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

WestJet and Delta are the most popular carriers operating from Ottawa to San Francisco

What airlines fly to San Francisco?

Air Canada, Porter Airlines and United Airlines 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 51% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 5 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

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?

As of September 2026, there are 4 operators available to choose from for flights from Ottawa Airport to San Francisco Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

$154 Cheap Flights from Ottawa to San Francisco in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to San Francisco

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:25 pm - 9:55 pmYOW Ottawa-SFO San Francisco

12h 30m2 stops Winnipeg Calgary

6:05 pm - 5:35 amSFO San Francisco-YOW Ottawa

8h 30m1 stop Calgary

$261WestJet

Thu, Oct 15 - Wed, Oct 21

8:15 pm - 9:55 pmYOW Ottawa-SFO San Francisco

28h 40m1 stop Calgary

6:00 am - 5:15 pmSFO San Francisco-YOW Ottawa

8h 15m1 stop Calgary

$286WestJet

Thu, Oct 1 - Mon, Oct 5

7:00 am - 12:45 pmYOW Ottawa-SFO San Francisco

8h 45m1 stop Toronto Pearson Intl

1:45 pm - 12:50 amSFO San Francisco-YOW Ottawa

8h 05m1 stop Toronto Pearson Intl

$308Porter Airlines

Thu, Oct 29 - Tue, Nov 3

7:00 am - 12:45 pmYOW Ottawa-SFO San Francisco

8h 45m1 stop Toronto Pearson Intl

3:05 pm - 12:01 amSFO San Francisco-YOW Ottawa

29h 56m2 stops Las Vegas Harry Reid Intl Calgary

$325Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

7:00 am - 12:45 pmYOW Ottawa-SFO San Francisco

8h 45m1 stop Toronto Pearson Intl

1:45 pm - 12:50 amSFO San Francisco-YOW Ottawa

8h 05m1 stop Toronto Pearson Intl

$326Porter Airlines

Tue, Oct 27 - Tue, Nov 17

8:15 pm - 9:55 pmYOW Ottawa-SFO San Francisco

28h 40m1 stop Calgary

1:45 pm - 12:50 amSFO San Francisco-YOW Ottawa

8h 05m1 stop Toronto Pearson Intl

$334Multiple Airlines

Fri, Oct 16 - Tue, Nov 3

7:50 am - 11:01 pmYOW Ottawa-SFO San Francisco

18h 11m2 stops Calgary Vancouver Intl

6:30 am - 11:11 pmSFO San Francisco-YOW Ottawa

13h 41m2 stops Vancouver Intl Calgary

$616Air Canada

Mon, Oct 26 - Fri, Oct 30

7:50 am - 11:01 pmYOW Ottawa-SFO San Francisco

18h 11m2 stops Calgary Vancouver Intl

6:30 am - 11:11 pmSFO San Francisco-YOW Ottawa

13h 41m2 stops Vancouver Intl Calgary

$616Air Canada

Mon, Oct 26 - Wed, Oct 28

6:15 am - 11:51 amYOW Ottawa-SFO San Francisco

8h 36m1 stop Chicago O'Hare Intl

9:24 pm - 2:09 pmSFO San Francisco-YOW Ottawa

13h 45m2 stops Denver Intl Chicago O'Hare Intl

$626United Airlines

Fri, Oct 30 - Sat, Nov 21

6:15 am - 1:12 pmYOW Ottawa-SFO San Francisco

9h 57m2 stops Chicago O'Hare Intl Denver Intl

11:59 pm - 1:11 pmSFO San Francisco-YOW Ottawa

10h 12m1 stop Newark

$626United Airlines

Tue, Oct 27 - Sat, Nov 21

Cheap last minute flights

Enter your travel dates to find the best prices.

