Find flights
When to book
Airlines
FAQs

Cheap flights from the United States to London, ON from C$ 197

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
27 Feb — 6 Mar1
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 22 February 2025.

Round-trip from

C$ 464

One-way from

C$ 197

Popular in

November

Cheapest in

December

Good one-way deal

C$ 70 or less
7/4-14/4
  • 7/4-14/4
  • 3 total stops
  • 41h 14m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 3/6
  • 1 total stop
  • 8h 09m total
  • USA to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 72 potential savings vs. average RT price).
Search Deals
Price to beat on a one-way flight from 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 22 February 2025.

Mon 7/48:36 p.m.ATL - YXU
2 stops22h 37mMultiple Airlines
Mon 14/412:20 p.m.YXU - ATL
1 stop18h 37mMultiple Airlines
Deal found 21/2C$ 464
Sun 30/310:52 p.m.SFO - YXU
1 stop7h 21mUnited Airlines
Tue 29/43:25 p.m.YXU - SFO
1 stop9h 24mUnited Airlines
Deal found 22/2C$ 468
Wed 19/38:53 a.m.SFO - YXU
1 stop8h 27mAir Canada
Mon 31/33:20 p.m.YXU - SFO
1 stop9h 17mAir Canada
Deal found 21/2C$ 480
Mon 7/411:04 a.m.ORD - YXU
3 stops32h 15mMultiple Airlines
Mon 14/412:20 p.m.YXU - ORD
1 stop20h 44mMultiple Airlines
Deal found 21/2C$ 484
Mon 7/48:21 p.m.DFW - YXU
2 stops21h 52mMultiple Airlines
Mon 14/412:20 p.m.YXU - DFW
1 stop11h 27mMultiple Airlines
Deal found 21/2C$ 487
Mon 7/410:00 a.m.EWR - YXU
3 stops33h 13mMultiple Airlines
Mon 14/412:20 p.m.YXU - EWR
2 stops28h 39mMultiple Airlines
Deal found 21/2C$ 505
Thu 17/77:30 a.m.SFO - YXU
1 stop8h 39mWestJet
Sun 20/78:00 p.m.YXU - SFO
1 stop19h 05mWestJet
Deal found 21/2C$ 537
Mon 7/41:41 p.m.SJC - YXU
2 stops26h 32mMultiple Airlines
Mon 14/412:20 p.m.YXU - SJC
2 stops33h 17mMultiple Airlines
Deal found 21/2C$ 542
Mon 7/48:04 p.m.SEA - YXU
2 stops20h 09mMultiple Airlines
Mon 14/412:20 p.m.YXU - SEA
3 stops33h 31mMultiple Airlines
Deal found 21/2C$ 568
Sat 31/57:05 a.m.SEA - YXU
1 stop9h 04mWestJet
Sat 7/66:00 a.m.YXU - SEA
1 stop9h 58mWestJet
Deal found 21/2C$ 650
Thu 10/47:05 p.m.SEA - YXU
2 stops11h 08mAir Canada
Wed 16/43:25 p.m.YXU - SEA
1 stop9h 01mAir Canada
Deal found 20/2C$ 715
Tue 20/54:45 p.m.LGA - YXU
1 stop4h 43mAir Canada
Sat 24/56:15 a.m.YXU - LGA
1 stop4h 36mAir Canada
Deal found 20/2C$ 767

Find flights from USA to London within your budget

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 22 February 2025.

Fly from

USA

Fly to

London

Route

Depart

Return

Price

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Mon 7/4

8:36 p.m.-7:13 p.m.

2 stops22h 37m

London

Mon 14/4

12:20 p.m.-6:57 a.m.

1 stop18h 37m

C$ 464

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 30/3

10:52 p.m.-9:13 a.m.

1 stop7h 21m

London

Wed 9/4

3:25 p.m.-8:07 p.m.

1 stop7h 42m

C$ 468

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 19/3

8:53 a.m.-8:20 p.m.

1 stop8h 27m

London

Mon 31/3

3:20 p.m.-9:37 p.m.

1 stop9h 17m

C$ 480

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 7/4

11:04 a.m.-8:19 p.m.

3 stops32h 15m

London

Mon 14/4

12:20 p.m.-8:04 a.m.

1 stop20h 44m

C$ 484

DallasLondon

DFW - YXU

DFWYXU

Dallas/Fort Worth

Mon 7/4

8:21 p.m.-7:13 p.m.

2 stops21h 52m

London

Mon 14/4

12:20 p.m.-10:47 p.m.

