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$162+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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”

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Cheapflights Tip: The best prices from Ottawa to San Francisco are usually found in January or March, booked 85 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$292
(Trip.com)

One-way from

$162
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$444
Provider with most accurate pricing for Ottawa-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Ottawa-San Francisco flights.
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From Ottawa to San Francisco
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One-way flight from Ottawa to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find 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 May 1, 2025.

This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:45 amYOW - SFO
1 stop11h 14mWestJet
Tue 7/156:05 pmSFO - YOW
1 stop9h 40mWestJet
Deal found 4/29$292
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/43:45 pmYOW - SFO
1 stop8h 40mMultiple Airlines
Wed 6/187:00 amSFO - YOW
2 stops24h 21mMultiple Airlines
Deal found 4/29$344
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:50 amYOW - SFO
2 stops15h 31mDelta
Tue 10/149:00 amSFO - YOW
2 stops12h 22mDelta
Deal found 4/30$525
This United Airlines deal was found by Cheapflights users on 4/30. 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 10/85:15 amYOW - SFO
2 stops17h 55mUnited Airlines
Sat 10/1112:43 amSFO - YOW
2 stops10h 24mUnited Airlines
Deal found 4/30$603
This Air Canada deal was found by Cheapflights users on 4/29. 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.
Tue 5/66:00 amYOW - SFO
1 stop8h 35mAir Canada
Tue 5/138:29 amSFO - YOW
1 stop7h 57mAir Canada
Deal found 4/29$664
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:00 amYOW - SFO
1 stop8h 23mPorter Airlines
Sat 12/131:30 pmSFO - YOW
1 stop8h 12mPorter Airlines
Deal found 4/30$666

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 May 1, 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

Thu 7/10

5:45 am-1:59 pm

1 stop11h 14m

San Francisco

Tue 7/15

6:05 pm-6:45 am

1 stop9h 40m

$292

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 6/4

3:45 pm-9:25 pm

1 stop8h 40m

San Francisco

Wed 6/18

7:00 am-10:21 am

2 stops24h 21m

$344

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 10/10

7:50 am-8:21 pm

2 stops15h 31m

San Francisco

Tue 10/14

9:00 am-12:22 am

2 stops12h 22m

$525

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 10/8

5:15 am-8:10 pm

2 stops17h 55m

San Francisco

Sat 10/11

12:43 am-2:07 pm

2 stops10h 24m

$603

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 8/29

7:00 am-12:23 pm

1 stop8h 23m

San Francisco

Sat 12/13

1:30 pm-12:42 am

1 stop8h 12m

$666

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 9/2

9:55 pm-9:26 am

1 stop14h 31m

San Francisco

Thu 12/11

8:40 am-9:33 pm

1 stop9h 53m

$674

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 7/30

12:20 pm-9:25 pm

2 stops12h 05m

$162

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 5/30

6:30 pm-1:59 pm

3 stops22h 29m

$206

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 7/5

6:33 am-5:26 pm

1 stop13h 53m

$361

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-San Francisco flight deals on Cheapflights vs. FlightHub >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 April 25, 2025.

The best time to book flights from Ottawa to San Francisco is 85 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, January is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of $276). Flying from Ottawa to San Francisco in June is currently the most expensive (average of $384). 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 May 1, 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 morning, which is usually more expensive.

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 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 May 1, 2025.
See what other customers who have flown with Porter Airlines, Delta and United Airlines from Ottawa to San Francisco have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
285 reviews

Boarding

8.2

Food

7.6

Entertainment

7.0

Comfort

8.1

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Porter Airlines
8.0
Very good
285 reviews
Porter Airlines
8.0
Very good
285 reviews

Boarding

8.2

Food

7.6

Entertainment

7.0

Comfort

8.1

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Delta
8.0
Very good
7,934 reviews
Porter Airlines
8.0
Very good
285 reviews

Boarding

8.2

Food

7.6

Entertainment

7.0

Comfort

8.1

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
United Airlines
7.4
Good
8,696 reviews
Porter Airlines
8.0
Very good
285 reviews

Boarding

8.2

Food

7.6

Entertainment

7.0

Comfort

8.1

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
WestJet
7.2
Good
2,826 reviews
Porter Airlines
8.0
Very good
285 reviews

Boarding

8.2

Food

7.6

Entertainment

7.0

Comfort

8.1

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Air Canada
7.0
Good
9,252 reviews
Porter Airlines
8.0
Very good
285 reviews

Boarding

8.2

Food

7.6

Entertainment

7.0

Comfort

8.1

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

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 $292, WestJet will fly you from Ottawa to San Francisco and back. In addition to WestJet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $525 and $603, respectively. WestJet is priced at 28% lower than the current average price of a flight leaving 3 months from now.

  • 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, January is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of $276). Flying from Ottawa to San Francisco in June is currently the most expensive (average of $384). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
Livermore
South San Francisco
Turlock
Manteca
Fairfield
Richmond
Watsonville
Hollister
Newark
Milpitas
Antioch
Sausalito
Hayward
Alameda
Sunnyvale
Campbell
Daly City

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Top 3 airlines flying from Ottawa to San Francisco

Discover the top 3 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$241Average$555FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$259Average$392FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$274Average$541FlexibilityNo cancel feeOn-time67%

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