£138+ Cheap flights from London, Ontario

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
YXU — LHR
19 Jan — 26 Jan1
1 adult
1 adult, Economy, 0 bags

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Enter your travel dates to find the best prices.

Cheapest flights from London
Explore the most affordable flight options available from London. Find the lowest fares based on data from user searches, with prices last updated on 20 December 2025.

Mon 2/220:10YXU - LHR
1 stop35h 40mMultiple Airlines
Mon 9/209:00LHR - YXU
2 stops26h 35mMultiple Airlines
Deal found 19/12£461
Sun 1/220:10YXU - LHR
1 stop35h 40mMultiple Airlines
Sun 8/209:00LHR - YXU
2 stops26h 35mMultiple Airlines
Deal found 18/12£479
Mon 2/217:40YXU - LHR
2 stops45h 55mAir Canada
Mon 9/219:25LHR - YXU
2 stops26h 40mAir Canada
Deal found 19/12£508
Mon 2/205:10YXU - LGW
2 stops31h 40mMultiple Airlines
Mon 9/218:40LGW - YXU
2 stops31h 41mMultiple Airlines
Deal found 19/12£514
Sun 1/217:40YXU - LHR
1 stop31h 50mAir Canada
Sun 8/211:10LHR - YXU
1 stop10h 55mAir Canada
Deal found 18/12£525
Tue 3/209:50YXU - LHR
2 stops20h 25mUnited Airlines
Tue 10/212:05LHR - YXU
2 stops14h 16mUnited Airlines
Deal found 19/12£526
Mon 2/209:50YXU - LHR
2 stops20h 15mUnited Airlines
Mon 9/212:05LHR - YXU
2 stops14h 16mUnited Airlines
Deal found 19/12£527
Wed 6/518:10YXU - LHR
1 stop12h 40mAir Canada
Sun 24/508:30LHR - YXU
1 stop14h 03mAir Canada
Deal found 19/12£573
Mon 2/209:50YXU - EDI
2 stops21h 10mMultiple Airlines
Mon 9/207:40EDI - YXU
2 stops18h 41mMultiple Airlines
Deal found 18/12£612
Tue 7/409:25YXU - BHX
2 stops17h 15mMultiple Airlines
Wed 15/409:10BHX - YXU
2 stops17h 08mMultiple Airlines
Deal found 19/12£622
Wed 4/205:10YXU - EDI
2 stops21h 45mUnited Airlines
Sun 8/209:25EDI - YXU
2 stops16h 56mUnited Airlines
Deal found 19/12£626
Mon 12/117:40YXU - LGW
2 stops21h 00mMultiple Airlines
Mon 26/107:00LGW - YXU
2 stops28h 34mMultiple Airlines
Deal found 20/12£631

Find flights from London within your budget

 
Find flights departing from London that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 20 December 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

LondonLondon

YXU - LHR

YXULHR

London

Mon 2/2

20:10-12:50

1 stop35h 40m

London Heathrow

Mon 9/2

09:00-06:35

2 stops26h 35m

£461

LondonLondon

YXU - LHR

YXULHR

London

Sun 1/2

20:10-12:50

1 stop35h 40m

London Heathrow

Sun 8/2

09:00-06:35

2 stops26h 35m

£479

LondonLondon

YXU - LHR

YXULHR

London

Mon 2/2

17:40-20:35

2 stops45h 55m

London Heathrow

Mon 9/2

19:25-17:05

2 stops26h 40m

£508

LondonLondon

YXU - LGW

YXULGW

London

Mon 2/2

05:10-17:50

2 stops31h 40m

London Gatwick

Mon 9/2

18:40-21:21

2 stops31h 41m

£514

LondonLondon

YXU - LHR

YXULHR

London

Tue 3/2

09:50-08:30

1 stop17h 40m

London Heathrow

Tue 10/2

09:00-21:21

2 stops17h 21m

£525

LondonLondon

YXU - LHR

YXULHR

London

Sun 1/2

17:40-06:30

1 stop31h 50m

London Heathrow

Sun 8/2

11:10-17:05

1 stop10h 55m

£525

LondonLondon

YXU - LHR

YXULHR

London

Sun 22/2

17:40-10:50

2 stops12h 10m

London Heathrow

Thu 26/2

13:35-08:46

2 stops24h 11m

£526

LondonLondon

YXU - LHR

YXULHR

London

Tue 3/2

09:50-11:15

2 stops20h 25m

London Heathrow

Tue 10/2

12:05-21:21

2 stops14h 16m

£526

LondonLondon

YXU - LHR

YXULHR

London

Mon 2/2

09:50-11:05

2 stops20h 15m

London Heathrow

Mon 9/2

12:05-21:21

2 stops14h 16m

£527

LondonEdinburgh

YXU - EDI

YXUEDI

London

Mon 2/2

09:50-12:00

2 stops21h 10m

Edinburgh Turnhouse

Mon 9/2

07:40-21:21

2 stops18h 41m

£612

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 56 results
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Best time to book a flight from London

Have a flexible travel schedule? Discover the best time to fly from London with our price prediction graph.
Estimated return 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 London

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

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

Currently, March is the cheapest month in which you can book a flight from London, Ontario (average of £358). Flying from London, Ontario in July will prove the most costly (average of £497). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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Direct flights from Canada

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Related info for your journey

Access useful and relevant information related to your journey from London. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 20 December 2025.

  • What are the most popular destinations to fly to from London, Ontario?

    This month, the top selected destinations from London, Ontario are Calgary, Vancouver Intl Airport, Cancún. Throughout the year, Calgary, Vancouver Intl Airport, Cancún are some of the top choices made by users flying from London, Ontario.

  • What is the cheapest premium economy flight from London, Ontario?

    Here are some of the cheapest offers we have found for the cheapest premium economy flights from London, Ontario.
    London to Calgary from £922
    London to Toronto Pearson Intl Airport from £1,025

  • What is the cheapest month to fly from London, Ontario?

    At the present moment the cheapest month to fly from London, Ontario is currently March; with July being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • How does Cheapflights help users find flights from London?

    Cheapflights helps you search for flights from London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

    By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights from London.

  • Can Cheapflights find flights from London with no change fees?

    Need flexible booking options for your flight from London ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

    Yes, Cheapflights offers price alerts on flights from London so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

See more FAQs

Fly with Cheapflights

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

How does Cheapflights help users find flights from London?

Cheapflights helps you search for flights from London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights from London.

Can Cheapflights find flights from London with no change fees?

Need flexible booking options for your flight from London ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on flights from London so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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