Cheap flights from Ottawa to San Francisco from C$ 222
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 24/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
24 Jan — 31 Jan1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to San Francisco are usually found in May or April, booked 83 days in advance, depart on a Thursday or Wednesday and return on a Friday
Cheap flight deals from Ottawa to San Francisco
Enter your travel dates to find the best prices.
Cheapest flights from Ottawa to San Francisco
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 25 December 2025.
Sun 28/129:45 a.m.YOW - SFO
1 stop12h 34mUnited Airlines
Thu 1/15:00 a.m.SFO - YOW
1 stop13h 18mUnited Airlines
Deal found 24/12C$ 1,266
Fri 26/126:15 a.m.YOW - SFO
1 stop8h 55mUnited Airlines
Sun 28/1210:35 a.m.SFO - YOW
1 stop7h 43mUnited Airlines
Deal found 24/12C$ 1,552
Sun 28/126:45 a.m.YOW - SFO
1 stop8h 55mMultiple Airlines
Thu 1/16:18 p.m.SFO - YOW
3 stops25h 11mMultiple Airlines
Deal found 24/12C$ 1,563
Thu 25/127:27 p.m.YOW - SFO
2 stops15h 13mUnited Airlines
Fri 26/1212:55 p.m.SFO - YOW
1 stop7h 59mUnited Airlines
Deal found 25/12C$ 1,658
Fri 26/128:40 a.m.YOW - SFO
3 stops27h 50mMultiple Airlines
Sun 28/1210:15 a.m.SFO - YOW
2 stops19h 10mMultiple Airlines
Deal found 24/12C$ 2,147
Thu 25/125:45 p.m.YOW - SFO
2 stops21h 36mWestJet
Fri 26/124:55 p.m.SFO - YOW
2 stops28h 45mWestJet
Deal found 25/12C$ 2,443
Best flights from Ottawa to San Francisco
Discover carefully curated flight deals from Ottawa to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 25 December 2025.
Tue 26/53:45 p.m.YOW - SFO
1 stop8h 39mWestJet
Mon 1/612:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 24/12C$ 412
Sat 9/56:00 a.m.YOW - SFO
1 stop8h 54mWestJet
Sat 16/56:05 p.m.SFO - YOW
1 stop9h 50mWestJet
Deal found 22/12C$ 436
Sun 10/53:45 p.m.YOW - SFO
1 stop8h 39mWestJet
Sat 16/512:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 22/12C$ 440
Sat 9/56:00 a.m.YOW - SFO
1 stop8h 54mWestJet
Fri 15/512:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 22/12C$ 462
Sun 10/53:45 p.m.YOW - SFO
1 stop8h 39mWestJet
Fri 15/512:50 p.m.SFO - YOW
2 stops13h 38mWestJet
Deal found 22/12C$ 466
Last-minute flights from Ottawa to San Francisco
Discover last-minute flight deals from Ottawa to San Francisco. Data last updated 25 December 2025 and is based on user searches.
Sun 11/17:00 a.m.YOW - SFO
2 stops57h 24mMultiple Airlines
Thu 15/110:15 a.m.SFO - YOW
1 stop25h 30mMultiple Airlines
Deal found 23/12C$ 604
Tue 13/16:45 a.m.YOW - SFO
1 stop8h 58mPorter Airlines
Sun 1/21:45 p.m.SFO - YOW
1 stop7h 58mPorter Airlines
Deal found 24/12C$ 528
Tue 13/15:40 a.m.YOW - SFO
2 stops15h 58mDelta
Sun 1/25:45 a.m.SFO - YOW
2 stops15h 54mDelta
Deal found 23/12C$ 655
Tue 13/16:00 a.m.YOW - SFO
1 stop9h 12mWestJet
Sun 1/21:00 p.m.SFO - YOW
2 stops26h 23mWestJet
Deal found 24/12C$ 665
Thu 29/15:40 a.m.YOW - SFO
1 stop10h 03mMultiple Airlines
Wed 4/27:55 p.m.SFO - YOW
2 stops39h 50mMultiple Airlines
Deal found 23/12C$ 531
Fri 30/16:00 a.m.YOW - SFO
1 stop9h 12mMultiple Airlines
Mon 2/21:45 p.m.SFO - YOW
1 stop7h 58mMultiple Airlines
Deal found 24/12C$ 522
Fri 30/16:45 a.m.YOW - SFO
1 stop8h 58mPorter Airlines
Mon 2/21:45 p.m.SFO - YOW
1 stop7h 58mPorter Airlines
Deal found 23/12C$ 535
One-way flights from Ottawa to San Francisco
Search for one-way flight options from Ottawa to San Francisco. Find affordable one-way fares based on user searches. Data last updated 25 December 2025.
