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

Cheapflights users have booked flights from Ottawa to London round-trip from £506. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £525, and Aer Lingus, from £528. United Airlines is priced at 9% 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?

£259 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and Lufthansa, with prices starting from £263 and £269, respectively.

What is the cheapest day to fly from Ottawa to London?

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

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.

What are the cheapest flights from Ottawa to London?

While on average a flight from Ottawa to London is generally £572, our data shows the cheapest flight currently is £511. When looking at the most popular route, (Ottawa - London Heathrow), you can expect to pay £475 for that flight.

What are the most reliable airlines from Ottawa to London?

The top 3 most reliable airlines when flying from Ottawa to London are Air Canada (83%), Aegean Airlines (83%) and Austrian Airlines (83%).

What is the cheapest day to fly round-trip from Ottawa to London?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Travelers have found it’s best to book a flight 55 days in advance to save up to 12% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 55 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ottawa to London 1-2 weeks in advance for as low as £506, or £506 for flights within the next 24 hours.

What is the cheapest month to fly from Ottawa to London?

Our data shows that February tends to be the cheapest month to fly to London from Ottawa. Users have commonly found prices around £556 for the month, but tickets can be as low as £423. Due to multiple factors, prepare for potentially higher prices in December.

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 1 outbound flight to London per day from 1 airline. Ottawa is conveniently located just 6.6 mi from Ottawa’s city center.

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.

£181+ Flights from Ottawa to London

Cheapflights Tip: The best prices from Ottawa to London are usually found in February or March, booked 54 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Ottawa to London

Round-trip from	£503
One-way from	£181
Popular in	December
Cheapest in	February
Average price	£578
Good round-trip deal	£545 or less

10/9-25/9
3 total stops
39h 37m total
Ottawa to London

Search Deals

16/7
1 total stop
14h 20m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (£26 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Price to beat on a round-trip flight from Ottawa to London (LON).

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 13 June 2025.

Wed 10/905:55YOW - LGW

2 stops22h 55mMultiple Airlines

Thu 25/912:40LGW - YOW

1 stop16h 42mMultiple Airlines

Deal found 11/6£503

Sun 2/1117:57YOW - LHR

1 stop12h 08mUnited Airlines

Thu 2/416:40LHR - YOW

2 stops27h 25mUnited Airlines

Deal found 12/6£506

Tue 5/817:05YOW - STN

2 stops16h 55mMultiple Airlines

Thu 14/806:55STN - YOW

2 stops15h 50mMultiple Airlines

Deal found 11/6£506

Thu 9/1017:15YOW - LHR

1 stop9h 45mVirgin Atlantic

Mon 13/1006:15LHR - YOW

1 stop13h 50mVirgin Atlantic

Deal found 12/6£526

Thu 25/910:00YOW - LHR

2 stops17h 00mAer Lingus

Thu 2/1009:50LHR - YOW

2 stops16h 19mAer Lingus

Deal found 11/6£528

Thu 19/614:20YOW - LGW

1 stop12h 35mPorter Airlines

Wed 2/712:40LGW - YOW

1 stop13h 31mPorter Airlines

Deal found 11/6£537

Mon 21/720:55YOW - LHR

1 stop28h 35mMultiple Airlines

Thu 14/806:00LHR - YOW

2 stops22h 08mMultiple Airlines

Deal found 12/6£539

Mon 4/818:55YOW - LHR

Nonstop6h 35mAir Canada

Mon 11/812:40LHR - YOW

1 stop15h 28mAir Canada

Deal found 11/6£541

Tue 2/918:40YOW - LHR

1 stop30h 50mLufthansa

Thu 18/906:55LHR - YOW

2 stops22h 24mLufthansa

Deal found 12/6£547

Wed 10/919:50YOW - LHR

1 stop11h 00mAustrian Airlines

Thu 25/910:25LHR - YOW

2 stops42h 54mAustrian Airlines

Deal found 11/6£551

Sat 23/817:05YOW - LGW

1 stop9h 45mAir Transat

Sun 31/809:40LGW - YOW

1 stop19h 41mAir Transat

Deal found 11/6£565

Mon 15/917:15YOW - LHR

1 stop9h 45mAir France

Thu 9/1006:15LHR - YOW

1 stop13h 50mAir France

Deal found 11/6£570

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 June 2025.

