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

Currently priced at $431, United Airlines will fly you from London to Ottawa and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Lufthansa - these airlines can fly you to your destination from $434 and $604, respectively. You may be able to fly from London to Ottawa for 42% less than the average price by searching for these airlines.

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

The cheapest airlines for a one-way flight from London to Ottawa are Air Transat ($571), WestJet ($757), and Lufthansa ($1,776).

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

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

What are the cheapest flights from London to Ottawa?

On average you can expect to pay $670 for a flight from London to Ottawa. The cheapest flight overall is $447 while the most popular route, (London Heathrow - Ottawa) is currently priced at $442.

What are the most reliable airlines from London to Ottawa?

The top 3 most reliable airlines when flying from London to Ottawa are Air Canada (100%), Aegean Airlines (100%) and Austrian Airlines (100%).

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

Users have found that flying from London to Ottawa on a Thursday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Find a great deal and save up to 23% by booking at least 33 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to Ottawa within the next two weeks, with the cheapest ticket starting at $709.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Ottawa. Flights to Ottawa from London in January are about $748 on average during January, but can be found for as low as $501.

Most accurate provider : When it comes to deals on London-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Ottawa flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London-Ottawa flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Ottawa (YOW) is the airport you will fly into if you book a flight from London to Ottawa. You should not have trouble finding flights to Ottawa from London; the airport handles an average of 4 inbound flights from London per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Ottawa airport from London. It is only a 6.6 mi journey from Ottawa (YOW) to Ottawa’s city center.

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 vacation 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.

$431+ Flights from London to Ottawa

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Find cheap flights from London to Ottawa with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London to Ottawa are usually found in January or February, booked 88 days in advance, depart on a Friday or Saturday and return on a Saturday

Cheap flight deals from London to Ottawa

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$431 (United Airlines)
Popular in	August
Cheapest in	January
Average price	$708
Good round-trip deal	$609 or less
Good one-way deal	$570 or less

Provider with most accurate pricing for London (LON)-Ottawa flight deals.

Search Deals

Provider most trusted by Cheapflights users for London (LON)-Ottawa flights.

Search Deals

From London (LON) to Ottawa

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($140 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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

Search Deals

Price to beat on a one-way flight from London (LON) to Ottawa.

Search Deals

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 April 17, 2025.

