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Cheap flights from Ottawa to London from £174

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to London departing on 19/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

Air Transat Logo
14:20 - 10:45YOW-LGW
15h 25m1 stop
Air Transat Logo
12:40 - 00:21LGW-YOW
16h 41m1 stop
£458Air Transat
Find Deal
Sun, 28 Sep - Fri, 10 Oct
WestJet Logo
05:55 - 09:25YOW-LGW
22h 30m2 stops
WestJet Logo
10:45 - 00:22LGW-YOW
18h 37m2 stops
£460WestJet
Find Deal
Mon, 29 Sep - Wed, 8 Oct
Air Transat Logo
18:55 - 09:45YOW-LGW
9h 50m1 stop
Air Transat Logo
11:40 - 18:26LGW-YOW
11h 46m1 stop
£461Air Transat
Find Deal
Sat, 15 Nov - Tue, 18 Nov
Air Transat Logo
15:05 - 09:45YOW-LGW
13h 40m1 stop
Air Transat Logo
11:40 - 00:41LGW-YOW
18h 01m1 stop
£462Air Transat
Find Deal
Wed, 5 Nov - Tue, 11 Nov
Porter Airlines Logo
18:55 - 09:45YOW-LGW
9h 50m1 stop
Porter Airlines Logo
11:40 - 00:41LGW-YOW
18h 01m1 stop
£463Porter Airlines
Find Deal
Tue, 4 Nov - Tue, 11 Nov
Air Transat Logo
10:45 - 10:45YOW-LGW
19h 00m1 stop
Air Transat Logo
11:40 - 09:25LGW-YOW
25h 45m1 stop
£464Air Transat
Find Deal
Thu, 23 Oct - Sat, 1 Nov
Air Transat Logo
17:05 - 10:45YOW-LGW
12h 40m1 stop
Air Transat Logo
12:40 - 21:00LGW-YOW
13h 20m1 stop
£465Air Transat
Find Deal
Thu, 2 Oct - Thu, 16 Oct
Multiple Airlines Logo
16:25 - 10:10YOW-LGW
36h 45m1 stop
Multiple Airlines Logo
10:45 - 14:46LGW-YOW
33h 01m1 stop
£470Multiple Airlines
Find Deal
Sat, 27 Sep - Fri, 10 Oct
Multiple Airlines Logo
16:25 - 10:10YOW-LGW
36h 45m1 stop
Multiple Airlines Logo
10:45 - 14:46LGW-YOW
33h 01m1 stop
£471Multiple Airlines
Find Deal
Sat, 27 Sep - Sat, 11 Oct
Porter Airlines Logo
10:45 - 10:45YOW-LGW
19h 00m1 stop
Porter Airlines Logo
11:40 - 16:51LGW-YOW
33h 11m1 stop
£472Porter Airlines
Find Deal
Wed, 8 Oct - Wed, 29 Oct

Air Transat flights from Ottawa to London Gatwick Airport

Our best Air Transat deals on Ottawa to London Gatwick Airport flight tickets
Air Transat
28 Sept
YOW14:20Ottawa
15h 25m
1 stop
LGW10:45London Gatwick
10 Oct
LGW12:40London Gatwick
16h 41m
1 stop
YOW00:21Ottawa
£458
Find similar
Air Transat
15 Nov
YOW18:55Ottawa
9h 50m
1 stop
LGW09:45London Gatwick
18 Nov
LGW11:40London Gatwick
11h 46m
1 stop
YOW18:26Ottawa
£461
Find similar
Air Transat
5 Nov
YOW15:05Ottawa
13h 40m
1 stop
LGW09:45London Gatwick
11 Nov
LGW11:40London Gatwick
18h 01m
1 stop
YOW00:41Ottawa
£462
Find similar

Porter Airlines flights from Ottawa to London Gatwick Airport

Our best Porter Airlines deals on Ottawa to London Gatwick Airport flight tickets
Porter Airlines
4 Nov
YOW18:55Ottawa
9h 50m
1 stop
LGW09:45London Gatwick
11 Nov
LGW11:40London Gatwick
18h 01m
1 stop
YOW00:41Ottawa
£463
Find similar
Porter Airlines
8 Oct
YOW10:45Ottawa
19h 00m
1 stop
LGW10:45London Gatwick
29 Oct
LGW11:40London Gatwick
33h 11m
1 stop
YOW16:51Ottawa
£472
Find similar
Porter Airlines
13 Oct
YOW14:20Ottawa
15h 25m
1 stop
LGW10:45London Gatwick
20 Oct
LGW12:40London Gatwick
24h 25m
1 stop
YOW08:05Ottawa
£475
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ottawa to London Gatwick 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 279,928 searches. Data last updated 17 September 2025.
Use the filters below to find and compare flights from Ottawa to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 28/9