Wed 10/905:55YOW - LGW

2 stops22h 55mMultiple Airlines

Thu 25/912:40LGW - YOW

1 stop16h 42mMultiple Airlines

Deal found 11/6£503

Sun 2/1117:57YOW - LHR

1 stop12h 08mUnited Airlines

Thu 2/416:40LHR - YOW

2 stops27h 25mUnited Airlines

Deal found 12/6£506

Fri 3/1017:15YOW - LHR

1 stop9h 45mVirgin Atlantic

Tue 7/1006:15LHR - YOW

1 stop13h 50mVirgin Atlantic

Deal found 11/6£525

Thu 25/910:00YOW - LHR

2 stops17h 00mAer Lingus

Thu 2/1009:50LHR - YOW

2 stops16h 19mAer Lingus

Deal found 11/6£528

Mon 4/818:55YOW - LHR

Nonstop6h 35mAir Canada

Mon 11/812:40LHR - YOW

1 stop15h 28mAir Canada

Deal found 11/6£541

Tue 2/918:40YOW - LHR

1 stop30h 50mLufthansa

Thu 18/906:55LHR - YOW

2 stops22h 24mLufthansa

Deal found 12/6£547

Wed 10/919:50YOW - LHR

1 stop11h 00mAustrian Airlines

Thu 25/910:25LHR - YOW

2 stops42h 54mAustrian Airlines

Deal found 11/6£551

Mon 23/614:20YOW - LGW

1 stop15h 25mPorter Airlines

Wed 2/709:40LGW - YOW

1 stop16h 31mPorter Airlines

Deal found 11/6£560

Sat 23/817:05YOW - LGW

1 stop9h 45mAir Transat

Sun 31/809:40LGW - YOW

1 stop19h 41mAir Transat

Deal found 11/6£565

Mon 15/917:15YOW - LHR

1 stop9h 45mAir France

Thu 9/1006:15LHR - YOW

1 stop13h 50mAir France

Deal found 11/6£570

Sat 11/1005:55YOW - LGW

2 stops22h 30mWestJet

Mon 20/1010:45LGW - YOW

2 stops18h 37mWestJet

Deal found 12/6£584

Mon 17/1116:10YOW - LCY

2 stops15h 40mSWISS

Sat 22/1108:40LCY - YOW

2 stops17h 37mSWISS

Deal found 10/6£642

Direct flights from Ottawa to London
Explore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 June 2025.

Sat 11/1021:00YOW - LHR

Nonstop6h 35mAir Canada

Sat 18/1012:40LHR - YOW

Nonstop7h 20mAir Canada

Deal found 12/6£550

Wed 10/921:00YOW - LHR

Nonstop6h 35mLufthansa

Wed 17/912:40LHR - YOW

Nonstop7h 20mLufthansa

Deal found 11/6£553

Mon 7/718:55YOW - LHR

Nonstop6h 35mMultiple Airlines

Thu 17/714:05LHR - YOW

Nonstop7h 20mMultiple Airlines

Deal found 12/6£2,032

Last-minute flights from Ottawa to London
Discover last-minute flight deals from Ottawa to London. Data last updated 13 June 2025 and is based on user searches.

