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Cheap flights from Ottawa to San Francisco from C$ 202

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
20 Apr — 27 Apr1
1 adult

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 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 15 April 2025.

Round-trip from

C$ 341

One-way from

C$ 202

Popular in

July

Cheapest in

January

Average price

C$ 463
WestJet
  • WestJet
  • 4/6-15/6
  • 2 total stops
  • 18h 20m total
  • Ottawa to San Francisco
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Porter Airlines
  • Porter Airlines
  • 1/6
  • 1 total stop
  • 8h 30m total
  • Ottawa to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
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Average for round-trip flights in April 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 15 April 2025.

Wed 4/63:45 p.m.YOW - SFO
1 stop8h 40mWestJet
Sun 15/66:05 p.m.SFO - YOW
1 stop9h 40mWestJet
Deal found 14/4C$ 341
Mon 12/56:00 a.m.YOW - SFO
1 stop8h 35mAir Canada
Fri 16/511:25 a.m.SFO - YOW
1 stop7h 42mAir Canada
Deal found 14/4C$ 368
Sat 17/511:20 a.m.YOW - SFO
2 stops23h 24mMultiple Airlines
Mon 26/52:45 p.m.SFO - YOW
1 stop20h 59mMultiple Airlines
Deal found 14/4C$ 449
Tue 22/45:55 a.m.YOW - SFO
2 stops16h 05mDelta
Sun 27/47:10 a.m.SFO - YOW
2 stops14h 12mDelta
Deal found 14/4C$ 570
Sat 3/57:00 a.m.YOW - SFO
1 stop8h 30mPorter Airlines
Sat 23/81:25 p.m.SFO - YOW
1 stop7h 56mPorter Airlines
Deal found 13/4C$ 595
Sat 10/57:29 p.m.YOW - SFO
2 stops15h 00mUnited Airlines
Fri 16/512:43 a.m.SFO - YOW
2 stops10h 44mUnited Airlines
Deal found 14/4C$ 786

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 15 April 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

Wed 4/6

3:45 p.m.-9:25 p.m.

1 stop8h 40m

San Francisco

Sun 15/6

6:05 p.m.-6:45 a.m.

1 stop9h 40m

C$ 341

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 12/5

6:00 a.m.-11:35 a.m.

1 stop8h 35m

San Francisco

Fri 16/5

11:25 a.m.-10:07 p.m.

1 stop7h 42m

C$ 368

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 17/5

11:20 a.m.-7:44 a.m.

2 stops23h 24m

San Francisco

Mon 26/5

2:45 p.m.-2:44 p.m.

1 stop20h 59m

C$ 449

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 3/5

7:00 a.m.-12:30 p.m.

1 stop8h 30m

San Francisco

Sat 23/8

1:25 p.m.-12:21 a.m.

1 stop7h 56m

C$ 595

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 10/5

9:50 a.m.-9:30 p.m.

2 stops14h 40m

San Francisco

Fri 16/5

12:10 a.m.-2:04 p.m.

1 stop10h 54m

C$ 786

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 1/6

7:00 a.m.-12:30 p.m.

1 stop8h 30m

C$ 202

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 29/7

3:35 p.m.-9:25 p.m.

1 stop8h 50m

C$ 204

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 1/6

6:00 a.m.-11:35 a.m.

1 stop8h 35m

C$ 218

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 14/5

7:00 a.m.-8:27 p.m.

2 stops16h 27m

C$ 236

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 13/7

5:55 a.m.-6:03 p.m.

2 stops15h 08m

C$ 759

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/4

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 11 April 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 June is currently the most expensive (average of C$ 379). 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 15 April 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 15 April 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.
Porter Airlines
8.0
Very good
280 reviews
Check prices

Comfort

8.0

Crew

8.7

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Porter Airlines
8.0
Very good
280 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Comfort

8.0

Crew

8.7

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Delta
8.0
Very good
7,916 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Comfort

8.0

Crew

8.7

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
United Airlines
7.4
Good
8,656 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Comfort

8.0

Crew

8.7

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
WestJet
7.2
Good
2,805 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Comfort

8.0

Crew

8.7

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Air Canada
7.0
Good
9,118 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Comfort

8.0

Crew

8.7

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

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?

    WestJet, at C$ 341, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Air Canada and Delta. WestJet is priced at 40% 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$ 202 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on WestJet and Air Canada, with prices starting from C$ 212 and C$ 218, 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, 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 June is currently the most expensive (average of C$ 379). 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

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Richmond
San Ramon
Newark
Alameda
Redwood City
Burlingame
South San Francisco
San Bruno
Scotts Valley
Novato
Belmont
Millbrae
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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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 15 April 2025.
Air Canada flights from Ottawa to San Francisco
WestJet flights from Ottawa to San Francisco
United Airlines flights from Ottawa to San Francisco

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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 298AverageC$ 581FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 338AverageC$ 661FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 349AverageC$ 553FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 358AverageC$ 661FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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.

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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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