.m.
ORD
-
YXU
10h 55m
1 stop
WestJet Logo
6:15 a.m. - 4:40 p.m.
YXU
-
ORD
11h 25m
1 stop
C$ 523WestJet
Sat, 23 May - Tue, 26 May
WestJet Logo
5:30 p.m. - 5:25 a.m.
ORD
-
YXU
10h 55m
1 stop
WestJet Logo
5:55 p.m. - 4:40 p.m.
YXU
-
ORD
23h 45m
1 stop
C$ 528WestJet
Sat, 11 Apr - Wed, 15 Apr
Air Canada Logo
8:30 a.m. - 9:18 p.m.
SFO
-
YXU
9h 48m
1 stop
Air Canada Logo
5:10 a.m. - 10:45 a.m.
YXU
-
SFO
8h 35m
1 stop
C$ 645Air Canada
Sat, 11 Apr - Wed, 15 Apr
Air Canada Logo
8:30 a.m. - 9:18 p.m.
SFO
-
YXU
9h 48m
1 stop
Air Canada Logo
5:10 a.m. - 10:45 a.m.
YXU
-
SFO
8h 35m
1 stop
C$ 646Air Canada
Sat, 11 Apr - Wed, 15 Apr
Air Canada Logo
8:30 a.m. - 9:18 p.m.
SFO
-
YXU
9h 48m
1 stop
Air Canada Logo
5:10 a.m. - 3:32 p.m.
YXU
-
SFO
13h 22m
2 stops
C$ 653Air Canada
Sat, 2 May - Fri, 5 Jun
WestJet Logo
5:30 p.m. - 5:25 a.m.
JFK
-
YXU
11h 55m
1 stop
WestJet Logo
2:35 p.m. - 4:35 p.m.
YXU
-
JFK
26h 00m
2 stops
C$ 657WestJet
Sun, 3 May - Fri, 5 Jun
Multiple Airlines Logo
11:04 a.m. - 5:25 a.m.
JFK
-
YXU
18h 21m
2 stops
Multiple Airlines Logo
5:55 p.m. - 4:35 p.m.
YXU
-
JFK
22h 40m
1 stop
C$ 665Multiple Airlines
Sun, 3 May - Sat, 6 Jun
Multiple Airlines Logo
11:04 a.m. - 5:25 a.m.
JFK
-
YXU
18h 21m
2 stops
Multiple Airlines Logo
5:55 p.m. - 4:35 p.m.
YXU
-
JFK
22h 40m
1 stop
C$ 676Multiple Airlines
Fri, 13 Mar - Fri, 20 Mar
United Airlines Logo
8:53 a.m. - 9:21 p.m.
SFO
-
YXU
9h 28m
1 stop
United Airlines Logo
9:25 a.m. - 3:25 p.m.
YXU
-
SFO
9h 00m
1 stop
C$ 748United Airlines
Sat, 14 Mar - Sat, 21 Mar
United Airlines Logo
6:44 p.m. - 5:05 p.m.
SFO
-
YXU
19h 21m
2 stops
United Airlines Logo
5:10 a.m. - 10:50 a.m.
YXU
-
SFO
8h 40m
1 stop
C$ 762United Airlines
Booking Insights

KAYAK's insights & trends for flights to London

Get data-powered insights and trends into flights to London to help you find the cheapest flights, the best time to fly and much more.

What are the most popular airlines flying to London?

The most popular airline among KAYAK users flying to London is Air Canada, followed by Porter Airlines and WestJet.

Expert advice

Expert advice for your flight to London

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, WestJet and United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonApril
Best time to beat the crowds (38% less expensive on average)
Most popular time to fly (8% more expensive on average)

FAQs - booking London flights

  • How far is London Airport from central London?

    There are 9 km between London downtown and London Airport.

  • What is the name of London’s airport?

    There is only 1 airport in London, called London Airport (YXU). It can also be referred to as London or London Intl.

  • How does KAYAK find such low prices on flights to London?

    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 to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London?

    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 to London 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 to London?

    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 to London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to London are there each week?

    Each week there are around 27 direct flights from within United States to London. The most common day for departures is Friday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to London

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Everything you need to know for your flight to London

Information on the airport you'll fly into in London