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Cheap flights from Ottawa to San Francisco from $168

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 11/25. 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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Find the cheapest flights from Ottawa to San Francisco

Cheap round-trip flights

WestJet Logo
3:35 pm - 9:24 pmYOW-SFO
8h 49m1 stop
WestJet Logo
12:50 pm - 12:40 amSFO-YOW
8h 50m1 stop
$294WestJet
Find Deal
Tue, Oct 7 - Fri, Oct 17
WestJet Logo
6:00 am - 11:54 amYOW-SFO
8h 54m1 stop
WestJet Logo
12:50 pm - 12:40 amSFO-YOW
8h 50m1 stop
$295WestJet
Find Deal
Sun, Oct 12 - Thu, Oct 16
WestJet Logo
12:20 pm - 9:24 pmYOW-SFO
12h 04m2 stops
WestJet Logo
12:50 pm - 12:40 amSFO-YOW
8h 50m1 stop
$299WestJet
Find Deal
Tue, Oct 7 - Sun, Oct 12
Logo
8:45 am - 9:24 pmYOW-SFO
15h 39m2 stops
Logo
10:15 am - 2:44 pmSFO-YOW
25h 29m1 stop
$311
Find Deal
Mon, Sep 29 - Wed, Oct 1
Logo
7:00 am - 12:23 pmYOW-SFO
8h 23m1 stop
Logo
10:15 am - 2:44 pmSFO-YOW
25h 29m1 stop
$325
Find Deal
Mon, Sep 29 - Wed, Oct 1
Porter Airlines Logo
7:00 am - 12:23 pmYOW-SFO
8h 23m1 stop
Porter Airlines Logo
1:25 pm - 12:21 amSFO-YOW
7h 56m1 stop
$361Porter Airlines
Find Deal
Mon, Sep 22 - Fri, Sep 26
Air Canada Logo
6:00 am - 11:11 amYOW-SFO
8h 11m1 stop
Air Canada Logo
11:40 am - 10:04 pmSFO-YOW
7h 24m1 stop
$365Air Canada
Find Deal
Thu, Oct 9 - Tue, Oct 14
Porter Airlines Logo
7:00 am - 12:23 pmYOW-SFO
8h 23m1 stop
Porter Airlines Logo
1:25 pm - 12:21 amSFO-YOW
7h 56m1 stop
$370Porter Airlines
Find Deal
Sun, Sep 21 - Fri, Sep 26
United Airlines Logo
5:25 pm - 11:59 pmYOW-SFO
9h 34m1 stop
United Airlines Logo
6:35 am - 9:35 pmSFO-YOW
12h 00m2 stops
$371United Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
United Airlines Logo
7:29 pm - 12:55 amYOW-SFO
8h 26m1 stop
United Airlines Logo
10:40 pm - 10:26 amSFO-YOW
8h 46m1 stop
$383United Airlines
Find Deal
Thu, Oct 23 - Wed, Oct 29

United Airlines flights from Ottawa to San Francisco

Our best United Airlines deals on Ottawa to San Francisco flight tickets
United Airlines
Oct 11
YOW5:25 pmOttawa
9h 34m
1 stop
SFO11:59 pmSan Francisco
Oct 18
SFO6:35 amSan Francisco
12h 00m
2 stops
YOW9:35 pmOttawa
$371
Find similar
United Airlines
Oct 23
YOW7:29 pmOttawa
8h 26m
1 stop
SFO12:55 amSan Francisco
Oct 29
SFO10:40 pmSan Francisco
8h 46m
1 stop
YOW10:26 amOttawa
$383
Find similar
United Airlines
Sep 3
YOW10:37 amOttawa
9h 42m
2 stops
SFO5:19 pmSan Francisco
Sep 4
SFO6:42 pmSan Francisco
12h 16m
2 stops
YOW9:58 amOttawa
$894
Find similar

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
Oct 7
YOW3:35 pmOttawa
8h 49m
1 stop
SFO9:24 pmSan Francisco
Oct 17
SFO12:50 pmSan Francisco
8h 50m
1 stop
YOW12:40 amOttawa
$294
Find similar
WestJet
Oct 12
YOW6:00 amOttawa
8h 54m
1 stop
SFO11:54 amSan Francisco
Oct 16
SFO12:50 pmSan Francisco
8h 50m
1 stop
YOW12:40 amOttawa
$295
Find similar
WestJet
Oct 7
YOW12:20 pmOttawa
12h 04m
2 stops
SFO9:24 pmSan Francisco
Oct 12
SFO12:50 pmSan Francisco
8h 50m
1 stop
YOW12:40 amOttawa
$299
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 28, 2025.
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

Tue 10/7

3:35 pm-9:24 pm

1 stop8h 49m

San Francisco

Fri 10/17

12:50 pm-12:40 am

1 stop8h 50m

$294

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 10/12

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Thu 10/16

12:50 pm-12:40 am

1 stop8h 50m

$295

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 10/7

12:20 pm-9:24 pm

2 stops12h 04m

San Francisco

Sun 10/12

12:50 pm-12:40 am

1 stop8h 50m

$299

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 9/29

8:45 am-9:24 pm

2 stops15h 39m

San Francisco

Wed 10/1

10:15 am-2:44 pm

1 stop25h 29m

$311

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 9/29

7:00 am-12:23 pm

1 stop8h 23m

San Francisco

Wed 10/1

10:15 am-2:44 pm

1 stop25h 29m

$325

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 9/22

7:00 am-12:23 pm

1 stop8h 23m

San Francisco

Fri 9/26

1:25 pm-12:21 am

1 stop7h 56m

$361

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 10/9

6:00 am-11:11 am

1 stop8h 11m

San Francisco

Tue 10/14

11:40 am-10:04 pm

1 stop7h 24m

$365

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 9/21

7:00 am-12:23 pm

1 stop8h 23m

San Francisco

Fri 9/26

1:25 pm-12:21 am

1 stop7h 56m

$370

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 10/11

5:25 pm-11:59 pm

1 stop9h 34m

San Francisco

Sat 10/18

6:35 am-9:35 pm

2 stops12h 00m

$371

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 10/23

7:29 pm-12:55 am

1 stop8h 26m

San Francisco

Wed 10/29

10:40 pm-10:26 am

1 stop8h 46m

$383

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

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

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of January, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $315.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Ottawa to San Francisco is on a Thursday when prices can be found for as low as $458. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $645.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Ottawa to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $463. Flights in the morning are often more expensive with an average ticket price of $536.

How far in advance should I book a flight 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 $370 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 $292 on momondo.

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

As of August 2025, prices for Ottawa to San Francisco flights are approximately 33% 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

Direct flights

None
There are no direct flights from Ottawa to San Francisco. There are no popular flight routes from Ottawa to San Francisco.
Search flight deals

  • How far is Ottawa to San Francisco by plane?

    There are 2433.0 mi between Ottawa and San Francisco. Flights usually cover this in 8h 11m, 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?

  • 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?

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
United AirlinesPriceFrom $241Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
WestJetPriceFrom $247Free CancellationRating
7.2
3,063 reviews
Search WestJet flights
Porter AirlinesPriceFrom $259Free CancellationRating
8.0
349 reviews
Search Porter Airlines flights
Air CanadaPriceFrom $274Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Calistoga
Hayward
Bodega Bay
Roseville
Santa Clara
Big Sur
Daly City
Fremont
Berkeley
Walnut Creek
Half Moon Bay
South San Francisco
Vallejo
Redwood City
Pacific Grove
Salinas

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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