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Cheap flights from the United States to London from $209

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to London departing on 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from the United States to London

Recent round-trip flight deals from the United States to London

Enter your travel dates to find the best prices.
WestJet Logo
6:05 pm - 5:20 am
LAX
-
YXU
8h 15m
1 stop
WestJet Logo
6:10 am - 2:05 pm
YXU
-
LAX
10h 55m
1 stop
$393WestJet
Thu, May 14 - Thu, May 21
WestJet Logo
1:00 pm - 5:20 am
SFO
-
YXU
13h 20m
1 stop
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
$399WestJet
Fri, May 15 - Fri, May 22
WestJet Logo
6:05 pm - 5:20 am
LAX
-
YXU
8h 15m
1 stop
WestJet Logo
6:10 am - 11:20 am
YXU
-
LAX
32h 10m
2 stops
$403WestJet
Thu, May 14 - Thu, May 21
Multiple Airlines Logo
1:00 pm - 5:20 am
SFO
-
YXU
13h 20m
1 stop
Multiple Airlines Logo
5:10 am - 10:50 am
YXU
-
SFO
8h 40m
1 stop
$406Multiple Airlines
Fri, May 15 - Fri, May 22
WestJet Logo
3:30 pm - 5:20 am
SAN
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 2:10 pm
YXU
-
SAN
11h 00m
1 stop
$408WestJet
Mon, Jun 22 - Mon, Jun 29
Multiple Airlines Logo
6:05 pm - 5:20 am
LAX
-
YXU
8h 15m
1 stop
Multiple Airlines Logo
12:20 pm - 7:20 pm
YXU
-
LAX
10h 00m
1 stop
$410Multiple Airlines
Thu, May 14 - Thu, May 21
Air Canada Logo
7:30 pm - 11:43 am
SFO
-
YXU
13h 13m
2 stops
Air Canada Logo
5:10 am - 10:50 am
YXU
-
SFO
8h 40m
1 stop
$433Air Canada
Sun, May 31 - Thu, Jun 4
Air Canada Logo
7:30 pm - 11:43 am
SFO
-
YXU
13h 13m
2 stops
Air Canada Logo
3:30 pm - 9:10 pm
YXU
-
SFO
8h 40m
1 stop
$434Air Canada
Sun, May 31 - Thu, Jun 4
United Airlines Logo
6:54 pm - 2:58 pm
SFO
-
YXU
17h 04m
2 stops
United Airlines Logo
5:10 am - 10:50 am
YXU
-
SFO
8h 40m
1 stop
$524United Airlines
Wed, Jun 3 - Sat, Jun 6
United Airlines Logo
6:19 pm - 5:33 pm
SJC
-
YXU
20h 14m
2 stops
United Airlines Logo
5:10 am - 10:30 pm
YXU
-
SJC
20h 20m
2 stops
$832United Airlines
Fri, May 15 - Sat, May 30

Air Canada flights from United States to London, Ontario

Our best Air Canada deals on United States to London, Ontario flight tickets
Air Canada
Apr 14
SFO8:30 amSan Francisco
9h 49m
1 stop
YXU9:19 pmLondon
Apr 28
YXU5:10 amLondon
8h 45m
1 stop
SFO10:55 amSan Francisco
$428
Air Canada
May 31
SFO7:30 pmSan Francisco
13h 13m
2 stops
YXU11:43 amLondon
Jun 4
YXU5:10 amLondon
8h 40m
1 stop
SFO10:50 amSan Francisco
$433
Air Canada
May 31
SFO7:30 pmSan Francisco
13h 13m
2 stops
YXU11:43 amLondon
Jun 4
YXU3:30 pmLondon
8h 40m
1 stop
SFO9:10 pmSan Francisco
$434

WestJet flights from United States to London, Ontario

Our best WestJet deals on United States to London, Ontario flight tickets
WestJet
May 13
SFO6:00 amSan Francisco
7h 45m
1 stop
YXU4:45 pmLondon
May 20
YXU6:10 amLondon
8h 50m
1 stop
SFO12:00 pmSan Francisco
$353
WestJet
May 14
LAX6:05 pmLos Angeles
8h 15m
1 stop
YXU5:20 amLondon
May 21
YXU6:10 amLondon
10h 55m
1 stop
LAX2:05 pmLos Angeles
$393
WestJet
May 15
SFO1:00 pmSan Francisco
13h 20m
1 stop
YXU5:20 amLondon
May 22
YXU2:40 pmLondon
10h 15m
2 stops
SFO9:55 pmSan Francisco
$399

momondo Fare Finder

 
Customize your flight search to find flights from United States to London, Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 3, 2026.
Use the filters below to find and compare flights from the United States to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 5/14

6:05 pm-5:20 am

1 stop8h 15m

London

Thu 5/21

6:10 am-2:05 pm

1 stop10h 55m

$393

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 5/15

1:00 pm-5:20 am

1 stop13h 20m

London

Fri 5/22

2:40 pm-9:55 pm

2 stops10h 15m

$399

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 5/14

6:05 pm-5:20 am

1 stop8h 15m

London

Thu 5/21

6:10 am-11:20 am

2 stops32h 10m

$403

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 5/15

1:00 pm-5:20 am

1 stop13h 20m

London

Fri 5/22

5:10 am-10:50 am

1 stop8h 40m

$406

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 6/22

3:30 pm-5:20 am

1 stop10h 50m

London

Mon 6/29

6:10 am-2:10 pm

1 stop11h 00m

$408
Quickest round-trip

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 5/14

6:05 pm-5:20 am

1 stop8h 15m

London

Thu 5/21

12:20 pm-7:20 pm

1 stop10h 00m

$410

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 5/31

7:30 pm-11:43 am

2 stops13h 13m

London

Thu 6/4

5:10 am-10:50 am

1 stop8h 40m

$433

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 5/31

7:30 pm-11:43 am

2 stops13h 13m

London

Thu 6/4

3:30 pm-9:10 pm

1 stop8h 40m

$434

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 6/3

6:54 pm-2:58 pm

2 stops17h 04m

London

Sat 6/6

5:10 am-10:50 am

1 stop8h 40m

$524

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 5/15

6:19 pm-5:33 pm

2 stops20h 14m

London

Sat 5/30

5:10 am-10:30 pm

2 stops20h 20m

$832

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from United States to London, Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on United States to London, Ontario flights?

No. A direct flight is the cheapest option for a flight between United States to London, Ontario.

Cheap United States to London, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to London, Ontario

Fastest flight time

4h 04m

Direct flights

None
The fastest flight from United States to London, Ontario takes 4h 04m
There are no direct flights from United States to London, Ontario. There are no popular flight routes from United States to London, Ontario.
Search flight deals

Frequently asked questions about flying from the United States to London, Ontario

  • When did momondo last update prices for flights from United States to London Airport?

    Prices for flights from United States to London Airport were last updated today.

  • How many operators does momondo search for flights from United States to London Airport?

  • How old do you have to be to fly from United States to London Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to London Airport.

  • What documentation or ID do you need to fly to London Airport?

    The travel and health documents you'll need for your trip to London Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from United States to London, Ontario?

Best airlines flying from United States to London, Ontario

Compare and see reviews for airlines that fly from United States to London, Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $210Free CancellationRating
7.1
10,886 reviews
Search Air Canada flights

Traveling to a place near London?

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

Why use momondo?

Why should I use momondo to find a flight deal from United States to London?

It is quick and easy to find United States to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from United States to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from United States with this policy.

How can momondo help me find flights from United States to London?

momondo helps you find the best flight between United States and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from United States to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from United States and alert you when they change.

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