Fri 13/605:55YOW - LHR

2 stops19h 30mDelta

Wed 18/609:35LHR - YOW

2 stops19h 47mDelta

Deal found 10/6£703

Wed 18/610:00YOW - STN

2 stops20h 50mMultiple Airlines

Tue 24/618:25STN - YOW

2 stops25h 40mMultiple Airlines

Deal found 11/6£606

Wed 18/621:55YOW - LHR

2 stops18h 05mMultiple Airlines

Tue 24/617:50LHR - YOW

2 stops24h 54mMultiple Airlines

Deal found 11/6£656

Wed 18/613:55YOW - LHR

2 stops13h 05mAer Lingus

Wed 25/609:50LHR - YOW

2 stops16h 20mAer Lingus

Deal found 11/6£718

Wed 18/621:00YOW - LHR

Nonstop6h 35mLufthansa

Wed 25/612:40LHR - YOW

Nonstop7h 20mLufthansa

Deal found 12/6£784

Thu 19/614:40YOW - LHR

2 stops20h 00mUnited Airlines

Thu 26/608:00LHR - YOW

1 stop13h 43mUnited Airlines

Deal found 12/6£506

Thu 19/614:20YOW - LGW

1 stop12h 35mPorter Airlines

Wed 2/712:40LGW - YOW

1 stop13h 31mPorter Airlines

Deal found 11/6£537

Thu 19/611:20YOW - LGW

1 stop15h 35mAir Transat

Wed 25/612:40LGW - YOW

1 stop24h 25mAir Transat

Deal found 11/6£566

Thu 19/607:00YOW - LGW

1 stop19h 55mMultiple Airlines

Thu 26/614:50LGW - YOW

2 stops38h 32mMultiple Airlines

Deal found 12/6£625

Thu 19/605:55YOW - LGW

2 stops22h 30mWestJet

Wed 25/610:45LGW - YOW

2 stops18h 37mWestJet

Deal found 12/6£730

Thu 19/617:15YOW - LHR

1 stop9h 45mAir France

Wed 25/606:15LHR - YOW

1 stop13h 50mAir France

Deal found 11/6£744

Thu 19/609:00YOW - LTN

2 stops21h 30mMultiple Airlines

Wed 2/710:00LTN - YOW

2 stops16h 11mMultiple Airlines

Deal found 11/6£782

One-way flights from Ottawa to London
Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 13 June 2025.

Wed 16/711:00YOW - LGW

1 stop14h 20mMultiple Airlines

Deal found 11/6£181

Thu 7/805:55YOW - STN

2 stops29h 45mMultiple Airlines

Deal found 12/6£203

Thu 7/805:55YOW - LTN

2 stops29h 40mMultiple Airlines

Deal found 12/6£204

Thu 7/817:05YOW - LHR

2 stops15h 50mMultiple Airlines

Deal found 12/6£236

Wed 15/1006:10YOW - LHR

2 stops24h 55mWestJet

Deal found 12/6£259

Wed 15/1005:55YOW - LGW

2 stops22h 30mWestJet

Deal found 11/6£261

Sun 27/718:30YOW - LHR

1 stop10h 30mAir Canada

Deal found 12/6£263

Mon 14/718:55YOW - LHR

Nonstop6h 35mLufthansa

Deal found 11/6£269

Thu 24/705:55YOW - SEN

3 stops45h 05mMultiple Airlines

Deal found 12/6£273

Wed 16/719:55YOW - LHR

1 stop10h 55mAustrian Airlines

Deal found 12/6£273

Tue 15/715:25YOW - LGW

2 stops13h 25mPorter Airlines

Deal found 11/6£283

Thu 7/805:55YOW - LCY

2 stops34h 45mMultiple Airlines

Deal found 12/6£286

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ottawa to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 10/9

