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Cheap flights from Ottawa to London from C$ 373

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 3/6. 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 Ottawa to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:35 p.m. - 10:45 a.m.
YOW
-
LGW
11h 10m
1 stop
Multiple Airlines Logo
9:35 p.m. - 5:35 p.m.
LGW
-
YOW
25h 00m
2 stops
C$ 858Multiple Airlines
Wed, 3 Jun - Tue, 16 Jun
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Air Transat Logo
11:35 a.m. - 5:35 p.m.
LGW
-
YOW
11h 00m
1 stop
C$ 859Air Transat
Fri, 22 May - Sun, 24 May
Multiple Airlines Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Multiple Airlines Logo
9:35 p.m. - 12:20 a.m.
LGW
-
YOW
31h 45m
3 stops
C$ 861Multiple Airlines
Tue, 2 Jun - Tue, 16 Jun
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 862Air Transat
Tue, 15 Sep - Tue, 22 Sep
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 863Air Transat
Tue, 9 Jun - Fri, 26 Jun
Air Transat Logo
2:15 p.m. - 9:50 a.m.
YOW
-
LGW
14h 35m
1 stop
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 865Air Transat
Tue, 9 Jun - Fri, 26 Jun
Porter Airlines Logo
4:00 p.m. - 10:45 a.m.
YOW
-
LGW
13h 45m
1 stop
Porter Airlines Logo
12:40 p.m. - 12:25 a.m.
LGW
-
YOW
16h 45m
1 stop
C$ 866Porter Airlines
Wed, 10 Jun - Wed, 17 Jun
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 867Air Transat
Fri, 25 Sep - Fri, 2 Oct
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 869Air Transat
Fri, 28 Aug - Sun, 20 Sep
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 870Air Transat
Fri, 12 Jun - Tue, 16 Jun

Porter Airlines flights from Ottawa to London Gatwick Airport

Our best Porter Airlines deals on Ottawa to London Gatwick Airport flight tickets
Porter Airlines
10 Jun
YOW4:00 p.m.Ottawa
13h 45m
1 stop
LGW10:45 a.m.London Gatwick
17 Jun
LGW12:40 p.m.London Gatwick
16h 45m
1 stop
YOW12:25 a.m.Ottawa
C$ 866
Porter Airlines
3 Jun
YOW8:40 a.m.Ottawa
21h 05m
1 stop
LGW10:45 a.m.London Gatwick
16 Jun
LGW12:40 p.m.London Gatwick
12h 25m
1 stop
YOW8:05 p.m.Ottawa
C$ 869
Porter Airlines
1 Jun
YOW8:40 a.m.Ottawa
18h 15m
1 stop
LGW7:55 a.m.London Gatwick
4 Jun
LGW12:40 p.m.London Gatwick
12h 25m
1 stop
YOW8:05 p.m.Ottawa
C$ 876

Air Transat flights from Ottawa to London Gatwick Airport

Our best Air Transat deals on Ottawa to London Gatwick Airport flight tickets
Air Transat
21 May
YOW6:35 p.m.Ottawa
11h 10m
1 stop
LGW10:45 a.m.London Gatwick
26 May
LGW12:40 p.m.London Gatwick
16h 45m
1 stop
YOW12:25 a.m.Ottawa
C$ 852
Air Transat
6 May
YOW6:35 p.m.Ottawa
11h 10m
1 stop
LGW10:45 a.m.London Gatwick
12 May
LGW12:40 p.m.London Gatwick
24h 25m
1 stop
YOW8:05 a.m.Ottawa
C$ 856
Air Transat
26 May
YOW7:15 p.m.Ottawa
10h 30m
1 stop
LGW10:45 a.m.London Gatwick
1 Jun
LGW12:40 p.m.London Gatwick
12h 25m
1 stop
YOW8:05 p.m.Ottawa
C$ 858

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 29 April 2026.
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

Cheapest round-trip

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 3/6

6:35 p.m.-10:45 a.m.

1 stop11h 10m

London Gatwick

Tue 16/6

9:35 p.m.-5:35 p.m.

2 stops25h 00m

C$ 858

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 22/5

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Sun 24/5

11:35 a.m.-5:35 p.m.

1 stop11h 00m

C$ 859

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 2/6

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Tue 16/6

9:35 p.m.-12:20 a.m.

3 stops31h 45m

C$ 861
Quickest round-trip

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 15/9

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Tue 22/9

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 862

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 9/6

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Fri 26/6

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 863

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 9/6

2:15 p.m.-9:50 a.m.

1 stop14h 35m

London Gatwick

Fri 26/6

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 865

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 10/6

4:00 p.m.-10:45 a.m.

1 stop13h 45m

London Gatwick

Wed 17/6

12:40 p.m.-12:25 a.m.

1 stop16h 45m

C$ 866

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 25/9

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Fri 2/10

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 867

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 28/8

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Sun 20/9

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 869

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 12/6

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Tue 16/6

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 870

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 typical price of a round-trip flight between Ottawa and London Gatwick Airport?

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

If you are unable to visit London Gatwick Airport during the month of January, then departing from Ottawa during the month February is also very affordable. Most momondo users find prices during this month for around C$ 751.

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 Sunday when prices can be found for as low as C$ 775. 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$ 1,073.

What is the cheapest Ottawa to London Gatwick flight route?

Fly from Ottawa to London Gatwick for the best Ottawa - London Gatwick flight prices

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

No. A direct flight is the cheapest option for a flight between Ottawa to London Gatwick Airport.

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

Best price found

C$ 1,904

Fastest flight time

7h 15m

Direct flights

Mon, Wed and Sat
The best one-way flight to London Gatwick Airport from Ottawa in the past 72 hours is C$ 1,904. The best round-trip flight deal from Ottawa to London Gatwick Airport found on momondo in the last 72 hours is C$ 951.
The fastest flight from Ottawa to London Gatwick Airport takes 7h 15m
Direct flights go from Ottawa to London Gatwick Airport on Monday, Wednesday and Saturday. The only airline offering direct flights is Air Transat.
Search flight deals

Frequently asked questions about flying from Ottawa to London Gatwick Airport

  • 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 7h 15m, 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 plane model from Ottawa to London Gatwick Airport?

  • 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$ 668Free CancellationRating
7.8
542 reviews
Search Air Transat flights
Porter AirlinesPriceFrom C$ 952Free CancellationRating
8.0
435 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
Milton Keynes
Wembley
Slough
Gatwick
Wokingham
Crawley
Feltham
Hayes
Waterlooville
Chelmsford
Basingstoke
Dover
Worthing
Ipswich
Woking
Maidstone
Enfield
Harrow
Luton

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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