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Cheap flights from Ontario to London from C$ 385

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 18/10. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:45 p.m. - 11:05 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STN London Stansted
19h 20m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
7:05 p.m. - 9:10 p.m.STN  London Stansted-YUL Montreal Pierre Elliott Trudeau Intl
31h 05m2 stops Barcelona-El Prat Lisbon Humberto Delgado
C$ 729Multiple Airlines
Sun, 27 Sep - Sat, 3 Oct
Multiple Airlines Logo
6:50 p.m. - 6:40 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STN London Stansted
18h 50m1 stop Madrid Barajas
Multiple Airlines Logo
6:20 a.m. - 3:40 p.m.STN  London Stansted-YUL Montreal Pierre Elliott Trudeau Intl
14h 20m1 stop Madrid Barajas
C$ 748Multiple Airlines
Wed, 4 Nov - Thu, 12 Nov
Multiple Airlines Logo
10:45 p.m. - 8:20 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STN London Stansted
16h 35m2 stops Lisbon Humberto Delgado Madrid Barajas
Multiple Airlines Logo
5:40 p.m. - 9:10 p.m.STN  London Stansted-YUL Montreal Pierre Elliott Trudeau Intl
32h 30m2 stops Madrid Barajas Lisbon Humberto Delgado
C$ 752Multiple Airlines
Wed, 23 Sep - Sat, 10 Oct
Multiple Airlines Logo
10:45 p.m. - 9:30 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STN London Stansted
17h 45m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
3:10 p.m. - 8:45 p.m.STN  London Stansted-YUL Montreal Pierre Elliott Trudeau Intl
34h 35m2 stops Barcelona-El Prat Lisbon Humberto Delgado
C$ 752Multiple Airlines
Wed, 7 Oct - Tue, 13 Oct
Multiple Airlines Logo
9:35 p.m. - 12:55 p.m.YYZ  Toronto Pearson Intl-STN London Stansted
10h 20m1 stop Dublin
Multiple Airlines Logo
10:00 p.m. - 5:10 p.m.STN  London Stansted-YYZ Toronto Pearson Intl
24h 10m2 stops Dublin St John's
C$ 752Multiple Airlines
Sat, 19 Sep - Wed, 30 Sep
Multiple Airlines Logo
11:55 p.m. - 2:30 p.m.YYZ  Toronto Pearson Intl-STN London Stansted
9h 35m1 stop Dublin
Multiple Airlines Logo
6:30 a.m. - 3:50 p.m.STN  London Stansted-YYZ Toronto Pearson Intl
14h 20m1 stop Dublin
C$ 752Multiple Airlines
Sat, 3 Oct - Wed, 7 Oct
Multiple Airlines Logo
11:55 p.m. - 7:35 p.m.YYZ  Toronto Pearson Intl-STN London Stansted
14h 40m1 stop Dublin
Multiple Airlines Logo
8:30 a.m. - 3:50 p.m.STN  London Stansted-YYZ Toronto Pearson Intl
12h 20m1 stop Dublin
C$ 754Multiple Airlines
Tue, 6 Oct - Sat, 10 Oct
Multiple Airlines Logo
10:15 p.m. - 3:15 p.m.YYZ  Toronto Pearson Intl-STN London Stansted
12h 00m1 stop Edinburgh Turnhouse
Multiple Airlines Logo
6:05 a.m. - 1:40 p.m.STN  London Stansted-YYZ Toronto Pearson Intl
12h 35m1 stop Glasgow Intl
C$ 754Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug
Multiple Airlines Logo
11:55 p.m. - 10:20 p.m.YYZ  Toronto Pearson Intl-STN London Stansted
17h 25m1 stop Dublin
Multiple Airlines Logo
6:30 a.m. - 3:50 p.m.STN  London Stansted-YYZ Toronto Pearson Intl
14h 20m1 stop Dublin
C$ 754Multiple Airlines
Sun, 13 Sep - Wed, 30 Sep
Multiple Airlines Logo
5:00 p.m. - 11:50 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STN London Stansted
25h 50m2 stops Toronto Pearson Intl Porto
Multiple Airlines Logo
9:15 p.m. - 10:40 a.m.STN  London Stansted-YUL Montreal Pierre Elliott Trudeau Intl
18h 25m1 stop Porto
C$ 755Multiple Airlines
Wed, 7 Oct - Tue, 13 Oct

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Lufthansa flights from Region of Ontario to London Stansted Airport

Our best Lufthansa deals on Region of Ontario to London Stansted Airport flight tickets
Lufthansa
17 Sep
YXU6:20 p.m.London
16h 40m
2 stops
STN4:00 p.m.London Stansted
24 Sep
STN4:25 p.m.London Stansted
34h 15m
2 stops
YXU9:40 p.m.London
C$ 1,648
Lufthansa
17 Sep
YXU6:20 p.m.London
16h 40m
2 stops
STN4:00 p.m.London Stansted
24 Sep
STN4:25 p.m.London Stansted
34h 15m
2 stops
YXU9:40 p.m.London
C$ 1,653

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to London Stansted 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 9 August 2026.
Use the filters below to find and compare flights from Ontario to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - STN London Stansted

YULSTN

Montreal Pierre Elliott Trudeau Intl

Sun 27/9

10:45 p.m.-11:05 p.m.