14:20-10:45

1 stop15h 25m

London Gatwick

Fri 10/10

12:40-00:21

1 stop16h 41m

£458

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 29/9

05:55-09:25

2 stops22h 30m

London Gatwick

Wed 8/10

10:45-00:22

2 stops18h 37m

£460

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 15/11

18:55-09:45

1 stop9h 50m

London Gatwick

Tue 18/11

11:40-18:26

1 stop11h 46m

£461

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 5/11

15:05-09:45

1 stop13h 40m

London Gatwick

Tue 11/11

11:40-00:41

1 stop18h 01m

£462

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 4/11

18:55-09:45

1 stop9h 50m

London Gatwick

Tue 11/11

11:40-00:41

1 stop18h 01m

£463

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 23/10

10:45-10:45

1 stop19h 00m

London Gatwick

Sat 1/11

11:40-09:25

1 stop25h 45m

£464

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 2/10

17:05-10:45

1 stop12h 40m

London Gatwick

Thu 16/10

12:40-21:00

1 stop13h 20m

£465

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 27/9

16:25-10:10

1 stop36h 45m

London Gatwick

Fri 10/10

10:45-14:46

1 stop33h 01m

£470

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 27/9

16:25-10:10

1 stop36h 45m

London Gatwick

Sat 11/10

10:45-14:46

1 stop33h 01m

£471

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 8/10

10:45-10:45

1 stop19h 00m

London Gatwick

Wed 29/10

11:40-16:51

1 stop33h 11m

£472

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ottawa to London Gatwick 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

What is the cheapest month to fly to London Gatwick Airport?

The cheapest month to fly to London Gatwick Airport from Ottawa is in June. Flight prices, which tend to average around £485, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in June, then you should wait until March to fly from Ottawa, when ticket prices are also cheap, with an average price of £524.

What is the cheapest day to depart on your flight to London Gatwick Airport?

According to our data, Tuesday is the cheapest day to fly to London Gatwick Airport from Ottawa. The lowest ticket price found for a Tuesday departure recently was £534. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Ottawa to London Gatwick Airport on a Friday will generally be more expensive and average around £565. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to London Gatwick Airport?

Our data shows that the cheapest Ottawa to London Gatwick Airport flights are usually those with departure times in the evening. Our users have found flights to London Gatwick Airport in the evening for as low as £531. In contrast, the most expensive time of day to depart to London Gatwick Airport is at midday when prices are around £1,147.

Can stopping save me money on Ottawa to London Gatwick Airport flights?

You could potentially save up to 66% on your flight if you consider stops on a Ottawa to London Gatwick Airport flight.

When to book flights from Ottawa to London Gatwick Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to London Gatwick Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Ottawa to London Gatwick Airport (YOW to LGW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to London Gatwick Airport

Direct flights

None
There are no direct flights from Ottawa to London Gatwick Airport. There are no popular flight routes from Ottawa to London Gatwick Airport.
Search flight deals

  • How far is Ottawa to London Gatwick by plane?

    There are 3337.1 mi between Ottawa and London Gatwick. Flights usually cover this in 9h 50m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ottawa Airport to London Gatwick Airport?

    Prices for flights from Ottawa Airport to London Gatwick Airport are updated daily.

  • How old do you have to be to fly from Ottawa Airport to London Gatwick Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ottawa Airport to London Gatwick Airport.

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

    The travel and health documents you'll need for your trip to London Gatwick 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 Gatwick 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
Eastbourne
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Chelmsford
Dover
Hayes
Dartford
Winchester
Hounslow
Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa 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 Ottawa to London for you.

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

Yes. momondo enables you to select and highlight flights to London from Ottawa with this policy.

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

momondo helps you find the best flight between Ottawa and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ottawa 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 Ottawa and alert you when they change.

An easier way to manage your London Gatwick Airport trip

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