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Cheap flights from London to Ottawa from £266

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YOW
22 1月 — 29 1月1
1 adult

The best prices from London to Ottawa are usually found in February or January, booked 14 days in advance, depart on a Tuesday or Wednesday and return on a Sunday

Cheap flight deals from London to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 1月 2025.

Round-trip from

£420

One-way from

£274

Popular in

August

Cheapest in

February

Average price

£520
KLM
  • KLM
  • 22/1-29/1
  • 3 total stops
  • 52h 35m total
  • London to Ottawa
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5/2
  • 5/2
  • 3 total stops
  • 59h 37m total
  • London to Ottawa
Search Deals
High demand for flights, 13% potential price rise
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Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in January 2025
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Find flight deals from London to Ottawa

Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 1月 2025.

週三 22/111:30LHR - YOW
1 stop32h 40mMultiple Airlines
週三 29/105:55YOW - LHR
2 stops19h 55mMultiple Airlines
Deal found 16/1£420
週二 18/206:20LHR - YOW
1 stop13h 50mVirgin Atlantic
週二 25/217:20YOW - LHR
1 stop15h 25mVirgin Atlantic
Deal found 16/1£421
週四 30/111:45LHR - YOW
2 stops17h 25mKLM
週一 3/217:20YOW - LHR
2 stops12h 25mKLM
Deal found 16/1£429
週四 30/106:20LHR - YOW
1 stop13h 50mAir France
週一 3/217:20YOW - LHR
1 stop15h 25mAir France
Deal found 17/1£450
週六 3/512:40LGW - YOW
1 stop24h 26mAir Transat
週五 9/514:25YOW - LGW
1 stop15h 20mAir Transat
Deal found 16/1£463
週一 3/220:05LCY - YOW
2 stops33h 04mKLM
週日 9/205:55YOW - LCY
2 stops29h 40mKLM
Deal found 17/1£470
週一 3/211:55LGW - YOW
2 stops17h 14mMultiple Airlines
週五 7/205:55YOW - LGW
2 stops24h 00mMultiple Airlines
Deal found 17/1£475
週六 15/215:00LHR - YOW
1 stop23h 42mLufthansa
週六 22/212:45YOW - LHR
1 stop26h 50mLufthansa
Deal found 16/1£485
週三 22/114:50LHR - YOW
1 stop14h 55mWestJet
週三 29/120:10YOW - LHR
2 stops35h 40mWestJet
Deal found 16/1£520
週三 7/518:35LGW - YOW
2 stops31h 34mSWISS
週二 20/515:55YOW - LGW
2 stops20h 55mSWISS
Deal found 16/1£538
週一 5/518:40LHR - YOW
2 stops31h 29mSWISS
週二 20/515:55YOW - LHR
2 stops20h 55mSWISS
Deal found 16/1£542
週四 13/209:00LHR - YOW
1 stop12h 56mAir Canada
週四 20/211:00YOW - LHR
1 stop15h 10mAir Canada
Deal found 16/1£569

Find flights from London to Ottawa within your budget

Customise your flight search to find flights from London to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 1月 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

週四 30/1

11:45-00:10

2 stops17h 25m

Ottawa

週一 3/2

17:20-13:45

1 stop15h 25m

£420

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

週二 18/2

06:20-15:10

1 stop13h 50m

Ottawa

週二 25/2

17:20-13:45

1 stop15h 25m

£421

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

週四 30/1

11:45-00:10

2 stops17h 25m

Ottawa

週一 3/2

17:20-10:45

2 stops12h 25m

£429

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

週四 30/1

06:20-15:10

1 stop13h 50m

Ottawa

週一 3/2

17:20-13:45

1 stop15h 25m

£450

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

週六 3/5

12:40-08:06

1 stop24h 26m

Ottawa

週五 9/5

14:25-10:45

1 stop15h 20m

£463

LondonOttawa

LCY - YOW

LCYYOW

London City

週一 3/2

20:05-00:09

2 stops33h 04m

Ottawa

週日 9/2

05:55-16:35

2 stops29h 40m

£470

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

週一 3/2

11:55-00:09

2 stops17h 14m

Ottawa

週五 7/2

05:55-10:55

2 stops24h 00m

£475

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

週六 15/2

15:00-09:42

1 stop23h 42m

Ottawa

週六 22/2

12:45-20:35

1 stop26h 50m

£485

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

週四 30/1

14:50-20:50

3 stops35h 00m

Ottawa

週一 3/2

20:10-12:50

3 stops35h 40m

£524

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

週三 7/5

18:35-21:09

2 stops31h 34m

Ottawa

週二 20/5

15:55-17:50

2 stops20h 55m

£538

Flights are sorted by cheapest return flights first.

