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Flights to Ottawa

£217 Cheap flights to Ottawa

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ottawa departing on 11/9. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from the United Kingdom to Ottawa

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
06:50 - 18:55LHR  London Heathrow-YOW Ottawa
17h 05m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
United Airlines Logo
19:30 - 14:40YOW  Ottawa-LHR London Heathrow
14h 10m2 stops Washington, D.C. Dulles Intl Frankfurt am Main
£431United Airlines
Thu, 1 Oct - Tue, 13 Oct
Air Canada Logo
09:30 - 12:25LHR  London Heathrow-YOW Ottawa
7h 55mdirect
Air Canada Logo
18:55 - 06:30YOW  Ottawa-LHR London Heathrow
6h 35mdirect
£434Air Canada
Thu, 17 Sep - Thu, 24 Sep
Multiple Airlines Logo
06:30 - 15:00LHR  London Heathrow-YOW Ottawa
13h 30m2 stops Amsterdam Schiphol Paris Charles de Gaulle
Multiple Airlines Logo
17:10 - 07:55YOW  Ottawa-LHR London Heathrow
9h 45m1 stop Paris Charles de Gaulle
£436Multiple Airlines
Mon, 14 Dec - Tue, 29 Dec
Multiple Airlines Logo
06:30 - 15:00LHR  London Heathrow-YOW Ottawa
13h 30m2 stops Amsterdam Schiphol Paris Charles de Gaulle
Multiple Airlines Logo
17:10 - 07:55YOW  Ottawa-LHR London Heathrow
9h 45m1 stop Paris Charles de Gaulle
£436Multiple Airlines
Mon, 14 Dec - Sun, 27 Dec
Air Transat Logo
11:35 - 17:35LGW  London Gatwick-YOW Ottawa
11h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Air Transat Logo
16:00 - 10:45YOW  Ottawa-LGW London Gatwick
13h 45m1 stop Toronto Pearson Intl
£442Air Transat
Sun, 27 Sep - Tue, 6 Oct
Air Transat Logo
11:35 - 17:35LGW  London Gatwick-YOW Ottawa
11h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Air Transat Logo
16:00 - 10:45YOW  Ottawa-LGW London Gatwick
13h 45m1 stop Toronto Pearson Intl
£442Air Transat
Sun, 27 Sep - Wed, 7 Oct
Air France Logo
15:00 - 00:20LHR  London Heathrow-YOW Ottawa
14h 20m2 stops Paris Charles de Gaulle Toronto Pearson Intl
Air France Logo
18:25 - 16:35YOW  Ottawa-LHR London Heathrow
17h 10m2 stops Toronto Pearson Intl Paris Charles de Gaulle
£443Air France
Thu, 17 Sep - Thu, 24 Sep
Air Canada Logo
12:40 - 18:53LHR  London Heathrow-YOW Ottawa
11h 13m1 stop Halifax Intl
Air Canada Logo
15:10 - 06:30YOW  Ottawa-LHR London Heathrow
10h 20m1 stop Montreal Pierre Elliott Trudeau Intl
£445Air Canada
Thu, 20 Aug - Wed, 26 Aug
United Airlines Logo
08:00 - 17:16LHR  London Heathrow-YOW Ottawa
14h 16m1 stop Chicago O'Hare Intl
United Airlines Logo
19:30 - 10:40YOW  Ottawa-LHR London Heathrow
10h 10m1 stop Washington, D.C. Dulles Intl
£448United Airlines
Sat, 19 Sep - Sat, 26 Sep
Air France Logo
12:40 - 00:42LHR  London Heathrow-YOW Ottawa
17h 02m2 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl
Air France Logo
17:10 - 07:55YOW  Ottawa-LHR London Heathrow
9h 45m1 stop Paris Charles de Gaulle
£449Air France
Sun, 13 Dec - Mon, 28 Dec

momondo Fare Finder

 
Locate flights to Ottawa that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 8 August 2026.
Use the filters below to find and compare flights to Ottawa that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 1/10

06:50-18:55

2 stops17h 05m

Ottawa

Tue 13/10

19:30-14:40

2 stops14h 10m

£431
Fastest return journey

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 17/9

09:30-12:25

Nonstop7h 55m

Ottawa

Thu 24/9

18:55-06:30

Nonstop6h 35m

£434

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Mon 14/12

06:30-15:00

2 stops13h 30m

Ottawa

Tue 29/12

17:10-07:55

1 stop9h 45m

£436

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Mon 14/12

06:30-15:00

2 stops13h 30m

Ottawa

Sun 27/12

17:10-07:55

1 stop9h 45m

£436

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Sun 27/9

11:35-17:35

1 stop11h 00m

Ottawa

Tue 6/10

16:00-10:45

1 stop13h 45m

£442

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Sun 27/9

11:35-17:35

1 stop11h 00m

Ottawa

Wed 7/10

16:00-10:45

1 stop13h 45m

£442

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 17/9

15:00-00:20

2 stops14h 20m

Ottawa

Thu 24/9

18:25-16:35

2 stops17h 10m

£443

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 20/8

12:40-18:53

1 stop11h 13m

Ottawa

Wed 26/8

15:10-06:30

1 stop10h 20m

£445

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sat 19/9

08:00-17:16

1 stop14h 16m

Ottawa

Sat 26/9

19:30-10:40

1 stop10h 10m

£448

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sun 13/12

12:40-00:42

2 stops17h 02m

Ottawa

Mon 28/12

17:10-07:55

1 stop9h 45m

£449

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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Ottawa flights insights and trends

