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Cheap flights from Ottawa to London from C$ 413

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 19/1. 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.
Air Transat Logo
3:05 p.m. - 9:45 a.m.
YOW
-
LGW
13h 40m1 stop
Air Transat Logo
11:40 a.m. - 12:43 a.m.
LGW
-
YOW
18h 03m1 stop
C$ 769Air Transat
Fri, 16 Jan - Sat, 21 Feb
Air Transat Logo
6:55 p.m. - 9:45 a.m.
YOW
-
LGW
9h 50m1 stop
Air Transat Logo
11:40 a.m. - 6:33 p.m.
LGW
-
YOW
11h 53m1 stop
C$ 770Air Transat
Mon, 9 Feb - Fri, 20 Feb
Air Transat Logo
6:55 p.m. - 9:45 a.m.
YOW
-
LGW
9h 50m1 stop
Air Transat Logo
11:40 a.m. - 6:33 p.m.
LGW
-
YOW
11h 53m1 stop
C$ 772Air Transat
Thu, 19 Feb - Thu, 26 Feb
Air Transat Logo
3:05 p.m. - 9:45 a.m.
YOW
-
LGW
13h 40m1 stop
Air Transat Logo
11:40 a.m. - 8:25 a.m.
LGW
-
YOW
25h 45m1 stop
C$ 787Air Transat
Wed, 11 Feb - Mon, 16 Feb
Air Transat Logo
6:45 a.m. - 9:45 a.m.
YOW
-
LGW
22h 00m1 stop
Air Transat Logo
11:40 a.m. - 12:43 a.m.
LGW
-
YOW
18h 03m1 stop
C$ 794Air Transat
Sat, 24 Jan - Sat, 31 Jan
Air Transat Logo
10:00 a.m. - 9:45 a.m.
YOW
-
LGW
18h 45m1 stop
Air Transat Logo
11:40 a.m. - 8:25 a.m.
LGW
-
YOW
24h 45m1 stop
C$ 796Air Transat
Thu, 26 Feb - Mon, 9 Mar
Air Transat Logo
3:05 p.m. - 9:45 a.m.
YOW
-
LGW
13h 40m1 stop
Air Transat Logo
11:40 a.m. - 6:28 p.m.
LGW
-
YOW
11h 48m1 stop
C$ 803Air Transat
Thu, 15 Jan - Thu, 22 Jan
Air Transat Logo
3:05 p.m. - 9:45 a.m.
YOW
-
LGW
13h 40m1 stop
Air Transat Logo
11:40 a.m. - 6:26 p.m.
LGW
-
YOW
11h 46m1 stop
C$ 805Air Transat
Sun, 22 Feb - Mon, 2 Mar
Air Transat Logo
6:55 p.m. - 9:45 a.m.
YOW
-
LGW
9h 50m1 stop
Air Transat Logo
11:40 a.m. - 12:41 a.m.
LGW
-
YOW
18h 01m1 stop
C$ 806Air Transat
Sat, 21 Feb - Mon, 2 Mar
Air Transat Logo
10:00 a.m. - 9:45 a.m.
YOW
-
LGW
18h 45m1 stop
Air Transat Logo
12:40 p.m. - 8:05 a.m.
LGW
-
YOW
24h 25m1 stop
C$ 820Air Transat
Sat, 17 Jan - Thu, 30 Apr

