Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ottawa to London from C$ 369

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 31/5. 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

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ottawa to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Transat Logo
6:55 p.m. - 10:45 a.m.
YOW
-
LGW
10h 50m
1 stop
Air Transat Logo
12:40 p.m. - 12:41 a.m.
LGW
-
YOW
17h 01m
1 stop
C$ 859Air Transat
Sat, 4 Apr - Thu, 16 Apr
Porter Airlines Logo
10:00 a.m. - 10:45 a.m.
YOW
-
LGW
19h 45m
1 stop
Porter Airlines Logo
12:40 p.m. - 12:41 a.m.
LGW
-
YOW
17h 01m
1 stop
C$ 860Porter Airlines
Tue, 7 Apr - Tue, 14 Apr
Porter Airlines Logo
7:00 a.m. - 7:55 a.m.
YOW
-
LGW
19h 55m
1 stop
Porter Airlines Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
C$ 862Porter Airlines
Mon, 1 Jun - Tue, 23 Jun
Air Transat Logo
6:35 p.m. - 10:45 a.m.
YOW
-
LGW
11h 10m
1 stop
Air Transat Logo
12:40 p.m. - 8:00 p.m.
LGW
-
YOW
12h 20m
1 stop
C$ 863Air Transat
Mon, 11 May - Fri, 15 May
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$ 864Air Transat
Sun, 31 May - Tue, 23 Jun
Air Transat Logo
6:35 p.m. - 10:45 a.m.
YOW
-
LGW
11h 10m
1 stop
Air Transat Logo
12:40 p.m. - 12:25 a.m.
LGW
-
YOW
16h 45m
1 stop
C$ 866Air Transat
Wed, 6 May - Fri, 15 May
Air Transat Logo
6:35 p.m. - 10:45 a.m.
YOW
-
LGW
11h 10m
1 stop
Air Transat Logo
12:40 p.m. - 8:05 a.m.
LGW
-
YOW
24h 25m
1 stop
C$ 867Air Transat
Wed, 6 May - Sat, 16 May
Air Transat Logo
4:00 p.m. - 10:45 a.m.
YOW
-
LGW
13h 45m
1 stop
Air Transat Logo
12:40 p.m. - 8:00 p.m.
LGW
-
YOW
12h 20m
1 stop
C$ 868Air Transat
Mon, 4 May - Thu, 7 May
Porter Airlines Logo
7:15 p.m. - 10:45 a.m.
YOW
-
LGW
10h 30m
1 stop
Porter Airlines Logo
12:40 p.m. - 8:00 p.m.
LGW
-
YOW
12h 20m
1 stop
C$ 870Porter Airlines
Sat, 2 May - Tue, 2 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$ 871Porter Airlines
Sun, 24 May - Tue, 16 Jun

Air Transat flights from Ottawa to London Gatwick Airport

Our best Air Transat deals on Ottawa to London Gatwick Airport flight tickets
Air Transat
4 Apr
YOW6:55 p.m.Ottawa
10h 50m
1 stop
LGW10:45 a.m.London Gatwick
16 Apr
LGW12:40 p.m.London Gatwick
17h 01m
1 stop
YOW12:41 a.m.Ottawa
C$ 859
Air Transat
14 May
YOW6:35 p.m.Ottawa
11h 10m
1 stop
LGW10:45 a.m.London Gatwick
25 May
LGW9:40 a.m.London Gatwick
15h 20m
1 stop
YOW8:00 p.m.Ottawa
C$ 860
Air Transat
11 May
YOW6:35 p.m.Ottawa
11h 10m
1 stop
LGW10:45 a.m.London Gatwick
15 May
LGW12:40 p.m.London Gatwick
12h 20m
1 stop
YOW8:00 p.m.Ottawa
C$ 863

TAP AIR PORTUGAL flights from Ottawa to London Gatwick Airport

Our best TAP AIR PORTUGAL deals on Ottawa to London Gatwick Airport flight tickets
TAP AIR PORTUGAL
19 Mar
YOW2:05 p.m.Ottawa
15h 45m
2 stops
LGW9:50 a.m.London Gatwick
23 Mar
LGW10:40 a.m.London Gatwick
27h 01m
2 stops
YOW9:41 a.m.Ottawa
C$ 1,987
TAP AIR PORTUGAL
27 Mar
YOW7:55 p.m.Ottawa
15h 50m
2 stops
LGW3:45 p.m.London Gatwick
30 Mar
LGW10:35 a.m.London Gatwick
28h 31m
2 stops
YOW10:06 a.m.Ottawa
C$ 2,188
TAP AIR PORTUGAL
17 Mar
YOW2:05 p.m.Ottawa
15h 45m
2 stops
LGW9:50 a.m.London Gatwick
20 Mar
LGW10:40 a.m.London Gatwick
27h 01m
2 stops
YOW9:41 a.m.Ottawa
C$ 2,280

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 15 March 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

Sat 4/4

6:55 p.m.-10:45 a.m.

1 stop10h 50m

London Gatwick

Thu 16/4

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

1 stop17h 01m

C$ 859

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 7/4

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

1 stop19h 45m

London Gatwick

Tue 14/4

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

1 stop17h 01m

C$ 860

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 1/6

7:00 a.m.-7:55 a.m.

1 stop19h 55m

London Gatwick

Tue 23/6

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

Nonstop8h 00m

C$ 862

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 11/5

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

1 stop11h 10m

London Gatwick

Fri 15/5

12:40 p.m.-8:00 p.m.

1 stop12h 20m

C$ 863
Quickest round-trip

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 31/5

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

Nonstop7h 15m

London Gatwick

Tue 23/6

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

1 stop11h 00m

C$ 864

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 6/5

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

1 stop11h 10m

London Gatwick

Fri 15/5

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

1 stop16h 45m

C$ 866

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 6/5

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

1 stop11h 10m

London Gatwick

Sat 16/5

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

1 stop24h 25m

C$ 867

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 4/5

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

1 stop13h 45m

London Gatwick

Thu 7/5

12:40 p.m.-8:00 p.m.

1 stop12h 20m

C$ 868

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 2/5

7:15 p.m.-10:45 a.m.

1 stop10h 30m

London Gatwick

Tue 2/6

12:40 p.m.-8:00 p.m.

1 stop12h 20m

C$ 870

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 24/5

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

1 stop13h 45m

London Gatwick

Tue 16/6

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

1 stop16h 45m

C$ 871

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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$ 455. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday 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$ 1,087.

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 are 2 cabin classes 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 15% 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$ 66

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$ 66. The best round-trip flight deal from Ottawa to London Gatwick Airport found on momondo in the last 72 hours is C$ 930.
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. 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$ 620Free CancellationRating
7.7
521 reviews
Search Air Transat flights
Porter AirlinesPriceFrom C$ 780Free CancellationRating
8.0
423 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
Wembley
Ilford
Slough
Gatwick
Wokingham
Crawley
Feltham
Hayes
Newport
Waterlooville
Chelmsford
Basingstoke
Milton Keynes
Dover
Guildford
Worthing
Ipswich
Maidstone
Woking

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 14/4
Tue 21/4
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom C$ 690
Flights to London City Airportfrom C$ 910
Flights to London Stansted Airportfrom C$ 718
Flights to London Luton Airportfrom C$ 746
Flights to London Southend Airportfrom C$ 863
Flights to Glasgow Intl Airportfrom C$ 668
Flights to Belfast Intl Airportfrom C$ 834
Flights to Belfast City Airportfrom C$ 834