2 stops19h 20m

London Stansted

Sat 3/10

7:05 p.m.-9:10 p.m.

2 stops31h 05m

C$ 729

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - STN London Stansted

YULSTN

Montreal Pierre Elliott Trudeau Intl

Wed 4/11

6:50 p.m.-6:40 p.m.

1 stop18h 50m

London Stansted

Thu 12/11

6:20 a.m.-3:40 p.m.

1 stop14h 20m

C$ 748

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - STN London Stansted

YULSTN

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

10:45 p.m.-8:20 p.m.

2 stops16h 35m

London Stansted

Sat 10/10

5:40 p.m.-9:10 p.m.

2 stops32h 30m

C$ 752

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - STN London Stansted

YULSTN

Montreal Pierre Elliott Trudeau Intl

Wed 7/10

10:45 p.m.-9:30 p.m.

2 stops17h 45m

London Stansted

Tue 13/10

3:10 p.m.-8:45 p.m.

2 stops34h 35m

C$ 752

TorontoLondon

YYZ Toronto Pearson Intl - STN London Stansted

YYZSTN

Toronto Pearson Intl

Sat 19/9

9:35 p.m.-12:55 p.m.

1 stop10h 20m

London Stansted

Wed 30/9

10:00 p.m.-5:10 p.m.

2 stops24h 10m

C$ 752
Quickest round-trip

TorontoLondon

YYZ Toronto Pearson Intl - STN London Stansted

YYZSTN

Toronto Pearson Intl

Sat 3/10

11:55 p.m.-2:30 p.m.

1 stop9h 35m

London Stansted

Wed 7/10

6:30 a.m.-3:50 p.m.

1 stop14h 20m

C$ 752

TorontoLondon

YYZ Toronto Pearson Intl - STN London Stansted

YYZSTN

Toronto Pearson Intl

Tue 6/10

11:55 p.m.-7:35 p.m.

1 stop14h 40m

London Stansted

Sat 10/10

8:30 a.m.-3:50 p.m.

1 stop12h 20m

C$ 754

TorontoLondon

YYZ Toronto Pearson Intl - STN London Stansted

YYZSTN

Toronto Pearson Intl

Mon 24/8

10:15 p.m.-3:15 p.m.

1 stop12h 00m

London Stansted

Mon 31/8

6:05 a.m.-1:40 p.m.

1 stop12h 35m

C$ 754

TorontoLondon

YYZ Toronto Pearson Intl - STN London Stansted

YYZSTN

Toronto Pearson Intl

Sun 13/9

11:55 p.m.-10:20 p.m.

1 stop17h 25m

London Stansted

Wed 30/9

6:30 a.m.-3:50 p.m.

1 stop14h 20m

C$ 754

MontrealLondon

YUL Montreal Pierre Elliott Trudeau Intl - STN London Stansted

YULSTN

Montreal Pierre Elliott Trudeau Intl

Wed 7/10

5:00 p.m.-11:50 p.m.

2 stops25h 50m

London Stansted

Tue 13/10

9:15 p.m.-10:40 a.m.

1 stop18h 25m

C$ 755

Flights are sorted by cheapest round-trip flights first.

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

On average, it takes 6h 35m to fly from Region of Ontario to London Stansted Airport if you fly out of Ottawa (the most popular airport in Region of Ontario) and into London Heathrow Airport (the most popular airport in London Stansted Airport). If you’re flying out of Toronto and into London Heathrow Airport, then the flight time is around 8h.

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

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

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from Region of Ontario to London Stansted Airport takes 10h 10m
There are no direct flights from Region of Ontario to London Stansted Airport. There are no popular flight routes from Region of Ontario to London Stansted Airport.
Search flight deals

Frequently asked questions about flying from Ontario to London Stansted Airport

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

    Prices for flights from Ontario to London Stansted Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Ontario to London Stansted 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 Stansted Airport.

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

    The travel and health documents you'll need for your trip to London Stansted 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 Stansted 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
Gatwick
Wembley
Staines-upon-Thames
Slough
Banbury
Ramsgate
Watford
Wokingham
Dartford
Feltham
Hayes
Crawley
Croydon
Chelmsford
Waterlooville
Richmond
Basingstoke
Woking

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Ontario.

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

All flight searches from Ontario to London on momondo can be filtered to show those which offer flexible booking policies.

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.

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