1 stop11h 27m

C$ 487

NewarkLondon

EWR - YXU

EWRYXU

Newark

Mon 7/4

10:00 a.m.-7:13 p.m.

3 stops33h 13m

London

Mon 14/4

12:20 p.m.-4:59 p.m.

2 stops28h 39m

C$ 505

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 17/7

7:30 a.m.-7:09 p.m.

1 stop8h 39m

London

Sun 20/7

8:00 p.m.-12:05 p.m.

1 stop19h 05m

C$ 537

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Mon 7/4

1:41 p.m.-7:13 p.m.

2 stops26h 32m

London

Mon 14/4

12:20 p.m.-6:37 p.m.

2 stops33h 17m

C$ 542

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 7/4

8:04 p.m.-7:13 p.m.

2 stops20h 09m

London

Mon 14/4

12:20 p.m.-6:51 p.m.

3 stops33h 31m

C$ 568

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sat 31/5

7:05 a.m.-7:09 p.m.

1 stop9h 04m

London

Sat 7/6

6:00 a.m.-12:58 p.m.

1 stop9h 58m

C$ 650

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 52 results
1
2
3
...
6

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.

Travel insights for flights from USA to London

Get recent, data-driven insights about flights from USA to London including ideal travel times, pricing trends, and more.

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 April is currently the most expensive (average of C$ 496). 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 22 February 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 22 February 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
8,203 reviews
Check prices

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Overall

8.0

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
8,203 reviews
Delta
8.0
Very good
8,203 reviews
Check prices

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Overall

8.0

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
8,754 reviews
Delta
8.0
Very good
8,203 reviews
Check prices

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Overall

8.0

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
2,800 reviews
Delta
8.0
Very good
8,203 reviews
Check prices

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Overall

8.0

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
7.0
Good
8,758 reviews
Delta
8.0
Very good
8,203 reviews
Check prices

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Overall

8.0

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$ 197 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from C$ 207 and C$ 213, respectively.

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

    The most popular route from USA to London, Ontario is San Francisco - London. You may also consider Newark - London or New York John F Kennedy Intl - 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 April is currently the most expensive (average of C$ 496). 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

Travelling to a place near the United States?

Book flights to the United States if you plan to visit one of these locations
Grand Bend
Port Stanley

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for USA to London

See prices for flight routes from nearby airports that may be better suited for you.
Vancouver Intl to Pearson Intl flights
Vancouver Intl to Pierre Elliott Trudeau Intl flights
Vancouver Intl to Toronto Island flights
Abbotsford to Pearson Intl flights
Edmonton to Pearson Intl flights
Calgary to Pearson Intl flights
Newark to Pearson Intl flights
Mexico City to Pearson Intl flights
Toronto Island to Pierre Elliott Trudeau Intl flights
Halifax to Toronto Island flights
LaGuardia to Pearson Intl flights
John F Kennedy Intl to Pearson Intl flights
Pearson Intl to Pierre Elliott Trudeau Intl flights
Newark to Toronto Island flights
Newark to Pierre Elliott Trudeau Intl flights
Halifax to Pearson Intl flights
Pierre Elliott Trudeau Intl to Pearson Intl flights
Winnipeg to Pearson Intl flights
Vancouver Intl to Ottawa flights
LaGuardia to Pierre Elliott Trudeau Intl flights
San Francisco to Pearson Intl flights
Vancouver Intl to Region of Waterloo Intl flights
Calgary to Pierre Elliott Trudeau Intl flights
Halifax to Pierre Elliott Trudeau Intl flights
Pierre Elliott Trudeau Intl to Toronto Island flights
Calgary to Toronto Island flights
Los Angeles to Pearson Intl flights
Boston to Pearson Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Mexico City to Pierre Elliott Trudeau Intl flights
Vancouver Intl to Hamilton flights
Boston to Toronto Island flights
O'Hare Intl to Pearson Intl flights
Dallas/Fort Worth to Pearson Intl flights
Québec City to Pearson Intl flights
Edmonton to Toronto Island flights
Dulles Intl to Pearson Intl flights
Calgary to Region of Waterloo Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Edmonton to Pierre Elliott Trudeau Intl flights
Winnipeg to Toronto Island flights
Québec City to Toronto Island flights
Halifax to Ottawa flights
Saskatoon to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
St. John's to Pearson Intl flights
Seattle to Pearson Intl flights
Atlanta to Pearson Intl flights
Calgary to Ottawa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from USA to London?

Deals for USA to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from USA to London?

Cheapflights simply makes it quick and affordable to book flights from USA to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from USA to London with no change fees?

Yes, we can. To see specific flights from USA to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from USA to London become cheaper?

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.