Q: How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?

Airfare is below average for this route at the moment. Ottawa to London Heathrow Airport flights typically cost between C$ 989 and C$ 1,201 in October. The cheapest round-trip price found within the last 3 days was C$ 973 on Air Canada (19 Oct-26 Oct).

Question 1

What’s the fastest layover option from Ottawa to London Heathrow Airport?

Accepted Answer

Flights via Paris (CDG) have the shortest average one-way travel time for 1-stop routes: 3h 25m.

Question 2

Which airport typically offers the quickest layover for flights from Ottawa to London Heathrow Airport?

Accepted Answer

Flights via Newark (EWR) offer the fastest connection on this route, with an average layover time of 2h 11m.

Question 3

What’s the top layover airport for flights from Ottawa to London Heathrow Airport?

Accepted Answer

Paris (CDG) – chosen by Cheapflights users on 44% of one-stop itineraries from Ottawa to London Heathrow Airport on Cheapflights.

Question 4

How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?

Accepted Answer

Airfare is below average for this route at the moment.Ottawa to London Heathrow Airport flights typically cost between C$ 989 and C$ 1,201 in October.
The cheapest round-trip price found within the last 3 days was C$ 973 on Air Canada (19 Oct-26 Oct).

Question 5

What’s the cheapest layover airport for flights from Ottawa to London Heathrow Airport?

Accepted Answer

Paris (CDG) is the most affordable 1-stop option, with an average round-trip price of C$ 1,005.

Question 6

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

Accepted Answer

Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 973. Other airlines that can offer you cheap pricing are United Airlines, from C$ 997, and Lufthansa, from C$ 1,007. Air Canada is 8% cheaper than the average price of flights available within the next 90 days to this destination.

Question 7

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

Accepted Answer

The best time to book flights from Ottawa to London Heathrow Airport is 20 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 8

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 560). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 857). 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.

Question 9

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

Accepted Answer

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

Question 10

E

Accepted Answer

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

Question 11

E

Accepted Answer

If weather is an important factor for your trip to London Heathrow Airport, 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).

Question 12

What are the cheapest flights from Ottawa to London Heathrow Airport?

Accepted Answer

On average you can expect to pay C$ 1,095 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 469 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 882.

Question 13

What are the most reliable airlines from Ottawa to London Heathrow Airport?

Accepted Answer

The top 3 most reliable airlines when flying from Ottawa to London Heathrow Airport are Air Canada (74%), Aegean Airlines (74%) and Austrian Airlines (74%).

Question 14

What are the most popular airlines that fly from Ottawa to London Heathrow Airport?

Accepted Answer

When booking a flight from Ottawa to London Heathrow Airport, you may want to consider flying on Air Canada, Air France or KLM as they are the most popular for this route.

Question 15

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

Accepted Answer

Thursday is generally a great day to depart. Flying on this day could help you save up to 18%.

Question 16

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

Accepted Answer

Find a great deal and save up to 4% by booking at least 36 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 Ottawa to London Heathrow Airport within the next two weeks, with the cheapest ticket starting at C$ 941.

Question 17

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

Accepted Answer

February is one of the best times of the year to fly to London Heathrow Airport from Ottawa. Prices for February average C$ 1,036 per person but you can even find prices for as low as C$ 788. The most expensive prices can be found in the month of December. Opting for a February flight can save you 24% on your journey compared to booking in December

Question 18

What is the cheapest time of day to fly from YOW to LHR?

Accepted Answer

It’s typically best to fly out from Ottawa to London Heathrow Airport in the morning. Doing so could potentially save you 3% on the flight price compared to flying in the afternoon, which is usually more expensive.

Question 19

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

Accepted Answer

Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 3 outbound flights to London Heathrow per day from 6 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

Question 20

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

Accepted Answer

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

Question 21

How can I find direct flights from Ottawa to Heathrow?

Accepted Answer

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

Question 22

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

Accepted Answer

Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 23

How does Cheapflights help users find flights from Ottawa to Heathrow?

Accepted Answer

When you search for this flight from Ottawa to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 24

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

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 25

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

Accepted Answer

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

Question 26

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

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	C$ 973
One-way from	C$ 369
Popular in	December
Cheapest in	February
Average price	C$ 1,174
Good round-trip deal	C$ 1,092 or less
Good one-way deal	C$ 792 or less

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	CheapestC$ 726	AverageC$ 816	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air France	CheapestC$ 726	AverageC$ 904	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	CheapestC$ 823	AverageC$ 1,219	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	CheapestC$ 891	AverageC$ 982	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 898	AverageC$ 1,047	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 949	AverageC$ 1,053	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Cheap flights from Ottawa to London Heathrow Airport from C$ 369

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 24/10. 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 Heathrow are usually found in February or January, booked 20 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Ottawa to Heathrow

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Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to HeathrowExplore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 July 2025.

Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 July 2025.

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

Best time to book a flight from Ottawa to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Heathrow. Price data was last updated on 25 July 2025.

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

What is the cheapest time of day to fly from YOW to LHR?

Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 July 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Heathrow. Price data was last updated on 16 December 2024.

How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?

What’s the top layover airport for flights from Ottawa to London Heathrow Airport?

Share of one-stop round-trip flights from Ottawa to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Ottawa to London Heathrow Airport?

Average round-trip fare for 1-stop flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Ottawa to London Heathrow Airport?

Shortest average travel time for 1-stop one-way flights from Ottawa to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Ottawa to London Heathrow Airport?

Average layover duration for 1-stop one-way flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Heathrow

Related info for your journey

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

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

What are the most reliable airlines from Ottawa to London Heathrow Airport?

What are the cheapest flights from Ottawa to London Heathrow Airport?

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

How can I find direct flights from Ottawa to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

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Fly from Ottawa to Heathrow on these airlines

Choose from the following airlines for your flight from Ottawa to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 28 July 2025.

Top 6 airlines flying from Ottawa to Heathrow

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How does Cheapflights help users find flights from Ottawa to Heathrow?

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

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

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Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 July 2025.