Air Transat flights from Ottawa to London Gatwick Airport

Our best Air Transat deals on Ottawa to London Gatwick Airport flight tickets
Air Transat
16 Jan
YOW3:05 p.m.Ottawa
13h 40m
1 stop
LGW9:45 a.m.London Gatwick
21 Feb
LGW11:40 a.m.London Gatwick
18h 03m
1 stop
YOW12:43 a.m.Ottawa
C$ 769
Find similar
Air Transat
9 Feb
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
20 Feb
LGW11:40 a.m.London Gatwick
11h 53m
1 stop
YOW6:33 p.m.Ottawa
C$ 770
Find similar
Air Transat
19 Feb
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
1 Mar
LGW11:40 a.m.London Gatwick
11h 46m
1 stop
YOW6:26 p.m.Ottawa
C$ 772
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
17 Jan
YOW10:00 a.m.Ottawa
18h 45m
1 stop
LGW9:45 a.m.London Gatwick
23 Jan
LGW11:40 a.m.London Gatwick
11h 48m
1 stop
YOW6:28 p.m.Ottawa
C$ 885
Find similar
Porter Airlines
8 Apr
YOW3:05 p.m.Ottawa
14h 40m
1 stop
LGW10:45 a.m.London Gatwick
15 Apr
LGW12:40 p.m.London Gatwick
33h 11m
1 stop
YOW4:51 p.m.Ottawa
C$ 984
Find similar
Porter Airlines
18 Dec
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
8 Jan
LGW11:40 a.m.London Gatwick
11h 48m
1 stop
YOW6:28 p.m.Ottawa
C$ 2,480
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 18 December 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

Fri 16/1

3:05 p.m.-9:45 a.m.

1 stop13h 40m

London Gatwick

Sat 21/2

11:40 a.m.-12:43 a.m.

1 stop18h 03m

C$ 769

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 9/2

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

1 stop9h 50m

London Gatwick

Fri 20/2

11:40 a.m.-6:33 p.m.

1 stop11h 53m

C$ 770

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 19/2

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

1 stop9h 50m

London Gatwick

Thu 26/2

11:40 a.m.-6:33 p.m.

1 stop11h 53m

C$ 772

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 11/2

3:05 p.m.-9:45 a.m.

1 stop13h 40m

London Gatwick

Mon 16/2

11:40 a.m.-8:25 a.m.

1 stop25h 45m

C$ 787

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 24/1

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

1 stop22h 00m

London Gatwick

Sat 31/1

11:40 a.m.-12:43 a.m.

1 stop18h 03m

C$ 794

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 26/2

10:00 a.m.-9:45 a.m.

1 stop18h 45m

London Gatwick

Mon 9/3

11:40 a.m.-8:25 a.m.

1 stop24h 45m

C$ 796

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 15/1

3:05 p.m.-9:45 a.m.

1 stop13h 40m

London Gatwick

Thu 22/1

11:40 a.m.-6:28 p.m.

1 stop11h 48m

C$ 803

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 22/2

3:05 p.m.-9:45 a.m.

1 stop13h 40m

London Gatwick

Mon 2/3

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

1 stop11h 46m

C$ 805

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 21/2

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

1 stop9h 50m

London Gatwick

Mon 2/3

11:40 a.m.-12:41 a.m.

1 stop18h 01m

C$ 806

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 17/1

10:00 a.m.-9:45 a.m.

1 stop18h 45m

London Gatwick

Thu 30/4

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

1 stop24h 25m

C$ 820

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 April is also very affordable. Most momondo users find prices during this month for around C$ 989.

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 Friday when prices can be found for as low as C$ 815. 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$ 1,208.

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 evening. Flights from Ottawa to London Gatwick Airport during this time can be as low as C$ 815. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,268 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.

What is the cheapest Ottawa to London Gatwick flight route?

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

What cabin class options are available on Ottawa to London Gatwick flights?

There is only 1 cabin class available to choose from on Ottawa to London Gatwick flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 19% 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

Best price found

C$ 788

Fastest flight time

7h 15m

Direct flights

Sat
The best flight deal from Ottawa to London Gatwick Airport found on momondo in the last 72 hours is C$ 788
The fastest flight from Ottawa to London Gatwick Airport takes 7h 15m
Direct flights go from Ottawa to London Gatwick Airport on Saturday. There are no airlines offering direct flights.
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 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$ 681Free CancellationRating
7.8
483 reviews
Search Air Transat flights
Porter AirlinesPriceFrom C$ 783Free CancellationRating
8.0
399 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
Chelmsford
Wokingham
Slough
Feltham
Hayes
Uxbridge
Wembley
Waterlooville
Newport
Basingstoke
Milton Keynes
Dover
Worthing
Maidstone
Guildford

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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