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$166+ Cheap flights from Ottawa (YOW) to San Francisco (SFO)

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Find cheap flights from Ottawa to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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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 Wednesday

Cheap flight deals from Ottawa to San Francisco

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 December 8, 2025.

This oojo deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amYOW - SFO
1 stop9h 12mWestJet
Thu 12/111:00 pmSFO - YOW
1 stop8h 40mWestJet
Deal found 12/6$493
This Kiwi.com deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:55 pmYOW - SFO
2 stops19h 28mMultiple Airlines
Thu 1/81:00 pmSFO - YOW
1 stop8h 40mMultiple Airlines
Deal found 12/7$499
This Kiwi.com deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/74:20 pmYOW - SFO
2 stops59h 04mMultiple Airlines
Sun 12/1410:15 amSFO - YOW
1 stop25h 29mMultiple Airlines
Deal found 12/7$659
This Air Canada deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:45 amYOW - SFO
1 stop10h 50mAir Canada
Mon 12/292:30 pmSFO - YOW
1 stop8h 08mAir Canada
Deal found 12/7$702
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 amYOW - SFO
1 stop12h 34mUnited Airlines
Thu 1/89:20 pmSFO - YOW
1 stop14h 07mUnited Airlines
Deal found 12/7$707
This Air Canada deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:09 pmYOW - SFO
1 stop19h 03mAir Canada
Mon 12/292:30 pmSFO - YOW
1 stop8h 08mAir Canada
Deal found 12/6$721
This Air Canada deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:00 amYOW - SFO
2 stops18h 29mAir Canada
Mon 12/298:30 amSFO - YOW
1 stop7h 48mAir Canada
Deal found 12/7$726

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 December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$284
(Kiwi.com)

One-way from

$166
(FlightHub)

Popular in

December

Cheapest in

May

Average price

$521
Provider with most accurate pricing for Ottawa-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ottawa-San Francisco flights.
Search Deals
From Ottawa to San Francisco
Search Deals
One-way flight from Ottawa to San Francisco
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 2,558,603 searches. Data last updated December 8, 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 1/13

6:00 am-12:12 pm

1 stop9h 12m

San Francisco

Sun 2/1

10:15 am-2:45 pm

1 stop25h 30m

$284

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 1/19

5:45 pm-12:12 pm

1 stop21h 27m

San Francisco

Sun 1/25

10:15 am-2:45 pm

1 stop25h 30m

$313

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 2/3

6:00 am-12:10 pm

1 stop9h 10m

San Francisco

Mon 2/9

8:42 pm-2:45 pm

2 stops39h 03m

$339

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 1/29

5:40 am-12:12 pm

2 stops33h 32m

San Francisco

Thu 2/5

1:00 pm-12:40 am

1 stop8h 40m

$343

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 1/19

5:40 am-12:12 pm

2 stops33h 32m

San Francisco

Sun 1/25

1:00 pm-12:40 am

1 stop8h 40m

$343

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 2/11

6:45 am-12:40 pm

1 stop8h 55m

San Francisco

Tue 3/10

1:40 pm-12:41 am

1 stop8h 01m

$354

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 2/2

5:45 pm-12:10 pm

1 stop21h 25m

San Francisco

Mon 2/9

1:00 pm-12:40 am

1 stop8h 40m

$357

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 1/30

6:45 am-12:38 pm

1 stop8h 53m

San Francisco

Sat 2/7

1:40 pm-12:43 am

1 stop8h 03m

$358

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 1/13

5:40 am-9:45 pm

3 stops19h 05m

$186

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 3/6

6:45 am-12:40 pm

1 stop8h 55m

$186

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Showing 1-10 of 18 results
1
2

Compare providers for flights from Ottawa to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to San Francisco in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ottawa-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ottawa-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ottawa-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ottawa-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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 December 5, 2025.

The best time to book flights from Ottawa to San Francisco is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $218). Flying from Ottawa to San Francisco in December is currently the most expensive (average of $293). 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 December 8, 2025.

It’s typically best to fly out from Ottawa to San Francisco in the afternoon. Doing so could potentially save you 14% on the flight price compared to flying in the evening, which is usually more expensive.

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 December 8, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, United Airlines, and WestJet from Ottawa to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
397 reviews

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
397 reviews
Porter Airlines
8.0
Very good
397 reviews

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,079 reviews
Porter Airlines
8.0
Very good
397 reviews

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
WestJet
7.2
Good
3,193 reviews
Porter Airlines
8.0
Very good
397 reviews

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,512 reviews
Porter Airlines
8.0
Very good
397 reviews

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

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.

  • What are the cheapest airlines flying from Ottawa to San Francisco round-trip?

    Currently priced at $139, United Airlines will fly you from Ottawa to San Francisco and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from WestJet and Porter Airlines - these airlines can fly you to your destination from $247 and $259, respectively. United Airlines is priced at 61% 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?

    The cheapest airlines for a one-way flight from Ottawa to San Francisco are WestJet ($144), Porter Airlines ($149), and Air Canada ($164).

  • 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 $218). Flying from Ottawa to San Francisco in December is currently the most expensive (average of $293). 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Sunnyvale
Santa Clara
San Bruno
Redwood City
Daly City
Vallejo
Hollister
Foster City
Union City
Davis
San Ramon
Burlingame
Milpitas

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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 2,558,603 searches. Data last updated December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$241Average$410FlexibilityNo cancel feeOn-time69%
WestJetCheapest$247Average$336FlexibilityNo cancel feeOn-time60%
Porter AirlinesCheapest$259Average$413FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$274Average$377FlexibilityNo cancel feeOn-time67%

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