Wed 5/78:40 amLHR - YOW

2 stops30h 18mUnited Airlines

Thu 5/229:50 amYOW - LHR

2 stops15h 55mUnited Airlines

Deal found 4/17

$431

Thu 5/299:30 amLHR - YOW

2 stops15h 45mAir Canada

Fri 6/276:40 pmYOW - LHR

1 stop30h 50mAir Canada

Deal found 4/17

$434

Thu 4/246:30 amLHR - YOW

2 stops22h 14mLufthansa

Wed 4/309:00 pmYOW - LHR

Nonstop6h 35mLufthansa

Deal found 4/17

$592

Wed 9/38:05 pmLHR - YOW

2 stops31h 59mSWISS

Tue 9/1611:05 amYOW - LHR

2 stops24h 30mSWISS

Deal found 4/17

$608

Mon 9/19:40 amLGW - YOW

1 stop15h 21mAir Transat

Fri 9/1911:20 amYOW - LGW

1 stop15h 35mAir Transat

Deal found 4/17

$638

Wed 9/36:35 pmLGW - YOW

2 stops33h 29mSWISS

Tue 9/161:55 pmYOW - LGW

2 stops22h 55mSWISS

Deal found 4/17

$666

Tue 4/227:30 pmLHR - YOW

2 stops31h 04mAustrian Airlines

Wed 5/147:55 pmYOW - LHR

1 stop10h 55mAustrian Airlines

Deal found 4/17

$737

Fri 4/186:15 amLHR - YOW

1 stop13h 50mMultiple Airlines

Tue 5/65:15 pmYOW - LHR

2 stops15h 35mMultiple Airlines

Deal found 4/17

$758

Tue 7/157:40 amLHR - YOW

2 stops18h 30mAer Lingus

Mon 7/211:55 pmYOW - LHR

2 stops13h 05mAer Lingus

Deal found 4/17

$897

Thu 7/106:30 amLHR - YOW

2 stops13h 35mKLM

Sat 7/195:15 pmYOW - LHR

2 stops18h 00mKLM

Deal found 4/17

$929

Tue 7/1512:40 pmLGW - YOW

1 stop13h 31mMultiple Airlines

Mon 7/2111:00 amYOW - LGW

2 stops17h 45mMultiple Airlines

Deal found 4/17

$978

Tue 7/1510:45 amLGW - YOW

2 stops18h 37mWestJet

Mon 7/215:55 amYOW - LGW

2 stops22h 30mWestJet

Deal found 4/17

$1,291

Best flights from London to Ottawa
Discover carefully curated flight deals from London to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2025.

Wed 5/78:40 amLHR - YOW

2 stops30h 18mUnited Airlines

Thu 5/229:50 amYOW - LHR

2 stops15h 55mUnited Airlines

Deal found 4/17

$431

Thu 5/299:30 amLHR - YOW

2 stops15h 45mAir Canada

Fri 6/276:40 pmYOW - LHR

1 stop30h 50mAir Canada

Deal found 4/17

$434

Fri 6/206:30 amLHR - YOW

2 stops20h 35mLufthansa

Wed 6/256:40 pmYOW - LHR

1 stop10h 20mLufthansa

Deal found 4/17

$604

Wed 9/38:05 pmLHR - YOW

2 stops31h 59mSWISS

Tue 9/1611:05 amYOW - LHR

2 stops24h 30mSWISS

Deal found 4/17

$608

Mon 9/19:40 amLGW - YOW

1 stop15h 21mAir Transat

Thu 9/187:00 amYOW - LGW

1 stop22h 45mAir Transat

Deal found 4/17

$638

Fri 7/116:30 amLHR - YOW

2 stops13h 35mMultiple Airlines

Sun 7/205:15 pmYOW - LHR

1 stop18h 20mMultiple Airlines

Deal found 4/17

$820

Tue 7/157:40 amLHR - YOW

2 stops18h 30mAer Lingus

Mon 7/211:55 pmYOW - LHR

2 stops13h 05mAer Lingus

Deal found 4/17

$897

Thu 7/106:30 amLHR - YOW

2 stops13h 35mKLM

Sat 7/195:15 pmYOW - LHR

2 stops18h 00mKLM

Deal found 4/17

$929

Sun 7/137:30 pmLHR - YOW

2 stops33h 50mAustrian Airlines

Mon 7/217:55 pmYOW - LHR

1 stop29h 40mAustrian Airlines

Deal found 4/17

$1,129

Tue 7/1510:45 amLGW - YOW

2 stops18h 37mWestJet

Mon 7/215:55 amYOW - LGW

2 stops22h 30mWestJet

Deal found 4/17

$1,291

Wed 9/36:35 pmLGW - YOW

2 stops33h 29mSWISS

Tue 9/161:55 pmYOW - LGW

2 stops22h 55mSWISS

Deal found 4/17

$666

Fri 9/55:30 amLGW - YOW

2 stops21h 34mTurkish Airlines

Fri 9/195:55 pmYOW - LGW

2 stops23h 25mTurkish Airlines

Deal found 4/17

$1,602

Last-minute flights from London to Ottawa
Discover last-minute flight deals from London to Ottawa. Data last updated April 17, 2025 and is based on user searches.

