£277+ 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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
— YOW
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

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 24 October 2025.

Return from

£426

One-way from

£277

Popular in

August

Cheapest in

January

Average price

£544

Good round-trip deal

£542 or less

Good one-way deal

£630 or less
Air Canada
  • Air Canada
  • 19/11-2/10
  • 4 total stops
  • 31h 47m total
  • London to Ottawa
15/1
  • 15/1
  • 1 total stop
  • 14h 58m total
  • London to Ottawa
Highest demand for flights based on searches. 12% potential increase in price (£79 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Average for return flights in October 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

Enter your travel dates to find the best prices.

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 24 October 2025.

Wed 19/1109:00LHR - YOW
2 stops13h 42mAir Canada
Fri 2/1021:55YOW - LHR
2 stops18h 05mAir Canada
Deal found 22/10£426
Sun 9/1113:25LHR - YOW
2 stops32h 51mMultiple Airlines
Sat 26/918:40YOW - LHR
1 stop10h 20mMultiple Airlines
Deal found 22/10£431
Fri 7/1109:00LHR - YOW
2 stops15h 18mMultiple Airlines
Tue 19/509:20YOW - LHR
2 stops16h 10mMultiple Airlines
Deal found 22/10£432
Sat 8/1113:25LHR - YOW
1 stop13h 53mAir Canada
Wed 13/505:15YOW - LHR
2 stops20h 15mAir Canada
Deal found 22/10£434
Sat 8/1113:25LHR - YOW
2 stops34h 13mAir Canada
Fri 2/1007:00YOW - LHR
1 stop9h 00mAir Canada
Deal found 22/10£435
Sat 22/1115:00LHR - YOW
1 stop29h 00mAir Canada
Sat 29/1110:50YOW - LHR
1 stop15h 20mAir Canada
Deal found 23/10£439
Fri 7/1112:00LHR - YOW
Nonstop7h 30mAir Canada
Tue 19/509:20YOW - LHR
2 stops16h 10mAir Canada
Deal found 22/10£442
Fri 7/1109:00LHR - YOW
2 stops13h 42mMultiple Airlines
Tue 11/1110:20YOW - LHR
2 stops15h 50mMultiple Airlines
Deal found 21/10£444
Sat 8/1109:00LHR - YOW
2 stops29h 42mAir Canada
Wed 26/1110:20YOW - LHR
2 stops15h 50mAir Canada
Deal found 22/10£445
Fri 7/1113:25LHR - YOW
1 stop31h 53mAir Canada
Wed 26/1110:20YOW - LHR
2 stops15h 50mAir Canada
Deal found 22/10£448
Sat 15/1106:50LHR - YOW
2 stops14h 28mAir Canada
Thu 20/1119:25YOW - LHR
2 stops20h 10mAir Canada
Deal found 22/10£448
Sat 8/1111:40LGW - YOW
1 stop17h 59mAir Transat
Fri 2/1014:15YOW - LGW
1 stop14h 35mAir Transat
Deal found 22/10£461

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 24 October 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

LHR - YOW

LHRYOW

London Heathrow

Sat 22/11

15:00-15:00

1 stop29h 00m

Ottawa

Sat 29/11

20:00-20:35

2 stops19h 35m

£439

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 1/12

06:00-19:18

2 stops18h 18m

Ottawa

Wed 10/12

14:05-20:35

2 stops25h 30m

£444

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 9/11

06:50-16:18

2 stops14h 28m

Ottawa

Mon 27/4

19:25-21:00

2 stops20h 35m

£451

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 18/11

09:00-18:38

2 stops14h 38m

Ottawa

Sun 18/1

10:20-07:10

2 stops15h 50m

£466

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 21/11

09:00-17:42

2 stops13h 42m

Ottawa

Fri 28/11

19:25-06:30

1 stop30h 05m

£469

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 21/11

09:00-21:18

2 stops17h 18m

Ottawa

Fri 28/11

21:55-09:20

Nonstop6h 25m

£471

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 20/11

08:55-15:10

1 stop11h 15m

Ottawa

Thu 27/11

17:20-07:55

1 stop9h 35m

£473

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 13/11

08:55-15:10

1 stop11h 15m

Ottawa

Thu 20/11

17:20-18:20

1 stop20h 00m

£474

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 18/2

11:40-18:26

1 stop11h 46m

Ottawa

Fri 27/2

15:05-09:45

1 stop13h 40m

£488

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 11/3

13:25-08:18

2 stops22h 53m

Ottawa

Sun 15/3

14:50-07:10

1 stop12h 20m

£500

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 60 results
1
2
3
...
6

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 17 October 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 18 hours 39 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 24 October 2025.
See what other customers who have flown with Air Transat, Virgin Atlantic, andAir France to Canada have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.4

Entertainment

7.1

Crew

8.5

Boarding

7.9

Food

6.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

Comfort

7.4

Entertainment

7.1

Crew

8.5

Boarding

7.9

Food

6.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

Comfort

7.4

Entertainment

7.1

Crew

8.5

Boarding

7.9

Food

6.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

Comfort

7.4

Entertainment

7.1

Crew

8.5

Boarding

7.9

Food

6.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

Comfort

7.4

Entertainment

7.1

Crew

8.5

Boarding

7.9

Food

6.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

Comfort

7.4

Entertainment

7.1

Crew

8.5

Boarding

7.9

Food

6.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

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 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 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 £121, while return flights cost around £150.

  • How much is a return flight to Ottawa?

    A return flight to Ottawa will typically cost around £153, however they can be found for as little as £150.

  • 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 30 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
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Find the best flight deals to Ottawa

Some of the lowest fares we’ve come across for flights to Ottawa.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Ottawa?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Ottawa. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets to Ottawa?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Ottawa.

Can Cheapflights find flights to Ottawa with no change fees?

Certainly. Search results for flights to Ottawa shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights to Ottawa become cheaper?

Of course! You can track prices for flights to Ottawa and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.