Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ottawa to London from £178

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LON
25 Nov — 2 Dec1
1 adult

The best prices from Ottawa to London are usually found in January or February, booked 72 days in advance, depart on a Sunday or Tuesday and return on a Tuesday

Find flights from Ottawa to London within your budget

Customise your flight search to find flights from Ottawa to London 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 953,013 searches. Data last updated 20 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 13/3

18:20-10:30

1 stop12h 10m

London Heathrow

Sat 22/3

06:30-16:10

2 stops13h 40m

£535

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Mon 31/3

17:00-09:30

2 stops11h 30m

London City

Wed 9/4

07:45-14:50

2 stops12h 05m

£539

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 6/4

17:00-08:00

1 stop10h 00m

London Heathrow

Sat 12/4

06:15-14:50

1 stop13h 35m

£540

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 4/12

11:00-07:10

1 stop15h 10m

London Heathrow

Mon 9/12

09:00-16:56

1 stop12h 56m

£545

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 3/12

06:15-12:50

1 stop25h 35m

London Heathrow

Sat 7/12

14:50-00:46

1 stop14h 56m

£546

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 28/4

17:00-10:30

1 stop12h 30m

London Heathrow

Mon 12/5

06:15-14:50

1 stop13h 35m

£551

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 13/3

18:20-10:45

2 stops12h 25m

London Heathrow

Sat 22/3

06:30-16:10

2 stops13h 40m

£552

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 2/12

10:00-09:45

1 stop18h 45m

London Gatwick

Mon 9/12

11:40-18:22

1 stop11h 42m

£554

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 16/3

19:05-11:50

1 stop12h 45m

London Heathrow

Sun 23/3

19:25-19:22

2 stops27h 57m

£555

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 12/4

16:45-10:00

1 stop12h 15m

London Heathrow

Sat 26/4

12:40-15:20

Nonstop7h 40m

£559

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 43 results
1
2
3
...
5

Cheap flight deals from Ottawa to London

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to London (LON). 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 20 November 2024.

Round-trip from

£535

One-way from

£178

Popular in

December

Cheapest in

January
KLM
  • KLM
  • 13/3-22/3
  • 3 total stops
  • 25h 50m total
  • Ottawa to London
Search Deals
WestJet
  • WestJet
  • 9/12
  • 1 total stop
  • 25h 35m total
  • Ottawa to London
Search Deals
High demand for flights, 14% potential price rise
Search Deals
Best time to find cheap flights, 7% potential price drop
Search Deals

Find flight deals from Ottawa to London

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2024.

Mon 2/1214:45YOW - LHR
1 stop11h 25mMultiple Airlines
Mon 9/1206:50LHR - YOW
2 stops13h 13mMultiple Airlines
Deal found 19/11£542
Wed 27/1120:10YOW - LHR
2 stops35h 40mWestJet
Wed 4/1214:50LHR - YOW
1 stop14h 56mWestJet
Deal found 19/11£543
Wed 4/1211:00YOW - LHR
1 stop15h 10mAir Canada
Mon 9/1209:00LHR - YOW
1 stop12h 56mAir Canada
Deal found 19/11£545
Mon 2/1210:00YOW - LGW
1 stop18h 45mPorter Airlines
Mon 9/1211:40LGW - YOW
1 stop11h 42mPorter Airlines
Deal found 18/11£554
Tue 3/1206:15YOW - LGW
2 stops22h 30mMultiple Airlines
Fri 6/1211:40LGW - YOW
2 stops31h 11mMultiple Airlines
Deal found 19/11£565
Tue 3/1217:25YOW - LGW
1 stop11h 20mAir Transat
Mon 9/1211:40LGW - YOW
1 stop11h 42mAir Transat
Deal found 19/11£587
Tue 3/1209:45YOW - LHR
2 stops17h 40mUnited Airlines
Sun 8/1207:00LHR - YOW
2 stops21h 54mUnited Airlines
Deal found 19/11£604
Tue 3/1217:20YOW - LHR
1 stop18h 15mVirgin Atlantic
Fri 6/1214:45LHR - YOW
1 stop29h 25mVirgin Atlantic
Deal found 19/11£605
Thu 12/1214:10YOW - LHR
1 stop11h 20mLufthansa
Tue 17/1206:35LHR - YOW
2 stops16h 37mLufthansa
Deal found 19/11£647
Thu 28/1105:55YOW - LHR
2 stops43h 55mDelta
Thu 12/1217:20LHR - YOW
2 stops35h 50mDelta
Deal found 19/11£658
Tue 3/1210:00YOW - LTN
3 stops23h 50mMultiple Airlines
Fri 6/1207:30LTN - YOW
3 stops21h 40mMultiple Airlines
Deal found 19/11£665
Tue 19/1117:20YOW - LHR
1 stop20h 00mAir France
Tue 26/1106:20LHR - YOW
1 stop13h 50mAir France
Deal found 18/11£674

