S$1,034 Cheap Flights from Ottawa to London

Round-trip tickets from Ottawa Intl. Airport to London Heathrow start from S$927. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book today to avoid missing out. Prices and availability are subject to change. Additional terms apply.

Each air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for YOW to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.

You'll have 5,400 kilometres to cover on the long-haul Ottawa to Hounslow route. Wear layers of comfortable clothes and consider taking earplugs and a sleep mask.

If you want to fly straight from Ottawa Intl. Airport to LHR, you'll have to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly between these airports.

Last-minute bookings from Ottawa International Airport to Heathrow Airport can be hit-or-miss. You may be able to score a great bargain, but you could also miss out entirely! If you'd prefer to play it safe and start your trip planning early on, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines advertise their prices that far in advance. Our suggestion? Check back often as updates are made frequently.