Cheap Flights from San Francisco to Ottawa from $172

Frequently Asked Questions

• What are the cheapest flights from San Francisco to Ottawa (SFO-YOW)?

  Based on Trip.com data, WestJet offers one-way fares as low as $172 on Cheapest nonstop routes (e.g. SFO to YOW on Wed, Aug 5), while Delta Air Lines offers Cheapest nonstop round-trips from $404 departing on Fri, Jun 12 and returning on Wed, Jun 17.

• Which airlines offer direct flights from San Francisco to Ottawa?

  At the moment, you can catch a nonstop flight from San Francisco to Ottawa with the following airlines, including: Flair Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

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

  To find best deals on flights from San Francisco 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 Wed, Aug 5, with one-way flights priced at just $172.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is WestJet.
  · 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 July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from San Francisco (SFO) to Ottawa (YOW) the cheapest?

  The cheapest months to fly from San Francisco to Ottawa is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from San Francisco to Ottawa on?

  After crunching the numbers on our June flight calendar, it's currently cheapest to fly from San Francisco to Ottawa on June 29, 2026 with WestJet, with prices starting at $159.

• Which airports can I fly to for Ottawa from San Francisco?

  You can land at any one of the following hubs in Ottawa, with San Francisco International Airport to Ottawa International Airport (SFO-YOW) is by far the most common option on this route: Ottawa International Airport (YOW) Gatineau-Ottawa Executive Airport (YND).

• Is there any time difference between San Francisco and Ottawa?

  The time difference between Ottawa and San Francisco is 3h.

• How do I change or cancel my ticket from San Francisco to Ottawa?

  Tickets can only be changed or canceled 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.