What’s the cheapest layover airport for flights from Ottawa to San Francisco?

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 540.

Which airport typically offers the quickest layover for flights from Ottawa to San Francisco?

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 38m.

What’s the fastest layover option from Ottawa to San Francisco?

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 8h 15m.

What’s the top layover airport for flights from Ottawa to San Francisco?

Toronto (YYZ) – chosen by Cheapflights users on 62% of one-stop itineraries from Ottawa to San Francisco on Cheapflights.

How long is the flight from Ottawa to San Francisco?

For as low as C$ 493, WestJet can have you in San Francisco from Ottawa in 17h 35m. The distance from Ottawa to San Francisco is about 3925 km.

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

WestJet, at C$ 328, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Porter Airlines and Air Canada. WestJet is priced at 48% 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$ 216 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 Air Canada, with prices starting from C$ 257 and C$ 268, respectively.

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.

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).

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: Porter Airlines, Air Canada or WestJet.

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

When flying from Ottawa to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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$ 238+ Cheap Flights from Ottawa to San Francisco

Cheap flight deals from Ottawa to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 7 September 2026.

Wed 7/107:20 a.m. -

1 stop17h 35m

Tue 13/106:00 a.m. -

2 stops15h 20m

Deal found 3/9C$ 479

Thu 5/115:30 a.m. -

2 stops13h 20m

Sun 22/114:40 p.m. -

2 stops29h 04m

Deal found 4/9C$ 480

Fri 18/912:25 p.m. -

2 stops26h 35m

Mon 21/96:00 a.m. -

1 stop20h 35m

Deal found 3/9C$ 481

Mon 19/1012:25 p.m. -

2 stops12h 30m

Sat 24/101:00 p.m. -

2 stops32h 44m

Deal found 5/9C$ 483

Thu 29/107:00 a.m. -

1 stop8h 45m

Tue 3/111:45 p.m. -

1 stop8h 05m

Deal found 4/9C$ 486

Thu 29/106:10 a.m. -

1 stop13h 40m

Sun 1/114:40 p.m. -

1 stop18h 50m

Deal found 2/9C$ 487

Fri 2/101:20 p.m. -

1 stop11h 35m

Mon 5/106:00 a.m. -

1 stop10h 20m

Deal found 3/9C$ 491

Wed 7/107:20 a.m. -

1 stop17h 35m

Mon 12/106:00 a.m. -

1 stop20h 35m

Deal found 3/9C$ 493

Tue 22/98:15 p.m. -

1 stop23h 25m

Thu 1/101:00 p.m. -

1 stop27h 20m

Deal found 4/9C$ 495

Find flight deals from Ottawa to San Francisco

Round-trip from	C$ 479
One-way from	C$ 238
Popular in	July
Cheapest in	September
Average price	C$ 511

WestJet
7/10-13/10
3 total stops
32h 55m total
Ottawa to San Francisco

Search Deals

WestJet
2/10-31/12
2 total stops
12h 30m total
Ottawa to San Francisco

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (C$ 80 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

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

Cheapest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Mon 19/10

7:20 a.m.-9:55 p.m.

1 stop17h 35m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 246

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 1/10

12:25 p.m.-9:55 p.m.

2 stops12h 30m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 248

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 2/10

8:35 a.m.-9:55 p.m.

1 stop16h 20m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 296

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 1/10

6:15 p.m.-3:33 p.m.

3 stops48h 18m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 296

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 6/11

5:30 a.m.-6:17 p.m.

2 stops15h 47m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 329

Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Mon 14/12

5:30 a.m.-2:33 p.m.

2 stops12h 03m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 329

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 7/10

6:55 a.m.-7:47 p.m.

3 stops15h 52m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 331

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sat 26/9

6:55 a.m.-6:13 p.m.

2 stops14h 18m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 336

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 7/10

7:20 a.m.-9:55 p.m.

1 stop17h 35m

San Francisco

Mon 12/10

6:00 a.m.-5:35 a.m.

1 stop20h 35m

C$ 493

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 7/10

6:55 a.m.-9:55 p.m.

2 stops18h 00m

San Francisco

Tue 13/10

6:00 a.m.-12:20 a.m.

2 stops15h 20m

C$ 498

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 16 resultsSorted by cheapest first

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.

YOW-SFO

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

Prices

Booking 71 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, September is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 511). Flying from Ottawa to San Francisco in July is currently the most expensive (average of C$ 802). 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.

How much does it cost to fly round-trip from Ottawa to San Francisco?

