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Cheap flights from Ontario to London from C$ 403

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to London departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ontario to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:45 p.m. - 7:35 p.m.
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14h 50m
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4:55 p.m. - 5:10 p.m.
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29h 15m
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C$ 802Multiple Airlines
Thu, 3 Sep - Mon, 14 Sep
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11:45 p.m. - 7:40 p.m.
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14h 55m
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4:50 p.m. - 5:10 p.m.
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29h 20m
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C$ 811Multiple Airlines
Tue, 1 Sep - Wed, 30 Sep
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11:45 p.m. - 4:40 p.m.
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11h 55m
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1:55 p.m. - 5:10 p.m.
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32h 15m
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C$ 814Multiple Airlines
Wed, 2 Sep - Thu, 10 Sep
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11:45 p.m. - 7:35 p.m.
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14h 50m
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4:55 p.m. - 5:10 p.m.
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C$ 817Multiple Airlines
Thu, 3 Sep - Mon, 14 Sep
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11:45 p.m. - 7:40 p.m.
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4:55 p.m. - 5:10 p.m.
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C$ 820Multiple Airlines
Tue, 1 Sep - Mon, 7 Sep
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11:45 p.m. - 7:35 p.m.
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4:55 p.m. - 5:10 p.m.
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C$ 824Multiple Airlines
Thu, 3 Sep - Sun, 13 Sep
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11:45 p.m. - 7:35 p.m.
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4:50 p.m. - 5:10 p.m.
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29h 20m
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C$ 825Multiple Airlines
Thu, 10 Sep - Wed, 30 Sep
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11:45 p.m. - 7:35 p.m.
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4:55 p.m. - 5:10 p.m.
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C$ 829Multiple Airlines
Sun, 27 Sep - Fri, 9 Oct
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11:45 p.m. - 7:35 p.m.
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4:50 p.m. - 5:10 p.m.
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C$ 831Multiple Airlines
Thu, 24 Sep - Wed, 30 Sep
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11:45 p.m. - 7:35 p.m.
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4:55 p.m. - 5:10 p.m.
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29h 15m
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C$ 836Multiple Airlines
Sun, 6 Sep - Sun, 13 Sep

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to London Southend Airport 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 20 May 2026.
Use the filters below to find and compare flights from Ontario to London Southend Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Thu 3/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Mon 14/9

4:55 p.m.-5:10 p.m.

1 stop29h 15m

C$ 802

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Tue 1/9

11:45 p.m.-7:40 p.m.

1 stop14h 55m

London Southend

Wed 30/9

4:50 p.m.-5:10 p.m.

1 stop29h 20m

C$ 811

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Wed 2/9

11:45 p.m.-4:40 p.m.

1 stop11h 55m

London Southend

Thu 10/9

1:55 p.m.-5:10 p.m.

1 stop32h 15m

C$ 814

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Thu 3/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Mon 14/9

4:55 p.m.-5:10 p.m.

1 stop29h 15m

C$ 817

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Tue 1/9

11:45 p.m.-7:40 p.m.

1 stop14h 55m

London Southend

Mon 7/9

4:55 p.m.-5:10 p.m.

1 stop29h 15m

C$ 820

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Thu 3/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Sun 13/9

4:55 p.m.-5:10 p.m.

1 stop29h 15m

C$ 824

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Thu 10/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Wed 30/9

4:50 p.m.-5:10 p.m.

1 stop29h 20m

C$ 825

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Sun 27/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Fri 9/10

4:55 p.m.-5:10 p.m.

1 stop29h 15m

C$ 829

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Thu 24/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Wed 30/9

4:50 p.m.-5:10 p.m.

1 stop29h 20m

C$ 831

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Sun 6/9

11:45 p.m.-7:35 p.m.

1 stop14h 50m

London Southend

Sun 13/9

4:55 p.m.-5:10 p.m.

1 stop29h 15m

C$ 836

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 London from

How to get the cheapest flight ticket from Region of Ontario to London Southend Airport

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

How long does it take to fly to London Southend Airport?

The average flight duration from Region of Ontario to London Southend Airport depends on which airport you fly into and out of. Flying from Ottawa to London Heathrow Airport is 6h 30m on average, while flying from Toronto to London Heathrow Airport is 8h 20m on average. London Heathrow Airport is the most popular airport in London Southend Airport.

Cheap Region of Ontario to London Southend Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to London Southend Airport

Fastest flight time

10h 55m

Direct flights

None
The fastest flight from Region of Ontario to London Southend Airport takes 10h 55m
There are no direct flights from Region of Ontario to London Southend Airport. There are no popular flight routes from Region of Ontario to London Southend Airport.
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Frequently asked questions about flying from Ontario to London Southend Airport

  • When did momondo last update prices for flights from Ontario to London Southend Airport?

    Prices for flights from Ontario to London Southend Airport are updated daily.

  • How old do you have to be to fly from Ontario to London Southend Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to London Southend Airport.

  • What documentation or ID do you need to fly to London Southend Airport?

    The travel and health documents you'll need for your trip to London Southend Airport 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 London Southend Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Slough
Gatwick
Wokingham
Crawley
Feltham
Hayes
Waterlooville
Chelmsford
Basingstoke
Dover
Worthing
Woking
Ipswich
Enfield
Maidstone
Harrow
Luton

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to London?

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 Ontario to London for you.

Can I find flights from Ontario to London with flexible booking policies on momondo?

Flights from Ontario to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to London?

Once all potential Ontario to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Ontario and alert you when they change.

An easier way to manage your London Southend Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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