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Cheap flights from Ottawa to London from £171

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 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LON
22 Jan — 29 Jan1
1 adult

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

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 17 January 2025.

Round-trip from

£473

One-way from

£171

Popular in

December

Cheapest in

February

Average price

£592
Virgin Atlantic
  • Virgin Atlantic
  • 18/2-25/2
  • 2 total stops
  • 20h 50m total
  • Ottawa to London
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WestJet
  • WestJet
  • 19/2
  • 1 total stop
  • 25h 35m total
  • Ottawa to London
Search Deals
High demand for flights, 1% potential price rise
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Best time to find cheap flights, 1% potential price drop
Search Deals
Average for round-trip flights in January 2025
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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 17 January 2025.

Tue 18/217:20YOW - LHR
1 stop9h 40mVirgin Atlantic
Tue 25/209:00LHR - YOW
1 stop11h 10mVirgin Atlantic
Deal found 17/1£473
Mon 20/117:20YOW - LHR
2 stops12h 25mMultiple Airlines
Mon 27/106:20LHR - YOW
1 stop13h 50mMultiple Airlines
Deal found 16/1£490
Mon 20/117:20YOW - LHR
2 stops12h 25mKLM
Mon 27/106:30LHR - YOW
2 stops13h 40mKLM
Deal found 16/1£508
Thu 23/117:20YOW - LHR
1 stop20h 00mAir France
Thu 30/106:20LHR - YOW
1 stop13h 50mAir France
Deal found 16/1£529
Thu 1/517:05YOW - STN
2 stops24h 20mMultiple Airlines
Wed 7/509:05STN - YOW
2 stops28h 01mMultiple Airlines
Deal found 17/1£543
Mon 17/214:50YOW - LGW
1 stop13h 55mPorter Airlines
Mon 24/211:40LGW - YOW
1 stop18h 00mPorter Airlines
Deal found 17/1£566
Sat 3/521:00YOW - LHR
Nonstop6h 35mLufthansa
Sat 24/512:40LHR - YOW
Nonstop7h 20mLufthansa
Deal found 16/1£572
Fri 14/217:35YOW - LHR
1 stop22h 00mAir Canada
Fri 21/215:00LHR - YOW
1 stop23h 42mAir Canada
Deal found 15/1£574
Mon 7/417:15YOW - LCY
2 stops11h 15mKLM
Mon 14/410:00LCY - YOW
2 stops19h 09mKLM
Deal found 15/1£576
Mon 7/417:10YOW - LGW
1 stop12h 35mAir Transat
Mon 14/412:40LGW - YOW
1 stop17h 02mAir Transat
Deal found 15/1£578
Mon 3/317:20YOW - LTN
1 stop17h 55mMultiple Airlines
Mon 10/307:10LTN - YOW
1 stop13h 00mMultiple Airlines
Deal found 17/1£579
Mon 3/314:10YOW - LGW
2 stops21h 35mMultiple Airlines
Mon 10/307:05LGW - YOW
2 stops30h 41mMultiple Airlines
Deal found 17/1£583

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 858,174 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 18/2

17:20-08:00

1 stop9h 40m

London Heathrow

Tue 25/2

09:00-15:10

1 stop11h 10m

£473

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 11/2

17:20-10:30

1 stop12h 10m

London Heathrow

Tue 18/2

06:20-15:10

1 stop13h 50m

£474

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 16/2

17:20-10:45

2 stops12h 25m

London Heathrow

Mon 24/2

09:00-15:10

1 stop11h 10m

£490

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 16/2

17:20-10:45

2 stops12h 25m

London Heathrow

Mon 24/2

06:30-15:10

2 stops13h 40m

£508

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 5/2

06:15-12:50

1 stop25h 35m

London Heathrow

Mon 10/2

14:50-16:48

1 stop30h 58m

£530

OttawaLondon

YOW - STN

YOWSTN

Ottawa

Thu 1/5

17:05-22:25

2 stops24h 20m

London Stansted

Wed 7/5

09:05-08:06

2 stops28h 01m

£543

OttawaLondon

YOW - LTN

YOWLTN

Ottawa

Thu 1/5

07:00-16:35

2 stops28h 35m

London Luton

Wed 7/5

10:00-08:06

2 stops27h 06m

£543

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/5

18:40-10:00

1 stop10h 20m

London Heathrow

Wed 7/5

18:00-23:07

1 stop10h 07m

£565

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 17/2

14:50-09:45

1 stop13h 55m

London Gatwick

Mon 24/2

11:40-00:40

1 stop18h 00m

£566

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 3/5

21:00-08:35

Nonstop6h 35m

London Heathrow

Sat 24/5

12:40-15:00

Nonstop7h 20m

£572

Flights are sorted by cheapest return flights first.

Deals found on 16/1

Showing 1-10 of 38 results
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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 10 January 2025.

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 August is currently the most expensive (average of £161). 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 17 January 2025.

It’s typically best to fly out from Ottawa to London in the evening. Doing so could potentially save you 12% 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 17 January 2025.
Read reviews from past customers who have flown KLM, Air Canada and WestJet 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.
Porter Airlines
7.9
Good
276 reviews
Check prices

Boarding

8.2

Overall

7.9

Crew

8.7

Comfort

8.0

Entertainment

6.9

Food

7.6

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Porter Airlines
7.9
Good
276 reviews
Porter Airlines
7.9
Good
276 reviews
Check prices

Boarding

8.2

Overall

7.9

Crew

8.7

Comfort

8.0

Entertainment

6.9

Food

7.6

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

KLM
7.8
Good
1,339 reviews
Porter Airlines
7.9
Good
276 reviews
Check prices

Boarding

8.2

Overall

7.9

Crew

8.7

Comfort

8.0

Entertainment

6.9

Food

7.6

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Air Transat
7.8
Good
381 reviews
Porter Airlines
7.9
Good
276 reviews
Check prices

Boarding

8.2

Overall

7.9

Crew

8.7

Comfort

8.0

Entertainment

6.9

Food

7.6

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Austrian Airlines
7.6
Good
786 reviews
Porter Airlines
7.9
Good
276 reviews
Check prices

Boarding

8.2

Overall

7.9

Crew

8.7

Comfort

8.0

Entertainment

6.9

Food

7.6

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

SWISS
7.5
Good
1,598 reviews
Porter Airlines
7.9
Good
276 reviews
Check prices

Boarding

8.2

Overall

7.9

Crew

8.7

Comfort

8.0

Entertainment

6.9

Food

7.6

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

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 2 airlines. 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 £473. Other airlines that can offer you cheap pricing are Air France, from £474, and KLM, from £508. Virgin Atlantic is priced at 27% 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?

    £171 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 £353 and £467, 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 August is currently the most expensive (average of £161). 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

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Deal
Hounslow
Gatwick
Milton Keynes
Croydon
Luton
Slough
Ilford
Hayes
Eastbourne
Maidstone
Winchester
Southend-on-Sea
Wembley
Ipswich
Watford
Crawley
Southall
Stansted
High Wycombe

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Alternative routes for Ottawa to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ottawa to London

Discover the top 2 airlines 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 858,174 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest£596Average£606FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapest£604Average£654FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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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.

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