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Cheap flights from Ottawa to London from C$ 329

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 7/10. 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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Find the cheapest flights from Ottawa to London

Cheap round-trip flights

Air Transat Logo
2:20 p.m. - 10:45 a.m.YOW-LGW
15h 25m1 stop
Air Transat Logo
12:40 p.m. - 12:21 a.m.LGW-YOW
16h 41m1 stop
C$ 863Air Transat
Find Deal
Sun, 28 Sep - Fri, 10 Oct
Air Transat Logo
6:55 p.m. - 9:45 a.m.YOW-LGW
9h 50m1 stop
Air Transat Logo
11:40 a.m. - 6:26 p.m.LGW-YOW
11h 46m1 stop
C$ 869Air Transat
Find Deal
Sat, 15 Nov - Tue, 18 Nov
Air Transat Logo
5:05 p.m. - 10:45 a.m.YOW-LGW
12h 40m1 stop
Air Transat Logo
12:40 p.m. - 12:21 a.m.LGW-YOW
16h 41m1 stop
C$ 870Air Transat
Find Deal
Thu, 2 Oct - Thu, 16 Oct
Air Transat Logo
10:45 a.m. - 10:45 a.m.YOW-LGW
19h 00m1 stop
Air Transat Logo
11:40 a.m. - 9:25 a.m.LGW-YOW
25h 45m1 stop
C$ 874Air Transat
Find Deal
Thu, 23 Oct - Sat, 1 Nov
Multiple Airlines Logo
4:25 p.m. - 10:10 a.m.YOW-LGW
36h 45m1 stop
Multiple Airlines Logo
10:45 a.m. - 2:46 p.m.LGW-YOW
33h 01m1 stop
C$ 886Multiple Airlines
Find Deal
Sat, 27 Sep - Fri, 10 Oct
Multiple Airlines Logo
4:25 p.m. - 10:10 a.m.YOW-LGW
36h 45m1 stop
Multiple Airlines Logo
10:45 a.m. - 2:46 p.m.LGW-YOW
33h 01m1 stop
C$ 888Multiple Airlines
Find Deal
Sat, 27 Sep - Sat, 11 Oct
Porter Airlines Logo
10:45 a.m. - 10:45 a.m.YOW-LGW
19h 00m1 stop
Porter Airlines Logo
11:40 a.m. - 4:51 p.m.LGW-YOW
33h 11m1 stop
C$ 890Porter Airlines
Find Deal
Wed, 8 Oct - Wed, 29 Oct
WestJet Logo
5:55 a.m. - 9:25 a.m.YOW-LGW
22h 30m2 stops
WestJet Logo
10:45 a.m. - 12:22 a.m.LGW-YOW
18h 37m2 stops
C$ 892WestJet
Find Deal
Fri, 10 Oct - Fri, 17 Oct
Porter Airlines Logo
2:20 p.m. - 10:45 a.m.YOW-LGW
15h 25m1 stop
Porter Airlines Logo
12:40 p.m. - 8:05 a.m.LGW-YOW
24h 25m1 stop
C$ 895Porter Airlines
Find Deal
Mon, 13 Oct - Mon, 20 Oct
WestJet Logo
5:55 a.m. - 9:25 a.m.YOW-LGW
22h 30m2 stops
WestJet Logo
10:45 a.m. - 12:22 a.m.LGW-YOW
18h 37m2 stops
C$ 959WestJet
Find Deal
Mon, 29 Sep - Wed, 15 Oct

WestJet flights from Ottawa to London Gatwick Airport

Our best WestJet deals on Ottawa to London Gatwick Airport flight tickets
WestJet
10 Oct
YOW5:55 a.m.Ottawa
22h 30m
2 stops
LGW9:25 a.m.London Gatwick
17 Oct
LGW10:45 a.m.London Gatwick
18h 37m
2 stops
YOW12:22 a.m.Ottawa
C$ 892
Find similar
WestJet
29 Sep
YOW5:55 a.m.Ottawa
22h 30m
2 stops
LGW9:25 a.m.London Gatwick
15 Oct
LGW10:45 a.m.London Gatwick
18h 37m
2 stops
YOW12:22 a.m.Ottawa
C$ 959
Find similar
WestJet
29 Sep
YOW5:55 a.m.Ottawa
22h 30m
2 stops
LGW9:25 a.m.London Gatwick
18 Oct
LGW10:45 a.m.London Gatwick
18h 37m
2 stops
YOW12:22 a.m.Ottawa
C$ 984
Find similar

