Cheap flights from Ottawa to San Francisco from C$ 198
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Ottawa to San Francisco are usually found in January or May, booked 85 days in advance, depart on a Thursday or Wednesday and return on a Friday
Cheap flight deals from Ottawa to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 June 2025.
Find flight deals from Ottawa to San Francisco
Cheapest flights from Ottawa to San FranciscoExplore the most affordable flight options available from Ottawa to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.
Explore the most affordable flight options available from Ottawa to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Ottawa to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 June 2025.
Use the filters below to find and compare flights from Ottawa to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 24/7
7:15 p.m.-1:59 p.m.
2 stops21h 44m
San Francisco
Sun 3/8
6:05 p.m.-6:45 a.m.
1 stop9h 40m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Tue 22/7
9:55 p.m.-10:33 a.m.
1 stop15h 38m
San Francisco
Tue 5/8
1:55 p.m.-1:35 a.m.
1 stop8h 40m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Fri 1/8
5:45 a.m.-11:59 p.m.
2 stops21h 14m
San Francisco
Sun 3/8
6:05 p.m.-6:45 a.m.
1 stop9h 40m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 23/7
5:55 a.m.-6:19 p.m.
2 stops15h 24m
San Francisco
Wed 30/7
6:05 p.m.-6:45 a.m.
1 stop9h 40m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Fri 1/8
7:00 a.m.-12:23 p.m.
1 stop8h 23m
San Francisco
Sun 3/8
1:25 p.m.-12:21 a.m.
1 stop7h 56m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 28/8
6:33 a.m.-5:46 p.m.
2 stops14h 13m
San Francisco
Sat 6/9
12:43 a.m.-2:13 p.m.
2 stops10h 30m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 13/8
12:20 p.m.-9:25 p.m.
2 stops12h 05m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 10/9
7:00 a.m.-12:23 p.m.
1 stop8h 23m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 8/9
6:00 a.m.-11:11 a.m.
1 stop8h 11m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 16/7
5:45 a.m.-5:20 p.m.
2 stops14h 35m
Best time to book a flight from Ottawa to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Ottawa with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ottawa to San Francisco
How far ahead should I book a flight from Ottawa to San Francisco?
Use this chart to determine the optimal time to book a round-trip flight from Ottawa to San Francisco. Price data was last updated on 9 June 2025.
Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Ottawa to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 276). Flying from Ottawa to San Francisco in December is currently the most expensive (average of C$ 368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from YOW to SFO?
Find hourly flight availability from Ottawa to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.
A simple way to save on the total cost of your ticket is to fly from Ottawa to San Francisco at noon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the evening.
What is the cheapest day to fly from Ottawa to San Francisco?
Use this chart to determine the cheapest time to fly round-trip from Ottawa to San Francisco. Price data was last updated on 16 December 2024.
Travelers seeking maximum savings on their Ottawa to San Francisco flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in San Francisco by month
Plan your trip to San Francisco by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 mm per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.
Temperature in San Francisco by month
Plan your trip to San Francisco by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 12 June 2025.
To help decide which airline to fly from Ottawa to San Francisco, see what other customers have to say about Porter Airlines, Delta and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Food
Boarding
Comfort
Entertainment
Crew
Reviews
Mary,Jun 2025
FLL - YYZ
Overall
Food
Boarding
Comfort
Entertainment
Crew
Reviews
Mary,Jun 2025
FLL - YYZ
Overall
Food
Boarding
Comfort
Entertainment
Crew
Reviews
Mary,Jun 2025
FLL - YYZ
Overall
Food
Boarding
Comfort
Entertainment
Crew
Reviews
Mary,Jun 2025
FLL - YYZ
Overall
Food
Boarding
Comfort
Entertainment
Crew
Reviews
Mary,Jun 2025
FLL - YYZ
Overall
Food
Boarding
Comfort
Entertainment
Crew
Reviews
Mary,Jun 2025
FLL - YYZ
Related info for your journey
Find useful and relevant information for your journey from Ottawa to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Fly from Ottawa to San Francisco on these airlines
Choose from the following airlines for your flight from Ottawa to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 12 June 2025.
Top 4 airlines flying from Ottawa to San Francisco
Discover the top 4 airlines that operate flights from Ottawa to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 June 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Ottawa to San Francisco?
When you search for this flight from Ottawa to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ottawa to San Francisco?
Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Ottawa to San Francisco with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to San Francisco flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Ottawa to San Francisco become cheaper?
Of course! You can now track prices for flights from Ottawa to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.