Best time to book a flight from Ottawa to London

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

Travel insights for flights from Ottawa to London

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

How far ahead should I book a flight from Ottawa to London?

Use this chart to determine the optimal time to book a return flight from Ottawa to London. Price data was last updated on 15 November 2024.

The price you pay for your flight from Ottawa to London may vary depending on when you book. For the best chance of a lower fare, look to book 72 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to London (average of £112). Flying from Ottawa to London in July is currently the most expensive (average of £160). 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 YOW to LON?

Find hourly flight availability from Ottawa to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 November 2024.

It’s typically best to fly out from Ottawa to London in the afternoon. Doing so could potentially save you 25% on the flight price compared to flying at midday, which is usually more expensive.

Rainfall in London by month

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

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 20 November 2024.
Read reviews from past customers who have flown Air Canada, WestJet and SWISS from Ottawa to London. 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
1,350 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.9

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

KLM
7.8
Good
1,350 reviews
KLM
7.8
Good
1,350 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.9

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Porter Airlines
7.8
Good
286 reviews
KLM
7.8
Good
1,350 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.9

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Air Transat
7.8
Good
389 reviews
KLM
7.8
Good
1,350 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.9

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Austrian Airlines
7.6
Good
805 reviews
KLM
7.8
Good
1,350 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.9

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

SWISS
7.6
Good
1,635 reviews
KLM
7.8
Good
1,350 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.9

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to London. 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 from for flights from Ottawa to London?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London. On average, Ottawa has 0 outbound flights to London per day from 1 airline. Ottawa is conveniently located just 6.6 mi from Ottawa’s city center.

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

    Cheapflights users have booked flights from Ottawa to London round-trip from £539. Other airlines that can offer you cheap pricing are Air France, from £540, and Air Canada, from £545. KLM is priced at 14% lower than the current average price of a flight leaving 3 months from now.

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

    £178 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and Air Transat, with prices starting from £348 and £358, respectively.

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

    While some choose either Ottawa - London Gatwick or Ottawa - London City, Ottawa - London Heathrow is the most popular route from Ottawa to London.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ottawa to London 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 Ottawa to London?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to London (average of £112). Flying from Ottawa to London in July is currently the most expensive (average of £160). 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

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.

Alternative routes for Ottawa to London

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Heathrow flights
Pearson Intl to Gatwick flights
Pearson Intl to London City flights
Pierre Elliott Trudeau Intl to Heathrow flights
Pearson Intl to Luton flights
Toronto Island to Heathrow flights
Pierre Elliott Trudeau Intl to Gatwick flights
Pearson Intl to Edinburgh flights
Pearson Intl to Stansted flights
Pearson Intl to Manchester flights
Ottawa to Heathrow flights
Ottawa to Gatwick flights
Hamilton to Gatwick flights
Pierre Elliott Trudeau Intl to Edinburgh flights
Pearson Intl to Southampton flights
Pearson Intl to Birmingham flights
Pierre Elliott Trudeau Intl to Manchester flights
Hamilton to Heathrow flights
Pierre Elliott Trudeau Intl to Stansted flights
Pearson Intl to Newcastle upon Tyne flights
Pearson Intl to Leeds flights
Ottawa to Manchester flights
Pierre Elliott Trudeau Intl to Birmingham flights
Ottawa to Stansted flights
Windsor to Heathrow flights
Ottawa to Edinburgh flights
Pearson Intl to Bristol flights
Ottawa to Luton flights
Pearson Intl to Liverpool flights

Top airline flying from Ottawa to London

Discover the top airline that operate flights from Ottawa to London. 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 953,013 searches. Data last updated 20 November 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£568Average£616FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Ottawa to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Ottawa today with Cheapflights!

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

Cheapflights helps you find that perfect flight to London from Ottawa 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 Ottawa to London with no change fees?

Yes, we can. To see specific flights from Ottawa to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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

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.
View all available airlines