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Cheap flights from London, Ontario to the United States from C$ 239

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 12/10. 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 London, Ontario to the United States

Cheap round-trip flights

WestJet Logo
6:00 a.m. - 8:21 p.m.YXU-LAS
17h 21m2 stops
WestJet Logo
6:20 p.m. - 5:12 a.m.LAS-YXU
7h 52m1 stop
C$ 344WestJet
Find Deal
Sun, 12 Oct - Fri, 17 Oct
WestJet Logo
6:00 a.m. - 8:21 p.m.YXU-LAS
17h 21m2 stops
WestJet Logo
1:25 p.m. - 5:12 a.m.LAS-YXU
12h 47m2 stops
C$ 350WestJet
Find Deal
Sun, 12 Oct - Fri, 17 Oct
WestJet Logo
8:00 p.m. - 5:34 p.m.YXU-LAS
24h 34m1 stop
WestJet Logo
6:20 p.m. - 5:12 a.m.LAS-YXU
7h 52m1 stop
C$ 351WestJet
Find Deal
Sun, 12 Oct - Fri, 17 Oct
WestJet Logo
8:10 p.m. - 2:20 p.m.YXU-SEA
21h 10m1 stop
WestJet Logo
3:10 p.m. - 6:34 a.m.SEA-YXU
12h 24m1 stop
C$ 363WestJet
Find Deal
Mon, 8 Dec - Tue, 27 Jan
Air Canada Logo
5:45 a.m. - 2:31 p.m.YXU-SEA
11h 46m2 stops
Air Canada Logo
5:50 a.m. - 9:21 p.m.SEA-YXU
12h 31m2 stops
C$ 379Air Canada
Find Deal
Fri, 5 Dec - Tue, 27 Jan
Air Canada Logo
5:45 a.m. - 5:07 p.m.YXU-MCO
11h 22m2 stops
Air Canada Logo
8:30 a.m. - 5:05 p.m.MCO-YXU
8h 35m2 stops
C$ 420Air Canada
Find Deal
Wed, 14 Jan - Wed, 21 Jan
United Airlines Logo
5:40 p.m. - 10:16 p.m.YXU-SEA
7h 36m1 stop
United Airlines Logo
12:40 p.m. - 5:05 p.m.SEA-YXU
25h 25m3 stops
C$ 463United Airlines
Find Deal
Wed, 17 Dec - Thu, 29 Jan
United Airlines Logo
5:45 a.m. - 1:47 p.m.YXU-SEA
11h 02m2 stops
United Airlines Logo
5:00 a.m. - 9:21 p.m.SEA-YXU
13h 21m3 stops
C$ 470United Airlines
Find Deal
Tue, 16 Dec - Thu, 29 Jan
Logo
8:10 p.m. - 2:20 p.m.YXU-SEA
21h 10m1 stop
Logo
11:10 p.m. - 7:12 p.m.SEA-YXU
17h 02m2 stops
C$ 479
Find Deal
Mon, 17 Nov - Sun, 30 Nov
Logo
8:10 p.m. - 7:11 a.m.YXU-SEA
14h 01m2 stops
Logo
3:10 p.m. - 7:12 p.m.SEA-YXU
25h 02m1 stop
C$ 482
Find Deal
Tue, 18 Nov - Sun, 30 Nov

United Airlines flights from London, Ontario to United States

Our best United Airlines deals on London, Ontario to United States flight tickets
United Airlines
17 Dec
YXU5:40 p.m.London
7h 36m
1 stop
SEA10:16 p.m.Seattle/Tacoma Intl
29 Jan
SEA12:40 p.m.Seattle/Tacoma Intl
25h 25m
3 stops
YXU5:05 p.m.London
C$ 463
Find similar
United Airlines
16 Dec
YXU5:45 a.m.London
11h 02m
2 stops
SEA1:47 p.m.Seattle/Tacoma Intl
29 Jan
SEA5:00 a.m.Seattle/Tacoma Intl
13h 21m
3 stops
YXU9:21 p.m.London
C$ 470
Find similar
United Airlines
12 Oct
YXU6:15 a.m.London
18h 42m
2 stops
LAS9:57 p.m.Las Vegas Harry Reid Intl
17 Oct
LAS6:22 p.m.Las Vegas Harry Reid Intl
17h 40m
3 stops
YXU3:02 p.m.London
C$ 474
Find similar

