£215+ Cheap flights to Ottawa

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
— YOW
6 Sep — 13 Sep1
1 adult

Flights to Ottawa in 2025

Find the latest flights to Ottawa in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 1 September 2025.

Return from

£471

One-way from

£215

Popular in

August

Cheapest in

January

Average price

£537

Good round-trip deal

£537 or less

Good one-way deal

£602 or less
18/9-28/9
  • 18/9-28/9
  • 5 total stops
  • 68h 17m total
  • London to Ottawa
18/9
  • 18/9
  • 2 total stops
  • 30h 27m total
  • London to Ottawa
Highest demand for flights based on searches. 13% potential increase in price (£64 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Average for return flights in September 2025
Price to beat on a round-trip flight from London to Ottawa.
Price to beat on a one-way flight from London to Ottawa.

Find flight deals to Ottawa

Cheapest flights to Ottawa
Explore the most affordable flight options available to Ottawa. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2025.

Mon 6/1010:45LGW - YOW
2 stops18h 37mWestJet
Fri 10/1005:55YOW - LGW
2 stops22h 30mWestJet
Deal found 30/8£474
Tue 16/910:45LGW - YOW
2 stops18h 37mWestJet
Tue 30/905:55YOW - LGW
2 stops22h 30mWestJet
Deal found 31/8£475
Wed 10/909:40LGW - YOW
1 stop27h 26mAir Transat
Thu 6/1106:45YOW - LGW
1 stop22h 00mAir Transat
Deal found 1/9£477
Wed 10/920:50LGW - YOW
3 stops32h 32mMultiple Airlines
Thu 6/1114:50YOW - LGW
3 stops24h 45mMultiple Airlines
Deal found 1/9£480
Thu 11/910:00LGW - YOW
1 stop19h 21mAir Transat
Sun 14/917:05YOW - LGW
1 stop12h 40mAir Transat
Deal found 31/8£482
Thu 16/1006:15LHR - YOW
1 stop13h 50mAir France
Thu 23/1017:15YOW - LHR
1 stop15h 30mAir France
Deal found 31/8£483
Tue 16/919:05LGW - YOW
3 stops34h 17mMultiple Airlines
Tue 30/905:55YOW - LGW
3 stops33h 20mMultiple Airlines
Deal found 31/8£484
Sat 27/916:00LHR - YOW
1 stop22h 11mAir Canada
Sat 4/1021:00YOW - LHR
Nonstop6h 35mAir Canada
Deal found 30/8£484
Tue 16/918:25STN - YOW
3 stops34h 57mMultiple Airlines
Tue 30/905:55YOW - STN
3 stops31h 15mMultiple Airlines
Deal found 31/8£484
Thu 9/1010:45LGW - YOW
2 stops42h 37mWestJet
Sat 11/1005:55YOW - LGW
2 stops22h 30mWestJet
Deal found 31/8£486
Thu 9/1014:05LHR - YOW
Nonstop7h 20mAir Canada
Sat 11/1018:10YOW - LHR
1 stop21h 50mAir Canada
Deal found 31/8£486
Fri 12/912:40LGW - YOW
1 stop13h 20mAir Transat
Sun 14/917:05YOW - LGW
1 stop12h 40mAir Transat
Deal found 30/8£487

Cheapflights Fare Finder

 
Locate flights to Ottawa that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 1 September 2025.
Use the filters below to find and compare flights to Ottawa that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Mon 6/10

10:45-00:22

2 stops18h 37m

Ottawa

Fri 10/10

05:55-09:25

2 stops22h 30m

£474

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 16/9

10:45-00:22

2 stops18h 37m

Ottawa

Tue 30/9

05:55-09:25

2 stops22h 30m

£475

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 18/9

14:05-16:25

Nonstop7h 20m

Ottawa

Sat 27/9

20:55-06:30

1 stop28h 35m

£477

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Thu 16/10

10:45-00:22

2 stops18h 37m

Ottawa

Thu 23/10

05:55-09:25

2 stops22h 30m

£480

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Thu 11/9

10:00-00:21

1 stop19h 21m

Ottawa

Sun 14/9

17:05-10:45

1 stop12h 40m

£482

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 16/10

06:15-15:05

1 stop13h 50m

Ottawa

Thu 23/10

17:15-13:45

1 stop15h 30m

£483

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sun 28/9

07:40-00:22

2 stops21h 42m

Ottawa

Sun 5/10

17:05-17:45

2 stops19h 40m

£484

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 27/9

16:00-09:11

1 stop22h 11m

Ottawa

Sat 4/10

21:00-08:35

Nonstop6h 35m

£484

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 16/9

19:05-00:22

3 stops34h 17m

Ottawa

Tue 30/9

05:55-20:15

3 stops33h 20m

£484

LondonOttawa

STN - YOW

STNYOW

London Stansted

Tue 16/9

18:25-00:22

3 stops34h 57m

Ottawa

Tue 30/9

05:55-18:10

3 stops31h 15m

£484

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Showing 1-10 of 60 results
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Best time to book a flight to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Ottawa

When is the best time to book a flight to Ottawa?

