When is the cheapest time to fly from Ottawa to London?

The most competitive fares on the Ottawa–London route appear during the spring shoulder season (April to May) and early fall (September to October), avoiding summer peak and Christmas holiday surcharges. Booking 45–60 days in advance is the sweet spot for maximizing savings, and being flexible by even ±3 days can uncover additional deals.

Which airlines operate flights from Ottawa (YOW) to London (LHR)?

Key carriers on this route include Air Canada and Air Transat. Depending on your choice of airline and fare class, you'll experience direct seasonal service or connections via Toronto (YYZ) or Montreal (YUL). Total journey time including any connections runs approximately 7 to 10 hours.

Which airports are used for flights from Ottawa to London?

Your flight departs from Ottawa Macdonald–Cartier International Airport (YOW). You will land at London Heathrow (LHR) or Gatwick (LGW) in United Kingdom. We recommend arriving at the departure terminal at least 2.5–3 hours before your scheduled international departure.

Is $800 CAD a competitive price for this route?

A fare starting at $800 CAD from the National Capital Region to London is a strong entry-level price for this corridor. Exact pricing is dynamic and changes based on cabin class, airline policy, and how close to departure you book. SkyTeam Travel's agents can often access unpublished wholesale fares below this level — call us to check availability.

Is it better to book flights to London through a travel agent?

Yes, especially for securing seats on the most competitive carriers. Our agents can check multiple inventory systems simultaneously and flag unadvertised promotions that often disappear within hours of being released.

flight_takeoff from $800 CAD

Flights from Ottawa to London

Departing from Ottawa Macdonald–Cartier, your journey to United Kingdom is seamless with SkyTeam Travel. We compare exclusive fares on carriers like Air Canada and Air Transat. Whether you prefer direct seasonal service or connections via Toronto (YYZ) or Montreal (YUL), we find the fastest routes so you can start exploring the historic streets of London sooner.

flight_takeoff

From

flight_land

calendar_month

Depart

calendar_today

Return

Travelers & Class

Adults

Age 12+

Children

Age 2-11

Cabin Class

Quick Answer: The cheapest flights from Ottawa (YOW) to London (LHR) currently start at $800 CAD. Typical flight times average around 7 to 10 hours. You'll fly out of Ottawa Macdonald–Cartier International Airport (YOW) and arrive at London Heathrow (LHR) or Gatwick (LGW). Search our live inventory above for unpublished deals on Air Canada and Air Transat.

warning

Limited Seats Available

Only 4 seats remaining at this price. Fares change dynamically.

call Call Now chat WhatsApp

5.0 ★ on Google

256+ verified reviews

Licensed Agency

Registered Canadian travel agency

24/7 Support

Canadian-based agents

Secure Booking

PCI-DSS protected payments

More Flights from Ottawa

Fly to London from

Flying to London from Ottawa (YOW)

Ottawa Macdonald–Cartier (YOW) serves the National Capital Region with strong feeder service to Toronto and Montreal plus select transatlantic departures. From Ottawa and Gatineau, the smartest itineraries usually route through YYZ or YUL, and our agents compare every connection to keep your total journey time and fare down.

Typical airlines

Air Canada and Air Transat

Routing

Direct seasonal service or connections via Toronto (YYZ) or Montreal (YUL)

Journey time

7 to 10 hours

London Travel Guide for Canadian Flyers

From the Tower of London and Westminster to the West End and day trips to Europe, London is one of Canada's most-booked transatlantic cities.

Visa & entry for Canadians

Canadians can visit the UK visa-free for up to six months but, from 2025, must obtain an Electronic Travel Authorisation (ETA) before flying. It's a quick online application — apply well ahead of departure.

Best time to fly

May, June and September deliver the best mix of mild weather and value. July–August is peak season; book early. Winter fares dip but daylight is short.

Where to stay & airports

Heathrow (LHR) is the main gateway with the widest schedule; Gatwick (LGW) often carries lower fares. Central zones near the Underground keep sightseeing easy.

Baggage tip

Transatlantic economy fares vary widely on checked-bag inclusions. We confirm the exact allowance and flag fare classes that include a free checked bag.

Entry requirements and baggage rules change often — confirm current details with our agents or the official authorities before you travel.

Prefer that we call you?

Leave your number and an agent will call you back with the best available fare — no obligation.

Or call us now at +1 (778) 312-2390 — 24/7.