05:55-09:50

2 stops22h 55m

London Gatwick

Thu 25/9

12:40-00:22

1 stop16h 42m

£503

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 2/11

17:57-11:05

1 stop12h 08m

London Heathrow

Thu 2/4

16:40-15:05

2 stops27h 25m

£506

OttawaLondon

YOW - STN

YOWSTN

Ottawa

Tue 5/8

17:05-15:00

2 stops16h 55m

London Stansted

Thu 14/8

06:55-17:45

2 stops15h 50m

£506

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 3/10

17:15-08:00

1 stop9h 45m

London Heathrow

Tue 7/10

06:15-15:05

1 stop13h 50m

£525

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 25/9

10:00-08:00

2 stops17h 00m

London Heathrow

Thu 2/10

09:50-21:09

2 stops16h 19m

£528

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 21/7

18:30-10:00

1 stop10h 30m

London Heathrow

Thu 14/8

08:40-23:08

2 stops19h 28m

£539

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 4/8

18:55-06:30

Nonstop6h 35m

London Heathrow

Mon 11/8

12:40-23:08

1 stop15h 28m

£541

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 2/9

18:40-06:30

1 stop30h 50m

London Heathrow

Thu 18/9

06:55-00:19

2 stops22h 24m

£547

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 10/9

19:50-11:50

1 stop11h 00m

London Heathrow

Thu 25/9

10:25-00:19

2 stops42h 54m

£551

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 23/6

14:20-10:45

1 stop15h 25m

London Gatwick

Wed 2/7

09:40-21:11

1 stop16h 31m

£560

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 42 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to London

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

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 54 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 £164). 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?

It’s typically best to fly out from Ottawa to London in the afternoon. Doing so could potentially save you 19% on the flight price compared to flying at midday, which is usually more expensive.

Rainfall in London 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

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

Read reviews from past customers who have flown Porter Airlines, KLM and Air Transat 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

8.0

Very Good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Porter Airlines

8.0

Very Good

288 reviews

Porter Airlines

8.0

Very Good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

KLM

7.8

Good

1,358 reviews

Porter Airlines

8.0

Very Good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Air Transat

7.8

Good

396 reviews

Porter Airlines

8.0

Very Good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Austrian Airlines

7.6

Good

802 reviews

Porter Airlines

8.0

Very Good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Air France

7.5

Good

1,463 reviews

Porter Airlines

8.0

Very Good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Related info for your journey

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 1 outbound flight 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 £506. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £525, and Aer Lingus, from £528. United Airlines is priced at 9% 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?
£259 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and Lufthansa, with prices starting from £263 and £269, 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.
What are the most reliable airlines from Ottawa to London?
The top 3 most reliable airlines when flying from Ottawa to London are Air Canada (83%), Aegean Airlines (83%) and Austrian Airlines (83%).
What are the cheapest flights from Ottawa to London?
While on average a flight from Ottawa to London is generally £572, our data shows the cheapest flight currently is £511. When looking at the most popular route, (Ottawa - London Heathrow), you can expect to pay £475 for that flight.
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 £164). 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

Deal

Hounslow

Croydon

Milton Keynes

Gatwick

Luton

Slough

Wembley

Crawley

Eastbourne

Ilford

Southend-on-Sea

Watford

Hayes

Ipswich

Winchester

Folkestone

Maidstone

Dartford

Guildford

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Ottawa to London

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest£474	Average£604	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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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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.

Cheap flights from Ottawa to London from £181

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 16/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Ottawa to London are usually found in February or March, booked 54 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Ottawa to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find flight deals from Ottawa to London

Cheapest flights from Ottawa to LondonExplore 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 13 June 2025.

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 13 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ottawa to London that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to London

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 9 June 2025.

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

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 13 June 2025.

Rainfall in London by month

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

Temperature in London by month

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

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 13 June 2025.

Read reviews from past customers who have flown Porter Airlines, KLM and Air Transat 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.

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?

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

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

What are the most popular routes from Ottawa to London?

What are the most reliable airlines from Ottawa to London?

What are the cheapest flights from Ottawa to London?

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

How can I find direct flights from Ottawa to London?

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

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

Travelling to a place near Ottawa?

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.

Top airline flying from Ottawa to London

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?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 13 June 2025.