Tue 24/36:45 a.m.YOW - SFO
1 stop9h 00mPorter Airlines
Deal found 23/12C$ 222
Mon 23/27:15 p.m.YOW - SFO
2 stops19h 55mWestJet
Deal found 24/12C$ 235
Mon 23/35:40 a.m.YOW - SFO
2 stops33h 30mWestJet
Deal found 23/12C$ 250
Mon 23/36:45 a.m.YOW - SFO
1 stop9h 00mPorter Airlines
Deal found 23/12C$ 267
Mon 26/15:40 a.m.YOW - SFO
2 stops33h 32mWestJet
Deal found 25/12C$ 268
Thu 22/15:45 p.m.YOW - SFO
1 stop21h 27mWestJet
Deal found 23/12C$ 272
Tue 24/25:40 a.m.YOW - SFO
3 stops39h 40mMultiple Airlines
Deal found 25/12C$ 274
Mon 23/27:00 a.m.YOW - SFO
3 stops42h 01mMultiple Airlines
Deal found 24/12C$ 276
Sun 25/14:15 p.m.YOW - SFO
3 stops28h 39mMultiple Airlines
Deal found 24/12C$ 282
Mon 26/15:40 a.m.YOW - SFO
3 stops30h 07mMultiple Airlines
Deal found 25/12C$ 286
Find 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 25 December 2025.
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 25 December 2025.
Use the filters below to find and compare flights from Ottawa to San Francisco that are best for you.
Fly from
Ottawa
Fly to
San Francisco
Route
Depart
Return
Price
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Tue 26/5
3:45 p.m.-9:24 p.m.
1 stop8h 39m
San Francisco
Mon 1/6
12:50 p.m.-12:40 a.m.
1 stop8h 50m
C$ 412
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sat 9/5
6:00 a.m.-11:54 a.m.
1 stop8h 54m
San Francisco
Sat 16/5
6:05 p.m.-6:55 a.m.
1 stop9h 50m
C$ 436
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sun 10/5
3:45 p.m.-9:24 p.m.
1 stop8h 39m
San Francisco
Sat 16/5
12:50 p.m.-12:40 a.m.
1 stop8h 50m
C$ 440
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sat 9/5
6:00 a.m.-11:54 a.m.
1 stop8h 54m
San Francisco
Fri 15/5
12:50 p.m.-12:40 a.m.
1 stop8h 50m
C$ 462
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sun 10/5
3:45 p.m.-9:24 p.m.
1 stop8h 39m
San Francisco
Fri 15/5
12:50 p.m.-5:28 a.m.
2 stops13h 38m
C$ 466
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Tue 24/3
6:45 a.m.-12:45 p.m.
1 stop9h 00m
C$ 222
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 23/3
5:40 a.m.-12:10 p.m.
2 stops33h 30m
C$ 250
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 23/3
6:45 a.m.-12:45 p.m.
1 stop9h 00m
C$ 267
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 22/1
5:45 p.m.-12:12 p.m.
1 stop21h 27m
C$ 272
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Tue 24/2
5:40 a.m.-6:20 p.m.
3 stops39h 40m
C$ 274
Flights are sorted by cheapest round-trip flights first.
Deals found on 23/12
Showing 1-10 of 15 results
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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.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ottawa to San Francisco
Prices
More
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 19 December 2025.
Booking 83 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, April is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 298). Flying from Ottawa to San Francisco in December is currently the most expensive (average of C$ 401). 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 25 December 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 8% 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.
What’s the top layover airport for flights from Ottawa to San Francisco?
Share of one-stop round-trip flights from Ottawa to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.
Toronto (YYZ) – chosen by Cheapflights users on 54% of one-stop itineraries from Ottawa to San Francisco on Cheapflights.
What’s the cheapest layover airport for flights from Ottawa to San Francisco?
Average round-trip fare for 1-stop flights from Ottawa to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 446.
What’s the fastest layover option from Ottawa to San Francisco?
Shortest average travel time for 1-stop one-way flights from Ottawa to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 8h 16m.
Which airport typically offers the quickest layover for flights from Ottawa to San Francisco?
Average layover duration for 1-stop one-way flights from Ottawa to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 04m.
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 25 December 2025.
Get a feel of what it's like to fly with Porter Airlines,United Airlines, andWestJet from Ottawa to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
It's good. Planes are new and fresh. WiFi is best and stands out
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.
How long is the flight from Ottawa to San Francisco?
For as low as C$ 412, WestJet can have you in San Francisco from Ottawa in 8h 39m. The distance from Ottawa to San Francisco is about 3925 km.
What are the cheapest airlines flying from Ottawa to San Francisco round-trip?
Porter Airlines, at C$ 320, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include WestJet and United Airlines. Porter Airlines is priced at 35% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Ottawa to San Francisco one-way?
C$ 204 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and United Airlines, with prices starting from C$ 207 and C$ 229, respectively.
Can I find deals for flights from Ottawa to San Francisco that include hotel bookings?
Yes. In addition to deals on Ottawa to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to San Francisco.
Can I find deals for business class flights from Ottawa to San Francisco?
Yes. Cheapflights offers flight deals from Ottawa to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ottawa to San Francisco?
Currently, April is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 298). Flying from Ottawa to San Francisco in December is currently the most expensive (average of C$ 401). 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.
Book flights to San Francisco if you plan to visit one of these locations
Richmond
Newark
Redwood City
Burlingame
South San Francisco
Scotts Valley
Novato
Santa Clara
Vallejo
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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 25 December 2025.
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 25 December 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 25 December 2025.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
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.
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