8:15 pm - 9:55 pmYOW Ottawa-SFO San Francisco

28h 40m1 stop Calgary

6:00 am - 7:20 pmSFO San Francisco-YOW Ottawa

10h 20m1 stop Calgary

$470WestJet

Thu, Sep 17 - Thu, Sep 24

12:25 pm - 8:14 amYOW Ottawa-SFO San Francisco

22h 49m2 stops Winnipeg Las Vegas Harry Reid Intl

6:00 am - 7:20 pmSFO San Francisco-YOW Ottawa

10h 20m1 stop Calgary

$490Multiple Airlines

Thu, Sep 17 - Thu, Sep 24

8:15 pm - 9:55 pmYOW Ottawa-SFO San Francisco

28h 40m1 stop Calgary

6:00 am - 5:15 pmSFO San Francisco-YOW Ottawa

8h 15m1 stop Calgary

$491WestJet

Thu, Sep 17 - Tue, Sep 29

12:25 pm - 8:14 amYOW Ottawa-SFO San Francisco

22h 49m2 stops Winnipeg Las Vegas Harry Reid Intl

6:00 am - 5:15 pmSFO San Francisco-YOW Ottawa

8h 15m1 stop Calgary

$492Multiple Airlines

Thu, Sep 17 - Tue, Sep 29

7:20 am - 9:55 pmYOW Ottawa-SFO San Francisco

17h 35m1 stop Calgary

6:00 am - 7:20 pmSFO San Francisco-YOW Ottawa

10h 20m1 stop Calgary

$513WestJet

Fri, Sep 18 - Thu, Sep 24

10:37 am - 5:23 pmYOW Ottawa-SFO San Francisco

9h 46m1 stop Chicago O'Hare Intl

11:10 pm - 9:56 amSFO San Francisco-YOW Ottawa

7h 46m1 stop Washington, D.C. Dulles Intl

$702United Airlines

Sat, Sep 19 - Mon, Sep 28

6:00 am - 12:30 pmYOW Ottawa-SFO San Francisco

9h 30m1 stop Washington, D.C. Dulles Intl

12:45 pm - 11:54 pmSFO San Francisco-YOW Ottawa

8h 09m1 stop Washington, D.C. Dulles Intl

$702United Airlines

Thu, Sep 17 - Sat, Sep 26

7:00 am - 12:15 pmYOW Ottawa-SFO San Francisco

8h 15m1 stop Toronto Pearson Intl

1:20 pm - 12:25 amSFO San Francisco-YOW Ottawa

8h 05m1 stop Toronto Pearson Intl

$737Porter Airlines

Thu, Sep 17 - Mon, Sep 21

7:00 am - 12:15 pmYOW Ottawa-SFO San Francisco

8h 15m1 stop Toronto Pearson Intl

1:20 pm - 12:25 amSFO San Francisco-YOW Ottawa

8h 05m1 stop Toronto Pearson Intl

$883Porter Airlines

Wed, Sep 16 - Mon, Sep 21

5:10 am - 10:44 amYOW Ottawa-SFO San Francisco

8h 34m1 stop Toronto Pearson Intl

11:39 pm - 11:30 amSFO San Francisco-YOW Ottawa

8h 51m1 stop Montreal Pierre Elliott Trudeau Intl

$1,515Air Canada

Sat, Sep 19 - Sat, Sep 26

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WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets

