Cheap flights from Ottawa to London
Cheap return flights from Ottawa to London
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
London flight facts
What you need to know
What are the cheapest airlines?
- Air Canada
- WestJet
- British Airways
These airlines usually offer the cheapest flights from Ottawa to London.
What airlines fly indirectly?
- Air Transat
- Lufthansa
- KLM
These airlines fly from Ottawa to London, but you’ll have at least one layover.
How long is the flight?
7 hours 30 minutes
This is the shortest flight time from Ottawa to London.
Alternative flights from the UK to London
Check out prices for other routes
Alternative flights from Ottawa
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Ottawa/London route. There are around 35 flights on any given week from the UK to London and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Ottawa to London
Tips and advice from our flight experts
You've searched for flights from Ottawa to London. We've found 25 flights and compared them to give you the best offer. On average, Air Canada is the cheapest for this route, so look out for them. The cheapest offer we've found is a one-way ticket for Ottawa to London on 05/05/2026 at 08:35 at £49.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 5500 km flight from Ottawa to London.
To find the best offers, book at least 2-3 months in advance or look for last-minute deals. Consider flying with Air Canada, which is popular and offers an average duration of 7 hours 30 minutes. After selecting an offer, fill out your information, proceed to payment, and consider booking a hotel with us or using our flight + hotel service to save time and money.
Other popular destinations near London
Where other people are flying to
