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 22m.

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$ 456.

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 28m.

How long is the flight from Ottawa to San Francisco?

For as low as C$ 434, WestJet can have you in San Francisco from Ottawa in 8h 55m. The distance from Ottawa to San Francisco is about 3925 km. Both multi-stop and direct flights can be found to your destination and back.

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

United Airlines, at C$ 335, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Air Canada and Porter Airlines. United Airlines is priced at 35% lower than the current average price of a flight leaving 3 months from now.

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: 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 21 days before your planned departure. Booking around this time can save you about 72% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 452 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 952.

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$ 515 for the month, but tickets can be as low as C$ 352. Due to multiple factors, prepare for potentially higher prices in December.

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$ 190+ Flights from Ottawa to San Francisco

Cheapflights Tip: The best prices from Ottawa to San Francisco are usually found in January or May, booked 86 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$ 413
One-way from	C$ 190
Popular in	December
Cheapest in	January
Average price	C$ 506

WestJet
24/10-31/10
2 total stops
17h 34m total
Ottawa to San Francisco

Search Deals

WestJet
7/10
2 total stops
21h 39m total
Ottawa to San Francisco

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (C$ 64 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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 11 September 2025.

Tue 16/96:00 a.m.YOW - SFO

1 stop8h 54mWestJet

Fri 19/92:45 p.m.SFO - YOW

2 stops21h 11mWestJet

Deal found 9/9C$ 406

Mon 15/95:15 p.m.YOW - SFO

2 stops21h 39mWestJet

Mon 22/92:45 p.m.SFO - YOW

2 stops22h 34mWestJet

Deal found 9/9C$ 407

Fri 24/106:00 a.m.YOW - SFO

1 stop8h 54mWestJet

Fri 31/101:00 p.m.SFO - YOW

1 stop8h 40mWestJet

Deal found 8/9C$ 413

Mon 29/95:15 p.m.YOW - SFO

2 stops31h 09mWestJet

Wed 1/1012:50 p.m.SFO - YOW

2 stops32h 32mWestJet

Deal found 9/9C$ 414

Thu 2/105:15 p.m.YOW - SFO

2 stops31h 09mMultiple Airlines

Mon 6/1010:15 a.m.SFO - YOW

1 stop25h 29mMultiple Airlines

Deal found 11/9C$ 416

Mon 15/912:20 p.m.YOW - SFO

2 stops26h 34mWestJet

Wed 17/97:30 a.m.SFO - YOW

2 stops29h 49mWestJet

Deal found 9/9C$ 418

Thu 2/106:00 a.m.YOW - SFO

1 stop8h 54mWestJet

Mon 6/1012:50 p.m.SFO - YOW

2 stops24h 29mWestJet

Deal found 10/9C$ 424

Thu 2/105:15 p.m.YOW - SFO

2 stops31h 09mWestJet

Tue 7/107:30 a.m.SFO - YOW

1 stop14h 10mWestJet

Deal found 10/9C$ 430

Sat 15/116:45 a.m.YOW - SFO

1 stop8h 55mPorter Airlines

Tue 18/111:40 p.m.SFO - YOW

1 stop8h 01mPorter Airlines

Deal found 9/9C$ 434

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 11 September 2025.

Fri 24/1012:20 p.m.YOW - SFO

2 stops12h 04mWestJet

Fri 31/101:00 p.m.SFO - YOW

1 stop8h 40mWestJet

Deal found 8/9C$ 420

Sat 15/1110:00 a.m.YOW - SFO

2 stops14h 29mMultiple Airlines

Tue 18/1110:15 a.m.SFO - YOW

1 stop30h 49mMultiple Airlines

Deal found 9/9C$ 424

Sat 15/116:45 a.m.YOW - SFO

1 stop8h 55mPorter Airlines

Tue 18/111:40 p.m.SFO - YOW

1 stop8h 01mPorter Airlines

Deal found 9/9C$ 434

Thu 27/112:50 p.m.YOW - SFO

1 stop9h 32mAir Canada

Wed 3/126:00 p.m.SFO - YOW

1 stop9h 43mAir Canada

Deal found 9/9C$ 456

Thu 2/106:00 a.m.YOW - SFO

1 stop8h 54mWestJet

Mon 6/1012:50 p.m.SFO - YOW

2 stops24h 29mWestJet

Deal found 10/9C$ 424

Sun 14/126:00 a.m.YOW - SFO

1 stop9h 12mMultiple Airlines

Sun 11/110:15 a.m.SFO - YOW

1 stop25h 29mMultiple Airlines

Deal found 9/9C$ 441

Sat 8/112:50 p.m.YOW - SFO

1 stop9h 32mAir Canada

Tue 11/1111:20 a.m.SFO - YOW

1 stop9h 58mAir Canada

Deal found 8/9C$ 456

Thu 2/105:15 p.m.YOW - SFO

2 stops31h 09mWestJet

Tue 7/107:30 a.m.SFO - YOW

1 stop14h 10mWestJet

Deal found 10/9C$ 430

Tue 11/116:00 a.m.YOW - SFO

1 stop9h 12mMultiple Airlines

Thu 13/116:33 p.m.SFO - YOW

2 stops27h 09mMultiple Airlines

Deal found 10/9C$ 449

Wed 26/115:45 p.m.YOW - SFO

1 stop21h 27mMultiple Airlines

Sun 30/1110:15 a.m.SFO - YOW

2 stops35h 27mMultiple Airlines

Deal found 9/9C$ 456

Mon 6/107:15 p.m.YOW - SFO

1 stop19h 39mWestJet

Thu 9/1012:50 p.m.SFO - YOW

2 stops32h 32mWestJet

Deal found 10/9C$ 466

Last-minute flights from Ottawa to San Francisco
Discover last-minute flight deals from Ottawa to San Francisco. Data last updated 11 September 2025 and is based on user searches.