Explore insights for your Ottawa flight to craft the best travel plan

What is the cheapest month to fly to Ottawa?

In general, June 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 £414. If you aren’t able to travel during the month of June, then book flights to Ottawa from United Kingdom during May instead. Flights to Ottawa in May, while not as cheap as those in June, still average around £446.

What is the absolute cheapest flight to Ottawa?

Users booking trips to Ottawa from New York found flights 53% cheaper than the average price of flights to Ottawa. To find the cheapest price to Ottawa from your area, use momondo’s Airport-to-Airport Pricing Tool.

See prices from:

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 Friday when prices can be found for as low as £525. 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 £618. 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 morning is the least expensive time of day to depart. momondo users have found prices as low as £546 when looking at flights departing in the morning. At midday is when there is more demand to fly to Ottawa, so prices are often more expensive at around £622 per ticket.

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 £548 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 £468 on momondo.

Cheapest flights to Ottawa

Find the cheapest flights to Ottawa from your nearest city or airport
Find flights from London Heathrow Airport to Ottawa
CHEAPEST MONTH TO FLY TO OTTAWA FROM LONDON HEATHROW AIRPORTMay27% cheaperFlying from London Heathrow Airport to Ottawa costs on average just £405 in May
MOST EXPENSIVE MONTH TO FLY TO OTTAWA FROM LONDON HEATHROW AIRPORTDecember28% more expensiveIt costs about £704 for flights to Ottawa from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO OTTAWA FROM LONDON HEATHROW AIRPORTAugust354% more users visitedMore momondo users searched in flights to Ottawa from London Heathrow Airport in August than any other month

Cheap Ottawa flight deals and tips

Summary info about Ottawa flight prices, duration and airlines

Best One-Way Price

£217

Best Round-Trip Price

£431

Fastest flight time

8h 00m

Popular in

August
The best one-way flight price to Ottawa from United Kingdom in the last 5 days is £217 (London Stansted to Ottawa).
Search Deals
The best return flight price to Ottawa from United Kingdom in the last 5 days is £431 (London Heathrow to Ottawa).
Search Deals
The fastest flight to Ottawa from United Kingdom takes 8h 00m (London Gatwick to Ottawa).
Search Deals
August has the highest demand for flights to Ottawa, with a 11% price increase on average.
Search Deals

Frequently asked questions about flying to Ottawa

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

The best time to book a flight to Ottawa from United Kingdom is 54 days out, which is when prices tend to be around £542. Keep in mind that you might be able to find cheaper flights to Ottawa at any time. In fact, our users found flights for as low as £359 in the past 72 hours.

Is there an alternative airport near Ottawa?

Finding an alternative and possibly cheaper destination airport near Ottawa is possible. If you are planning a flight to Ottawa, consider booking flights to Ottawa Airport (7 mi from Ottawa city centre), Mont Tremblant Intl Airport (82 mi from Ottawa city centre) or Kingston Airport (93 mi from Ottawa city centre).

Is there a cheaper alternative to flying into Ottawa?

You can find deals at Ottawa Airport for £418 on average, but that price can change based on your departure airport. To save money, try momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Ottawa Airport?

Prices for flights to Ottawa Airport are refreshed on a daily basis.

How many operators does momondo search for flights to Ottawa Airport?

The number of operators available for flights to Ottawa Airport is 7 as of August 2026.

How old do you have to be to fly to Ottawa Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Ottawa Airport.

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

The necessary travel and health documents for your Ottawa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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 to Ottawa?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ottawa.

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

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

How can momondo help me find flights to Ottawa?

momondo helps you find the best flight to Ottawa by providing filters to narrow your choice of flights to those matching your criteria. You can select fights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight 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 and alert you when they change.

An easier way to manage your Ottawa trip

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Find better results for your trip to Ottawa

Popular Flights to Ottawa

Popular routes according to searches in the past day on momondo
London to Ottawa Flightsfrom £453
Manchester to Ottawa Flightsfrom £680
Glasgow to Ottawa Flightsfrom £616
Birmingham to Ottawa Flightsfrom £788
Newcastle upon Tyne to Ottawa Flightsfrom £814
Leeds/Bradford to Ottawa Flightsfrom £856