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

WestJet, at C$ 354, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Porter Airlines and Delta. WestJet is priced at 42% 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$ 239 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 Delta, with prices starting from C$ 245 and C$ 298, respectively.

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

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.

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

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.

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

To save on the cost of your flight from Ottawa to San Francisco, book at least 50 days before your planned departure. Booking around this time can save you about 68% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 470 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 935.

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

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$ 619 for the month, but tickets can be as low as C$ 364. Due to multiple factors, prepare for potentially higher prices in May.

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.

C$ 239+ Flights from Ottawa to San Francisco

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

Cheap flight deals from Ottawa to San Francisco

Round-trip from	C$ 354
One-way from	C$ 239
Popular in	May
Cheapest in	January
Average price	C$ 557

WestJet
21/5-25/5
2 total stops
18h 45m total
Ottawa to San Francisco

Search Deals

WestJet
31/8
2 total stops
14h 05m total
Ottawa to San Francisco

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (C$ 104 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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 25 March 2025.

Wed 21/56:00 a.m.YOW - SFO

1 stop9h 05mWestJet

Sun 25/56:05 p.m.SFO - YOW

1 stop9h 40mWestJet

Deal found 24/3C$ 354

Fri 4/46:15 a.m.YOW - SFO

1 stop9h 24mPorter Airlines

Mon 7/41:40 p.m.SFO - YOW

1 stop8h 00mPorter Airlines

Deal found 24/3C$ 393

Thu 29/53:45 p.m.YOW - SFO

1 stop8h 40mMultiple Airlines

Mon 2/61:30 p.m.SFO - YOW

1 stop7h 51mMultiple Airlines

Deal found 24/3C$ 444

Sat 5/45:55 a.m.YOW - SFO

2 stops11h 51mDelta

Mon 7/46:00 a.m.SFO - YOW

2 stops15h 09mDelta

Deal found 23/3C$ 706

Tue 1/75:15 a.m.YOW - SFO

2 stops15h 29mUnited Airlines

Sun 6/712:20 a.m.SFO - YOW

1 stop10h 53mUnited Airlines

Deal found 23/3C$ 827

Tue 25/32:45 p.m.YOW - SFO

1 stop10h 06mAir Canada

Mon 31/312:08 a.m.SFO - YOW

1 stop13h 58mAir Canada

Deal found 24/3C$ 1,506

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 25 March 2025.

Wed 21/56:00 a.m.YOW - SFO

1 stop9h 05mWestJet

Sun 25/56:05 p.m.SFO - YOW

1 stop9h 40mWestJet

Deal found 24/3C$ 354

Fri 4/46:15 a.m.YOW - SFO

1 stop9h 24mPorter Airlines

Mon 7/41:40 p.m.SFO - YOW

1 stop8h 00mPorter Airlines

Deal found 24/3C$ 393

Thu 29/53:45 p.m.YOW - SFO

1 stop8h 40mMultiple Airlines

Mon 2/61:30 p.m.SFO - YOW

1 stop7h 51mMultiple Airlines

Deal found 24/3C$ 444

Sat 5/45:55 a.m.YOW - SFO

2 stops11h 51mDelta

Mon 7/46:00 a.m.SFO - YOW

2 stops15h 09mDelta

Deal found 23/3C$ 706

Tue 1/75:15 a.m.YOW - SFO

2 stops15h 29mUnited Airlines

Sun 6/712:20 a.m.SFO - YOW

1 stop10h 53mUnited Airlines

Deal found 23/3C$ 827

Last-minute flights from Ottawa to San Francisco
Discover last-minute flight deals from Ottawa to San Francisco. Data last updated 25 March 2025 and is based on user searches.