Use this chart to determine the optimal time to book a return flight from London to Ottawa. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight to Ottawa, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

How long is the flight to Ottawa?

On average, a flight from London to Ottawa takes 13 hours 35 minutes. Flights to Ottawa from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the cheapest airlines that fly to Ottawa?

The cheapest airlines flying from London to Ottawa are Air Canada, United Airlines and KLM.

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 inches per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 1 September 2025.
See what other customers who have flown with Air Transat, Air France, andVirgin Atlantic to Canada have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

7.9

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

7.9

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

7.9

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

7.9

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

7.9

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Comfort

7.3

Crew

8.5

Overall

7.8

Boarding

7.9

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

FAQs about flying to Ottawa

Getting around Ottawa

Public transport in Ottawa is provided by OC Transpo (buses and the light rail O-Train). Driving is pretty easy and parking spots are freely available. Ottawa is a great city for walking and cycling too. Most of the sights in the Downtown area are within walking distance of each other. Taxis, tour buses and riverboats are all other ways of seeing the city.

Getting from the Airport to the City

The airport, Ottawa International, at which flights to Ottawa land, is well connected by public transport as well as by taxi and limousine. There are hotel shuttle and limousine services available to the centre of Ottawa. Buses depart from outside the Arrivals area. Taxis are also available.

What is good to know if travelling to Ottawa?

  • The annual Canadian Tulip Festival is the largest of its kind in the world, and takes place every May through Ottawa and Gatineau. The festival dates back to 1945, when Queen Juliana of the Netherlands gave a gift of 100,000 tulip bulbs to Canada. Today, the festival showcases tulips throughout the city, with more than three million tulips on display for ten days in May.
  • Canada Day, on 1 July, is celebrated best in the country’s capital. Major events take place throughout the city, but the focus of the entertainment is (understandably) on Parliament Hill. Hundreds of thousands of people take to the streets to celebrate with concerts, street displays and fireworks in the evening.
  • Parliament Hill is the first spot most tourists visit. Don’t miss the sound and light show which runs on summer evenings. Half an hour long, the film about Canada is projected onto the Parliament Buildings accompanied by fantastic lighting effects. The show is free and no booking or tickets are required.
  • The Byward Market, east of downtown, is a huge neighbourhood, characterised by its open air market stalls. Fresh fruit, vegetables, flowers and art are all on sale in the stalls, while the surrounding shops have become increasingly boutique in recent years. Visit during the day for some shopping or browsing, or at night time for some of Ottawa’s best restaurants, bars and clubs.
  • For open air pursuits, the Rideau Canal is one of the best spots in town. Boat trips are available, for views of the city by water. These can usually be arranged at your hotel or at the canal. The banks of the river are popular routes for joggers and cyclists. Best of all, when the canal freezes over in the winter, it is transformed into a huge outdoor skating rink.

Ottawa airport overview

Considering it’s the capital’s airport, Ottawa Macdonald-Cartier International is not a big air field. However, travellers who have used it have nothing but praise for it. It’s a much-garlanded and admired airport. Among other awards, it was ranked number one in the world in the two to five million passenger category by Airports Council International in 2011. 

Macdonald-Cartier International is part of the busy air corridor between Ottawa, Montreal and Toronto, known as the Eastern Triangle. Most of the flights that arrive at the airport are from other parts of Canada and the US. However, there is a London Heathrow-Ottawa route and one from Frankfurt too.

With more than four million passengers each year, it’s Canada’s sixth-busiest airport. Macdonald-Cartier International is a focus city for Air Canada and a base for First Air, the Northern Canadian carrier. It has United States border pre-clearance facilities, an important feature that can save travellers a little time.

  • What airport do you fly into for flights to Ottawa?

    Booking a flight to Ottawa (YOW) is your only option if you intend on flying to Ottawa. It is only a 6.6 mi journey from Ottawa to Ottawa’s city center. 7 airlines have flights to Ottawa from London on a daily basis. Booking flights to Ottawa should not be difficult; the airport handles an average of 4 flights from London per day.

  • Can I find cheaper flights to Ottawa if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ottawa on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ottawa?

    Based on reviews from Cheapflights users, Air Canada is rated the highest out of the airlines that fly to Ottawa.

  • What is the cheapest airport to fly to in Ottawa?

    Ottawa is currently the cheapest airport to fly to in Ottawa. One-way flights to Ottawa typically cost £53, while return flights cost around £70.

  • How much is a return flight to Ottawa?

    A return flight to Ottawa will typically cost around £1,042, however they can be found for as little as £94.

  • Where does the fastest flight to Ottawa depart from?

    For those looking to save time traveling to Ottawa, London offers the quickest one-way flight (7 hours 20 minutes).

  • Does Ottawa have car hire?

    Yes. Those touching down at Ottawa can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ottawa?

    Yes. Ottawa has hotels nearby for those requiring accommodations. Authentic Log Cabin Rental in a Private Waterfront Setting between Ottawa, Ontario and Montreal, Québec is the closest property to Ottawa (0.0 mi away from Ottawa).

See more FAQs

Travelling to a place near Ottawa?

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