Question 1

How far in advance should I book a flight to London Heathrow Airport?

Accepted Answer

You are more likely to see cheaper flights to London Heathrow Airport from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around C$ 1,060 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ottawa for as low as C$ 999 on momondo.

Question 2

What is the most punctual flight time for Ottawa to London flights?

Accepted Answer

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Question 3

Which airport is the most popular layover for flights between Ottawa and London Heathrow Airport?

Accepted Answer

Montreal (YUL) was the most common stop: 36% of momondo users choosing one-stop flights on this route connected there.

Question 4

Which layover airport has the shortest connection time from Ottawa to London Heathrow Airport?

Accepted Answer

Toronto (YYZ) has the shortest average layover time for this route: 2h 04m.

Question 5

What cabin class options are available on Ottawa to London Heathrow flights?

Accepted Answer

There are 3 cabin classes available to choose from on Ottawa to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 6

Can stopping save me money on Ottawa to London Heathrow Airport flights?

Accepted Answer

You could potentially save up to 54% on your flight if you consider stops on a Ottawa to London Heathrow Airport flight.

Question 7

How have Ottawa to London Heathrow Airport flight prices changed over time?

Accepted Answer

As of January 2026, prices for Ottawa to London Heathrow Airport flights are approximately 12% more expensive when compared to flights at the same time last year.

Question 8

Which airline has the best punctuality record on Ottawa to London flights?

Accepted Answer

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

Question 9

How often are flights from Ottawa to London delayed?

Accepted Answer

Historically, on average around 20% of flights between Ottawa and London have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

Question 10

Which airlines fly to London Heathrow Airport?

Accepted Answer

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to London Heathrow Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 65% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 10 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Question 11

Which layover airport offers the lowest fares from Ottawa to London Heathrow Airport?

Accepted Answer

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 1,001.

Question 12

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

Accepted Answer

Our data shows that the cheapest Ottawa to London Heathrow Airport flights are usually those with departure times in the evening. Our users have found flights to London Heathrow Airport in the evening for as low as C$ 1,103. In the afternoon is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,105 per ticket.

Question 13

What is the cheapest Ottawa to London Heathrow flight route?

Accepted Answer

Fly from Ottawa to London Heathrow for the best Ottawa - London Heathrow flight prices

Question 14

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Question 15

What is the cheapest month to fly to London Heathrow Airport?

Accepted Answer

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Ottawa, with most prices found around C$ 948. If you aren’t able to travel to London Heathrow Airport during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 988.

Question 16

How many flights depart from Ottawa to London Heathrow Airport on average per day?

Accepted Answer

As of January 2026, there are 3 flights per day flying from Ottawa to London Heathrow Airport. The most common time of day flights depart is 9:00p.m., with 100% of flights taking off in the evening.

Question 17

What is the cheapest airline that flies from Ottawa to London Heathrow?

Accepted Answer

WestJet is the most popular carrier operating from Ottawa to London Heathrow

Question 18

How many flights depart from Ottawa to London Heathrow Airport on average per week?

Accepted Answer

The number of flights available between Ottawa and London Heathrow Airport is 21 per week as of January 2026. The most frequent departure day is Fri, with 38% of weekly flights leaving on this day.

Question 19

Which layover airport has the shortest travel time from Ottawa to London Heathrow Airport?

Accepted Answer

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 9h 40m.

Question 20

What is the cheapest day to depart on your flight to London Heathrow Airport?

Accepted Answer

According to our data, Tuesday is the cheapest day to fly to London Heathrow Airport from Ottawa. The lowest ticket price found for a Tuesday departure recently was C$ 1,071. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London Heathrow Airport for around C$ 1,184.

Question 21

When did momondo last update prices for flights from Ottawa Airport to London Heathrow Airport?

Accepted Answer

Prices for flights from Ottawa Airport to London Heathrow Airport were last updated today.

Question 22

How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?

Accepted Answer

As of January 2026, there are 5 operators available to choose from for flights from Ottawa Airport to London Heathrow Airport.

Question 23

How old do you have to be to fly from Ottawa Airport to London Heathrow Airport?

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to London Heathrow Airport.

Question 24

What documentation or ID do you need to fly to London Heathrow Airport?

Accepted Answer

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best price found	C$ 1,083
Fastest flight time	6h 25m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom C$ 752	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Air France	PriceFrom C$ 772	Free Cancellation	Rating 7.4 1,524 reviews	Search Air France flights
United Airlines	PriceFrom C$ 895	Free Cancellation	Rating 7.4 9,180 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 904	Free Cancellation	Rating 7.1 10,637 reviews	Search Air Canada flights
Lufthansa	PriceFrom C$ 944	Free Cancellation	Rating 6.8 7,732 reviews	Search Lufthansa flights

Cheap flights from Ottawa to London from C$ 382

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to London departing on 23/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Ottawa to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest Ottawa to London Heathrow flight route?

Fly from Ottawa to London Heathrow for the best Ottawa - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

What cabin class options are available on Ottawa to London Heathrow flights?

There are 3 cabin classes available to choose from on Ottawa to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ottawa to London Heathrow Airport flights?

You could potentially save up to 54% on your flight if you consider stops on a Ottawa to London Heathrow Airport flight.

How have Ottawa to London Heathrow Airport flight prices changed over time?

As of January 2026, prices for Ottawa to London Heathrow Airport flights are approximately 12% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Ottawa to London Heathrow?

WestJet is the most popular carrier operating from Ottawa to London Heathrow

Which airlines fly to London Heathrow Airport?

How often are flights from Ottawa to London delayed?

Historically, on average around 20% of flights between Ottawa and London have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

What is the most punctual flight time for Ottawa to London flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ottawa to London flights?

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Ottawa and London Heathrow Airport?

Montreal (YUL) was the most common stop: 36% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ottawa to London Heathrow Airport?

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 1,001.

Which layover airport has the shortest travel time from Ottawa to London Heathrow Airport?

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 9h 40m.

Which layover airport has the shortest connection time from Ottawa to London Heathrow Airport?

Toronto (YYZ) has the shortest average layover time for this route: 2h 04m.

How many flights depart from Ottawa to London Heathrow Airport on average per day?

As of January 2026, there are 3 flights per day flying from Ottawa to London Heathrow Airport. The most common time of day flights depart is 9:00p.m., with 100% of flights taking off in the evening.

How many flights depart from Ottawa to London Heathrow Airport on average per week?

The number of flights available between Ottawa and London Heathrow Airport is 21 per week as of January 2026. The most frequent departure day is Fri, with 38% of weekly flights leaving on this day.

When to book flights from Ottawa to London Heathrow Airport

Cheap Ottawa to London Heathrow Airport (YOW to LHR) flight deals and tips

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How far is Ottawa to London Heathrow by plane?

When did momondo last update prices for flights from Ottawa Airport to London Heathrow Airport?

How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?

How old do you have to be to fly from Ottawa Airport to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

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What is the most popular airline from Ottawa to London Heathrow Airport?

Best airlines flying from Ottawa to London Heathrow Airport

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