Cheap flights from Ottawa to San Francisco from C$ 246
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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
4 Jan — 11 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 January or May, booked 72 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 5 December 2025.
Wed 10/126:45 a.m.YOW - SFO
1 stop8h 55mPorter Airlines
Wed 17/121:40 p.m.SFO - YOW
1 stop8h 01mPorter Airlines
Deal found 3/12C$ 540
Wed 10/126:45 p.m.YOW - SFO
1 stop17h 45mMultiple Airlines
Wed 17/126:00 a.m.SFO - YOW
2 stops32h 13mMultiple Airlines
Deal found 3/12C$ 652
Thu 25/129:25 a.m.YOW - SFO
1 stop15h 21mMultiple Airlines
Thu 1/15:42 p.m.SFO - YOW
2 stops15h 58mMultiple Airlines
Deal found 4/12C$ 853
Fri 5/124:20 p.m.YOW - SFO
2 stops32h 30mMultiple Airlines
Sun 7/1210:15 a.m.SFO - YOW
1 stop25h 29mMultiple Airlines
Deal found 3/12C$ 892
Thu 25/127:45 a.m.YOW - SFO
1 stop10h 50mAir Canada
Tue 30/128:30 a.m.SFO - YOW
1 stop9h 48mAir Canada
Deal found 4/12C$ 934
Wed 17/1211:10 a.m.YOW - SFO
1 stop12h 00mUnited Airlines
Wed 24/1210:35 p.m.SFO - YOW
1 stop17h 17mUnited Airlines
Deal found 3/12C$ 966
Mon 22/126:15 a.m.YOW - SFO
1 stop12h 26mAir Canada
Mon 29/125:00 a.m.SFO - YOW
2 stops13h 18mAir Canada
Deal found 3/12C$ 976
Fri 19/126:00 a.m.YOW - SFO
2 stops14h 36mUnited Airlines
Mon 29/125:00 a.m.SFO - YOW
2 stops13h 18mUnited Airlines
Deal found 3/12C$ 984
Mon 22/126:45 p.m.YOW - SFO
1 stop17h 45mMultiple Airlines
Mon 29/128:43 a.m.SFO - YOW
2 stops36h 15mMultiple Airlines
Deal found 3/12C$ 985
Tue 16/126:00 a.m.YOW - SFO
1 stop9h 12mMultiple Airlines
Tue 30/128:44 p.m.SFO - YOW
1 stop17h 25mMultiple Airlines
Deal found 4/12C$ 988
Fri 19/127:45 a.m.YOW - SFO
1 stop10h 50mAir Canada
Tue 30/128:30 a.m.SFO - YOW
1 stop9h 48mAir Canada
Deal found 4/12C$ 991
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 5 December 2025.
Sun 3/56:00 a.m.YOW - SFO
1 stop8h 54mWestJet
Fri 8/512:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 3/12C$ 427
Fri 8/56:00 a.m.YOW - SFO
1 stop8h 54mWestJet
Sun 10/57:30 a.m.SFO - YOW
2 stops13h 52mWestJet
Deal found 4/12C$ 465
Fri 15/53:45 p.m.YOW - SFO
1 stop8h 39mWestJet
Sat 30/57:30 a.m.SFO - YOW
1 stop7h 55mWestJet
Deal found 3/12C$ 472
Thu 26/25:40 a.m.YOW - SFO
2 stops33h 30mWestJet
Thu 5/31:00 p.m.SFO - YOW
2 stops26h 23mWestJet
Deal found 3/12C$ 473
Sun 17/56:15 a.m.YOW - SFO
2 stops13h 59mWestJet
Sat 30/57:30 a.m.SFO - YOW
1 stop7h 55mWestJet
Deal found 3/12C$ 486
Wed 13/53:45 p.m.YOW - SFO
1 stop8h 39mWestJet
Thu 28/512:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 3/12C$ 486
Sun 17/56:00 a.m.YOW - SFO
1 stop8h 54mWestJet
Sun 31/56:05 p.m.SFO - YOW
1 stop9h 50mWestJet
Deal found 3/12C$ 486
Last-minute flights from Ottawa to San Francisco
Discover last-minute flight deals from Ottawa to San Francisco. Data last updated 5 December 2025 and is based on user searches.
