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Cheap flights from London, Ontario to the United States from C$ 228

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to the United States departing on 21/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from London, Ontario to the United States

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
6:15 a.m. - 6:45 p.m.
YXU
-
SEA
15h 30m
1 stop
WestJet Logo
7:35 p.m. - 5:25 a.m.
SEA
-
YXU
6h 50m
1 stop
C$ 348WestJet
Sun, 24 May - Thu, 28 May
Air Canada Logo
5:40 p.m. - 11:50 p.m.
YXU
-
MCO
6h 10m
1 stop
Air Canada Logo
12:10 p.m. - 5:05 p.m.
MCO
-
YXU
4h 55m
1 stop
C$ 444Air Canada
Tue, 3 Mar - Tue, 10 Mar
Air Canada Logo
9:25 a.m. - 9:39 p.m.
YXU
-
SFO
15h 14m
1 stop
Air Canada Logo
7:30 a.m. - 9:21 p.m.
SFO
-
YXU
10h 51m
2 stops
C$ 464Air Canada
Sun, 1 Mar - Wed, 4 Mar
Air Canada Logo
5:40 p.m. - 11:50 p.m.
YXU
-
MCO
6h 10m
1 stop
Air Canada Logo
8:30 a.m. - 9:21 p.m.
MCO
-
YXU
12h 51m
2 stops
C$ 475Air Canada
Sun, 8 Mar - Wed, 18 Mar
Air Canada Logo
5:40 p.m. - 11:50 p.m.
YXU
-
MCO
6h 10m
1 stop
Air Canada Logo
12:10 p.m. - 5:05 p.m.
MCO
-
YXU
4h 55m
1 stop
C$ 478Air Canada
Tue, 3 Mar - Tue, 10 Mar
United Airlines Logo
5:40 p.m. - 1:28 a.m.
YXU
-
SFO
10h 48m
2 stops
United Airlines Logo
5:10 a.m. - 9:21 p.m.
SFO
-
YXU
13h 11m
2 stops
C$ 494United Airlines
Sun, 1 Mar - Wed, 4 Mar
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 503WestJet
Sun, 24 May - Mon, 8 Jun
Air Canada Logo
5:40 p.m. - 10:57 p.m.
YXU
-
TPA
5h 17m
1 stop
Air Canada Logo
10:25 p.m. - 8:46 a.m.
TPA
-
YXU
10h 21m
1 stop
C$ 511Air Canada
Sun, 22 Feb - Wed, 4 Mar
WestJet Logo
2:35 p.m. - 9:55 p.m.
YXU
-
SFO
10h 20m
2 stops
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 511WestJet
Sun, 24 May - Mon, 8 Jun
United Airlines Logo
9:25 a.m. - 6:27 p.m.
YXU
-
LAS
12h 02m
2 stops
United Airlines Logo
11:59 p.m. - 5:03 p.m.
LAS
-
YXU
14h 04m
2 stops
C$ 553United Airlines
Thu, 2 Apr - Mon, 6 Apr

United Airlines flights from London, Ontario to United States

Our best United Airlines deals on London, Ontario to United States flight tickets
United Airlines
1 Mar
YXU5:40 p.m.London
10h 48m
2 stops
SFO1:28 a.m.San Francisco
4 Mar
SFO5:10 a.m.San Francisco
13h 11m
2 stops
YXU9:21 p.m.London
C$ 494
United Airlines
2 Apr
YXU9:25 a.m.London
12h 02m
2 stops
LAS6:27 p.m.Las Vegas Harry Reid Intl
6 Apr
LAS11:59 p.m.Las Vegas Harry Reid Intl
14h 04m
2 stops
YXU5:03 p.m.London
C$ 553
United Airlines
27 Feb
YXU5:10 a.m.London
10h 49m
2 stops
MCO3:59 p.m.Orlando
5 Mar
MCO11:11 a.m.Orlando
10h 10m
2 stops
YXU9:21 p.m.London
C$ 569

