Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ottawa to San Francisco from C$ 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 29/9. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ottawa to San Francisco

Cheap round-trip flights

WestJet Logo
7:15 p.m. - 11:54 a.m.YOW-SFO
19h 39m1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 400WestJet
Find Deal
Tue, 14 Oct - Tue, 21 Oct
WestJet Logo
7:15 p.m. - 11:54 a.m.YOW-SFO
19h 39m1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 403WestJet
Find Deal
Tue, 30 Sep - Wed, 22 Oct
WestJet Logo
7:15 p.m. - 9:24 p.m.YOW-SFO
29h 09m1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 407WestJet
Find Deal
Thu, 2 Oct - Sun, 12 Oct
United Airlines Logo
6:05 a.m. - 1:50 p.m.YOW-SFO
10h 45m1 stop
United Airlines Logo
12:43 a.m. - 2:30 p.m.SFO-YOW
10h 47m2 stops
C$ 413United Airlines
Find Deal
Wed, 22 Oct - Wed, 29 Oct
WestJet Logo
5:15 p.m. - 9:24 p.m.YOW-SFO
31h 09m2 stops
WestJet Logo
12:50 p.m. - 4:19 p.m.SFO-YOW
24h 29m2 stops
C$ 414WestJet
Find Deal
Thu, 2 Oct - Sun, 12 Oct
WestJet Logo
5:15 p.m. - 9:24 p.m.YOW-SFO
31h 09m2 stops
WestJet Logo
1:00 p.m. - 12:42 a.m.SFO-YOW
32h 42m2 stops
C$ 415WestJet
Find Deal
Thu, 23 Oct - Tue, 28 Oct
United Airlines Logo
5:15 a.m. - 1:35 p.m.YOW-SFO
11h 20m2 stops
United Airlines Logo
12:43 a.m. - 2:30 p.m.SFO-YOW
10h 47m2 stops
C$ 421United Airlines
Find Deal
Wed, 22 Oct - Wed, 29 Oct
Multiple Airlines Logo
6:55 p.m. - 12:12 p.m.YOW-SFO
20h 17m1 stop
Multiple Airlines Logo
10:15 a.m. - 2:01 p.m.SFO-YOW
48h 46m2 stops
C$ 451Multiple Airlines
Find Deal
Mon, 3 Nov - Sun, 30 Nov
Multiple Airlines Logo
6:00 a.m. - 10:55 a.m.YOW-SFO
31h 55m2 stops
Multiple Airlines Logo
10:15 a.m. - 2:44 p.m.SFO-YOW
25h 29m1 stop
C$ 461Multiple Airlines
Find Deal
Mon, 13 Oct - Thu, 16 Oct
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$ 560Porter Airlines
Find Deal
Sun, 16 Nov - Sat, 22 Nov

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
14 Oct
YOW7:15 p.m.Ottawa
19h 39m
1 stop
SFO11:54 a.m.San Francisco
21 Oct
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 400
Find similar
WestJet
30 Sep
YOW7:15 p.m.Ottawa
19h 39m
1 stop
SFO11:54 a.m.San Francisco
22 Oct
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 403
Find similar
WestJet
2 Oct
YOW7:15 p.m.Ottawa
29h 09m
1 stop
SFO9:24 p.m.San Francisco
12 Oct
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 407
Find similar

United Airlines flights from Ottawa to San Francisco

Our best United Airlines deals on Ottawa to San Francisco flight tickets
United Airlines
22 Oct
YOW6:05 a.m.Ottawa
10h 45m
1 stop
SFO1:50 p.m.San Francisco
29 Oct
SFO12:43 a.m.San Francisco
10h 47m
2 stops
YOW2:30 p.m.Ottawa
C$ 413
Find similar
United Airlines
22 Oct
YOW5:15 a.m.Ottawa
11h 20m
2 stops
SFO1:35 p.m.San Francisco
29 Oct
SFO12:43 a.m.San Francisco
10h 47m
2 stops
YOW2:30 p.m.Ottawa
C$ 421
Find similar
United Airlines
14 Oct
YOW7:29 p.m.Ottawa
16h 50m
1 stop
SFO9:19 a.m.San Francisco
17 Oct
SFO11:56 p.m.San Francisco
11h 17m
1 stop
YOW2:13 p.m.Ottawa
C$ 429
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 17 September 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 14/10

7:15 p.m.-11:54 a.m.

1 stop19h 39m

San Francisco

Tue 21/10

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

1 stop8h 50m

C$ 400

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 30/9

7:15 p.m.-11:54 a.m.

1 stop19h 39m

San Francisco

Wed 22/10

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

1 stop8h 50m

C$ 403

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 2/10

7:15 p.m.-9:24 p.m.

1 stop29h 09m

San Francisco

Sun 12/10

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

1 stop8h 50m

C$ 407

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 22/10

6:05 a.m.-1:50 p.m.

1 stop10h 45m

San Francisco

Wed 29/10

12:43 a.m.-2:30 p.m.

2 stops10h 47m

C$ 413

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 2/10

5:15 p.m.-9:24 p.m.

2 stops31h 09m

San Francisco

Sun 12/10

12:50 p.m.-4:19 p.m.

2 stops24h 29m

C$ 414

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 23/10

5:15 p.m.-9:24 p.m.

2 stops31h 09m

San Francisco

Tue 28/10

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

2 stops32h 42m

C$ 415

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 22/10

5:15 a.m.-1:35 p.m.

2 stops11h 20m

San Francisco

Wed 29/10

12:43 a.m.-2:30 p.m.

2 stops10h 47m

C$ 421

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 3/11

6:55 p.m.-12:12 p.m.

1 stop20h 17m

San Francisco

Sun 30/11

10:15 a.m.-2:01 p.m.

2 stops48h 46m

C$ 451

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 13/10

6:00 a.m.-10:55 a.m.

2 stops31h 55m

San Francisco

Thu 16/10

10:15 a.m.-2:44 p.m.

1 stop25h 29m

C$ 461

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 16/11

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

1 stop8h 55m

San Francisco

Sat 22/11

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

1 stop8h 01m

C$ 560

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

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$ 413, 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$ 433.

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$ 573. 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$ 764.

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$ 621 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$ 681.

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$ 502 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$ 406 on momondo.

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

You could potentially save up to 48% 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 September 2025, prices for Ottawa to San Francisco flights are approximately 12% 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?

    Ottawa and San Francisco are 3915.6 km apart from one another. In terms of flight time, this usually takes a little over 8h 26m.

  • 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$ 332Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 337Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Porter AirlinesPriceFrom C$ 337Free CancellationRating
7.9
365 reviews
Search Porter Airlines flights
WestJetPriceFrom C$ 340Free CancellationRating
7.2
3,095 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
Mountain View
Half Moon Bay
Sunnyvale
Cupertino
Mill Valley
Los Banos
Palo Alto
Pacifica
Roseville
Woodland

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 17/10
Fri 24/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States