When travelling by train, never forget to keep your ticket with you: make sure to print it out in advance or to download the mobile version if allowed.
If you don't feel like spending many hours in a train, you can consider travelling by plane. Especially if you have the possibility to book in advance, flying to London, Ontario can be definitely cheap.
Which stations do the trains to London, Ontario leave from?
You can take the train to London, Ontario at OTTAWA, which arrives at LONDON.
How many train connections exist to go from Ottawa to London, Ontario per day?
How long will it take you from Ottawa to London, Ontario by train and when do the trains leave?
With the fastest connections you will be in London, Ontario in 7 hours and 15 minutes, but on average it takes 9 hours and 6 minutes. The first train headed to London, Ontario is at 10:09, while the last one leaves Ottawa at 14:09.