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Cheap flights from Ottawa to San Francisco from C$ 258

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 9/2. 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

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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.
WestJet Logo
3:45 p.m. - 9:24 p.m.
YOW
-
SFO
8h 39m
1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.
SFO
-
YOW
8h 50m
1 stop
C$ 403WestJet
Fri, 15 May - Fri, 29 May
WestJet Logo
3:45 p.m. - 9:24 p.m.
YOW
-
SFO
8h 39m
1 stop
WestJet Logo
12:50 p.m. - 5:28 a.m.
SFO
-
YOW
13h 38m
2 stops
C$ 413WestJet
Fri, 15 May - Fri, 29 May
WestJet Logo
5:55 a.m. - 5:14 p.m.
YOW
-
SFO
14h 19m
2 stops
WestJet Logo
12:50 p.m. - 5:28 a.m.
SFO
-
YOW
13h 38m
2 stops
C$ 435WestJet
Fri, 15 May - Fri, 29 May
Multiple Airlines Logo
7:00 a.m. - 9:39 p.m.
YOW
-
SFO
41h 39m
2 stops
Multiple Airlines Logo
10:15 a.m. - 2:44 p.m.
SFO
-
YOW
25h 29m
1 stop
C$ 467Multiple Airlines
Mon, 23 Feb - Sat, 28 Feb
WestJet Logo
5:15 p.m. - 1:57 p.m.
YOW
-
SFO
23h 42m
2 stops
WestJet Logo
7:30 a.m. - 12:22 a.m.
SFO
-
YOW
13h 52m
2 stops
C$ 478WestJet
Wed, 6 May - Sat, 9 May
Multiple Airlines Logo
5:40 a.m. - 12:45 p.m.
YOW
-
SFO
10h 05m
1 stop
Multiple Airlines Logo
10:14 p.m. - 12:40 a.m.
SFO
-
YOW
23h 26m
2 stops
C$ 479Multiple Airlines
Wed, 18 Mar - Tue, 24 Mar
WestJet Logo
3:45 p.m. - 9:24 p.m.
YOW
-
SFO
8h 39m
1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.
SFO
-
YOW
8h 50m
1 stop
C$ 482WestJet
Wed, 6 May - Sat, 9 May
Multiple Airlines Logo
6:00 a.m. - 12:10 p.m.
YOW
-
SFO
9h 10m
1 stop
Multiple Airlines Logo
10:38 p.m. - 4:25 p.m.
SFO
-
YOW
38h 47m
2 stops
C$ 484Multiple Airlines
Tue, 3 Mar - Sat, 7 Mar
Multiple Airlines Logo
5:40 a.m. - 12:45 p.m.
YOW
-
SFO
10h 05m
1 stop
Multiple Airlines Logo
10:14 p.m. - 12:40 a.m.
SFO
-
YOW
23h 26m
2 stops
C$ 486Multiple Airlines
Tue, 17 Mar - Tue, 24 Mar
Multiple Airlines Logo
5:40 a.m. - 12:45 p.m.
YOW
-
SFO
10h 05m
1 stop
Multiple Airlines Logo
10:14 p.m. - 12:39 a.m.
SFO
-
YOW
47h 25m
2 stops
C$ 488Multiple Airlines
Wed, 18 Mar - Wed, 25 Mar

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
15 May
YOW3:45 p.m.Ottawa
8h 39m
1 stop
SFO9:24 p.m.San Francisco
29 May
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 403
WestJet
15 May
YOW3:45 p.m.Ottawa
8h 39m
1 stop
SFO9:24 p.m.San Francisco
29 May
SFO12:50 p.m.San Francisco
13h 38m
2 stops
YOW5:28 a.m.Ottawa
C$ 413
WestJet
15 May
YOW5:55 a.m.Ottawa
14h 19m
2 stops
SFO5:14 p.m.San Francisco
29 May
SFO12:50 p.m.San Francisco
13h 38m
2 stops
YOW5:28 a.m.Ottawa
C$ 435

