Latest deals
Insights
When to book
FAQs
Price Alerts
Flights to Ottawa

£204 Cheap flights to Ottawa

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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? Stopover? Instantly customise 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 the United Kingdom to Ottawa

Cheap return flights

Enter your travel dates to find the best prices.
Air Canada Logo
14:05 - 21:52LHR  London Heathrow-YOW Ottawa
12h 47m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Island
Air Canada Logo
14:45 - 08:35YOW  Ottawa-LHR London Heathrow
12h 50m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
£435Air Canada
Fri, 18 Sep - Mon, 21 Sep
Multiple Airlines Logo
17:55 - 13:58LHR  London Heathrow-YOW Ottawa
25h 03m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
14:45 - 06:30YOW  Ottawa-LHR London Heathrow
10h 45m1 stop Montreal Pierre Elliott Trudeau Intl
£437Multiple Airlines
Tue, 15 Sep - Sun, 27 Sep
Air Transat Logo
12:40 - 00:25LGW  London Gatwick-YOW Ottawa
16h 45m1 stop Toronto Pearson Intl
Air Transat Logo
16:00 - 07:55YOW  Ottawa-LGW London Gatwick
10h 55m1 stop Toronto Pearson Intl
£438Air Transat
Tue, 20 Oct - Thu, 22 Oct
Air Transat Logo
11:35 - 10:12LGW  London Gatwick-YOW Ottawa
27h 37m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Island
Air Transat Logo
19:40 - 07:55YOW  Ottawa-LGW London Gatwick
7h 15mdirect
£438Air Transat
Fri, 2 Oct - Sun, 4 Oct
Air Canada Logo
14:05 - 21:52LHR  London Heathrow-YOW Ottawa
12h 47m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Island
Air Canada Logo
14:45 - 08:35YOW  Ottawa-LHR London Heathrow
12h 50m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
£440Air Canada
Fri, 18 Sep - Mon, 21 Sep
KLM Logo
06:30 - 15:00LHR  London Heathrow-YOW Ottawa
13h 30m2 stops Amsterdam Schiphol Paris Charles de Gaulle
KLM Logo
18:10 - 13:50YOW  Ottawa-LHR London Heathrow
15h 40m2 stops Paris Charles de Gaulle Amsterdam Schiphol
£441KLM
Wed, 14 Oct - Wed, 28 Oct
Multiple Airlines Logo
12:40 - 20:00LGW  London Gatwick-YOW Ottawa
12h 20m1 stop Toronto Pearson Intl
Multiple Airlines Logo
06:55 - 09:25YOW  Ottawa-LGW London Gatwick
45h 30m2 stops Toronto Pearson Intl Dublin
£443Multiple Airlines
Wed, 14 Oct - Sat, 24 Oct
Air France Logo
19:45 - 15:00LHR  London Heathrow-YOW Ottawa
24h 15m1 stop Paris Charles de Gaulle
Air France Logo
17:10 - 16:35YOW  Ottawa-LHR London Heathrow
18h 25m1 stop Paris Charles de Gaulle
£444Air France
Mon, 12 Oct - Mon, 19 Oct
Air France Logo
06:20 - 15:00LHR  London Heathrow-YOW Ottawa
13h 40m1 stop Paris Charles de Gaulle
Air France Logo
17:10 - 10:30YOW  Ottawa-LHR London Heathrow
12h 20m1 stop Paris Charles de Gaulle
£454Air France
Thu, 5 Nov - Mon, 7 Jun
KLM Logo
17:50 - 00:20LHR  London Heathrow-YOW Ottawa
11h 30m1 stop Toronto Pearson Intl
KLM Logo
05:30 - 07:45YOW  Ottawa-LHR London Heathrow
22h 15m2 stops Toronto Pearson Intl Detroit Metropolitan Wayne County
£488KLM
Wed, 30 Sep - Thu, 29 Oct

momondo Fare Finder

 
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
Fastest return journey

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Fri 18/9

14:05-21:52

2 stops12h 47m

Ottawa

Mon 21/9

14:45-08:35

2 stops12h 50m

£435

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Tue 15/9

17:55-13:58

2 stops25h 03m

Ottawa

Sun 27/9

14:45-06:30

1 stop10h 45m

£437

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Tue 20/10

12:40-00:25

1 stop16h 45m

Ottawa

Thu 22/10

16:00-07:55

1 stop10h 55m

£438

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Fri 2/10

11:35-10:12

2 stops27h 37m

Ottawa

Sun 4/10

19:40-07:55

Nonstop7h 15m

£438

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Fri 18/9

14:05-21:52

2 stops12h 47m

Ottawa

Mon 21/9

14:45-08:35

2 stops12h 50m

£440

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Wed 14/10

06:30-15:00

2 stops13h 30m

Ottawa

Wed 28/10

18:10-13:50

2 stops15h 40m

£441

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Wed 14/10

12:40-20:00

1 stop12h 20m

Ottawa

Sat 24/10

06:55-09:25

2 stops45h 30m

£443

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Mon 12/10

19:45-15:00

1 stop24h 15m

Ottawa

Mon 19/10

17:10-16:35

1 stop18h 25m

£444

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 5/11

06:20-15:00

1 stop13h 40m

Ottawa

Mon 7/6

17:10-10:30

1 stop12h 20m

£454

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Wed 30/9

17:50-00:20

1 stop11h 30m

Ottawa

Thu 29/10

05:30-07:45

2 stops22h 15m

£488

Flights are sorted by cheapest return flights first.

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

See travel insights to Ottawa from

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 £413. 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 £441.

What is the absolute cheapest flight to Ottawa?

Users booking trips to Ottawa from Toronto found flights 75% 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 £521. 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 Wednesday because tickets tend to average around £611. 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 £543 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 £597 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 £467 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 AIRPORTMay28% cheaperFlying from London Heathrow Airport to Ottawa costs on average just £398 in May
MOST EXPENSIVE MONTH TO FLY TO OTTAWA FROM LONDON HEATHROW AIRPORTDecember27% more expensiveIt costs about £699 for flights to Ottawa from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO OTTAWA FROM LONDON HEATHROW AIRPORTAugust388% 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

£204

Best Round-Trip Price

£435

Fastest flight time

30h 05m

Popular in

July
The best one-way flight price to Ottawa from United Kingdom in the last 5 days is £204 (London Stansted to Ottawa).
Search Deals
The best return flight price to Ottawa from United Kingdom in the last 5 days is £435 (London Heathrow to Ottawa).
Search Deals
The fastest flight to Ottawa from United Kingdom takes 30h 05m (London City to Ottawa).
Search Deals
July has the highest demand for flights to Ottawa, with a 12% 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 £541. 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 £358 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 £518 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 September 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

We make it super easy to schedule, organise 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
Sun 4/10
Sun 11/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ottawa

Popular Flights to Ottawa

London to Ottawa Flightsfrom £456
Manchester to Ottawa Flightsfrom £655
Birmingham to Ottawa Flightsfrom £883
Glasgow to Ottawa Flightsfrom £727
Leeds/Bradford to Ottawa Flightsfrom £1,002
Newcastle upon Tyne to Ottawa Flightsfrom £732