Tue 13/16:00 a.m.YOW - SFO
1 stop9h 12mWestJet
Tue 3/21:00 p.m.SFO - YOW
2 stops32h 39mWestJet
Deal found 4/12C$ 455
Thu 22/16:00 a.m.YOW - SFO
1 stop9h 12mMultiple Airlines
Thu 29/110:15 a.m.SFO - YOW
1 stop25h 30mMultiple Airlines
Deal found 3/12C$ 394
Thu 22/16:00 a.m.YOW - SFO
1 stop9h 12mWestJet
Thu 5/21:00 p.m.SFO - YOW
1 stop8h 40mWestJet
Deal found 4/12C$ 413
Thu 22/16:00 a.m.YOW - SFO
1 stop9h 12mMultiple Airlines
Sun 8/210:15 a.m.SFO - YOW
1 stop30h 50mMultiple Airlines
Deal found 4/12C$ 431
Thu 22/16:00 a.m.YOW - SFO
1 stop9h 12mWestJet
Fri 6/21:00 p.m.SFO - YOW
1 stop8h 40mWestJet
Deal found 4/12C$ 433
Sat 24/15:40 a.m.YOW - SFO
2 stops13h 11mMultiple Airlines
Sun 8/210:15 a.m.SFO - YOW
1 stop30h 50mMultiple Airlines
Deal found 4/12C$ 445
Mon 26/15:40 a.m.YOW - SFO
2 stops33h 58mMultiple Airlines
Sun 8/210:15 a.m.SFO - YOW
1 stop30h 50mMultiple Airlines
Deal found 4/12C$ 440
Tue 27/16:00 a.m.YOW - SFO
1 stop9h 12mWestJet
Thu 5/21:00 p.m.SFO - YOW
1 stop8h 40mWestJet
Deal found 4/12C$ 374
Tue 27/16:00 a.m.YOW - SFO
1 stop9h 12mWestJet
Fri 6/21:00 p.m.SFO - YOW
1 stop8h 40mWestJet
Deal found 4/12C$ 442
Thu 29/15:45 p.m.YOW - SFO
1 stop21h 27mWestJet
Thu 5/21:00 p.m.SFO - YOW
1 stop8h 40mWestJet
Deal found 4/12C$ 447
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 5 December 2025.
Tue 3/36:45 a.m.YOW - SFO
1 stop8h 55mPorter Airlines
Deal found 3/12C$ 246
Wed 4/36:45 a.m.YOW - SFO
1 stop8h 55mPorter Airlines
Deal found 4/12C$ 248
Mon 2/36:45 a.m.YOW - SFO
1 stop8h 55mPorter Airlines
Deal found 2/12C$ 251
Mon 2/25:40 a.m.YOW - SFO
3 stops33h 58mMultiple Airlines
Deal found 4/12C$ 258
Tue 13/110:00 a.m.YOW - SFO
3 stops37h 46mMultiple Airlines
Deal found 5/12C$ 260
Tue 3/27:00 a.m.YOW - SFO
3 stops32h 38mMultiple Airlines
Deal found 4/12C$ 262
Mon 19/15:40 a.m.YOW - SFO
3 stops33h 58mMultiple Airlines
Deal found 4/12C$ 264
Tue 3/26:45 a.m.YOW - SFO
1 stop8h 55mPorter Airlines
Deal found 4/12C$ 274
Fri 10/47:15 a.m.YOW - SFO
1 stop9h 10mAir Canada
Deal found 4/12C$ 281
Mon 2/26:45 a.m.YOW - SFO
1 stop8h 55mPorter Airlines
Deal found 4/12C$ 282
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 5 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 5 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
Sun 3/5
6:00 a.m.-11:54 a.m.
1 stop8h 54m
San Francisco
Fri 8/5
12:50 p.m.-12:40 a.m.
1 stop8h 50m
C$ 427
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Fri 8/5
6:00 a.m.-11:54 a.m.
1 stop8h 54m
San Francisco
Sun 10/5
7:30 a.m.-12:22 a.m.
2 stops13h 52m
C$ 465
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Fri 15/5
3:45 p.m.-9:24 p.m.
1 stop8h 39m
San Francisco
Sat 30/5
7:30 a.m.-6:25 p.m.
1 stop7h 55m
C$ 472
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 26/2
5:40 a.m.-12:10 p.m.
2 stops33h 30m
San Francisco
Thu 5/3
1:00 p.m.-6:23 p.m.
2 stops26h 23m
C$ 473
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sun 17/5
6:15 a.m.-5:14 p.m.
2 stops13h 59m
San Francisco
Sat 30/5
7:30 a.m.-6:25 p.m.
1 stop7h 55m
C$ 486
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 13/5
3:45 p.m.-9:24 p.m.
1 stop8h 39m
San Francisco
Thu 28/5
12:50 p.m.-12:40 a.m.
1 stop8h 50m
C$ 486
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sun 17/5
6:00 a.m.-11:54 a.m.
1 stop8h 54m
San Francisco
Sun 31/5
6:05 p.m.-6:55 a.m.
1 stop9h 50m
C$ 486
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Tue 3/3
6:45 a.m.-12:40 p.m.
1 stop8h 55m
C$ 246
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 2/3
6:45 a.m.-12:40 p.m.
1 stop8h 55m
C$ 251
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 2/2
5:40 a.m.-12:38 p.m.
3 stops33h 58m
C$ 258
Flights are sorted by cheapest round-trip flights first.
Deals found on 3/12
Showing 1-10 of 16 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 28 November 2025.
Booking 72 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$ 307). Flying from Ottawa to San Francisco in October is currently the most expensive (average of C$ 371). 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 5 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 52% 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$ 458.
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 Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 20m.
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 5 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$ 427, WestJet can have you in San Francisco from Ottawa in 8h 54m. The distance from Ottawa to San Francisco is about 3925 km.
What are the cheapest airlines flying from Ottawa to San Francisco round-trip?
United Airlines, at C$ 337, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Porter Airlines and Air Canada. United Airlines is priced at 33% 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$ 205 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 Air Canada, with prices starting from C$ 211 and C$ 231, 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$ 307). Flying from Ottawa to San Francisco in October is currently the most expensive (average of C$ 371). 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 5 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 5 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 5 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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