Cheap Flights from Portland to Ottawa from S$ 190

Frequently Asked Questions

• Which airlines offer the cheapest flights from Portland (PWM) to Ottawa (YOW)?

  Based on Trip.com data, United Airlines offers one-way fares as low as S$ 190 on Cheapest nonstop routes (e.g. PWM to YOW on Sun, Jan 11), while United Airlines offers Cheapest nonstop round-trips from S$ 421 departing on Tue, Dec 23 and returning on Tue, Dec 30.

• When is the best time to book flights from Portland to Ottawa?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to Ottawa is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Portland to Ottawa?

  To find best deals on flights from Portland to Ottawa, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Jan 11, with one-way flights priced at just S$ 190.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Ottawa travel is around August.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Portland to Ottawa to get the best price?

  The cheapest months to fly from Portland to Ottawa is December, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Portland to Ottawa?

  After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Portland to Ottawa on December 23, 2025 with United Airlines, with prices starting at S$ 420.

• What is the time difference between Portland and Ottawa?

  The time difference between Ottawa and Portland is 0h.

• How can I change or cancel my flight ticket from Portland to Ottawa?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.