What is the cheapest airline that flies from Ottawa to San Francisco?

Air Transat, Porter Airlines, and WestJet are the most popular carriers operating from Ottawa to San Francisco

Which airport is the most popular layover for flights between Ottawa and San Francisco?

Toronto (YYZ) was the most common stop: 81% of momondo users choosing one-stop flights on this route connected there.

Which airlines fly to San Francisco?

Air Canada, Porter Airlines and WestJet are the top three most popular airlines that fly to San Francisco from Ottawa according to our data. Air Canada is the first choice among our users, with 52% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 6 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Ottawa to San Francisco?

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 8h 54m.

Which layover airport offers the lowest fares from Ottawa to San Francisco?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 571.

Which layover airport has the shortest connection time from Ottawa to San Francisco?

Toronto (YYZ) has the shortest average layover time for this route: 1h 48m.

When did momondo last update prices for flights from Ottawa Airport to San Francisco Airport?

Prices for flights from Ottawa Airport to San Francisco Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Ottawa Airport to San Francisco Airport?

There are 4 operators available for flights from Ottawa Airport to San Francisco Airport as of November 2026.

How old do you have to be to fly from Ottawa Airport to San Francisco Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 324 Cheap Flights from Ottawa to San Francisco in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to San Francisco

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One-way

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Enter your travel dates to find the best prices.

7:00 a.m. - 12:50 p.m.YOW Ottawa-SFO San Francisco

8h 50m1 stop Toronto Pearson Intl

1:45 p.m. - 12:49 a.m.SFO San Francisco-YOW Ottawa

8h 04m1 stop Toronto Pearson Intl

C$ 510Porter Airlines

Thu, 14 Jan - Tue, 19 Jan

7:00 a.m. - 12:50 p.m.YOW Ottawa-SFO San Francisco

8h 50m1 stop Toronto Pearson Intl

1:45 p.m. - 12:49 a.m.SFO San Francisco-YOW Ottawa

8h 04m1 stop Toronto Pearson Intl

C$ 511Porter Airlines

Tue, 12 Jan - Tue, 19 Jan

5:30 a.m. - 4:50 p.m.YOW Ottawa-SFO San Francisco

14h 20m2 stops Toronto Pearson Intl Calgary

5:40 p.m. - 12:40 a.m.SFO San Francisco-YOW Ottawa

28h 00m1 stop Calgary

C$ 578WestJet

Thu, 18 Mar - Thu, 25 Mar

7:00 a.m. - 12:49 p.m.YOW Ottawa-SFO San Francisco

8h 49m1 stop Toronto Pearson Intl

1:45 p.m. - 12:37 a.m.SFO San Francisco-YOW Ottawa

7h 52m1 stop Toronto Pearson Intl

C$ 585Air Transat

Thu, 1 Apr - Thu, 8 Apr

7:00 a.m. - 12:49 p.m.YOW Ottawa-SFO San Francisco

8h 49m1 stop Toronto Pearson Intl

1:45 p.m. - 12:37 a.m.SFO San Francisco-YOW Ottawa

7h 52m1 stop Toronto Pearson Intl

C$ 585Air Transat

Thu, 1 Apr - Fri, 9 Apr

5:30 a.m. - 4:50 p.m.YOW Ottawa-SFO San Francisco

14h 20m2 stops Toronto Pearson Intl Calgary

6:00 a.m. - 5:15 p.m.SFO San Francisco-YOW Ottawa

8h 15m1 stop Calgary

C$ 595WestJet

Thu, 22 Apr - Fri, 30 Apr

5:30 a.m. - 6:52 p.m.YOW Ottawa-SFO San Francisco

16h 22m2 stops Toronto Pearson Intl Detroit Metropolitan Wayne County

6:00 a.m. - 11:40 p.m.SFO San Francisco-YOW Ottawa

14h 40m2 stops Detroit Metropolitan Wayne County Toronto Pearson Intl

C$ 682Delta

Tue, 12 Jan - Tue, 19 Jan

5:30 a.m. - 6:52 p.m.YOW Ottawa-SFO San Francisco

16h 22m2 stops Toronto Pearson Intl Detroit Metropolitan Wayne County

6:00 a.m. - 11:40 p.m.SFO San Francisco-YOW Ottawa

14h 40m2 stops Detroit Metropolitan Wayne County Toronto Pearson Intl

C$ 684Delta

Thu, 14 Jan - Tue, 19 Jan

7:45 a.m. - 4:06 p.m.YOW Ottawa-SFO San Francisco

11h 21m1 stop Vancouver Intl

11:25 a.m. - 12:56 a.m.SFO San Francisco-YOW Ottawa

10h 31m1 stop Vancouver Intl

C$ 1,026Air Canada

Thu, 3 Dec - Thu, 10 Dec

2:55 p.m. - 9:22 p.m.YOW Ottawa-SFO San Francisco

9h 27m1 stop Montreal Pierre Elliott Trudeau Intl

8:19 a.m. - 11:12 p.m.SFO San Francisco-YOW Ottawa

11h 53m1 stop Calgary

C$ 1,927Air Canada

Tue, 13 Apr - Sat, 17 Apr

Cheap last-minute flights

Enter your travel dates to find the best prices.

