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Cheap flights from Ottawa to San Francisco from C$ 233

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 9/12. 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

Enter your travel dates to find the best prices.
Porter Airlines Logo
6:45 a.m. - 12:40 p.m.YOW-SFO
8h 55m1 stop
Porter Airlines Logo
1:40 p.m. - 12:41 a.m.SFO-YOW
8h 01m1 stop
C$ 396Porter Airlines
Find Deal
Tue, 9 Dec - Thu, 11 Dec
WestJet Logo
6:00 a.m. - 11:54 a.m.YOW-SFO
8h 54m1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 432WestJet
Find Deal
Sun, 3 May - Fri, 8 May
WestJet Logo
3:45 p.m. - 9:24 p.m.YOW-SFO
8h 39m1 stop
WestJet Logo
12:50 p.m. - 5:28 a.m.SFO-YOW
13h 38m2 stops
C$ 436WestJet
Find Deal
Sun, 3 May - Fri, 8 May
WestJet Logo
3:45 p.m. - 9:24 p.m.YOW-SFO
8h 39m1 stop
WestJet Logo
12:50 p.m. - 5:28 a.m.SFO-YOW
13h 38m2 stops
C$ 439WestJet
Find Deal
Sun, 3 May - Fri, 8 May
Multiple Airlines Logo
6:45 a.m. - 12:40 p.m.YOW-SFO
8h 55m1 stop
Multiple Airlines Logo
1:00 p.m. - 12:42 a.m.SFO-YOW
32h 42m2 stops
C$ 484Multiple Airlines
Find Deal
Tue, 9 Dec - Thu, 11 Dec
Porter Airlines Logo
6:45 a.m. - 12:40 p.m.YOW-SFO
8h 55m1 stop
Porter Airlines Logo
1:40 p.m. - 12:41 a.m.SFO-YOW
8h 01m1 stop
C$ 491Porter Airlines
Find Deal
Sat, 18 Apr - Tue, 28 Apr
Porter Airlines Logo
6:45 a.m. - 12:40 p.m.YOW-SFO
8h 55m1 stop
Porter Airlines Logo
1:40 p.m. - 12:43 a.m.SFO-YOW
8h 03m1 stop
C$ 494Porter Airlines
Find Deal
Fri, 20 Feb - Mon, 23 Feb
WestJet Logo
5:40 a.m. - 12:10 p.m.YOW-SFO
33h 30m2 stops
WestJet Logo
2:45 p.m. - 4:18 p.m.SFO-YOW
22h 33m2 stops
C$ 497WestJet
Find Deal
Sat, 18 Apr - Mon, 27 Apr
Porter Airlines Logo
6:45 a.m. - 12:40 p.m.YOW-SFO
8h 55m1 stop
Porter Airlines Logo
1:40 p.m. - 12:41 a.m.SFO-YOW
8h 01m1 stop
C$ 504Porter Airlines
Find Deal
Wed, 14 Jan - Sat, 24 Jan
Porter Airlines Logo
6:45 a.m. - 12:40 p.m.YOW-SFO
8h 55m1 stop
Porter Airlines Logo
1:40 p.m. - 12:41 a.m.SFO-YOW
8h 01m1 stop
C$ 507Porter Airlines
Find Deal
Sat, 18 Apr - Mon, 27 Apr

Porter Airlines flights from Ottawa to San Francisco

Our best Porter Airlines deals on Ottawa to San Francisco flight tickets
Porter Airlines
9 Dec
YOW6:45 a.m.Ottawa
8h 55m
1 stop
SFO12:40 p.m.San Francisco
11 Dec
SFO1:40 p.m.San Francisco
8h 01m
1 stop
YOW12:41 a.m.Ottawa
C$ 396
Find similar
Porter Airlines
18 Apr
YOW6:45 a.m.Ottawa
8h 55m
1 stop
SFO12:40 p.m.San Francisco
28 Apr
SFO1:40 p.m.San Francisco
8h 01m
1 stop
YOW12:41 a.m.Ottawa
C$ 491
Find similar
Porter Airlines
14 Jan
YOW6:45 a.m.Ottawa
8h 55m
1 stop
SFO12:40 p.m.San Francisco
24 Jan
SFO1:40 p.m.San Francisco
8h 01m
1 stop
YOW12:41 a.m.Ottawa
C$ 504
Find similar

