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Cheap flights from Ottawa to San Francisco from $202

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 9/21. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
1:00 pm - 12:40 am
SFO
-
YOW
8h 40m
1 stop
$306WestJet
Sat, Aug 22 - Sat, Aug 29
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
1:00 pm - 12:40 am
SFO
-
YOW
8h 40m
1 stop
$309WestJet
Sat, Aug 22 - Sat, Aug 29
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$312WestJet
Sun, Sep 6 - Sat, Sep 26
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
6:00 am - 7:20 pm
SFO
-
YOW
10h 20m
1 stop
$323WestJet
Mon, Aug 24 - Mon, Aug 31
WestJet Logo
6:55 am - 4:40 pm
YOW
-
SFO
12h 45m
2 stops
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$325WestJet
Sun, Sep 6 - Sat, Sep 26
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
6:00 am - 7:20 pm
SFO
-
YOW
10h 20m
1 stop
$344WestJet
Tue, Sep 1 - Tue, Sep 8
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
1:00 pm - 5:35 am
SFO
-
YOW
13h 35m
1 stop
$345WestJet
Mon, Oct 19 - Sat, Oct 24
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$347WestJet
Tue, Sep 1 - Tue, Sep 8
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$354WestJet
Mon, Aug 24 - Mon, Aug 31
WestJet Logo
1:20 pm - 9:55 pm
YOW
-
SFO
11h 35m
1 stop
WestJet Logo
1:00 pm - 5:35 am
SFO
-
YOW
13h 35m
1 stop
$358WestJet
Mon, Oct 19 - Sat, Oct 24

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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
Oct 7
YOW7:00 amOttawa
8h 20m
1 stop
SFO12:20 pmSan Francisco
Oct 13
SFO1:20 pmSan Francisco
8h 05m
1 stop
YOW12:25 amOttawa
$369
Porter Airlines
Nov 20
YOW7:00 amOttawa
8h 45m
1 stop
SFO12:45 pmSan Francisco
Nov 29
SFO1:45 pmSan Francisco
7h 58m
1 stop
YOW12:43 amOttawa
$382
Porter Airlines
Oct 7
YOW7:00 amOttawa
8h 20m
1 stop
SFO12:20 pmSan Francisco
Oct 13
SFO1:20 pmSan Francisco
8h 05m
1 stop
YOW12:25 amOttawa
$415

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
Sep 6
YOW6:00 amOttawa
9h 00m
1 stop
SFO12:00 pmSan Francisco
Sep 26
SFO6:00 amSan Francisco
8h 15m
1 stop
YOW5:15 pmOttawa
$312
WestJet
Aug 24
YOW6:00 amOttawa
9h 00m
1 stop
SFO12:00 pmSan Francisco
Aug 31
SFO6:00 amSan Francisco
10h 20m
1 stop
YOW7:20 pmOttawa
$323
WestJet
Sep 6
YOW6:55 amOttawa
12h 45m
2 stops
SFO4:40 pmSan Francisco
Sep 26
SFO6:00 amSan Francisco
8h 15m
1 stop
YOW5:15 pmOttawa
$325

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 July 23, 2026.
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

Cheapest round-trip

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 8/22

6:00 am-12:00 pm

1 stop9h 00m

San Francisco

Sat 8/29

1:00 pm-12:40 am

1 stop8h 40m

$306

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 8/22

12:25 pm-9:55 pm

2 stops12h 30m

San Francisco

Sat 8/29

1:00 pm-12:40 am

1 stop8h 40m

$309
Quickest round-trip

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 9/6

6:00 am-12:00 pm

1 stop9h 00m

San Francisco

Sat 9/26

6:00 am-5:15 pm

1 stop8h 15m

$312

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 8/24

6:00 am-12:00 pm

1 stop9h 00m

San Francisco

Mon 8/31

6:00 am-7:20 pm

1 stop10h 20m

$323

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 9/6

6:55 am-4:40 pm

2 stops12h 45m

San Francisco

Sat 9/26

6:00 am-5:15 pm

1 stop8h 15m

$325

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 9/1

6:00 am-12:00 pm

1 stop9h 00m

San Francisco

Tue 9/8

6:00 am-7:20 pm

1 stop10h 20m

$344

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 10/19

12:25 pm-9:55 pm

2 stops12h 30m

San Francisco

Sat 10/24

1:00 pm-5:35 am

1 stop13h 35m

$345

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 9/1

12:25 pm-9:55 pm

2 stops12h 30m

San Francisco

Tue 9/8

6:00 am-5:15 pm

1 stop8h 15m

$347

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 8/24

12:25 pm-9:55 pm

2 stops12h 30m

San Francisco

Mon 8/31

6:00 am-5:15 pm

1 stop8h 15m

$354

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 10/19

1:20 pm-9:55 pm

1 stop11h 35m

San Francisco

Sat 10/24

1:00 pm-5:35 am

1 stop13h 35m

$358

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 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 $370 to $576.
The lowest price recently found on this route was $306.

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 October is also cheap. Prices for this month can be found on momondo for an average of $367.

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 $437 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 July 2026, prices for Ottawa to San Francisco flights are approximately 4% 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

Fastest flight time

8h 20m

Direct flights

None
The fastest flight from Ottawa to San Francisco takes 8h 20m
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 20m, 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
WestJetPriceFrom $263Free CancellationRating
7.2
3,411 reviews
Search WestJet flights
Porter AirlinesPriceFrom $276Free CancellationRating
8.0
448 reviews
Search Porter Airlines flights
United AirlinesPriceFrom $312Free CancellationRating
7.4
10,024 reviews
Search United Airlines flights
Air CanadaPriceFrom $335Free CancellationRating
7.1
11,371 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
South San Francisco
Fremont
Hayward
Walnut Creek
Bodega Bay
Sonoma
Roseville
Santa Clara
Berkeley
Vallejo
Salinas
Sunnyvale
Burlingame
Daly City
Milpitas
Palo Alto
Big Sur

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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