Deals found on 16/1

Showing 1-10 of 34 results
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Best time to book a flight from London to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from London 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.

Travel insights for flights from London to Ottawa

Get recent, data-driven insights about flights from London to Ottawa including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London 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 10 January 2025.

To ensure you get the cheapest price possible for a flight from London to Ottawa, you should look to book at least 14 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.

What is the cheapest month to book a flight from London to Ottawa?

Currently, January is the cheapest month in which you can book a flight from London to Ottawa (average of £588). Flying from London to Ottawa in December is currently the most expensive (average of £875). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to YOW?

Find hourly flight availability from London to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 1月 2025.

It’s typically best to fly out from London to Ottawa in the evening. Doing so could potentially save you 18% on the flight price compared to flying at midday, which is usually more expensive.

What is the cheapest day to fly from London 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.

Travellers seeking maximum savings on their London to Ottawa flight should consider departing on Wednesday at midday when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 17 1月 2025.
Read reviews from past customers who have flown KLM, SWISS and Air Canada from London to Ottawa. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,339 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,339 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air Transat
7.8
Good
381 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

LOT
7.6
Good
1,114 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,598 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Virgin Atlantic
7.5
Good
664 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Related info for your journey

Find useful and relevant information for your journey from London to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    If you book a flight to Ottawa from London, you will be flying to Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa. There are 0 flights from London to Ottawa per day from 7 different airlines.

  • What are the cheapest airlines flying from London to Ottawa round-trip?

    Virgin Atlantic, at £421, was found to be the cheapest airline from London to Ottawa.Alternate airlines flying return to your destination include KLM and Air France. Users have found that Virgin Atlantic is 32% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London to Ottawa one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £304. Users have also found prices from £429 and £577 on Air Transat and Lufthansa, respectively.

  • What are the most popular routes from London to Ottawa?

    When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.

  • What are the cheapest flights from London to Ottawa?

    Looking for the cheapest flight from London to Ottawa? While on average our users pay £1,684, our data indicates the cheapest price to be £405. The most popular route (London Heathrow - Ottawa), is priced around £400.

  • Where are the most common stopover locations when flying from London to Ottawa?

    London to Ottawa flights have a stopover in Paris most of the time. Paris is followed by Toronto in terms of the most popular stopover location on flights from London to Ottawa.

  • What are some popular things to do or see while on a stopover in Paris?

    Most Paris visitors opt to spend their time experiencing Eiffel Tower, Champs-Elysées, and Arc De Triomphe. Eiffel Tower, Champs-Elysées and Arc De Triomphe are located about 15.8 mi, 14.7 mi, and 15.0 mi, respectively from Paris Charles de Gaulle if you are interested in checking them out. Those landing in Paris looking to spend some time exploring during their stopover can hire a car for about £34 per day.

  • What are some popular points of interest to see during a stopover in Toronto?

    The majority of Toronto visitors spend their time at Union Station, CN Tower, and Yonge-Dundas Square. Union Station, CN Tower, and Yonge-Dundas Square can be visited by travelling about 12.1 mi, 11.9 mi, and 12.0 mi respectively from Toronto Pearson Intl. Those looking to explore during their stopover in Toronto can hire a car from Toronto Pearson Intl for about £32 per day.

  • Where are the least popular stopover locations for London to Ottawa flights?

    The least popular stopover on flights from London to Ottawa is Montreal.

  • Can I find deals for flights from London to Ottawa that include hotel bookings?

    Yes. In addition to deals on London to Ottawa flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ottawa.

  • Can I find deals for business class flights from London to Ottawa?

    Yes. Cheapflights offers flight deals from London to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Ottawa?

    Currently, January is the cheapest month in which you can book a flight from London to Ottawa (average of £588). Flying from London to Ottawa in December is currently the most expensive (average of £875). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Fly from London to Ottawa on these airlines

Choose from the following airlines for your flight from London to Ottawa. Flights are based on user searches made on Cheapflights and were last updated on 17 1月 2025.
Air Canada flights from London to Ottawa
Air Transat flights from London to Ottawa
Lufthansa flights from London to Ottawa

Top 7 airlines flying from London to Ottawa

Discover the top 7 airlines that operate flights from London to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 1月 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£406Average£498FlexibilityNo cancel feeOn-time77%
Search Air France flights
Virgin AtlanticCheapest£414Average£486FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£418Average£541FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air TransatCheapest£465Average£570FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
LufthansaCheapest£509Average£658FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£525Average£645FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£579Average£789FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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 from London to Ottawa?

Cheapflights makes it easy to find London to Ottawa flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Ottawa from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Ottawa with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Ottawa flexibly with Cheapflights today.

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

Not ready to book yet? You can track prices for flights from London to Ottawa on Cheapflights with our Price Alert feature and get notified when better prices are available.

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