The best pricing can be found in the month of December. Prices to Ottawa from Eugene average $387. You can even find prices in December for less than $387, as users have found deals to Ottawa from as low as $170. The month of July appears to be one of the more expensive times to travel to Ottawa from Eugene. Flying in the targeted month can save you up to 75%.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Eugene to Ottawa as you normally would.