Cheap flights from Ottawa to London Heathrow Airport from $318
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 Heathrow Airport departing on 6/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Ottawa to London
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
SWISS flights from Ottawa to London Heathrow Airport
Our best SWISS deals on Ottawa to London Heathrow Airport flight tickets
United Airlines flights from Ottawa to London Heathrow Airport
Our best United Airlines deals on Ottawa to London Heathrow Airport flight tickets
See travel insights to London from
How to get the cheapest flight ticket from Ottawa to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London Heathrow Airport?
The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Ottawa, with most prices found around $700. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from Ottawa to London Heathrow Airport during January average around $706.
What is the cheapest day to depart on your flight to London Heathrow Airport?
Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $772. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $897.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Ottawa to London Heathrow Airport in the evening for as low as $821. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $891.
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?
You are more likely to see cheaper flights to London Heathrow Airport from Ottawa when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $793 when searching 12 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 $717 on momondo.
What cabin class options are available on Ottawa to London Heathrow flights?
There are 1 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.
What is the cheapest airline that flies from Ottawa to London Heathrow?
Aer Lingus, WestJet, and Air Canada are the most popular carriers operating from Ottawa to London Heathrow
What airlines fly to London Heathrow Airport?
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 62% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 5 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ottawa to London Heathrow Airport on average per day?
As of April 2025, there are 3 flights per day flying from Ottawa to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.
How many flights depart from Ottawa to London Heathrow Airport on average per week?
As of April 2025, there are 26 flights per week flying from Ottawa to London Heathrow Airport. The most common day of the week flights depart is Mon, with 27% of flights taking off 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
Find info about flight duration, direct flights, and airports for your flight from Ottawa to London Heathrow Airport
How far is Ottawa to London Heathrow by plane?
Ottawa and London Heathrow are 3317.2 mi apart from one another. By plane, this route typically takes 6h 35m.
When did momondo last update prices for flights from Ottawa Airport to London Heathrow Airport?
Prices for flights from Ottawa Airport to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?
As of April 2025, there are 3 operators available to choose from 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?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ottawa Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
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.
What is the most popular plane model from Ottawa to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ottawa to London Heathrow Airport is Boeing 787-9 Dreamliner (80.36% of total bookings). The next most popular plane models are Airbus A330-200 (5.36%), Airbus A350-1000 (3.57%), and Boeing 777-300ER (3.57%).
What is the most popular airline from Ottawa to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Ottawa to London Heathrow Airport is Air Canada, representing 79% of all bookings. The subsequent popular airlines are Lufthansa at 13% and Air France at 8%.
Best airlines flying from Ottawa to London Heathrow Airport
Compare and see reviews for airlines that fly from Ottawa to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $454 | Free Cancellation | Rating 7.5 1,435 reviews | |||
| PriceFrom $619 | Free Cancellation | Rating 6.7 7,009 reviews | |||
| PriceFrom $704 | Free Cancellation | Rating 7.0 9,134 reviews |
Air Canada Flights From Ottawa to London Heathrow Airport
Across 4 Air Canada flights from Ottawa to London Heathrow Airport this week, the average price was $854, with the best Air Canada deals starting from $704 round-trip. 9,134 users have rated Air Canada on momondo, with an average score of 7.0/10.
Lufthansa Flights From Ottawa to London Heathrow Airport
Lufthansa is also a popular choice for this route. Lufthansa flight deals for Ottawa to London Heathrow Airport start from as low as $619 round-trip, depending on your selected dates, with average Lufthansa deals seen on momondo around $745. Lufthansa operates 3 flights to London Heathrow Airport from Ottawa in an average week. Users have rated it 6.7/10 across 7,009 reviews.
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ottawa to London?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Ottawa.
Can I find flights from Ottawa to London with flexible booking policies on momondo?
Yes. All flights to London from Ottawa on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Ottawa to London?
momondo provides multiple filters to help you find the best flight to London from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Ottawa to London right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Ottawa to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.