Airfare is typical for this route at the moment.

Ottawa to San Francisco flights typically cost between C$ 472 and C$ 831 in October.
The cheapest round-trip price found within the last 5 days was C$ 479 on WestJet (7 Oct-13 Oct).

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines 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.

Porter Airlines

8.0

Very good

458 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

Porter Airlines

8.0

Very good

458 reviews

Porter Airlines

8.0

Very good

458 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

Delta

7.8

Good

8,553 reviews

Porter Airlines

8.0

Very good

458 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

United Airlines

7.4

Good

10,173 reviews

Porter Airlines

8.0

Very good

458 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

WestJet

7.2

Good

3,447 reviews

Porter Airlines

8.0

Very good

458 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

Air Canada

7.1

Good

11,595 reviews

Porter Airlines

8.0

Very good

458 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

Related info for your journey

How long is the flight from Ottawa to San Francisco?
For as low as C$ 493, WestJet can have you in San Francisco from Ottawa in 17h 35m. The distance from Ottawa to San Francisco is about 3925 km.
What are the cheapest airlines flying from Ottawa to San Francisco round-trip?
WestJet, at C$ 328, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Porter Airlines and Air Canada. WestJet is priced at 48% 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$ 216 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 Air Canada, with prices starting from C$ 257 and C$ 268, 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, September is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 511). Flying from Ottawa to San Francisco in July is currently the most expensive (average of C$ 802). 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

Santa Clara

Burlingame

San Bruno

Roseville

Livermore

South San Francisco

Novato

Manteca

Vallejo

Browse thousands of different options on Cheapflights for your next trip

Airlines

Alternative routes

Complete your trip

Direct flights to California

Flights by cabin class

Other flight options

Other flights from Ottawa

Popular flights

San Francisco flight routes

Fly from Ottawa to San Francisco on these airlines

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

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 328	AverageC$ 532	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Porter Airlines	CheapestC$ 393	AverageC$ 611	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Air Canada	CheapestC$ 397	AverageC$ 818	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 501	AverageC$ 654	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Ottawa to San Francisco from C$ 238

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 7 September 2026.

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 7 September 2026.

Best flights from Ottawa to San FranciscoDiscover 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 7 September 2026.

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 7 September 2026.

Last-minute flights from Ottawa to San FranciscoDiscover last-minute flight deals from Ottawa to San Francisco. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from Ottawa to San Francisco. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Ottawa to San FranciscoSearch for one-way flight options from Ottawa to San Francisco. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Search for one-way flight options from Ottawa to San Francisco. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Find flight deals from Ottawa to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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

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

Booking 71 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?

How much does it cost to fly round-trip from Ottawa to San Francisco?

Airfare is typical for this route at the moment.

Ottawa to San Francisco flights typically cost between C$ 472 and C$ 831 in October.The cheapest round-trip price found within the last 5 days was C$ 479 on WestJet (7 Oct-13 Oct).

What’s the top layover airport for flights from Ottawa to San Francisco?

Toronto (YYZ) – chosen by Cheapflights users on 62% of one-stop itineraries from Ottawa to San Francisco on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to San Francisco?

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 540.

What’s the fastest layover option from Ottawa to San Francisco?

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 8h 15m.

Which airport typically offers the quickest layover for flights from Ottawa to San Francisco?

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 38m.

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines 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

How long is the flight from Ottawa to San Francisco?

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 San Francisco?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 7 September 2026.

Alternative routes for Ottawa to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to San Francisco by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to California

Book a non-stop flight to one of these other cities located in California.

Search flights from Ottawa to San Francisco by cabin class

Find flights from Ottawa to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ottawa and San Francisco flights

Browse other Ottawa and San Francisco flight options. Last updated on 7 September 2026.

Other flights from Ottawa

Browse through other flights departing from Ottawa. Flights are based on user searches made on Cheapflights and were last updated on 7 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to San Francisco

Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 7 September 2026.

Top 4 airlines flying from Ottawa to San Francisco

Fly with Cheapflights

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?

100% Free

Book with Flexibility

Travel Smart

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 7 September 2026.

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 7 September 2026.

Last-minute flights from Ottawa to San Francisco
Discover last-minute flight deals from Ottawa to San Francisco. Data last updated 7 September 2026 and is based on user searches.

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 7 September 2026.

Ottawa to San Francisco flights typically cost between C$ 472 and C$ 831 in October.
The cheapest round-trip price found within the last 5 days was C$ 479 on WestJet (7 Oct-13 Oct).