Fri 4/1812:40 pmLGW - YOW

1 stop10h 40mAir Transat

Tue 5/64:40 pmYOW - LGW

1 stop13h 05mAir Transat

Deal found 4/17

$651

Fri 4/1812:10 pmLHR - YOW

2 stops36h 09mSWISS

Tue 5/63:55 pmYOW - LHR

2 stops24h 50mSWISS

Deal found 4/17

$696

Fri 4/186:15 amLHR - YOW

1 stop13h 50mMultiple Airlines

Tue 5/65:15 pmYOW - LHR

2 stops15h 35mMultiple Airlines

Deal found 4/17

$758

Fri 4/183:40 pmLGW - YOW

2 stops14h 00mMultiple Airlines

Tue 5/64:40 pmYOW - LGW

2 stops17h 00mMultiple Airlines

Deal found 4/17

$1,200

Tue 4/228:30 amLHR - YOW

2 stops18h 05mUnited Airlines

Wed 5/149:50 amYOW - LHR

2 stops16h 25mUnited Airlines

Deal found 4/17

$526

Tue 4/227:30 pmLHR - YOW

2 stops31h 04mAustrian Airlines

Wed 5/147:55 pmYOW - LHR

1 stop10h 55mAustrian Airlines

Deal found 4/17

$737

Thu 4/246:30 amLHR - YOW

2 stops22h 14mLufthansa

Wed 4/309:00 pmYOW - LHR

Nonstop6h 35mLufthansa

Deal found 4/17

$592

Sat 4/263:40 pmLGW - YOW

2 stops14h 00mMultiple Airlines

Sat 5/34:40 pmYOW - LGW

2 stops14h 05mMultiple Airlines

Deal found 4/17

$1,564

Wed 5/78:40 amLHR - YOW

2 stops30h 18mUnited Airlines

Thu 5/229:50 amYOW - LHR

2 stops15h 55mUnited Airlines

Deal found 4/17

$431

Thu 5/156:40 pmLGW - YOW

2 stops51h 24mSWISS

Thu 5/223:55 pmYOW - LGW

2 stops20h 55mSWISS

Deal found 4/17

$673

Thu 5/299:30 amLHR - YOW

2 stops15h 45mAir Canada

Fri 6/276:40 pmYOW - LHR

1 stop30h 50mAir Canada

Deal found 4/17

$434

One-way flights from London to Ottawa
Search for one-way flight options from London to Ottawa. Find affordable one-way fares based on user searches. Data last updated April 17, 2025.

Sun 8/109:45 pmLHR - YOW

2 stops28h 18mMultiple Airlines

Deal found 4/17

$492

Sun 8/108:55 amLGW - YOW

2 stops16h 06mMultiple Airlines

Deal found 4/17

$533

Sat 7/2612:40 pmLGW - YOW

1 stop13h 31mAir Transat

Deal found 4/17

$571

Sun 8/102:10 pmLHR - YOW

1 stop15h 31mWestJet

Deal found 4/17

$757

Sat 7/2612:40 pmLHR - YOW

Nonstop7h 30mLufthansa

Deal found 4/17

$1,776

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 5/7

8:40 am-9:58 am

2 stops30h 18m

Ottawa

Thu 5/22

9:50 am-6:45 am

2 stops15h 55m

$431

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 5/29

9:30 am-8:15 pm

2 stops15h 45m

Ottawa

Fri 6/27

6:40 pm-6:30 am

1 stop30h 50m

$434

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 6/20

6:30 am-10:05 pm

2 stops20h 35m

Ottawa

Wed 6/25

6:40 pm-10:00 am

1 stop10h 20m

$604

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 9/3

8:05 pm-11:04 pm

2 stops31h 59m

Ottawa

Tue 9/16

11:05 am-4:35 pm

2 stops24h 30m

$608

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Mon 9/1

9:40 am-8:06 am

1 stop27h 26m

Ottawa

Wed 9/17

2:20 pm-10:45 am

1 stop15h 25m

$638

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 9/3

6:35 pm-11:04 pm

2 stops33h 29m

Ottawa

Tue 9/16

1:55 pm-5:50 pm

2 stops22h 55m

$666

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 7/11

6:30 am-3:05 pm

2 stops13h 35m

Ottawa

Sun 7/20

5:15 pm-4:35 pm

1 stop18h 20m

$820

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 7/15

7:40 am-9:10 pm

2 stops18h 30m

Ottawa

Mon 7/21

1:55 pm-8:00 am

2 stops13h 05m

$897

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 7/10

6:30 am-3:05 pm

2 stops13h 35m

Ottawa

Sat 7/19

5:15 pm-4:15 pm

2 stops18h 00m

$929

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 7/15

12:40 pm-9:11 pm

1 stop13h 31m

Ottawa

Mon 7/21

11:00 am-9:45 am

2 stops17h 45m

$978

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 19 results

Compare providers for flights from London to Ottawa

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Ottawa in April.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Ottawa flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London-Ottawa flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 London to Ottawa