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
3 May
YOW6:00 a.m.Ottawa
8h 54m
1 stop
SFO11:54 a.m.San Francisco
8 May
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 432
Find similar
WestJet
3 May
YOW3:45 p.m.Ottawa
8h 39m
1 stop
SFO9:24 p.m.San Francisco
8 May
SFO12:50 p.m.San Francisco
13h 38m
2 stops
YOW5:28 a.m.Ottawa
C$ 436
Find similar
WestJet
3 May
YOW3:45 p.m.Ottawa
8h 39m
1 stop
SFO9:24 p.m.San Francisco
8 May
SFO12:50 p.m.San Francisco
13h 38m
2 stops
YOW5:28 a.m.Ottawa
C$ 439
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 96,600 searches. Data last updated 18 November 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 9/12

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Thu 11/12

1:40 p.m.-12:41 a.m.

1 stop8h 01m

C$ 396

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 3/5

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Fri 8/5

12:50 p.m.-12:40 a.m.

1 stop8h 50m

C$ 432

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 3/5

3:45 p.m.-9:24 p.m.

1 stop8h 39m

San Francisco

Fri 8/5

12:50 p.m.-5:28 a.m.

2 stops13h 38m

C$ 436

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 3/5

3:45 p.m.-9:24 p.m.

1 stop8h 39m

San Francisco

Fri 8/5

12:50 p.m.-5:28 a.m.

2 stops13h 38m

C$ 439

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 9/12

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Thu 11/12

1:00 p.m.-12:42 a.m.

2 stops32h 42m

C$ 484

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 18/4

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Tue 28/4

1:40 p.m.-12:41 a.m.

1 stop8h 01m

C$ 491

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 20/2

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Mon 23/2

1:40 p.m.-12:43 a.m.

1 stop8h 03m

C$ 494

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 18/4

5:40 a.m.-12:10 p.m.

2 stops33h 30m

San Francisco

Mon 27/4

2:45 p.m.-4:18 p.m.

2 stops22h 33m

C$ 497

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 14/1

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Sat 24/1

1:40 p.m.-12:41 a.m.

1 stop8h 01m

C$ 504

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 18/4

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Mon 27/4

1:40 p.m.-12:41 a.m.

1 stop8h 01m

C$ 507

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?

The cheapest month to fly to San Francisco from Ottawa is in January. Flight prices, which tend to average around C$ 417, are often lower during this time because this is during the off-season. The month of May is another great option to travel to San Francisco, with average flight prices from Ottawa averaging around C$ 422.

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. Travellers who choose to depart for San Francisco on a Thursday will often find tickets for as low as C$ 585. On the other hand, Monday is the most expensive day to depart from Ottawa because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 779.

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

Flying to San Francisco from Ottawa at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 633 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the evening when prices are around C$ 695.

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 C$ 511 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$ 420 on momondo.

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

You could potentially save up to 35% 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 2025, prices for Ottawa to San Francisco flights are approximately 18% 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?

    Ottawa and San Francisco are 3915.6 km apart from one another. In terms of flight time, this usually takes a little over 8h 39m.

  • 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 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?

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 C$ 339Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 342Free CancellationRating
8.0
392 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 343Free CancellationRating
7.1
10,459 reviews
Search Air Canada flights
WestJetPriceFrom C$ 346Free CancellationRating
7.2
3,163 reviews
Search WestJet flights

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Mateo
Belmont
Los Altos
San Bruno
Santa Cruz
Newark
Fremont
Carmel-by-the-Sea
Turlock
South San Francisco
Palo Alto
Cupertino
Mill Valley
Morgan Hill
Los Banos
Mountain View
Pacifica
Woodland
Roseville
Berkeley

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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