Question 1

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

Accepted Answer

WestJet, at C$ 406, was found to be the cheapest airline from Ottawa to San Francisco. An alternate airline flying to your destination would be Delta. WestJet is priced at 21% lower than the current average price of a flight leaving 3 months from now.

Question 2

How far ahead should I book a flight from Ottawa to San Francisco?

Accepted Answer

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.

Question 3

What is the cheapest month to book a flight from Ottawa to San Francisco?

Accepted Answer

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 December is currently the most expensive (average of C$ 368). 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.

Question 4

What is the cheapest day to fly from Ottawa to San Francisco?

Accepted Answer

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.

Question 5

E

Accepted Answer

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.

Question 6

E

Accepted Answer

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).

Question 7

What are the most popular airlines that fly from Ottawa to San Francisco?

Accepted Answer

Before booking your flight from Ottawa to San Francisco check out the most popular airlines for this route: Air Canada, Porter Airlines or United Airlines.

Question 8

What is the cheapest day to fly round-trip from Ottawa to San Francisco?

Accepted Answer

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 33% on your flight compared to booking on days when demand is much higher.

Question 9

How far in advance should I book a flight from Ottawa to San Francisco?

Accepted Answer

To save on the cost of your flight from Ottawa to San Francisco, book at least 57 days before your planned departure. Booking around this time can save you about 76% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 449 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 893.

Question 10

What is the cheapest month to fly from Ottawa to San Francisco?

Accepted Answer

Our data shows that January tends to be the cheapest month to fly to San Francisco from Ottawa. Users have commonly found prices around C$ 518 for the month, but tickets can be as low as C$ 347. Due to multiple factors, prepare for potentially higher prices in December.

Question 11

What is the cheapest time of day to fly from YOW to SFO?

Accepted Answer

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.

Question 12

Can I find deals for flights from Ottawa to San Francisco that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Ottawa to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 13

How can I find direct flights from Ottawa to San Francisco?

Accepted Answer

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.

Question 14

Can I find deals for business class flights from Ottawa to San Francisco?

Accepted Answer

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.

Question 15

How does Cheapflights help users find flights from Ottawa to San Francisco?

Accepted Answer

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.

Question 16

Why should you use Cheapflights to find cheap flight tickets from Ottawa to San Francisco?

Accepted Answer

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.

Question 17

Can Cheapflights find flights from Ottawa to San Francisco with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to San Francisco flexibly with Cheapflights today.

Question 18

Can Cheapflights notify me if prices for flights from Ottawa to San Francisco become cheaper?

Accepted Answer

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.

Round-trip from	C$ 406
One-way from	C$ 228
Popular in	December
Cheapest in	January
Average price	C$ 468

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 309	AverageC$ 447	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
United Airlines	CheapestC$ 330	AverageC$ 611	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 334	AverageC$ 605	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Porter Airlines	CheapestC$ 340	AverageC$ 476	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights

Cheap flights from Ottawa to San Francisco from C$ 228

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheap flight deals from Ottawa to San Francisco

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Find flight deals from Ottawa to San Francisco

Cheapest flights from Ottawa to San FranciscoExplore 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 30 June 2025.

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 30 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ottawa to San Francisco that are best for you.

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.

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 27 June 2025.

What is the cheapest month to book a flight from Ottawa to San Francisco?

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 30 June 2025.

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.

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Delta and WestJet 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.

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?

Can I find deals for flights from Ottawa to San Francisco that include hotel bookings?

How can I find direct flights from Ottawa to San Francisco?

Can I find deals for business class flights from Ottawa to San Francisco?

What is the cheapest month to book a flight from Ottawa to San Francisco?

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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 30 June 2025.

Top 4 airlines flying from Ottawa to San Francisco

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How does Cheapflights help users find flights from Ottawa to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Ottawa to San Francisco?

Can Cheapflights find flights from Ottawa to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Ottawa to San Francisco become cheaper?

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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 30 June 2025.