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Cheap flights from the United Kingdom to Ottawa from £251

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Ottawa departing on 22/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from the United Kingdom to Ottawa

Recent return flight deals from the United Kingdom to Ottawa

Multiple Airlines Logo
17:50 - 00:22LHR-YOW
11h 32m1 stop
Multiple Airlines Logo
17:20 - 08:00YOW-LHR
9h 40m1 stop
£417Multiple Airlines
Find Deal
Sat, 4 Oct - Wed, 10 Dec
KLM Logo
17:50 - 00:22LHR-YOW
11h 32m1 stop
KLM Logo
17:20 - 10:45YOW-LHR
12h 25m2 stops
£424KLM
Find Deal
Tue, 30 Sep - Thu, 27 Nov
Air France Logo
17:50 - 00:22LHR-YOW
11h 32m1 stop
Air France Logo
17:15 - 16:35YOW-LHR
18h 20m1 stop
£424Air France
Find Deal
Tue, 14 Oct - Tue, 21 Oct
Air Canada Logo
18:00 - 01:38LHR-YOW
12h 38m1 stop
Air Canada Logo
18:20 - 09:00YOW-LHR
10h 40m1 stop
£441Air Canada
Find Deal
Sat, 7 Mar - Sat, 28 Mar
Air Canada Logo
18:00 - 01:38LHR-YOW
12h 38m1 stop
Air Canada Logo
05:45 - 20:35YOW-LHR
10h 50m2 stops
£446Air Canada
Find Deal
Sat, 7 Mar - Sat, 28 Mar
Air France Logo
09:00 - 15:10LHR-YOW
11h 10m1 stop
Air France Logo
17:20 - 13:45YOW-LHR
15h 25m1 stop
£458Air France
Find Deal
Thu, 25 Dec - Tue, 6 Jan
Air Transat Logo
11:40 - 18:26LGW-YOW
11h 46m1 stop
Air Transat Logo
06:45 - 09:45YOW-LGW
22h 00m1 stop
£488Air Transat
Find Deal
Thu, 25 Dec - Tue, 6 Jan
Air Transat Logo
11:40 - 14:56LGW-YOW
32h 16m1 stop
Air Transat Logo
06:45 - 09:45YOW-LGW
22h 00m1 stop
£489Air Transat
Find Deal
Wed, 24 Dec - Tue, 6 Jan
Lufthansa Logo
09:40 - 23:08LCY-YOW
18h 28m2 stops
Lufthansa Logo
18:20 - 17:40YOW-LCY
42h 20m2 stops
£533Lufthansa
Find Deal
Thu, 20 Nov - Sun, 23 Nov
Lufthansa Logo
09:50 - 17:18LCY-YOW
35h 28m2 stops
Lufthansa Logo
18:20 - 09:15YOW-LCY
34h 55m2 stops
£622Lufthansa
Find Deal
Wed, 11 Mar - Sun, 15 Mar

Air Transat flights from United Kingdom to Ottawa

Our best Air Transat deals on United Kingdom to Ottawa flight tickets
Air Transat
25 Dec
LGW11:40London Gatwick
11h 46m
1 stop
YOW18:26Ottawa
6 Jan
YOW06:45Ottawa
22h 00m
1 stop
LGW09:45London Gatwick
£488
Find similar
Air Transat
24 Dec
LGW11:40London Gatwick
32h 16m
1 stop
YOW14:56Ottawa
6 Jan
YOW06:45Ottawa
22h 00m
1 stop
LGW09:45London Gatwick
£489
Find similar
Air Transat
1 Oct
LGW12:40London Gatwick
13h 20m
1 stop
YOW21:00Ottawa
7 Oct
YOW07:00Ottawa
22h 45m
1 stop
LGW10:45London Gatwick
£500
Find similar

United Airlines flights from United Kingdom to Ottawa

Our best United Airlines deals on United Kingdom to Ottawa flight tickets
United Airlines
9 Jan
LHR08:30London Heathrow
17h 48m
2 stops
YOW21:18Ottawa
17 Jan
YOW06:00Ottawa
19h 20m
2 stops
LHR06:20London Heathrow
£508
Find similar
United Airlines
8 Jan
LHR06:50London Heathrow
14h 40m
2 stops
YOW16:30Ottawa
17 Jan
YOW06:00Ottawa
19h 20m
2 stops
LHR06:20London Heathrow
£509
Find similar
United Airlines
19 Sept
LHR07:45London Heathrow
13h 58m
2 stops
YOW16:43Ottawa
27 Sept
YOW11:55Ottawa
17h 15m
2 stops
LHR10:10London Heathrow
£511
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Ottawa 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 18 September 2025.
Use the filters below to find and compare flights from the United Kingdom to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 4/10

