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Cheap flights from the United States to London, ON from C$ 74

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 14/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
1 Apr — 8 Apr1
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 27 March 2025.

Round-trip from

C$ 420

One-way from

C$ 74

Popular in

November

Cheapest in

December

Average price

C$ 512
WestJet
  • WestJet
  • 10/6-17/6
  • 2 total stops
  • 17h 14m total
  • USA to London
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Flair Airlines
  • Flair Airlines
  • 14/4
  • Nonstop
  • 3h 10m 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
Average for round-trip flights in March 2025
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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 27 March 2025.

Fri 28/38:10 a.m.MCO - YXU
Nonstop3h 10mFlair Airlines
Mon 31/312:20 p.m.YXU - MCO
Nonstop3h 10mFlair Airlines
Deal found 27/3C$ 244
Tue 10/66:05 p.m.SFO - YXU
1 stop8h 09mWestJet
Tue 17/66:00 a.m.YXU - SFO
1 stop9h 05mWestJet
Deal found 26/3C$ 420
Sat 10/512:10 a.m.SFO - YXU
2 stops11h 48mAir Canada
Sun 18/53:35 p.m.YXU - SFO
1 stop9h 14mAir Canada
Deal found 26/3C$ 471
Sun 11/57:30 a.m.SFO - YXU
1 stop18h 44mMultiple Airlines
Sun 18/53:35 p.m.YXU - SFO
1 stop9h 14mMultiple Airlines
Deal found 26/3C$ 479
Thu 22/56:00 a.m.MCO - YXU
2 stops15h 28mMultiple Airlines
Tue 27/56:15 a.m.YXU - MCO
1 stop5h 06mMultiple Airlines
Deal found 25/3C$ 531
Thu 22/58:25 p.m.MCO - YXU
1 stop12h 53mAir Canada
Tue 27/56:15 a.m.YXU - MCO
1 stop5h 06mAir Canada
Deal found 25/3C$ 549
Fri 9/57:05 p.m.MCO - YXU
2 stops19h 53mUnited Airlines
Fri 16/56:15 a.m.YXU - MCO
2 stops18h 12mUnited Airlines
Deal found 26/3C$ 552
Sat 10/59:02 p.m.ORD - YXU
2 stops31h 12mMultiple Airlines
Sat 17/58:00 p.m.YXU - ORD
1 stop21h 44mMultiple Airlines
Deal found 26/3C$ 665
Fri 27/69:17 a.m.TPA - YXU
2 stops24h 00mUnited Airlines
Sat 5/76:15 a.m.YXU - TPA
2 stops8h 47mUnited Airlines
Deal found 26/3C$ 665
Sat 10/56:00 a.m.SJC - YXU
3 stops24h 18mMultiple Airlines
Sat 17/56:00 a.m.YXU - SJC
2 stops20h 27mMultiple Airlines
Deal found 26/3C$ 681
Sat 10/56:00 p.m.DFW - YXU
2 stops34h 14mMultiple Airlines
Sat 17/56:00 a.m.YXU - DFW
2 stops19h 03mMultiple Airlines
Deal found 26/3C$ 726
Sat 10/54:45 p.m.LGA - YXU
1 stop4h 43mAir Canada
Sat 17/53:40 p.m.YXU - LGA
1 stop5h 11mAir Canada
Deal found 26/3C$ 771

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 27 March 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

Tue 10/6

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

1 stop8h 09m

London

Tue 17/6

6:00 a.m.-12:05 p.m.

1 stop9h 05m

C$ 420

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 10/5

12:10 a.m.-2:58 p.m.

2 stops11h 48m

London

Sun 18/5

3:35 p.m.-9:49 p.m.

1 stop9h 14m

C$ 471

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 11/5

7:30 a.m.-5:14 a.m.

1 stop18h 44m

London

Sun 18/5

3:35 p.m.-9:49 p.m.

1 stop9h 14m

C$ 479

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 22/5

6:00 a.m.-9:28 p.m.

2 stops15h 28m

London

Tue 27/5

6:15 a.m.-11:21 a.m.

1 stop5h 06m

C$ 531

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 22/5

8:25 p.m.-9:18 a.m.

1 stop12h 53m

London

Tue 27/5

6:15 a.m.-11:21 a.m.

1 stop5h 06m

C$ 549

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Fri 9/5

7:05 p.m.-2:58 p.m.

2 stops19h 53m

London

Fri 16/5

6:15 a.m.-12:27 a.m.

2 stops18h 12m

C$ 552

TampaLondon

TPA - YXU

TPAYXU

Tampa

Fri 27/6

9:17 a.m.-9:17 a.m.

2 stops24h 00m

London

Sat 5/7

6:15 a.m.-3:02 p.m.

2 stops8h 47m

C$ 665

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 10/5

9:02 p.m.-5:14 a.m.

2 stops31h 12m

London

Sat 17/5

8:00 p.m.-4:44 p.m.

1 stop21h 44m

C$ 665

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sat 10/5

6:00 a.m.-9:18 a.m.

3 stops24h 18m

London

Sat 17/5

6:00 a.m.-11:27 p.m.

2 stops20h 27m

C$ 681

DallasLondon

DFW - YXU

DFWYXU

Dallas/Fort Worth

Sat 10/5

6:00 p.m.-5:14 a.m.

2 stops34h 14m

London

Sat 17/5

6:00 a.m.-12:03 a.m.

2 stops19h 03m

C$ 726

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/3

Showing 1-10 of 42 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 27 March 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 27 March 2025.
See what other customers who have flown with United Airlines, WestJet and Air Canada from USA to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,603 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,603 reviews
United Airlines
7.4
Good
8,603 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,785 reviews
United Airlines
7.4
Good
8,603 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
8,972 reviews
United Airlines
7.4
Good
8,603 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Flair Airlines
6.0
Okay
239 reviews
United Airlines
7.4
Good
8,603 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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$ 74 is the cheapest one-way deal found within the past few days, from Flair Airlines. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from C$ 275 and C$ 315, 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 Dallas/Fort Worth - London or Washington, D.C. Dulles 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 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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How does Cheapflights help users find flights from USA to London?

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

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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.

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