Air Canada flights from London, Ontario to United States

Our best Air Canada deals on London, Ontario to United States flight tickets
Air Canada
3 Mar
YXU5:40 p.m.London
6h 10m
1 stop
MCO11:50 p.m.Orlando
10 Mar
MCO12:10 p.m.Orlando
4h 55m
1 stop
YXU5:05 p.m.London
C$ 444
Air Canada
1 Mar
YXU9:25 a.m.London
15h 14m
1 stop
SFO9:39 p.m.San Francisco
4 Mar
SFO7:30 a.m.San Francisco
10h 51m
2 stops
YXU9:21 p.m.London
C$ 464
Air Canada
8 Mar
YXU5:40 p.m.London
6h 10m
1 stop
MCO11:50 p.m.Orlando
18 Mar
MCO8:30 a.m.Orlando
12h 51m
2 stops
YXU9:21 p.m.London
C$ 475

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to United States 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 96,600 searches. Data last updated 3 February 2026.
Use the filters below to find and compare flights from London, Ontario to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 24/5

6:15 a.m.-6:45 p.m.

1 stop15h 30m

Seattle/Tacoma Intl

Thu 28/5

7:35 p.m.-5:25 a.m.

1 stop6h 50m

C$ 348

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 3/3

5:40 p.m.-11:50 p.m.

1 stop6h 10m

Orlando

Tue 10/3

12:10 p.m.-5:05 p.m.

1 stop4h 55m

C$ 444

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 1/3

9:25 a.m.-9:39 p.m.

1 stop15h 14m

San Francisco

Wed 4/3

7:30 a.m.-9:21 p.m.

2 stops10h 51m

C$ 464

LondonOrlando

YXU - MCO

YXUMCO

London

Sun 8/3

5:40 p.m.-11:50 p.m.

1 stop6h 10m

Orlando

Wed 18/3

8:30 a.m.-9:21 p.m.

2 stops12h 51m

C$ 475

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 3/3

5:40 p.m.-11:50 p.m.

1 stop6h 10m

Orlando

Tue 10/3

12:10 p.m.-5:05 p.m.

1 stop4h 55m

C$ 478

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 1/3

5:40 p.m.-1:28 a.m.

2 stops10h 48m

San Francisco

Wed 4/3

5:10 a.m.-9:21 p.m.

2 stops13h 11m

C$ 494

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 24/5

6:15 a.m.-12:00 p.m.

1 stop8h 45m

San Francisco

Mon 8/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 503

LondonTampa

YXU - TPA

YXUTPA

London

Sun 22/2

5:40 p.m.-10:57 p.m.

1 stop5h 17m

Tampa

Wed 4/3

10:25 p.m.-8:46 a.m.

1 stop10h 21m

C$ 511

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 24/5

2:35 p.m.-9:55 p.m.

2 stops10h 20m

San Francisco

Mon 8/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 511

LondonLas Vegas

YXU - LAS

YXULAS

London

Thu 2/4

9:25 a.m.-6:27 p.m.

2 stops12h 02m

Las Vegas Harry Reid Intl

Mon 6/4

11:59 p.m.-5:03 p.m.

2 stops14h 04m

C$ 553

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 the United States from

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

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 London to United States flight route?

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

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

There is only 1 cabin class available to choose from on London to United States 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 London, Ontario to United States flights?

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

Cheap London, Ontario to United States flight deals and tips

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

Fastest flight time

3h 43m

Direct flights

None
The fastest flight from London, Ontario to United States takes 3h 43m
There are no direct flights from London, Ontario to United States. There are no popular flight routes from London, Ontario to United States.
Search flight deals

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

    Prices for flights from London Airport to United States refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to United States.

  • What documentation or ID do you need to fly to United States?

    The travel and health documents you'll need for your trip to United States 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 United States. 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 London, Ontario to United States?

Best airlines flying from London, Ontario to United States

Compare and see reviews for airlines that fly from London, Ontario to United States with momondo
Airline
Rating
Free Cancellation
Price
Flair AirlinesPriceFrom C$ 159Free CancellationRating
6.0
263 reviews
Search Flair Airlines flights
United AirlinesPriceFrom C$ 176Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
WestJetPriceFrom C$ 217Free CancellationRating
7.2
3,255 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 252Free CancellationRating
7.1
10,685 reviews
Search Air Canada flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to United States for you.

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

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

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

Once you have performed a search for London to United States flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for London to United States flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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