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Cheap flights from Ottawa to San Francisco from $146

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 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ottawa to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
2:50 pm - 9:22 pmYOW-SFO
9h 32m1 stop
Air Canada Logo
6:00 pm - 6:43 amSFO-YOW
9h 43m1 stop
$274Air Canada
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
2:15 pm - 9:05 pmYOW-SFO
9h 50m1 stop
United Airlines Logo
8:55 pm - 4:32 pmSFO-YOW
16h 37m2 stops
$279United Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
Air Canada Logo
2:50 pm - 9:22 pmYOW-SFO
9h 32m1 stop
Air Canada Logo
2:30 pm - 1:38 amSFO-YOW
8h 08m1 stop
$280Air Canada
Find Deal
Wed, Mar 4 - Thu, Mar 5
Air Canada Logo
4:10 pm - 9:34 pmYOW-SFO
8h 24m1 stop
Air Canada Logo
6:00 pm - 3:00 pmSFO-YOW
18h 00m2 stops
$299Air Canada
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Sat, Nov 22 - Sun, Nov 30
Multiple Airlines Logo
6:45 am - 12:40 pmYOW-SFO
8h 55m1 stop
Multiple Airlines Logo
8:43 am - 12:42 amSFO-YOW
12h 59m2 stops
$308Multiple Airlines
Find Deal
Wed, Nov 26 - Thu, Dec 4
WestJet Logo
7:15 pm - 12:12 pmYOW-SFO
19h 57m2 stops
WestJet Logo
1:00 pm - 6:21 pmSFO-YOW
26h 21m2 stops
$323WestJet
Find Deal
Mon, Nov 24 - Thu, Dec 4
WestJet Logo
7:15 pm - 12:12 pmYOW-SFO
19h 57m2 stops
WestJet Logo
1:00 pm - 12:42 amSFO-YOW
32h 42m2 stops
$327WestJet
Find Deal
Mon, Nov 24 - Tue, Dec 2
Porter Airlines Logo
6:45 am - 12:40 pmYOW-SFO
8h 55m1 stop
Porter Airlines Logo
1:40 pm - 12:39 amSFO-YOW
7h 59m1 stop
$328Porter Airlines
Find Deal
Wed, Nov 12 - Wed, Nov 19
Delta Logo
5:40 am - 2:15 pmYOW-SFO
11h 35m2 stops
Delta Logo
7:15 am - 12:42 amSFO-YOW
14h 27m2 stops
$355Delta
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Wed, Nov 12 - Mon, Nov 17
Multiple Airlines Logo
5:40 am - 12:40 pmYOW-SFO
10h 00m1 stop
Multiple Airlines Logo
8:43 am - 12:42 amSFO-YOW
12h 59m2 stops
$364Multiple Airlines
Find Deal
Fri, Nov 21 - Thu, Dec 4

United Airlines flights from Ottawa to San Francisco

Our best United Airlines deals on Ottawa to San Francisco flight tickets
United Airlines
Nov 12
YOW2:15 pmOttawa
9h 50m
1 stop
SFO9:05 pmSan Francisco
Nov 17
SFO8:55 pmSan Francisco
16h 37m
2 stops
YOW4:32 pmOttawa
$279
Find similar
United Airlines
Nov 9
YOW7:30 pmOttawa
8h 45m
1 stop
SFO1:15 amSan Francisco
Nov 16
SFO10:40 pmSan Francisco
8h 46m
1 stop
YOW10:26 amOttawa
$319
Find similar
United Airlines
Nov 7
YOW2:15 pmOttawa
14h 00m
1 stop
SFO1:15 amSan Francisco
Nov 9
SFO12:43 amSan Francisco
10h 47m
2 stops
YOW2:30 pmOttawa
$332
Find similar

Air Canada flights from Ottawa to San Francisco

Our best Air Canada deals on Ottawa to San Francisco flight tickets
Air Canada
Dec 4
YOW2:50 pmOttawa
9h 32m
1 stop
SFO9:22 pmSan Francisco
Dec 8
SFO6:00 pmSan Francisco
9h 43m
1 stop
YOW6:43 amOttawa
$274
Find similar
Air Canada
Mar 4
YOW2:50 pmOttawa
9h 32m
1 stop
SFO9:22 pmSan Francisco
Mar 5
SFO2:30 pmSan Francisco
8h 08m
1 stop
YOW1:38 amOttawa
$280
Find similar
Air Canada
Nov 22
YOW4:10 pmOttawa
8h 24m
1 stop
SFO9:34 pmSan Francisco
Nov 30
SFO6:00 pmSan Francisco
18h 00m
2 stops
YOW3:00 pmOttawa
$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 October 14, 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

Thu 12/4

2:50 pm-9:22 pm

1 stop9h 32m

San Francisco

Mon 12/8

6:00 pm-6:43 am

1 stop9h 43m

$274

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 11/12

2:15 pm-9:05 pm

1 stop9h 50m

San Francisco

Mon 11/17

8:55 pm-4:32 pm

2 stops16h 37m

$279

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 3/4

2:50 pm-9:22 pm

1 stop9h 32m

San Francisco

Thu 3/5

2:30 pm-1:38 am

1 stop8h 08m

$280

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 11/22

4:10 pm-9:34 pm

1 stop8h 24m

San Francisco

Sun 11/30

6:00 pm-3:00 pm

2 stops18h 00m

$299

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 11/26

6:45 am-12:40 pm

1 stop8h 55m

San Francisco

Thu 12/4

8:43 am-12:42 am

2 stops12h 59m

$308

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 11/24

7:15 pm-12:12 pm

2 stops19h 57m

San Francisco

Thu 12/4

1:00 pm-6:21 pm

2 stops26h 21m

$323

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 11/24

7:15 pm-12:12 pm

2 stops19h 57m

San Francisco

Tue 12/2

1:00 pm-12:42 am

2 stops32h 42m

$327

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 11/12

6:45 am-12:40 pm

1 stop8h 55m

San Francisco

Wed 11/19

1:40 pm-12:39 am

1 stop7h 59m

$328

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 11/12

5:40 am-2:15 pm

2 stops11h 35m

San Francisco

Mon 11/17

7:15 am-12:42 am

2 stops14h 27m

$355

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 11/21

5:40 am-12:40 pm

1 stop10h 00m

San Francisco

Thu 12/4

8:43 am-12:42 am

2 stops12h 59m

$364

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 $308.

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 $366 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 $295 on momondo.

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

As of October 2025, prices for Ottawa to San Francisco flights are approximately 19% 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.
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  • 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 24m, 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
8,977 reviews
Search United Airlines flights
WestJetPriceFrom $247Free CancellationRating
7.2
3,125 reviews
Search WestJet flights
Porter AirlinesPriceFrom $259Free CancellationRating
8.0
379 reviews
Search Porter Airlines flights
Air CanadaPriceFrom $274Free CancellationRating
7.1
10,298 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
Bodega Bay
Calistoga
Hayward
Roseville
Big Sur
Santa Clara
Fremont
Daly City
Berkeley
Walnut Creek
Half Moon Bay
Vallejo
Salinas
Redwood City
Turlock
South San Francisco

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.

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