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Cheap flights from Ontario to London from C$ 440

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 29/4. 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. - 7:55 a.m.
YUL
-
SEN
27h 10m
1 stop
Multiple Airlines Logo
8:20 p.m. - 5:20 p.m.
SEN
-
YUL
26h 00m
1 stop
C$ 800Multiple Airlines
Mon, 11 May - Mon, 18 May
Multiple Airlines Logo
10:40 p.m. - 9:00 p.m.
YUL
-
SEN
18h 20m
1 stop
Multiple Airlines Logo
7:10 a.m. - 8:40 p.m.
SEN
-
YUL
17h 30m
1 stop
C$ 836Multiple Airlines
Wed, 11 Mar - Wed, 18 Mar
Multiple Airlines Logo
11:45 p.m. - 4:40 p.m.
YYZ
-
SEN
11h 55m
1 stop
Multiple Airlines Logo
4:50 p.m. - 5:10 p.m.
SEN
-
YYZ
29h 20m
1 stop
C$ 848Multiple Airlines
Wed, 15 Apr - Wed, 22 Apr
Multiple Airlines Logo
6:00 p.m. - 10:30 a.m.
YUL
-
SEN
12h 30m
1 stop
Multiple Airlines Logo
6:05 p.m. - 7:20 p.m.
SEN
-
YUL
29h 15m
2 stops
C$ 863Multiple Airlines
Sun, 8 Mar - Sun, 15 Mar
Multiple Airlines Logo
8:25 p.m. - 1:00 p.m.
YUL
-
SEN
11h 35m
1 stop
Multiple Airlines Logo
11:20 a.m. - 11:35 a.m.
SEN
-
YUL
29h 15m
1 stop
C$ 864Multiple Airlines
Wed, 15 Apr - Fri, 1 May
Multiple Airlines Logo
9:10 p.m. - 9:00 p.m.
YUL
-
SEN
19h 50m
1 stop
Multiple Airlines Logo
10:00 a.m. - 1:10 p.m.
SEN
-
YUL
31h 10m
1 stop
C$ 868Multiple Airlines
Wed, 18 Mar - Fri, 27 Mar
Multiple Airlines Logo
6:50 p.m. - 10:25 a.m.
YUL
-
SEN
10h 35m
1 stop
Multiple Airlines Logo
11:20 a.m. - 11:35 a.m.
SEN
-
YUL
29h 15m
1 stop
C$ 871Multiple Airlines
Sat, 9 May - Fri, 15 May
Multiple Airlines Logo
9:30 p.m. - 10:25 a.m.
YUL
-
SEN
31h 55m
1 stop
Multiple Airlines Logo
10:10 a.m. - 2:00 p.m.
SEN
-
YUL
32h 50m
1 stop
C$ 879Multiple Airlines
Fri, 1 May - Thu, 7 May
Multiple Airlines Logo
6:35 p.m. - 11:20 a.m.
YUL
-
SEN
11h 45m
1 stop
Multiple Airlines Logo
8:25 a.m. - 11:21 p.m.
SEN
-
YUL
19h 56m
2 stops
C$ 886Multiple Airlines
Mon, 30 Mar - Wed, 8 Apr
Multiple Airlines Logo
11:45 p.m. - 4:40 p.m.
YYZ
-
SEN
11h 55m
1 stop
Multiple Airlines Logo
4:50 p.m. - 5:10 p.m.
SEN
-
YYZ
29h 20m
1 stop
C$ 887Multiple Airlines
Wed, 20 May - Wed, 3 Jun

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 13 February 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

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Mon 11/5

11:45 p.m.-7:55 a.m.

1 stop27h 10m

London Southend

Mon 18/5

8:20 p.m.-5:20 p.m.

1 stop26h 00m

C$ 800

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Wed 11/3

10:40 p.m.-9:00 p.m.

1 stop18h 20m

London Southend

Wed 18/3

7:10 a.m.-8:40 p.m.

1 stop17h 30m

C$ 836

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Wed 15/4

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

1 stop11h 55m

London Southend

Wed 22/4

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

1 stop29h 20m

C$ 848

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Sun 8/3

6:00 p.m.-10:30 a.m.

1 stop12h 30m

London Southend

Sun 15/3

6:05 p.m.-7:20 p.m.

2 stops29h 15m

C$ 863

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Wed 15/4

8:25 p.m.-1:00 p.m.

1 stop11h 35m

London Southend

Fri 1/5

11:20 a.m.-11:35 a.m.

1 stop29h 15m

C$ 864

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Wed 18/3

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

1 stop19h 50m

London Southend

Fri 27/3

10:00 a.m.-1:10 p.m.

1 stop31h 10m

C$ 868

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Sat 9/5

6:50 p.m.-10:25 a.m.

1 stop10h 35m

London Southend

Fri 15/5

11:20 a.m.-11:35 a.m.

1 stop29h 15m

C$ 871

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

9:30 p.m.-10:25 a.m.

1 stop31h 55m

London Southend

Thu 7/5

10:10 a.m.-2:00 p.m.

1 stop32h 50m

C$ 879

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Mon 30/3

6:35 p.m.-11:20 a.m.

1 stop11h 45m

London Southend

Wed 8/4

8:25 a.m.-11:21 p.m.

2 stops19h 56m

C$ 886

TorontoLondon

YYZ - SEN

YYZSEN

Toronto Pearson Intl

Wed 20/5

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

1 stop11h 55m

London Southend

Wed 3/6

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

1 stop29h 20m

C$ 887

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 25m 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 25m

Direct flights

None
The fastest flight from Region of Ontario to London Southend Airport takes 10h 25m
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.
Search flight deals

  • 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
Wembley
Ilford
Gatwick
Wokingham
Slough
Feltham
Hayes
Richmond
Uxbridge
Waterlooville
Newport
Chelmsford
Basingstoke
Milton Keynes
Dover
Worthing
Guildford
Ipswich
Maidstone

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.
Start using Trips
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