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

To ensure you get the cheapest price possible for a flight from London 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.

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 $294). Flying from London to Ottawa in May is currently the most expensive (average of $460). 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?

It’s optimal to fly from London to Ottawa in the morning. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight at noon.

Rainfall in Ottawa by month

In terms of precipitation, rainfall in Ottawa ranges from 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

Temperature in Ottawa 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with KLM, Air Transat and Austrian Airlines from London to Ottawa to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,327 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

KLM

7.8

Good

1,327 reviews

KLM

7.8

Good

1,327 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Air Transat

7.8

Good

385 reviews

KLM

7.8

Good

1,327 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Austrian Airlines

7.6

Good

775 reviews

KLM

7.8

Good

1,327 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

SWISS

7.5

Good

1,580 reviews

KLM

7.8

Good

1,327 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

United Airlines

7.4

Good

8,667 reviews

KLM

7.8

Good

1,327 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Related info for your journey

What airport do you fly into for flights to Ottawa from London?
Ottawa (YOW) is the airport you will fly into if you book a flight from London to Ottawa. You should not have trouble finding flights to Ottawa from London; the airport handles an average of 4 inbound flights from London per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Ottawa airport from London. It is only a 6.6 mi journey from Ottawa (YOW) to Ottawa’s city center.
What are the cheapest airlines flying from London to Ottawa round-trip?
Currently priced at $431, United Airlines will fly you from London to Ottawa and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Lufthansa - these airlines can fly you to your destination from $434 and $604, respectively. You may be able to fly from London to Ottawa for 42% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Ottawa one-way?
The cheapest airlines for a one-way flight from London to Ottawa are Air Transat ($571), WestJet ($757), and Lufthansa ($1,776).
What are the most reliable airlines from London to Ottawa?
The top 3 most reliable airlines when flying from London to Ottawa are Air Canada (100%), Aegean Airlines (100%) and Austrian Airlines (100%).
What are the cheapest flights from London to Ottawa?
On average you can expect to pay $670 for a flight from London to Ottawa. The cheapest flight overall is $447 while the most popular route, (London Heathrow - Ottawa) is currently priced at $442.
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 vacation 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 $294). Flying from London to Ottawa in May is currently the most expensive (average of $460). 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

Gatineau

Brockville

Pembroke

Petawawa

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Alternative routes for London to Ottawa

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Other flights to Ottawa

Top airline flying from London to Ottawa

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$589	Average$685	FlexibilityNo cancel fee	On-time67%

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$431+ Cheap flights from London (LON) to Ottawa (YOW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from London to Ottawa with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from London to Ottawa are usually found in January or February, booked 88 days in advance, depart on a Friday or Saturday and return on a Saturday

Cheap flight deals from London to Ottawa

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from London to Ottawa

Cheapest flights from London to OttawaExplore 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 April 17, 2025.

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 April 17, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from London to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Ottawa in April.

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.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from London to Ottawa. Price data was last updated on April 11, 2025.

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

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 April 17, 2025.

Rainfall in Ottawa by month

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

Temperature in Ottawa by month

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

Reviews of airlines servicing Ottawa

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?

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

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

What are the most reliable airlines from London to Ottawa?

What are the cheapest flights from London to Ottawa?

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

How can I find direct flights from London to Ottawa?

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

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

Traveling to a place near London?

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 London to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from London to Ottawa

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Travel Smart

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 April 17, 2025.