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Flights from San Francisco to Ottawa

Search cheap flights from San Francisco to Ottawa in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$172, and round-trip tickets start at US$359.

      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Wed, Aug 19 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sat, Aug 22 | WestJet
        US$359 US$550
        35% off
        35% off
        US$550 US$359
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Thu, Aug 27 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sun, Aug 30 | WestJet
        US$374 US$550
        32% off
        32% off
        US$550 US$374
      • SFO 06:00
        8h 15m
        1 stop
        YOW 17:15
        San Francisco - Ottawa | Wed, Aug 26 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sun, Aug 30 | WestJet
        US$374 US$550
        32% off
        32% off
        US$550 US$374
      • SFO 06:00
        8h 15m
        1 stop
        YOW 17:15
        San Francisco - Ottawa | Sun, Aug 30 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Wed, Sep 2 | WestJet
        US$375
        32% off
        US$550 US$375
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Fri, Aug 28 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Wed, Sep 2 | WestJet
        US$375
        32% off
        US$550 US$375
      • SFO 06:00
        8h 15m
        1 stop
        YOW 17:15
        San Francisco - Ottawa | Thu, Sep 3 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sun, Sep 6 | WestJet
        US$384
        30% off
        US$550 US$384
      • SFO 18:05
        8h 30m
        1 stop
        YOW 05:35
        San Francisco - Ottawa | Sun, Aug 23 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sat, Aug 29 | WestJet
        US$385
        30% off
        US$550 US$385
      • SFO 06:00
        8h 15m
        1 stop
        YOW 17:15
        San Francisco - Ottawa | Sat, Aug 22 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sat, Aug 29 | WestJet
        US$385
        30% off
        US$550 US$385
      • SFO 06:00
        8h 15m
        1 stop
        YOW 17:15
        San Francisco - Ottawa | Mon, Aug 24 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Sun, Aug 30 | WestJet
        US$385
        30% off
        US$550 US$385
      • SFO 06:00
        8h 15m
        1 stop
        YOW 17:15
        San Francisco - Ottawa | Tue, Sep 1 | WestJet
        YOW 06:00
        9h
        1 stop
        SFO 12:00
        Ottawa - San Francisco | Fri, Sep 4 | WestJet
        US$385
        30% off
        US$550 US$385
      • SFO 13:00
        17h 25m
        1 stop
        YOW 14:00
        San Francisco - Ottawa | Tue, Jul 21 | Normal Airline
        YOW 15:00
        6h
        Nonstop
        SFO 16:00
        Ottawa - San Francisco | Thu, Jul 23 | Normal Airline
        Find more flights
        Find more flights
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Wed, Aug 5 | WestJet
        US$172 US$285
        40% off
        40% off
        US$285 US$172
      • SFO 18:05
        8h 30m
        1 stop
        YOW 05:35
        San Francisco - Ottawa | Thu, Aug 20 | WestJet
        US$184 US$285
        35% off
        35% off
        US$285 US$184
      • SFO 13:00
        8h 40m
        1 stop
        YOW 00:40
        San Francisco - Ottawa | Sun, Aug 16 | WestJet
        US$193 US$285
        32% off
        32% off
        US$285 US$193
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Tue, Jul 21 | WestJet
        US$193
        32% off
        US$285 US$193
      • SFO 18:05
        8h 30m
        1 stop
        YOW 05:35
        San Francisco - Ottawa | Wed, Aug 26 | WestJet
        US$193
        32% off
        US$285 US$193
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Fri, Aug 28 | WestJet
        US$194
        32% off
        US$285 US$194
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Tue, Aug 11 | WestJet
        US$195
        32% off
        US$285 US$195
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Thu, Jul 23 | WestJet
        US$197
        31% off
        US$285 US$197
      • SFO 18:05
        8h 30m
        1 stop
        YOW 05:35
        San Francisco - Ottawa | Fri, Aug 7 | WestJet
        US$198
        31% off
        US$285 US$198
      • SFO 06:00
        10h 20m
        1 stop
        YOW 19:20
        San Francisco - Ottawa | Wed, Sep 2 | WestJet
        US$199
        30% off
        US$285 US$199
      • SFO 13:00
        17h 25m
        1 stop
        YOW 14:00
        San Francisco - Ottawa | Tue, Jul 21 | Normal Airline
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        Find more flights

San Francisco to Ottawa Flight Details

The distance between San Francisco and Ottawa is about 3,928.72 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is September.

Cheapest one-way flight priceUS$172
Cheapest return ticket priceUS$359
Cheapest monthSeptember
Peak season for travelJuly
Flight distance3,928.72 km
Flight statistics for the San Francisco–Ottawa route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from San Francisco to Ottawa

Which month has the cheapest one-way flights from San Francisco to Ottawa?

Average monthly one-way flight prices from San Francisco to Ottawa, based on bookings made by Trip.com users over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from San Francisco to Ottawa is July, with an average price of US$149; while the month with the highest flight price is usually May, with an average price of up to US$720.

US$720
US$435
US$149
0
    Cheapest
  • US$172
    Mar
  • US$241
    Apr
  • US$720
    May
  • US$155
    Jun
  • US$149
    Jul
  • US$417
    Aug
  • US$582
    Sep
  • US$232
    Oct
  • US$257
    Nov
  • US$244
    Dec
  • US$375
    Jan
  • US$321
    Feb

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 US$172 on Cheapest nonstop routes (e.g. SFO to YOW on Wed, Aug 5), while WestJet offers Cheapest nonstop round-trips from US$359 departing on Wed, Aug 19 and returning on Sat, Aug 22.
  • 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.
  • 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 US$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.
  • The cheapest months to fly from San Francisco to Ottawa is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from San Francisco to Ottawa on July 20, 2026 with WestJet, with prices starting at US$398.
  • The time difference between Ottawa and San Francisco is 3h.
  • 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.

Trip.com Airline Insights on Flights from San Francisco to Ottawa

Which airline offers the cheapest direct flights from San Francisco to Ottawa?

Data is based on the average price of all nonstop flights from San Francisco to Ottawa on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, WestJet provides the lowest-priced direct flights from San Francisco to Ottawa, with fares starting at US$236.

US$179
US$236
US$293
US$350
US$407
WestJet
US$236
WestJet
United Airlines
US$331
United Airlines
Air Canada
US$359
Air Canada
Porter Airlines
US$407
Porter Airlines

Explore More Popular Flights

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.