7:00 a.m. - 12:44 p.m.YOW Ottawa-SFO San Francisco

8h 44m1 stop Toronto Pearson Intl

1:45 p.m. - 12:37 a.m.SFO San Francisco-YOW Ottawa

7h 52m1 stop Toronto Pearson Intl

C$ 1,146Porter Airlines

Sat, 14 Nov - Wed, 18 Nov

7:00 a.m. - 6:02 p.m.YOW Ottawa-SFO San Francisco

14h 02m2 stops Toronto Pearson Intl Los Angeles

1:45 p.m. - 12:37 a.m.SFO San Francisco-YOW Ottawa

7h 52m1 stop Toronto Pearson Intl

C$ 1,178Porter Airlines

Sat, 14 Nov - Wed, 18 Nov

12:15 p.m. - 9:56 p.m.YOW Ottawa-SFO San Francisco

12h 41m2 stops Toronto Island Chicago O'Hare Intl

1:45 p.m. - 12:37 a.m.SFO San Francisco-YOW Ottawa

7h 52m1 stop Toronto Pearson Intl

C$ 1,202Porter Airlines

Wed, 11 Nov - Wed, 18 Nov

7:00 a.m. - 12:44 p.m.YOW Ottawa-SFO San Francisco

8h 44m1 stop Toronto Pearson Intl

1:45 p.m. - 12:37 a.m.SFO San Francisco-YOW Ottawa

7h 52m1 stop Toronto Pearson Intl

C$ 1,283Porter Airlines

Wed, 11 Nov - Wed, 18 Nov

8:00 a.m. - 10:11 a.m.YOW Ottawa-SFO San Francisco

29h 11m3 stops Orlando Houston George Bush Intcntl Los Angeles

7:14 p.m. - 5:24 p.m.SFO San Francisco-YOW Ottawa

19h 10m3 stops Las Vegas Harry Reid Intl Cleveland Hopkins Intl Fort Lauderdale

C$ 1,326Multiple Airlines

Wed, 11 Nov - Wed, 18 Nov

12:10 p.m. - 9:24 p.m.YOW Ottawa-SFO San Francisco

12h 14m2 stops Toronto Pearson Intl Chicago O'Hare Intl

5:00 a.m. - 9:16 p.m.SFO San Francisco-YOW Ottawa

13h 16m2 stops Denver Intl Chicago O'Hare Intl

C$ 1,336United Airlines

Sat, 14 Nov - Wed, 18 Nov

8:00 a.m. - 12:20 a.m.YOW Ottawa-SFO San Francisco

19h 20m2 stops Orlando Denver Intl

7:14 p.m. - 5:24 p.m.SFO San Francisco-YOW Ottawa

19h 10m3 stops Las Vegas Harry Reid Intl Cleveland Hopkins Intl Fort Lauderdale

C$ 1,363Multiple Airlines

Wed, 11 Nov - Wed, 18 Nov

9:45 a.m. - 5:24 p.m.YOW Ottawa-SFO San Francisco

10h 39m2 stops Washington, D.C. Dulles Intl Denver Intl

9:24 p.m. - 7:27 p.m.SFO San Francisco-YOW Ottawa

19h 03m2 stops Denver Intl Washington, D.C. Dulles Intl

C$ 1,414United Airlines

Fri, 13 Nov - Fri, 20 Nov

6:15 a.m. - 11:50 a.m.YOW Ottawa-SFO San Francisco

8h 35m1 stop Chicago O'Hare Intl

9:24 p.m. - 7:27 p.m.SFO San Francisco-YOW Ottawa

19h 03m2 stops Denver Intl Washington, D.C. Dulles Intl

C$ 1,414United Airlines

Fri, 13 Nov - Fri, 20 Nov

5:10 a.m. - 1:30 p.m.YOW Ottawa-SFO San Francisco

11h 20m2 stops Toronto Pearson Intl Chicago O'Hare Intl

12:45 a.m. - 2:29 p.m.SFO San Francisco-YOW Ottawa

10h 44m2 stops Houston George Bush Intcntl Washington, D.C. Reagan-National

C$ 1,415United Airlines

Wed, 11 Nov - Tue, 17 Nov

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Porter Airlines flights from Ottawa to San Francisco

