Which airlines fly to United States?

Porter Airlines, Air Canada and WestJet are the top three most popular airlines that fly to United States from London, Ontario according to our data. Porter Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to United States. Keep in mind that there are 13 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London to United States?

WestJet, United Airlines, and Air Canada are the most popular carriers operating from London to United States

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?

As of March 2026, there are 4 operators available to choose from 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.

C$ 253 Cheap Flights from London to the United States in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:25 a.m. - 3:20 p.m.

YXU

SFO

8h 55m

1 stop

8:05 a.m. - 9:38 p.m.

SFO

YXU

10h 33m

2 stops

C$ 436Air Canada

Wed, 15 Apr - Tue, 5 May

6:10 p.m. - 11:46 p.m.

YXU

MCO

5h 36m

1 stop

12:05 p.m. - 5:33 p.m.

MCO

YXU

5h 28m

1 stop

C$ 472Air Canada

Tue, 2 Jun - Sat, 6 Jun

5:10 a.m. - 10:55 a.m.

YXU

SFO

8h 45m

1 stop

8:05 a.m. - 9:38 p.m.

SFO

YXU

10h 33m

2 stops

C$ 473Air Canada

Tue, 14 Apr - Sat, 2 May

12:20 p.m. - 10:31 p.m.

YXU

MCO

10h 11m

2 stops

12:05 p.m. - 5:33 p.m.

MCO

YXU

5h 28m

1 stop

C$ 477Air Canada

Tue, 2 Jun - Sat, 6 Jun

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

C$ 505WestJet

Fri, 8 May - Tue, 12 May

9:30 a.m. - 7:45 p.m.

YXU

MCO

10h 15m

2 stops

12:15 p.m. - 9:38 p.m.

MCO

YXU

9h 23m

2 stops

C$ 538United Airlines

Tue, 2 Jun - Sat, 6 Jun

9:30 a.m. - 7:02 p.m.

YXU

MCO

9h 32m

2 stops

9:00 a.m. - 5:33 p.m.

MCO

YXU

8h 33m

2 stops

C$ 539United Airlines

Wed, 20 May - Sat, 23 May

8:00 a.m. - 6:13 p.m.

YXU

LAS

13h 13m

1 stop

7:05 p.m. - 6:35 a.m.

LAS

YXU

8h 30m

1 stop

C$ 662WestJet

Tue, 14 Apr - Tue, 21 Apr

5:55 p.m. - 12:30 p.m.

YXU

LAS

21h 35m

2 stops

6:10 p.m. - 5:20 a.m.

LAS

YXU

8h 10m

1 stop

C$ 664WestJet

Tue, 5 May - Tue, 12 May

5:10 a.m. - 9:08 p.m.

YXU

LAS

18h 58m

2 stops

8:10 a.m. - 9:38 p.m.

LAS

YXU

10h 28m

2 stops

C$ 686United Airlines

Mon, 13 Apr - Tue, 12 May

Air Canada flights from London, Ontario to United States

Our best Air Canada deals on London, Ontario to United States flight tickets

Air Canada

15 Apr

YXU9:25 a.m.London

8h 55m

1 stop

SFO3:20 p.m.San Francisco

5 May

SFO8:05 a.m.San Francisco

10h 33m

2 stops

YXU9:38 p.m.London

C$ 436

Air Canada

2 Jun

YXU6:10 p.m.London

5h 36m

1 stop

MCO11:46 p.m.Orlando

6 Jun

MCO12:05 p.m.Orlando

5h 28m

1 stop

YXU5:33 p.m.London

C$ 472

Air Canada

14 Apr

YXU5:10 a.m.London

8h 45m

1 stop

SFO10:55 a.m.San Francisco

2 May

SFO8:05 a.m.San Francisco

10h 33m

2 stops

YXU9:38 p.m.London

C$ 473

WestJet flights from London, Ontario to United States

Our best WestJet deals on London, Ontario to United States flight tickets

WestJet

8 May

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

12 May

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

C$ 505

WestJet

14 Apr

YXU8:00 a.m.London

31h 05m

1 stop

SFO12:05 p.m.San Francisco

5 May

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

C$ 517

WestJet

15 Apr

YXU8:10 p.m.London

19h 00m

1 stop

SFO12:10 p.m.San Francisco

5 May

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

C$ 534

momondo Fare Finder

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

Cheapest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 15/4

9:25 a.m.-3:20 p.m.

1 stop8h 55m

San Francisco

Tue 5/5

8:05 a.m.-9:38 p.m.

2 stops10h 33m

C$ 436

Quickest round-trip

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 2/6

6:10 p.m.-11:46 p.m.

1 stop5h 36m

Orlando

Sat 6/6

12:05 p.m.-5:33 p.m.

1 stop5h 28m

C$ 472

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 14/4

5:10 a.m.-10:55 a.m.

1 stop8h 45m

San Francisco

Sat 2/5

8:05 a.m.-9:38 p.m.

2 stops10h 33m

C$ 473

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 2/6

12:20 p.m.-10:31 p.m.

2 stops10h 11m

Orlando

Sat 6/6

12:05 p.m.-5:33 p.m.

1 stop5h 28m

C$ 477

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 8/5

6:10 a.m.-12:00 p.m.

1 stop8h 50m

San Francisco

Tue 12/5

6:00 a.m.-4:45 p.m.

1 stop7h 45m

C$ 505

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 2/6

9:30 a.m.-7:45 p.m.

2 stops10h 15m

Orlando

Sat 6/6

12:15 p.m.-9:38 p.m.

2 stops9h 23m

C$ 538

LondonOrlando

YXU - MCO

YXUMCO

London

Wed 20/5

9:30 a.m.-7:02 p.m.

2 stops9h 32m

Orlando

Sat 23/5

9:00 a.m.-5:33 p.m.

2 stops8h 33m

C$ 539

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 14/4

8:00 a.m.-6:13 p.m.

1 stop13h 13m

Las Vegas Harry Reid Intl

Tue 21/4

7:05 p.m.-6:35 a.m.

1 stop8h 30m

C$ 662

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 5/5

5:55 p.m.-12:30 p.m.

2 stops21h 35m

Las Vegas Harry Reid Intl

Tue 12/5

6:10 p.m.-5:20 a.m.

1 stop8h 10m

C$ 664

LondonLas Vegas

YXU - LAS

YXULAS

London

Mon 13/4

5:10 a.m.-9:08 p.m.

2 stops18h 58m

Las Vegas Harry Reid Intl

Tue 12/5

8:10 a.m.-9:38 p.m.

2 stops10h 28m

C$ 686

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 31m
Direct flights	None

The fastest flight from London, Ontario to United States takes 3h 31m

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?
As of March 2026, there are 4 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from London, Ontario to United States is Boeing 737 MAX 8, representing 70.83% of all bookings. The subsequent popular models are Boeing 737-800 at 8.33%, Airbus A321-100/200 at 4.17%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 4.17%.

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 Airlines	PriceFrom C$ 161	Free Cancellation	Rating 6.0 266 reviews	Search Flair Airlines flights
United Airlines	PriceFrom C$ 178	Free Cancellation	Rating 7.4 9,476 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 219	Free Cancellation	Rating 7.2 3,300 reviews	Search WestJet flights
Air Canada	PriceFrom C$ 254	Free Cancellation	Rating 7.1 10,837 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.