Tue 16/96:00 a.m.YOW - SFO

1 stop8h 54mWestJet

Fri 19/92:45 p.m.SFO - YOW

2 stops21h 11mWestJet

Deal found 9/9C$ 406

Tue 16/96:00 a.m.YOW - SFO

1 stop8h 54mMultiple Airlines

Fri 19/92:45 p.m.SFO - YOW

1 stop20h 59mMultiple Airlines

Deal found 9/9C$ 611

Tue 16/95:15 a.m.YOW - SFO

2 stops17h 55mUnited Airlines

Fri 19/94:28 p.m.SFO - YOW

2 stops13h 43mUnited Airlines

Deal found 9/9C$ 1,228

Sun 21/97:00 a.m.YOW - SFO

1 stop8h 23mPorter Airlines

Fri 26/91:25 p.m.SFO - YOW

1 stop7h 56mPorter Airlines

Deal found 11/9C$ 791

Sun 21/95:15 p.m.YOW - SFO

2 stops23h 42mWestJet

Fri 26/912:50 p.m.SFO - YOW

1 stop8h 50mWestJet

Deal found 11/9C$ 952

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 11 September 2025.

Tue 7/105:15 p.m.YOW - SFO

2 stops21h 39mWestJet

Deal found 8/9C$ 190

Thu 16/105:15 p.m.YOW - SFO

2 stops23h 42mWestJet

Deal found 8/9C$ 216

Wed 8/1012:20 p.m.YOW - SFO

3 stops23h 24mMultiple Airlines

Deal found 8/9C$ 231

Wed 1/106:00 a.m.YOW - SFO

1 stop8h 54mWestJet

Deal found 9/9C$ 233

Sun 25/16:00 a.m.YOW - SFO

1 stop9h 12mWestJet

Deal found 11/9C$ 234

Mon 8/125:40 a.m.YOW - SFO

3 stops33h 32mWestJet

Deal found 9/9C$ 241

Mon 8/125:40 a.m.YOW - SFO

2 stops30h 03mMultiple Airlines

Deal found 9/9C$ 245

Thu 9/106:00 a.m.YOW - SFO

3 stops31h 02mMultiple Airlines

Deal found 9/9C$ 249

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

Fri 24/10

12:20 p.m.-9:24 p.m.

2 stops12h 04m

San Francisco

Fri 31/10

1:00 p.m.-12:40 a.m.

1 stop8h 40m

C$ 420

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 15/11

10:00 a.m.-9:29 p.m.

2 stops14h 29m

San Francisco

Tue 18/11

10:15 a.m.-8:04 p.m.

1 stop30h 49m

C$ 424

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 2/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Mon 6/10

12:50 p.m.-4:19 p.m.

2 stops24h 29m

C$ 424

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 2/10

5:15 p.m.-9:24 p.m.

2 stops31h 09m

San Francisco

Tue 7/10

7:30 a.m.-12:40 a.m.

1 stop14h 10m

C$ 430

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 15/11

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Tue 18/11

1:40 p.m.-12:41 a.m.

1 stop8h 01m

C$ 434

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 14/12

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

1 stop9h 12m

San Francisco

Sun 11/1

10:15 a.m.-2:44 p.m.

1 stop25h 29m

C$ 441

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 11/11

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

1 stop9h 12m

San Francisco

Thu 13/11

6:33 p.m.-12:42 a.m.

2 stops27h 09m

C$ 449

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 27/11

2:50 p.m.-9:22 p.m.

1 stop9h 32m

San Francisco

Wed 3/12

6:00 p.m.-6:43 a.m.

1 stop9h 43m

C$ 456

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 8/11

2:50 p.m.-9:22 p.m.

1 stop9h 32m

San Francisco

Tue 11/11

11:20 a.m.-12:18 a.m.

1 stop9h 58m

C$ 456

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 26/11

5:45 p.m.-12:12 p.m.

1 stop21h 27m

San Francisco

Sun 30/11

10:15 a.m.-12:42 a.m.

2 stops35h 27m

C$ 456

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 21 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

Prices

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

Booking 86 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 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.

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.

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Porter Airlines,United Airlines, andWestJet 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

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Porter Airlines

7.9

Good

363 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sep 2025

YYZ - OPO

United Airlines

7.4

Good

8,937 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sep 2025

YYZ - OPO

WestJet

7.2

Good

3,091 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sep 2025

YYZ - OPO

Air Canada

7.1

Good

10,000 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sep 2025

YYZ - OPO

Related info for your journey

How long is the flight from Ottawa to San Francisco?
For as low as C$ 434, WestJet can have you in San Francisco from Ottawa in 8h 55m. The distance from Ottawa to San Francisco is about 3925 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Ottawa to San Francisco round-trip?
United Airlines, at C$ 335, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Air Canada and Porter Airlines. United Airlines is priced at 35% 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 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.

See more FAQs

Richmond

Newark

Alameda

Redwood City

Burlingame

San Bruno

South San Francisco

Scotts Valley

Belmont

Novato

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
United Airlines	CheapestC$ 335	AverageC$ 581	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 339	AverageC$ 594	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Porter Airlines	CheapestC$ 340	AverageC$ 441	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
WestJet	CheapestC$ 342	AverageC$ 442	FlexibilityNo cancel fee	On-time60%	Search WestJet 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$ 190

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 7/10. 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 86 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 11 September 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 11 September 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?

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?

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

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

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

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

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

Reviews of airlines servicing San Francisco

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

How long is the flight from Ottawa to San Francisco?

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?

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 11 September 2025.

Top 4 airlines flying from Ottawa to San Francisco

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?

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 11 September 2025.