WestJet

Oct 15

YOW12:25 pmOttawa

12h 30m

2 stops

SFO9:55 pmSan Francisco

Oct 21

SFO6:05 pmSan Francisco

8h 30m

1 stop

YOW5:35 amOttawa

$261

WestJet

Oct 1

YOW8:15 pmOttawa

28h 40m

1 stop

SFO9:55 pmSan Francisco

Oct 5

SFO6:00 amSan Francisco

8h 15m

1 stop

YOW5:15 pmOttawa

$286

WestJet

Oct 5

YOW8:15 pmOttawa

18h 45m

1 stop

SFO12:00 pmSan Francisco

Oct 14

SFO6:05 pmSan Francisco

8h 30m

1 stop

YOW5:35 amOttawa

$287

Delta flights from Ottawa to San Francisco

Our best Delta deals on Ottawa to San Francisco flight tickets

Delta

Sep 26

YOW6:55 amOttawa

10h 11m

2 stops

SFO2:06 pmSan Francisco

Sep 30

SFO6:00 amSan Francisco

10h 20m

1 stop

YOW7:20 pmOttawa

$418

Delta

Sep 26

YOW6:55 amOttawa

10h 11m

2 stops

SFO2:06 pmSan Francisco

Sep 29

SFO9:55 pmSan Francisco

16h 40m

2 stops

YOW5:35 pmOttawa

$449

Delta

Sep 26

YOW6:55 amOttawa

16h 03m

2 stops

SFO7:58 pmSan Francisco

Sep 30

SFO6:35 amSan Francisco

14h 45m

2 stops

YOW12:20 amOttawa

$463

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 10/15

12:25 pm-9:55 pm

2 stops12h 30m

San Francisco

Wed 10/21

6:05 pm-5:35 am

1 stop8h 30m

$261

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 10/1

8:15 pm-9:55 pm

1 stop28h 40m

San Francisco

Mon 10/5

6:00 am-5:15 pm

1 stop8h 15m

$286

Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 10/29

7:00 am-12:45 pm

1 stop8h 45m

San Francisco

Tue 11/3

1:45 pm-12:50 am

1 stop8h 05m

$308

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 10/28

7:00 am-12:45 pm

1 stop8h 45m

San Francisco

Wed 11/4

3:05 pm-12:01 am

2 stops29h 56m

$325

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 10/27

7:00 am-12:45 pm

1 stop8h 45m

San Francisco

Tue 11/17

1:45 pm-12:50 am

1 stop8h 05m

$326

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 10/16

8:15 pm-9:55 pm

1 stop28h 40m

San Francisco

Tue 11/3

1:45 pm-12:50 am

1 stop8h 05m

$334

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Mon 10/26

7:50 am-11:01 pm

2 stops18h 11m

San Francisco

Fri 10/30

6:30 am-11:11 pm

2 stops13h 41m

$616

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Mon 10/26

7:50 am-11:01 pm

2 stops18h 11m

San Francisco

Wed 10/28

6:30 am-11:11 pm

2 stops13h 41m

$616

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 10/30

6:15 am-11:51 am

1 stop8h 36m

San Francisco

Sat 11/21

9:24 pm-2:09 pm

2 stops13h 45m

$626

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 10/27

6:15 am-1:12 pm

2 stops9h 57m

San Francisco

Sat 11/21

11:59 pm-1:11 pm

1 stop10h 12m

$626

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

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 $313 to $601.
The lowest price recently found on this route was $261.

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $403.

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 $466 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 $331 on momondo.

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

As of September 2026, prices for Ottawa to San Francisco flights are approximately 8% cheaper 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	$154
Fastest flight time	8h 15m
Direct flights	None

The best one-way flight to San Francisco from Ottawa in the past 72 hours is $154. The best round-trip flight deal from Ottawa to San Francisco found on momondo in the last 72 hours is $261.

The fastest flight from Ottawa to San Francisco takes 8h 15m

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?
There are 2432.8 mi between Ottawa and San Francisco. Flights usually cover this in 8h 15m, depending on flying conditions and air traffic around both airports.
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?
As of September 2026, there are 4 operators available to choose from for flights from Ottawa Airport to San Francisco Airport.
How old do you have to be to fly from Ottawa Airport to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 41% of the total bookings. Other popular airlines include WestJet with 32%, Air Canada with 21%, and United Airlines with 7%.

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 $263	Free Cancellation	Rating 7.2 3,444 reviews	Search WestJet flights
United Airlines	PriceFrom $312	Free Cancellation	Rating 7.4 10,213 reviews	Search United Airlines flights
Porter Airlines	PriceFrom $316	Free Cancellation	Rating 8.0 460 reviews	Search Porter Airlines flights
Air Canada	PriceFrom $374	Free Cancellation	Rating 7.1 11,620 reviews	Search Air Canada flights

Santa Cruz

Carmel-by-the-Sea

Modesto

South San Francisco

Bodega Bay

Hayward

Fremont

Berkeley

Walnut Creek

Santa Clara

Sunnyvale

Vallejo

Salinas

Roseville

Half Moon Bay

Sonoma

Daly City

Milpitas

Marina

Pacific Grove

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ottawa to San Francisco. momondo saves you time and could save you money on your trip.

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

Yes. All flights to San Francisco from Ottawa on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to San Francisco from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 not ready to book a flight from Ottawa to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.

An easier way to manage your San Francisco trip

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Cheap flights from Ottawa to San Francisco from $154

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 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets

Delta flights from Ottawa to San Francisco

Our best Delta 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?

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

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

What airlines fly 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

Traveling 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 favorite 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

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According to popular flight searches on momondo this year

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