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Cheap flights from the United States to London from $125

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 11/18. 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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Find the cheapest flights from the United States to London

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

Multiple Airlines Logo
11:30 am - 5:12 amLAX-YXU
14h 42m2 stops
Multiple Airlines Logo
6:00 am - 5:16 pmYXU-LAX
14h 16m1 stop
$315Multiple Airlines
Find Deal
vie., oct. 17 - mié., oct. 22
WestJet Logo
6:05 pm - 5:12 amLAX-YXU
8h 07m1 stop
WestJet Logo
6:00 am - 5:16 pmYXU-LAX
14h 16m1 stop
$322WestJet
Find Deal
vie., oct. 17 - mié., oct. 22
WestJet Logo
12:35 pm - 5:12 amLAX-YXU
13h 37m2 stops
WestJet Logo
8:00 pm - 8:21 pmYXU-LAX
27h 21m2 stops
$328WestJet
Find Deal
vie., oct. 17 - mié., oct. 22
WestJet Logo
5:30 pm - 5:12 amORD-YXU
10h 42m1 stop
WestJet Logo
8:00 pm - 4:43 pmYXU-ORD
21h 43m1 stop
$340WestJet
Find Deal
jue., oct. 9 - mié., oct. 15
Air Canada Logo
4:15 pm - 9:21 pmTPA-YXU
5h 06m1 stop
Air Canada Logo
5:45 am - 11:02 amYXU-TPA
5h 17m1 stop
$349Air Canada
Find Deal
jue., feb. 19 - lun., feb. 23
Air Canada Logo
4:15 pm - 9:21 pmTPA-YXU
5h 06m1 stop
Air Canada Logo
9:25 am - 9:12 pmYXU-TPA
11h 47m2 stops
$354Air Canada
Find Deal
jue., feb. 19 - lun., feb. 23
Air Canada Logo
12:05 pm - 9:21 pmTPA-YXU
9h 16m2 stops
Air Canada Logo
9:25 am - 9:12 pmYXU-TPA
11h 47m2 stops
$359Air Canada
Find Deal
lun., nov. 17 - sáb., nov. 22
WestJet Logo
6:55 pm - 5:12 amLAX-YXU
31h 17m2 stops
WestJet Logo
8:00 pm - 8:21 pmYXU-LAX
27h 21m2 stops
$362WestJet
Find Deal
sáb., sep. 27 - mar., sep. 30
United Airlines Logo
12:25 am - 5:05 pmLAX-YXU
13h 40m2 stops
United Airlines Logo
9:25 am - 3:17 pmYXU-LAX
8h 52m1 stop
$442United Airlines
Find Deal
mié., feb. 18 - lun., feb. 23
United Airlines Logo
12:25 am - 5:05 pmLAX-YXU
13h 40m2 stops
United Airlines Logo
5:45 am - 6:45 pmYXU-LAX
16h 00m2 stops
$457United Airlines
Find Deal
mié., feb. 18 - lun., feb. 23

WestJet flights from United States to London, Ontario

Our best WestJet deals on United States to London, Ontario flight tickets
WestJet
Oct 17
LAX6:05 pmLos Angeles
8h 07m
1 stop
YXU5:12 amLondon
Oct 22
YXU6:00 amLondon
14h 16m
1 stop
LAX5:16 pmLos Angeles
$322
Find similar
WestJet
Oct 17
LAX12:35 pmLos Angeles
13h 37m
2 stops
YXU5:12 amLondon
Oct 22
YXU8:00 pmLondon
27h 21m
2 stops
LAX8:21 pmLos Angeles
$328
Find similar
WestJet
Oct 9
ORD5:30 pmChicago O'Hare Intl
10h 42m
1 stop
YXU5:12 amLondon
Oct 15
YXU8:00 pmLondon
21h 43m
1 stop
ORD4:43 pmChicago O'Hare Intl
$340
Find similar

United Airlines flights from United States to London, Ontario

Our best United Airlines deals on United States to London, Ontario flight tickets
United Airlines
Feb 18
LAX12:25 amLos Angeles
13h 40m
2 stops
YXU5:05 pmLondon
Feb 23
YXU9:25 amLondon
8h 52m
1 stop
LAX3:17 pmLos Angeles
$442
Find similar
United Airlines
Feb 18
LAX12:25 amLos Angeles
13h 40m
2 stops
YXU5:05 pmLondon
Feb 23
YXU5:45 amLondon
16h 00m
2 stops
LAX6:45 pmLos Angeles
$457
Find similar
United Airlines
Feb 19
TPA9:45 amTampa
11h 36m
2 stops
YXU9:21 pmLondon
Feb 23
YXU9:25 amLondon
10h 46m
2 stops
TPA8:11 pmTampa
$460
Find similar

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 septiembre 16, 2025.
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

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

vie. 10/17

11:30 am-5:12 am

2 stops14h 42m

London

mié. 10/22

6:00 am-5:16 pm

1 stop14h 16m

$315

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

vie. 10/17

6:05 pm-5:12 am

1 stop8h 07m

London

mié. 10/22

6:00 am-5:16 pm

1 stop14h 16m

$322

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

vie. 10/17

12:35 pm-5:12 am

2 stops13h 37m

London

mié. 10/22

8:00 pm-8:21 pm

2 stops27h 21m

$328

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

jue. 10/9

5:30 pm-5:12 am

1 stop10h 42m

London

mié. 10/15

8:00 pm-4:43 pm

1 stop21h 43m

$340

TampaLondon

TPA - YXU

TPAYXU

Tampa

jue. 2/19

4:15 pm-9:21 pm

1 stop5h 06m

London

lun. 2/23

5:45 am-11:02 am

1 stop5h 17m

$349

TampaLondon

TPA - YXU

TPAYXU

Tampa

jue. 2/19

4:15 pm-9:21 pm

1 stop5h 06m

London

lun. 2/23

9:25 am-9:12 pm

2 stops11h 47m

$354

TampaLondon

TPA - YXU

TPAYXU

Tampa

lun. 11/17

12:05 pm-9:21 pm

2 stops9h 16m

London

sáb. 11/22

9:25 am-9:12 pm

2 stops11h 47m

$359

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

sáb. 9/27

6:55 pm-5:12 am

2 stops31h 17m

London

mar. 9/30

8:00 pm-8:21 pm

2 stops27h 21m

$362

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

mié. 2/18

12:25 am-5:05 pm

2 stops13h 40m

London

lun. 2/23

9:25 am-3:17 pm

1 stop8h 52m

$442

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

mié. 2/18

12:25 am-5:05 pm

2 stops13h 40m

London

lun. 2/23

5:45 am-6:45 pm

2 stops16h 00m

$457

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

What is the cheapest day to depart on your flight to London, Ontario?

According to our data, Wednesday is the cheapest day to fly to London, Ontario from United States. The lowest ticket price found for a Wednesday departure recently was $199. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Friday is $549.

What is the cheapest time of day to depart on your flight to London, Ontario?

In the afternoon is the cheapest time of day to fly from United States to London, Ontario when you can find flight prices for as low as $284. Flying to London, Ontario in the afternoon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $514 per ticket.

What is the cheapest United States to London flight route?

Fly from Orlando to London for the best United States - London flight prices

What cabin class options are available on United States to London flights?

There is only 1 cabin class available to choose from on United States to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

Direct flights

None
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

  • 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
WestJetPriceFrom $162Free CancellationRating
7.2
3,093 reviews
Search WestJet flights
Air CanadaPriceFrom $178Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $183Free CancellationRating
7.4
8,924 reviews
Search United Airlines 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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