Tue 25/32:45 p.m.YOW - SFO

1 stop10h 06mAir Canada

Mon 31/312:08 a.m.SFO - YOW

1 stop13h 58mAir Canada

Deal found 24/3C$ 1,506

Tue 1/46:15 a.m.YOW - SFO

1 stop9h 24mMultiple Airlines

Fri 4/410:17 p.m.SFO - YOW

1 stop15h 55mMultiple Airlines

Deal found 24/3C$ 652

Tue 1/47:29 p.m.YOW - SFO

2 stops15h 00mUnited Airlines

Fri 4/410:35 p.m.SFO - YOW

2 stops15h 31mUnited Airlines

Deal found 24/3C$ 923

Thu 3/48:10 p.m.YOW - SFO

2 stops19h 56mWestJet

Sun 20/41:55 p.m.SFO - YOW

2 stops31h 14mWestJet

Deal found 24/3C$ 735

Fri 4/46:15 a.m.YOW - SFO

1 stop9h 24mPorter Airlines

Mon 7/41:40 p.m.SFO - YOW

1 stop8h 00mPorter Airlines

Deal found 24/3C$ 393

Sat 5/45:55 a.m.YOW - SFO

2 stops11h 51mDelta

Mon 7/46:00 a.m.SFO - YOW

2 stops15h 09mDelta

Deal found 23/3C$ 706

Mon 21/48:10 p.m.YOW - SFO

2 stops19h 56mWestJet

Fri 2/512:50 p.m.SFO - YOW

2 stops13h 35mWestJet

Deal found 24/3C$ 414

Mon 21/46:15 a.m.YOW - SFO

1 stop9h 24mMultiple Airlines

Fri 2/512:50 p.m.SFO - YOW

2 stops13h 35mMultiple Airlines

Deal found 24/3C$ 460

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 25 March 2025.

Sun 31/86:10 a.m.YOW - SFO

2 stops14h 05mWestJet

Deal found 24/3C$ 239

Thu 8/56:35 p.m.YOW - SFO

2 stops20h 55mPorter Airlines

Deal found 23/3C$ 245

Thu 24/45:55 a.m.YOW - SFO

2 stops16h 05mDelta

Deal found 24/3C$ 298

Sat 26/46:15 a.m.YOW - SFO

2 stops17h 22mMultiple Airlines

Deal found 24/3C$ 307

Sat 5/45:25 p.m.YOW - SFO

2 stops17h 18mUnited Airlines

Deal found 23/3C$ 484

Sat 5/46:00 a.m.YOW - SFO

1 stop10h 55mAir Canada

Deal found 23/3C$ 573

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 21/5

6:00 a.m.-12:05 p.m.

1 stop9h 05m

San Francisco

Sun 25/5

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

1 stop9h 40m

C$ 354

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 4/4

6:15 a.m.-12:39 p.m.

1 stop9h 24m

San Francisco

Mon 7/4

1:40 p.m.-12:40 a.m.

1 stop8h 00m

C$ 393

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 29/5

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

1 stop8h 40m

San Francisco

Mon 2/6

1:30 p.m.-12:21 a.m.

1 stop7h 51m

C$ 444

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 5/4

5:55 a.m.-2:46 p.m.

2 stops11h 51m

San Francisco

Mon 7/4

6:00 a.m.-12:09 a.m.

2 stops15h 09m

C$ 706

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 1/7

5:15 a.m.-5:44 p.m.

2 stops15h 29m

San Francisco

Sun 6/7

12:20 a.m.-2:13 p.m.

1 stop10h 53m

C$ 827

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 31/8

6:10 a.m.-5:15 p.m.

2 stops14h 05m

C$ 239

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 8/5

6:35 p.m.-12:30 p.m.

2 stops20h 55m

C$ 245

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 24/4

5:55 a.m.-7:00 p.m.

2 stops16h 05m

C$ 298

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 26/4

6:15 a.m.-8:37 p.m.

2 stops17h 22m

C$ 307

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 5/4

5:25 p.m.-7:43 a.m.

2 stops17h 18m

C$ 484

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 11 results

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?

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?

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?

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

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

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

To help decide which airline to fly from Ottawa to San Francisco, see what other customers have to say about Delta, Porter Airlines 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.

Delta

8.0

Very good

7,890 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,890 reviews

Delta

8.0

Very good

7,890 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines

7.9

Good

276 reviews

Delta

8.0

Very good

7,890 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,605 reviews

Delta

8.0

Very good

7,890 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet

7.2

Good

2,785 reviews

Delta

8.0

Very good

7,890 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada

7.0

Good

8,957 reviews

Delta

8.0

Very good

7,890 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines flying from Ottawa to San Francisco round-trip?
WestJet, at C$ 354, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Porter Airlines and Delta. WestJet is priced at 42% 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$ 239 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 Delta, with prices starting from C$ 245 and C$ 298, 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

Richmond

San Ramon

Newark

Alameda

Burlingame

Redwood City

South San Francisco

San Bruno

Scotts Valley

Novato

Belmont

Millbrae

Santa Clara

Vallejo

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Ottawa to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 309	AverageC$ 638	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Air Canada	CheapestC$ 350	AverageC$ 705	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Porter Airlines	CheapestC$ 361	AverageC$ 577	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
United Airlines	CheapestC$ 384	AverageC$ 686	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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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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Cheap flights from Ottawa to San Francisco from C$ 239

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 31/8. 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 February, booked 85 days in advance, depart on a Thursday or Wednesday and return on a Friday

Cheap flight deals from Ottawa to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 25 March 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 25 March 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 21 March 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 25 March 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.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

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?

What are the cheapest airlines to fly from Ottawa to San Francisco one-way?

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?

Travelling to a place near Ottawa?

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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 25 March 2025.

Top 4 airlines flying from Ottawa to San Francisco

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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?

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 25 March 2025.