WestJet flights from London, Ontario to United States

Our best WestJet deals on London, Ontario to United States flight tickets
WestJet
12 Oct
YXU6:00 a.m.London
17h 21m
2 stops
LAS8:21 p.m.Las Vegas Harry Reid Intl
17 Oct
LAS6:20 p.m.Las Vegas Harry Reid Intl
7h 52m
1 stop
YXU5:12 a.m.London
C$ 344
Find similar
WestJet
12 Oct
YXU6:00 a.m.London
17h 21m
2 stops
LAS8:21 p.m.Las Vegas Harry Reid Intl
17 Oct
LAS1:25 p.m.Las Vegas Harry Reid Intl
12h 47m
2 stops
YXU5:12 a.m.London
C$ 350
Find similar
WestJet
12 Oct
YXU8:00 p.m.London
24h 34m
1 stop
LAS5:34 p.m.Las Vegas Harry Reid Intl
17 Oct
LAS6:20 p.m.Las Vegas Harry Reid Intl
7h 52m
1 stop
YXU5:12 a.m.London
C$ 351
Find similar

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 16 September 2025.
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

LondonLas Vegas

YXU - LAS

YXULAS

London

Sun 12/10

6:00 a.m.-8:21 p.m.

2 stops17h 21m

Las Vegas Harry Reid Intl

Fri 17/10

6:20 p.m.-5:12 a.m.

1 stop7h 52m

C$ 344

LondonLas Vegas

YXU - LAS

YXULAS

London

Sun 12/10

6:00 a.m.-8:21 p.m.

2 stops17h 21m

Las Vegas Harry Reid Intl

Fri 17/10

1:25 p.m.-5:12 a.m.

2 stops12h 47m

C$ 350

LondonLas Vegas

YXU - LAS

YXULAS

London

Sun 12/10

8:00 p.m.-5:34 p.m.

1 stop24h 34m

Las Vegas Harry Reid Intl

Fri 17/10

6:20 p.m.-5:12 a.m.

1 stop7h 52m

C$ 351

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 8/12

8:10 p.m.-2:20 p.m.

1 stop21h 10m

Seattle/Tacoma Intl

Tue 27/1

3:10 p.m.-6:34 a.m.

1 stop12h 24m

C$ 363

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 5/12

5:45 a.m.-2:31 p.m.

2 stops11h 46m

Seattle/Tacoma Intl

Tue 27/1

5:50 a.m.-9:21 p.m.

2 stops12h 31m

C$ 379

LondonOrlando

YXU - MCO

YXUMCO

London

Wed 14/1

5:45 a.m.-5:07 p.m.

2 stops11h 22m

Orlando

Wed 21/1

8:30 a.m.-5:05 p.m.

2 stops8h 35m

C$ 420

LondonSeattle

YXU - SEA

YXUSEA

London

Wed 17/12

5:40 p.m.-10:16 p.m.

1 stop7h 36m

Seattle/Tacoma Intl

Thu 29/1

12:40 p.m.-5:05 p.m.

3 stops25h 25m

C$ 463

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 16/12

5:45 a.m.-1:47 p.m.

2 stops11h 02m

Seattle/Tacoma Intl

Thu 29/1

5:00 a.m.-9:21 p.m.

3 stops13h 21m

C$ 470

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 17/11

8:10 p.m.-2:20 p.m.

1 stop21h 10m

Seattle/Tacoma Intl

Sun 30/11

11:10 p.m.-7:12 p.m.

2 stops17h 02m

C$ 479

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 18/11

8:10 p.m.-7:11 a.m.

2 stops14h 01m

Seattle/Tacoma Intl

Sun 30/11

3:10 p.m.-7:12 p.m.

1 stop25h 02m

C$ 482

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 day to depart on your flight to United States?

On average, the least expensive day to fly to United States from London, Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as C$ 504. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to United States on Saturday is C$ 739.

What is the cheapest time of day to depart on your flight to United States?

Our most recent data shows that the best time of day to fly to United States is in the afternoon. Flights from London, Ontario to United States during this time can be as low as C$ 578. Flights to United States are more costly in the morning, with an average ticket price of C$ 675. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights

None
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$ 161Free CancellationRating
6.0
249 reviews
Search Flair Airlines flights
United AirlinesPriceFrom C$ 192Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
WestJetPriceFrom C$ 242Free CancellationRating
7.2
3,091 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 305Free CancellationRating
7.1
10,000 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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