Find flights
Deals
Airlines
Travel Guide

£226+ 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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
— YOW
25 Mar — 1 Apr1
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 20 March 2025.

Return from

£429

One-way from

£226

Popular in

August

Cheapest in

January

Average price

£504

Good round-trip deal

£464 or less
United Airlines
  • United Airlines
  • 21/8-4/9
  • 4 total stops
  • 35h 13m total
  • London to Ottawa
30/4
  • 30/4
  • 3 total stops
  • 31h 26m total
  • London to Ottawa
Highest demand for flights based on searches. 15% potential increase in price (£79 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Average for return flights in March 2025
Price to beat on a round-trip 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 20 March 2025.

Thu 21/808:00LHR - YOW
2 stops20h 43mUnited Airlines
Thu 4/910:25YOW - LHR
2 stops14h 30mUnited Airlines
Deal found 19/3£429
Wed 14/515:20LHR - YOW
2 stops14h 02mAir France
Fri 23/517:15YOW - LHR
1 stop12h 15mAir France
Deal found 20/3£435
Wed 7/511:35LGW - YOW
2 stops17h 47mMultiple Airlines
Sat 10/505:55YOW - LGW
2 stops22h 55mMultiple Airlines
Deal found 19/3£442
Thu 1/506:00LHR - YOW
2 stops20h 09mMultiple Airlines
Mon 5/518:40YOW - LHR
1 stop10h 20mMultiple Airlines
Deal found 19/3£444
Tue 22/407:25LHR - YOW
2 stops14h 59mLufthansa
Wed 14/521:00YOW - LHR
Nonstop6h 35mLufthansa
Deal found 19/3£454
Mon 26/512:40LGW - YOW
1 stop13h 21mAir Transat
Mon 2/616:40YOW - LGW
1 stop13h 05mAir Transat
Deal found 20/3£457
Fri 28/309:00LHR - YOW
1 stop18h 06mAir Canada
Sat 5/421:00YOW - LHR
Nonstop6h 35mAir Canada
Deal found 19/3£461
Wed 14/506:15LHR - YOW
1 stop13h 50mVirgin Atlantic
Fri 23/517:15YOW - LHR
1 stop18h 20mVirgin Atlantic
Deal found 19/3£466
Tue 6/511:05LHR - YOW
2 stops32h 59mBrussels Airlines
Tue 13/515:55YOW - LHR
2 stops24h 00mBrussels Airlines
Deal found 19/3£477
Mon 26/514:55STN - YOW
3 stops43h 35mMultiple Airlines
Mon 2/605:55YOW - STN
2 stops35h 15mMultiple Airlines
Deal found 20/3£481
Wed 5/1118:45LGW - YOW
2 stops31h 32mSWISS
Sun 16/1116:10YOW - LGW
2 stops20h 40mSWISS
Deal found 20/3£539
Mon 12/519:10LCY - YOW
2 stops26h 54mLufthansa
Mon 19/515:55YOW - LCY
2 stops19h 30mLufthansa
Deal found 20/3£544

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 20 March 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

Thu 21/8

08:00-23:43

2 stops20h 43m

Ottawa

Thu 4/9

10:25-05:55

2 stops14h 30m

£429

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 14/5

15:20-00:22

2 stops14h 02m

Ottawa

Fri 23/5

17:15-10:30

1 stop12h 15m

£435

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 7/5

11:35-00:22

2 stops17h 47m

Ottawa

Sat 10/5

05:55-09:50

2 stops22h 55m

£442

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 1/5

06:00-21:09

2 stops20h 09m

Ottawa

Mon 5/5

18:40-10:00

1 stop10h 20m

£444

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 22/4

07:25-17:24

2 stops14h 59m

Ottawa

Wed 14/5

21:00-08:35

Nonstop6h 35m

£454

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Mon 26/5

12:40-21:01

1 stop13h 21m

Ottawa

Mon 2/6

16:40-10:45

1 stop13h 05m

£457

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 16/4

14:05-18:57

1 stop9h 52m

Ottawa

Wed 23/4

21:00-08:35

Nonstop6h 35m

£462

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 14/5

06:15-15:05

1 stop13h 50m

Ottawa

Fri 23/5

17:15-16:35

1 stop18h 20m

£466

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 6/5

11:05-15:04

2 stops32h 59m

Ottawa

Tue 13/5

15:55-20:55

2 stops24h 00m

£477

LondonOttawa

STN - YOW

STNYOW

London Stansted

Mon 26/5

14:55-05:30

3 stops43h 35m

Ottawa

Mon 2/6

05:55-22:10

2 stops35h 15m

£481

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 44 results
1
2
3
...
5

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 14 March 2025.

To ensure you get the cheapest price possible for a flight to Ottawa, you should look to book at least 88 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 19 hours 15 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.

When is the cheapest time to fly to Ottawa?

Use this chart to determine the cheapest time to fly return from London to Ottawa. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Ottawa should consider flying on Saturday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Thursday evenings, when prices are usually at their highest.

What are the cheapest airlines that fly to Ottawa?

The cheapest airlines flying from London to Ottawa are Air France, Virgin Atlantic 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 20 March 2025.
See what other customers who have flown with Delta, KLM and Air Transat to Ottawa have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
8.0
Very Good

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

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.

  • 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 France 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 £59, while return flights cost around £93.

  • How much is a return flight to Ottawa?

    A return flight to Ottawa will typically cost around £161, however they can be found for as little as £120.

  • 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
Gatineau
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.