£204+ Cheap flights to Ottawa

— YOW
29 Sep — 6 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Ottawa in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ottawa

Sun 27/908:00 -
1 stop14h 16m
Sun 4/1019:30 -
1 stop10h 10m
Deal found 30/8£449
Sat 26/908:30 -
1 stop11h 40m
Sat 3/1021:00 -
Nonstop6h 35m
Deal found 27/8£450
Wed 14/1017:00 -
2 stops36h 20m
Wed 21/1017:10 -
1 stop11h 15m
Deal found 30/8£451
Tue 13/1008:55 -
1 stop11h 05m
Tue 20/1017:10 -
1 stop9h 45m
Deal found 29/8£452
Tue 13/1008:55 -
1 stop11h 05m
Tue 20/1017:10 -
1 stop15h 35m
Deal found 28/8£454
Sun 27/917:00 -
1 stop27h 00m
Sun 4/1017:25 -
1 stop11h 00m
Deal found 30/8£455
Tue 15/921:55 -
3 stops24h 40m
Thu 15/1018:25 -
2 stops15h 10m
Deal found 26/8£457
Sun 13/909:40 -
Nonstop8h 00m
Wed 30/916:00 -
1 stop13h 45m
Deal found 26/8£459
Tue 8/912:40 -
1 stop12h 20m
Thu 8/1018:25 -
2 stops17h 40m
Deal found 25/8£459
Fri 4/909:40 -
Nonstop8h 00m
Thu 10/916:00 -
1 stop13h 45m
Deal found 30/8£460
Sat 19/912:40 -
1 stop12h 20m
Tue 22/918:25 -
2 stops17h 45m
Deal found 27/8£461
Wed 23/909:40 -
1 stop15h 20m
Wed 30/918:25 -
2 stops18h 25m
Deal found 26/8£462

Find flight deals to Ottawa

Return from

£449

One-way from

£204

Popular in

December

Cheapest in

June

Average price

£543

Good round-trip deal

£394 or less

Good one-way deal

£211 or less
United Airlines
  • United Airlines
  • 27/9-4/10
  • 2 total stops
  • 24h 26m total
  • London to Ottawa
Air Transat
  • Air Transat
  • 18/9
  • 1 total stop
  • 12h 20m total
  • London to Ottawa
Highest demand for flights based on searches. 6% potential increase in price (£36 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for return flights in August 2026
Price to beat on a round-trip flight from London to Ottawa.
Price to beat on a one-way flight from London to Ottawa.

Cheapflights 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

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sun 27/9

08:00-17:16

1 stop14h 16m

Ottawa

Sun 4/10

19:30-10:40

1 stop10h 10m

£449

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sun 11/10

17:45-00:20

1 stop11h 35m

Ottawa

Sun 18/10

18:25-13:50

2 stops14h 25m

£492

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Thu 1/10

12:40-00:25

1 stop16h 45m

Ottawa

Wed 7/10

13:50-09:25

1 stop14h 35m

£498

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 10/9

09:30-12:25

Nonstop7h 55m

Ottawa

Fri 2/10

14:35-06:30

1 stop10h 55m

£533

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 10/9

09:30-12:25

Nonstop7h 55m

Ottawa

Tue 6/10

14:35-06:30

1 stop10h 55m

£533
Fastest return journey

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Tue 13/10

09:30-13:58

1 stop9h 28m

Ottawa

Wed 21/10

21:00-08:35

Nonstop6h 35m

£533

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Sun 13/9

22:10-00:20

2 stops31h 10m

Ottawa

Tue 15/9

18:25-20:30

2 stops21h 05m

£550

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Sat 21/11

11:40-22:15

1 stop15h 35m

Ottawa

Mon 30/11

12:45-09:45

1 stop16h 00m

£579

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Sat 21/11

11:40-17:58

1 stop11h 18m

Ottawa

Sun 29/11

17:40-09:45

1 stop11h 05m

£579

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Thu 5/11

11:40-17:58

1 stop11h 18m

Ottawa

Tue 24/11

10:20-09:45

1 stop18h 25m

£581

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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

Cheapflights Insights

Everything you need to know about your flight to Ottawa

How long is the flight to Ottawa?

On average, a flight from London to Ottawa takes 19 hours 2 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 Transat, Air France and Air Canada.

Rainfall in Ottawa 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

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).

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

To ensure you get the cheapest price possible for a flight to Ottawa, you should look to book at least 75 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.

Reviews of airlines servicing Ottawa

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.

Crew

8.5

Boarding

8.0

Overall

7.8

Entertainment

7.1

Food

6.8

Comfort

7.3

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.

Crew

8.5

Boarding

8.0

Overall

7.8

Entertainment

7.1

Food

6.8

Comfort

7.3

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.

Crew

8.5

Boarding

8.0

Overall

7.8

Entertainment

7.1

Food

6.8

Comfort

7.3

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.

Crew

8.5

Boarding

8.0

Overall

7.8

Entertainment

7.1

Food

6.8

Comfort

7.3

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.

Crew

8.5

Boarding

8.0

Overall

7.8

Entertainment

7.1

Food

6.8

Comfort

7.3

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.

Crew

8.5

Boarding

8.0

Overall

7.8

Entertainment

7.1

Food

6.8

Comfort

7.3

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. 6 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 2 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 Transat 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 £100, while return flights cost around £335.

  • How much is a return flight to Ottawa?

    A return flight to Ottawa will typically cost around £335, however they can be found for as little as £335.

  • 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 55 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. Alt Hotel Ottawa Airport 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
Gatineau
Brockville
Smiths Falls

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