Our best Porter Airlines deals on Ottawa to San Francisco flight tickets

Porter Airlines

14 Jan

YOW7:00 a.m.Ottawa

8h 50m

1 stop

SFO12:50 p.m.San Francisco

19 Jan

SFO1:45 p.m.San Francisco

8h 04m

1 stop

YOW12:49 a.m.Ottawa

C$ 510

Porter Airlines

12 Jan

YOW7:00 a.m.Ottawa

8h 50m

1 stop

SFO12:50 p.m.San Francisco

19 Jan

SFO1:45 p.m.San Francisco

8h 04m

1 stop

YOW12:49 a.m.Ottawa

C$ 511

Porter Airlines

14 Dec

YOW7:00 a.m.Ottawa

8h 47m

1 stop

SFO12:47 p.m.San Francisco

9 Jan

SFO1:45 p.m.San Francisco

8h 04m

1 stop

YOW12:49 a.m.Ottawa

C$ 524

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets

WestJet

18 Mar

YOW5:30 a.m.Ottawa

14h 20m

2 stops

SFO4:50 p.m.San Francisco

25 Mar

SFO5:40 p.m.San Francisco

28h 00m

1 stop

YOW12:40 a.m.Ottawa

C$ 578

WestJet

22 Apr

YOW5:30 a.m.Ottawa

14h 20m

2 stops

SFO4:50 p.m.San Francisco

30 Apr

SFO6:00 a.m.San Francisco

8h 15m

1 stop

YOW5:15 p.m.Ottawa

C$ 595

WestJet

3 Dec

YOW5:30 a.m.Ottawa

13h 20m

2 stops

SFO3:50 p.m.San Francisco

10 Dec

SFO4:40 p.m.San Francisco

28h 00m

1 stop

YOW11:40 p.m.Ottawa

C$ 599

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 14/1

7:00 a.m.-12:50 p.m.

1 stop8h 50m

San Francisco

Tue 19/1

1:45 p.m.-12:49 a.m.

1 stop8h 04m

C$ 510

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 12/1

7:00 a.m.-12:50 p.m.

1 stop8h 50m

San Francisco

Tue 19/1

1:45 p.m.-12:49 a.m.

1 stop8h 04m

C$ 511

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 18/3

5:30 a.m.-4:50 p.m.

2 stops14h 20m

San Francisco

Thu 25/3

5:40 p.m.-12:40 a.m.

1 stop28h 00m

C$ 578

Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 1/4

7:00 a.m.-12:49 p.m.

1 stop8h 49m

San Francisco

Thu 8/4

1:45 p.m.-12:37 a.m.

1 stop7h 52m

C$ 585

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 1/4

7:00 a.m.-12:49 p.m.

1 stop8h 49m

San Francisco

Fri 9/4

1:45 p.m.-12:37 a.m.

1 stop7h 52m

C$ 585

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 22/4

5:30 a.m.-4:50 p.m.

2 stops14h 20m

San Francisco

Fri 30/4

6:00 a.m.-5:15 p.m.

1 stop8h 15m

C$ 595

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 12/1

5:30 a.m.-6:52 p.m.

2 stops16h 22m

San Francisco

Tue 19/1

6:00 a.m.-11:40 p.m.

2 stops14h 40m

C$ 682

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 14/1

5:30 a.m.-6:52 p.m.

2 stops16h 22m

San Francisco

Tue 19/1

6:00 a.m.-11:40 p.m.

2 stops14h 40m

C$ 684

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 3/12

7:45 a.m.-4:06 p.m.

1 stop11h 21m

San Francisco

Thu 10/12

11:25 a.m.-12:56 a.m.

1 stop10h 31m

C$ 1,026

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 13/4

2:55 p.m.-9:22 p.m.

1 stop9h 27m

San Francisco

Sat 17/4

8:19 a.m.-11:12 p.m.

1 stop11h 53m

C$ 1,927

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ottawa to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Ottawa and San Francisco?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 583 to C$ 978.
The lowest price recently found on this route was C$ 510.

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Ottawa is in April. Flight prices, which tend to average around C$ 568, are often lower during this time because this is during the off-season. The month of March is another great option to travel to San Francisco, with average flight prices from Ottawa averaging around C$ 607.

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

You are more likely to see cheaper flights to San Francisco from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 692 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Ottawa for as low as C$ 468 on momondo.

Can stopping save me money on Ottawa to San Francisco flights?