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 Sep
YOW2:20 p.m.Ottawa
15h 25m
1 stop
LGW10:45 a.m.London Gatwick
10 Oct
LGW12:40 p.m.London Gatwick
16h 41m
1 stop
YOW12:21 a.m.Ottawa
C$ 863
Find similar
Air Transat
15 Nov
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
18 Nov
LGW11:40 a.m.London Gatwick
11h 46m
1 stop
YOW6:26 p.m.Ottawa
C$ 869
Find similar
Air Transat
2 Oct
YOW5:05 p.m.Ottawa
12h 40m
1 stop
LGW10:45 a.m.London Gatwick
16 Oct
LGW12:40 p.m.London Gatwick
16h 41m
1 stop
YOW12:21 a.m.Ottawa
C$ 870
Find similar

momondo Fare Finder

 
Customize 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 96,600 searches. Data last updated 16 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

2:20 p.m.-10:45 a.m.

1 stop15h 25m

London Gatwick

Fri 10/10

12:40 p.m.-12:21 a.m.

1 stop16h 41m

C$ 863

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 15/11

6:55 p.m.-9:45 a.m.

1 stop9h 50m

London Gatwick

Tue 18/11

11:40 a.m.-6:26 p.m.

1 stop11h 46m

C$ 869

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 2/10

5:05 p.m.-10:45 a.m.

1 stop12h 40m

London Gatwick

Thu 16/10

12:40 p.m.-12:21 a.m.

1 stop16h 41m

C$ 870

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 23/10

10:45 a.m.-10:45 a.m.

1 stop19h 00m

London Gatwick

Sat 1/11

11:40 a.m.-9:25 a.m.

1 stop25h 45m

C$ 874

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 27/9

4:25 p.m.-10:10 a.m.

1 stop36h 45m

London Gatwick

Fri 10/10

10:45 a.m.-2:46 p.m.

1 stop33h 01m

C$ 886

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 27/9

4:25 p.m.-10:10 a.m.

1 stop36h 45m

London Gatwick

Sat 11/10

10:45 a.m.-2:46 p.m.

1 stop33h 01m

C$ 888

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 8/10

10:45 a.m.-10:45 a.m.

1 stop19h 00m

London Gatwick

Wed 29/10

11:40 a.m.-4:51 p.m.

1 stop33h 11m

C$ 890

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 10/10

5:55 a.m.-9:25 a.m.

2 stops22h 30m

London Gatwick

Fri 17/10

10:45 a.m.-12:22 a.m.

2 stops18h 37m

C$ 892

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 13/10

2:20 p.m.-10:45 a.m.

1 stop15h 25m

London Gatwick

Mon 20/10

12:40 p.m.-8:05 a.m.

1 stop24h 25m

C$ 895

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 29/9

5:55 a.m.-9:25 a.m.

2 stops22h 30m

London Gatwick

Wed 15/10

10:45 a.m.-12:22 a.m.

2 stops18h 37m

C$ 959

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 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?

If you are unable to visit London Gatwick Airport during the month of June, then departing from Ottawa during the month March is also very affordable. Most momondo users find prices during this month for around C$ 986.

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

The cheapest day to depart on your flight to London Gatwick Airport is on a Monday when prices can be found for as low as C$ 933. This is often the case because there is less demand to fly during this day of the week. On the other hand, Wednesday is the most expensive day to depart from Ottawa because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,211.

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

Our most recent data shows that the best time of day to fly to London Gatwick Airport is in the morning. Flights from Ottawa to London Gatwick Airport during this time can be as low as C$ 982. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,271 on average. Flights to London Gatwick Airport from Ottawa at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You could potentially save up to 2% 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 round-trip 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?

    The straight-line distance from Ottawa to London Gatwick is 5370.5 km. 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 were last updated today.

  • How many operators does momondo search for flights from Ottawa Airport to London Gatwick Airport?

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

  • What is the most popular airline from Ottawa to London Gatwick Airport?

Best airlines flying from Ottawa to London Gatwick Airport

Compare and see reviews for airlines that fly from Ottawa to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
Air TransatPriceFrom C$ 795Free CancellationRating
7.7
438 reviews
Search Air Transat flights
Porter AirlinesPriceFrom C$ 909Free CancellationRating
7.9
363 reviews
Search Porter Airlines flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Ipswich
Dartford
Gatwick
Ilford
Wembley
Maidstone
Chelmsford
Wokingham
Slough
Canterbury
Feltham
Hayes
Uxbridge
Waterlooville
Newport
Basingstoke
Milton Keynes
Dover
Worthing

Why use momondo?

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

It is quick and easy to find Ottawa to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

momondo does allow users to show only those flights to London from Ottawa which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Ottawa.

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

Yes. momondo can track prices for Ottawa to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your London Gatwick Airport trip

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