American Airlines flights from Ottawa to San Francisco

Our best American Airlines deals on Ottawa to San Francisco flight tickets
American Airlines
21 Jan
YOW6:45 a.m.Ottawa
18h 40m
2 stops
SFO10:25 p.m.San Francisco
25 Jan
SFO6:00 a.m.San Francisco
15h 43m
2 stops
YOW12:43 a.m.Ottawa
C$ 1,098
American Airlines
21 Jan
YOW6:45 a.m.Ottawa
18h 40m
2 stops
SFO10:25 p.m.San Francisco
25 Jan
SFO7:01 p.m.San Francisco
18h 52m
3 stops
YOW4:53 p.m.Ottawa
C$ 1,195
American Airlines
21 Jan
YOW6:45 a.m.Ottawa
16h 25m
3 stops
SFO8:10 p.m.San Francisco
25 Jan
SFO7:01 p.m.San Francisco
18h 52m
3 stops
YOW4:53 p.m.Ottawa
C$ 1,287

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 16 January 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

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 15/5

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

1 stop8h 39m

San Francisco

Fri 29/5

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

1 stop8h 50m

C$ 403

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 15/5

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

1 stop8h 39m

San Francisco

Fri 29/5

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

2 stops13h 38m

C$ 413

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 15/5

5:55 a.m.-5:14 p.m.

2 stops14h 19m

San Francisco

Fri 29/5

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

2 stops13h 38m

C$ 435

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 23/2

7:00 a.m.-9:39 p.m.

2 stops41h 39m

San Francisco

Sat 28/2

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

1 stop25h 29m

C$ 467

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 6/5

5:15 p.m.-1:57 p.m.

2 stops23h 42m

San Francisco

Sat 9/5

7:30 a.m.-12:22 a.m.

2 stops13h 52m

C$ 478

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 18/3

5:40 a.m.-12:45 p.m.

1 stop10h 05m

San Francisco

Tue 24/3

10:14 p.m.-12:40 a.m.

2 stops23h 26m

C$ 479

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 6/5

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

1 stop8h 39m

San Francisco

Sat 9/5

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

1 stop8h 50m

C$ 482

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 3/3

6:00 a.m.-12:10 p.m.

1 stop9h 10m

San Francisco

Sat 7/3

10:38 p.m.-4:25 p.m.

2 stops38h 47m

C$ 484

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 17/3

5:40 a.m.-12:45 p.m.

1 stop10h 05m

San Francisco

Tue 24/3

10:14 p.m.-12:40 a.m.

2 stops23h 26m

C$ 486

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 18/3

5:40 a.m.-12:45 p.m.

1 stop10h 05m

San Francisco

Wed 25/3

10:14 p.m.-12:39 a.m.

2 stops47h 25m

C$ 488

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?

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Ottawa is in May. Flight prices, which tend to average around C$ 416, are often lower during this time because this is during the off-season. The month of April is another great option to travel to San Francisco, with average flight prices from Ottawa averaging around C$ 434.

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$ 425 on momondo.

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

You could potentially save up to 17% 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 January 2026, prices for Ottawa to San Francisco flights are approximately 2% 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 39m

Direct flights

None
The fastest flight from Ottawa to San Francisco takes 8h 39m
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 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
Porter AirlinesPriceFrom C$ 323Free CancellationRating
7.9
410 reviews
Search Porter Airlines flights
WestJetPriceFrom C$ 330Free CancellationRating
7.2
3,244 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 336Free CancellationRating
7.4
9,168 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 338Free CancellationRating
7.1
10,628 reviews
Search Air Canada 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
Milpitas
Carmel-by-the-Sea
Turlock
South San Francisco
Palo Alto
Burlingame
Santa Clara
Cupertino
Mill Valley
Pacifica
Morgan Hill
Los Banos
Mountain View
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

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