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Cheap flights from the United States to London, ON from C$ 194

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
17 Jun — 24 Jun1
1 adult

Cheap flight deals from USA to London

Keep the following information in mind while searching for USA to London flight deals. Data was last updated 12 June 2025.

Round-trip from

C$ 405

One-way from

C$ 194
WestJet
  • WestJet
  • 13/7-20/7
  • 2 total stops
  • 36h 34m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 25/6
  • 2 total stops
  • 11h 29m total
  • USA to London
Search Deals

Find flight deals from USA to London

Cheapest flights from USA to London
Explore the most affordable flight options available from USA to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Sun 13/76:05 p.m.SFO - YXU
1 stop8h 09mWestJet
Sun 20/78:00 p.m.YXU - SFO
1 stop28h 25mWestJet
Deal found 11/6C$ 405
Tue 9/94:35 p.m.SFO - YXU
2 stops13h 42mAir Canada
Fri 26/96:15 a.m.YXU - SFO
1 stop9h 43mAir Canada
Deal found 10/6C$ 438
Sun 13/76:05 p.m.SFO - YXU
1 stop8h 09mMultiple Airlines
Wed 16/76:00 a.m.YXU - SFO
2 stops29h 00mMultiple Airlines
Deal found 12/6C$ 457
Thu 16/103:50 p.m.MCO - YXU
1 stop5h 37mAir Canada
Mon 20/106:15 a.m.YXU - MCO
1 stop5h 18mAir Canada
Deal found 10/6C$ 459
Sun 13/711:05 p.m.SFO - YXU
2 stops12h 57mUnited Airlines
Wed 16/73:40 p.m.YXU - SFO
2 stops12h 17mUnited Airlines
Deal found 12/6C$ 570
Fri 25/73:50 p.m.ORD - YXU
1 stop4h 37mAir Canada
Fri 1/86:15 a.m.YXU - ORD
1 stop3h 54mAir Canada
Deal found 10/6C$ 574
Tue 8/710:43 a.m.ORD - YXU
2 stops33h 17mMultiple Airlines
Tue 15/76:15 a.m.YXU - ORD
1 stop3h 54mMultiple Airlines
Deal found 10/6C$ 597
Tue 9/1212:20 p.m.MCO - YXU
2 stops9h 25mUnited Airlines
Wed 24/129:45 a.m.YXU - MCO
2 stops14h 39mUnited Airlines
Deal found 12/6C$ 625
Mon 23/611:00 a.m.EWR - YXU
1 stop3h 57mAir Canada
Thu 26/69:55 a.m.YXU - EWR
1 stop5h 37mAir Canada
Deal found 9/6C$ 645
Mon 23/610:30 a.m.LGA - YXU
1 stop4h 27mAir Canada
Thu 26/63:35 p.m.YXU - LGA
1 stop4h 23mAir Canada
Deal found 9/6C$ 645
Thu 3/76:30 a.m.MCO - YXU
3 stops38h 30mMultiple Airlines
Mon 7/79:45 p.m.YXU - MCO
2 stops21h 59mMultiple Airlines
Deal found 11/6C$ 662
Sat 26/77:20 a.m.EWR - YXU
2 stops21h 54mMultiple Airlines
Sat 2/88:00 p.m.YXU - EWR
3 stops34h 05mMultiple Airlines
Deal found 11/6C$ 677

Cheapflights Fare Finder

Customize your flight search to find flights from USA to London 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, Cheapflights users made 629,999 searches. Data last updated 12 June 2025.
Use the filters below to find and compare flights from the United States to London that are best for you.

Fly from

USA

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 13/7

6:05 p.m.-5:14 a.m.

1 stop8h 09m

London

Sun 20/7

8:00 p.m.-9:25 p.m.

1 stop28h 25m

C$ 405

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/9

4:35 p.m.-9:17 a.m.

2 stops13h 42m

London

Fri 26/9

6:15 a.m.-12:58 p.m.

1 stop9h 43m

C$ 438

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 13/7

6:05 p.m.-5:14 a.m.

1 stop8h 09m

London

Wed 16/7

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

2 stops29h 00m

C$ 457

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 16/10

3:50 p.m.-9:27 p.m.

1 stop5h 37m

London

Mon 20/10

6:15 a.m.-11:33 a.m.

1 stop5h 18m

C$ 459

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 13/7

11:05 p.m.-3:02 p.m.

2 stops12h 57m

London

Wed 16/7

3:40 p.m.-12:57 a.m.

2 stops12h 17m

C$ 570

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 25/7

3:50 p.m.-9:27 p.m.

1 stop4h 37m

London

Fri 1/8

6:15 a.m.-9:09 a.m.

1 stop3h 54m

C$ 574

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 8/7

10:43 a.m.-9:00 p.m.

2 stops33h 17m

London

Tue 15/7

6:15 a.m.-9:09 a.m.

1 stop3h 54m

C$ 597

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Tue 9/12

9:50 a.m.-9:45 p.m.

2 stops11h 55m

London

Sun 28/12

9:45 a.m.-12:24 a.m.

2 stops14h 39m

C$ 625

NewarkLondon

EWR - YXU

EWRYXU

Newark

Mon 23/6

11:00 a.m.-2:57 p.m.

1 stop3h 57m

London

Thu 26/6

9:55 a.m.-3:32 p.m.

1 stop5h 37m

C$ 645

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Mon 23/6

10:30 a.m.-2:57 p.m.

1 stop4h 27m

London

Thu 26/6

3:35 p.m.-7:58 p.m.

1 stop4h 23m

C$ 645

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 48 results
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Best time to book a flight from USA to London

Have a flexible travel schedule? Discover the best time to fly to London from USA with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to London

What is the cheapest month to book a flight from USA to London, Ontario?

Currently, October is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 243). Flying from USA to London, Ontario in December is currently the most expensive (average of C$ 478). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to YXU?

Find hourly flight availability from USA to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to London, Ontario as you normally would.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London, Ontario ranges from 70.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London, Ontario when rainfall is around 70.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 12 June 2025.
See what other customers who have flown with Delta, United Airlines and WestJet from USA to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from USA to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to London from United States?

    London (YXU), located 8.6 km from the city centre, is the airport you fly into when you book flights from United States to London.

  • What are the cheapest airlines to fly from USA to London, Ontario one-way?

    C$ 194 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from C$ 202 and C$ 254, respectively.

  • What are the most popular routes from USA to London, Ontario?

    The most popular route from USA to London, Ontario is Chicago O'Hare Intl - London. You may also consider Orlando - London or San Francisco - London.

  • Can I find deals for flights from USA to London that include hotel bookings?

    Yes. In addition to deals on USA to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to London.

  • Can I find deals for business class flights from USA to London?

    Yes. Cheapflights offers flight deals from USA to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to London, Ontario?

    Currently, October is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 243). Flying from USA to London, Ontario in December is currently the most expensive (average of C$ 478). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Yes, Cheapflights offers price alerts on USA to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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