You could potentially save up to 18% on your flight if you consider stops on a Ottawa to San Francisco flight.

How have Ottawa to San Francisco flight prices changed over time?

As of November 2026, prices for Ottawa to San Francisco flights are approximately 16% more expensive when compared to flights at the same time last year.

When to book flights from Ottawa to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ottawa to San Francisco (YOW to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to San Francisco

Best price found	C$ 324
Fastest flight time	8h 44m
Direct flights	None

The best one-way flight to San Francisco from Ottawa in the past 72 hours is C$ 324. The best round-trip flight deal from Ottawa to San Francisco found on momondo in the last 72 hours is C$ 510.

The fastest flight from Ottawa to San Francisco takes 8h 44m

There are no direct flights from Ottawa to San Francisco. There are no popular flight routes from Ottawa to San Francisco.

Search flight deals

Frequently asked questions about flying from Ottawa to San Francisco

How far is Ottawa to San Francisco by plane?
Ottawa and San Francisco are 3915.3 km apart from one another. In terms of flight time, this usually takes a little over 8h 44m.
When did momondo last update prices for flights from Ottawa Airport to San Francisco Airport?
Prices for flights from Ottawa Airport to San Francisco Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ottawa Airport to San Francisco Airport?
There are 4 operators available for flights from Ottawa Airport to San Francisco Airport as of November 2026.
How old do you have to be to fly from Ottawa Airport to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ottawa to San Francisco?
Based on momondo bookings for flights between Ottawa and San Francisco, the leading airline is Porter Airlines, making up 42% of the total bookings. Other popular airlines include WestJet with 29%, Air Canada with 26%, and Delta with 3%.

Best airlines flying from Ottawa to San Francisco

Compare and see reviews for airlines that fly from Ottawa to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom C$ 379	Free Cancellation	Rating 7.2 3,437 reviews	Search WestJet flights
Porter Airlines	PriceFrom C$ 402	Free Cancellation	Rating 8.0 468 reviews	Search Porter Airlines flights
Air Canada	PriceFrom C$ 437	Free Cancellation	Rating 7.1 11,875 reviews	Search Air Canada flights
Delta	PriceFrom C$ 775	Free Cancellation	Rating 7.8 8,699 reviews	Search Delta flights
United Airlines	PriceFrom C$ 812	Free Cancellation	Rating 7.3 10,469 reviews	Search United Airlines flights

Sonoma

Milpitas

San Mateo

Lodi

Elk Grove

Santa Cruz

South San Francisco

Turlock

Pacific Grove

Yountville

Alameda

Palo Alto

Belmont

Cupertino

Fremont

Vallejo

Los Banos

Pleasant Hill

Mountain View

Burlingame

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Ottawa.

Can I find flights from Ottawa to San Francisco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ottawa to San Francisco flights to just show those with flexible booking policies.

How can momondo help me find flights from Ottawa to San Francisco?

Once all potential Ottawa to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ottawa to San Francisco right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Ottawa and alert you when they change.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Complete your trip

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Cheap flights from Ottawa to San Francisco from C$ 324

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to San Francisco departing on 16/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Ottawa to San Francisco

Cheap round-trip flights

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Big names, great deals

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Filter for what you want

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Porter Airlines flights from Ottawa to San Francisco

Our best Porter Airlines deals on Ottawa to San Francisco flight tickets

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets

momondo Fare Finder

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

See travel insights to San Francisco from

How to get the cheapest flight ticket from Ottawa to San Francisco

What is the typical price of a round-trip flight between Ottawa and San Francisco?

What is the cheapest month to fly to San Francisco?

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

Can stopping save me money on Ottawa to San Francisco flights?

How have Ottawa to San Francisco flight prices changed over time?

What is the cheapest airline that flies from Ottawa to San Francisco?

Which airlines fly to San Francisco?

Which airport is the most popular layover for flights between Ottawa and San Francisco?

Which layover airport offers the lowest fares from Ottawa to San Francisco?

Which layover airport has the shortest travel time from Ottawa to San Francisco?

Which layover airport has the shortest connection time from Ottawa to San Francisco?

When to book flights from Ottawa to San Francisco

Cheap Ottawa to San Francisco (YOW to SFO) flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ottawa to San Francisco

Best airlines flying from Ottawa to San Francisco

Compare and see reviews for airlines that fly from Ottawa to San Francisco with momondo

Travelling to a place near San Francisco?

Why use momondo?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favourite airline to San Francisco

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to San Francisco

List of cabin classes available on flights landing in San Francisco. Availability may vary depending on flight origin and airline.

Popular Cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ottawa

According to popular flight searches on momondo this year

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