Cheap Flights from London to Ottawa from $289

Frequently Asked Questions

• What are the cheapest flights from London to Ottawa (LON-YOW)?

  Based on Trip.com data, Air Transat offers one-way fares as low as $289 on Cheapest nonstop routes (e.g. LGW to YOW on Wed, Sep 2), while Air Transat offers Cheapest nonstop round-trips from $456 departing on Mon, Sep 14 and returning on Mon, Sep 21.

• Which airlines offer direct flights from London to Ottawa?

  At the moment, you can catch a nonstop flight from London to Ottawa with the following airlines, including: Air Transat Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from London (LON) to Ottawa (YOW) and what is the distance?

  It takes around 7 hours 56 minutes to fly from London (LON) to Ottawa (YOW).

• When is the best time to book flights from London to Ottawa?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Ottawa is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from London to Ottawa?

  Based on Trip.com data in the past 4 weeks, there is 11 flight per week flying from London to Ottawa. You can check the weekly schedule for popular airlines on this route below: Air Transat: -/M/-/-/T/-/S -- TS383 (10:39)

• How can I find the best deals on flights from London to Ottawa?

  To find best deals on flights from London to Ottawa, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Sep 2, with one-way flights priced at just $289.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Transat.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Ottawa travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from London (LON) to Ottawa (YOW) the cheapest?

  The cheapest months to fly from London to Ottawa is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from London to Ottawa on?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from London to Ottawa on August 31, 2026 with Air Transat, with prices starting at $406.

• Which airports can I fly to for Ottawa from London?

  You can land at any one of the following hubs in Ottawa, with London Gatwick Airport to Ottawa International Airport (LGW-YOW) is by far the most common option on this route: Ottawa International Airport (YOW) Gatineau-Ottawa Executive Airport (YND).

• Is there any time difference between London and Ottawa?

  The time difference between Ottawa and London is 5h.

• How do I change or cancel my ticket from London to Ottawa?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from London to Ottawa?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from London to Ottawa is $1,124. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from London to Ottawa?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from London to Ottawa is $1,115. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from London to Ottawa on Trip.com?

  Enter London and Ottawa, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the London to Ottawa route?

  Air Transat and easyJetare the most popular budget airlines flying from London to Ottawa. Check baggage, seat and payment fees before comparing the final price.