17:50-00:22

1 stop11h 32m

Ottawa

Wed 10/12

17:20-08:00

1 stop9h 40m

£417

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 30/9

17:50-00:22

1 stop11h 32m

Ottawa

Thu 27/11

17:20-10:45

2 stops12h 25m

£424

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 14/10

17:50-00:22

1 stop11h 32m

Ottawa

Tue 21/10

17:15-16:35

1 stop18h 20m

£424

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 7/3

18:00-01:38

1 stop12h 38m

Ottawa

Sat 28/3

18:20-09:00

1 stop10h 40m

£441

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 7/3

18:00-01:38

1 stop12h 38m

Ottawa

Sat 28/3

05:45-20:35

2 stops10h 50m

£446

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 25/12

09:00-15:10

1 stop11h 10m

Ottawa

Tue 6/1

17:20-13:45

1 stop15h 25m

£458

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Thu 25/12

11:40-18:26

1 stop11h 46m

Ottawa

Tue 6/1

06:45-09:45

1 stop22h 00m

£488

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 24/12

11:40-14:56

1 stop32h 16m

Ottawa

Tue 6/1

06:45-09:45

1 stop22h 00m

£489

LondonOttawa

LCY - YOW

LCYYOW

London City

Thu 20/11

09:40-23:08

2 stops18h 28m

Ottawa

Sun 23/11

18:20-17:40

2 stops42h 20m

£533

LondonOttawa

LCY - YOW

LCYYOW

London City

Wed 11/3

09:50-17:18

2 stops35h 28m

Ottawa

Sun 15/3

18:20-09:15

2 stops34h 55m

£622

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 United Kingdom to Ottawa

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 Ottawa?

In general, January is the cheapest month to fly from United Kingdom to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £461. If you aren’t able to travel during the month of January, then book flights to Ottawa from United Kingdom during February instead. Flights to Ottawa in February, while not as cheap as those in January, still average around £468.

What is the cheapest day to depart on your flight to Ottawa?

The cheapest day to depart on your flight to Ottawa is on a Monday when prices can be found for as low as £541. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £601. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ottawa.

What is the cheapest time of day to depart on your flight to Ottawa?

Flying to Ottawa from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £471 when looking at flights departing in the evening. In the morning is when there is more demand to fly to Ottawa, so prices are often more expensive at around £576 per ticket.

What is the cheapest United Kingdom to Ottawa flight route?

Fly from London Heathrow to Ottawa for the best United Kingdom - Ottawa flight prices

How far in advance should I book a flight to Ottawa?

You are more likely to see cheaper flights to Ottawa from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around £544 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from United Kingdom for as low as £381 on momondo.

What cabin class options are available on United Kingdom to Ottawa flights?

There are 3 cabin classes available to choose from on United Kingdom to Ottawa 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 United Kingdom to Ottawa flights?

You could potentially save up to 19% on your flight if you consider stops on a United Kingdom to Ottawa flight.

Cheap United Kingdom to Ottawa flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Ottawa

Best price found

£594

Fastest flight time

7h 20m

Direct flights

Tue, Thu, Fri and Sun

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from United Kingdom in the past 72 hours is £594. The best return flight deal from United Kingdom to Ottawa found on momondo in the last 72 hours is £520.
The fastest flight from United Kingdom to Ottawa takes 7h 20m
Direct flights go from United Kingdom to Ottawa on Tuesday, Thursday, Friday and Sunday. There are no airlines offering direct flights..
There is 1 airport near Ottawa: Ottawa (YOW)
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Ottawa Airport?

    Prices for flights from United Kingdom to Ottawa Airport were last updated today.

  • How many operators does momondo search for flights from United Kingdom to Ottawa Airport?

  • How old do you have to be to fly from United Kingdom to Ottawa 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 United Kingdom to Ottawa Airport.

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

    The required travel and health documents for your Ottawa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ottawa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from United Kingdom to Ottawa?

Best airlines flying from United Kingdom to Ottawa

Compare and see reviews for airlines that fly from United Kingdom to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom £299Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom £333Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
KLMPriceFrom £346Free CancellationRating
7.8
1,386 reviews
Search KLM flights
Air FrancePriceFrom £357Free CancellationRating
7.4
1,468 reviews
Search Air France flights
Virgin AtlanticPriceFrom £364Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
Air TransatPriceFrom £402Free CancellationRating
7.7
439 reviews
Search Air Transat flights
LufthansaPriceFrom £446Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Smiths Falls

Why use momondo?

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

It is quick and easy to find United Kingdom to Ottawa 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 Ottawa that suits you.

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

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

How can momondo help me find flights from United Kingdom to Ottawa?

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 Ottawa from United Kingdom.

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

If you are simply researching potential flights to Ottawa, momondo offers a useful price alert feature which will track prices for flights to Ottawa from United Kingdom and alert you when they change.

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