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Cheap flights from Ottawa to San Francisco from C$ 271

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 21/8. 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
6:55 a.m. - 4:40 p.m.
YOW
-
SFO
12h 45m
2 stops
WestJet Logo
6:00 a.m. - 12:20 a.m.
SFO
-
YOW
15h 20m
2 stops
C$ 506WestJet
Wed, 7 Oct - Mon, 12 Oct
WestJet Logo
8:15 p.m. - 12:00 p.m.
YOW
-
SFO
18h 45m
1 stop
WestJet Logo
6:00 a.m. - 7:20 p.m.
SFO
-
YOW
10h 20m
1 stop
C$ 513WestJet
Mon, 14 Sep - Mon, 21 Sep
Multiple Airlines Logo
8:15 p.m. - 12:00 p.m.
YOW
-
SFO
18h 45m
1 stop
Multiple Airlines Logo
4:30 p.m. - 12:55 p.m.
SFO
-
YOW
17h 25m
2 stops
C$ 554Multiple Airlines
Mon, 14 Sep - Mon, 21 Sep
Porter Airlines Logo
7:00 a.m. - 12:20 p.m.
YOW
-
SFO
8h 20m
1 stop
Porter Airlines Logo
1:20 p.m. - 12:25 a.m.
SFO
-
YOW
8h 05m
1 stop
C$ 559Porter Airlines
Wed, 7 Oct - Tue, 13 Oct
Multiple Airlines Logo
8:15 p.m. - 12:00 p.m.
YOW
-
SFO
18h 45m
1 stop
Multiple Airlines Logo
7:30 p.m. - 2:55 p.m.
SFO
-
YOW
16h 25m
3 stops
C$ 562Multiple Airlines
Mon, 14 Sep - Mon, 21 Sep
Porter Airlines Logo
7:00 a.m. - 12:45 p.m.
YOW
-
SFO
8h 45m
1 stop
Porter Airlines Logo
1:45 p.m. - 12:43 a.m.
SFO
-
YOW
7h 58m
1 stop
C$ 579Porter Airlines
Thu, 3 Dec - Tue, 8 Dec
United Airlines Logo
6:00 a.m. - 5:23 p.m.
YOW
-
SFO
14h 23m
3 stops
United Airlines Logo
9:30 p.m. - 9:56 a.m.
SFO
-
YOW
9h 26m
1 stop
C$ 840United Airlines
Mon, 31 Aug - Mon, 7 Sep
Air Canada Logo
10:05 a.m. - 3:40 p.m.
YOW
-
SFO
8h 35m
1 stop
Air Canada Logo
8:25 a.m. - 7:52 p.m.
SFO
-
YOW
8h 27m
1 stop
C$ 843Air Canada
Sat, 28 Nov - Tue, 15 Dec
Air Canada Logo
2:00 p.m. - 9:20 p.m.
YOW
-
SFO
10h 20m
1 stop
Air Canada Logo
12:00 p.m. - 12:40 a.m.
SFO
-
YOW
9h 40m
1 stop
C$ 847Air Canada
Sun, 10 Jan - Wed, 27 Jan
United Airlines Logo
2:00 p.m. - 8:35 p.m.
YOW
-
SFO
9h 35m
1 stop
United Airlines Logo
6:42 p.m. - 2:09 p.m.
SFO
-
YOW
16h 27m
1 stop
C$ 938United Airlines
Wed, 25 Nov - Mon, 30 Nov

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WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
14 Sep
YOW8:15 p.m.Ottawa
18h 45m
1 stop
SFO12:00 p.m.San Francisco
21 Sep
SFO6:00 a.m.San Francisco
10h 20m
1 stop
YOW7:20 p.m.Ottawa
C$ 513
WestJet
1 Oct
YOW12:25 p.m.Ottawa
12h 30m
2 stops
SFO9:55 p.m.San Francisco
10 Oct
SFO1:00 p.m.San Francisco
13h 35m
1 stop
YOW5:35 a.m.Ottawa
C$ 515
WestJet
2 Sep
YOW12:25 p.m.Ottawa
12h 30m
2 stops
SFO9:55 p.m.San Francisco
10 Sep
SFO6:00 a.m.San Francisco
8h 15m
1 stop
YOW5:15 p.m.Ottawa
C$ 516

Delta flights from Ottawa to San Francisco

Our best Delta deals on Ottawa to San Francisco flight tickets
Delta
3 Aug
YOW7:20 a.m.Ottawa
12h 20m
1 stop
SFO4:40 p.m.San Francisco
10 Aug
SFO6:05 p.m.San Francisco
8h 30m
1 stop
YOW5:35 a.m.Ottawa
C$ 988
Delta
6 Aug
YOW6:55 a.m.Ottawa
14h 18m
2 stops
SFO6:13 p.m.San Francisco
10 Aug
SFO6:05 p.m.San Francisco
8h 30m
1 stop
YOW5:35 a.m.Ottawa
C$ 991
Delta
13 Aug
YOW7:20 a.m.Ottawa
12h 20m
1 stop
SFO4:40 p.m.San Francisco
5 Sep
SFO6:00 a.m.San Francisco
8h 15m
1 stop
YOW5:15 p.m.Ottawa
C$ 1,000

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 1 August 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

Wed 7/10

6:55 a.m.-4:40 p.m.

2 stops12h 45m

San Francisco

Mon 12/10

6:00 a.m.-12:20 a.m.

2 stops15h 20m

C$ 506

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 14/9

8:15 p.m.-12:00 p.m.

1 stop18h 45m

San Francisco

Mon 21/9

6:00 a.m.-7:20 p.m.

1 stop10h 20m

C$ 513

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 14/9

8:15 p.m.-12:00 p.m.

1 stop18h 45m

San Francisco

Mon 21/9

4:30 p.m.-12:55 p.m.

2 stops17h 25m

C$ 554
Quickest round-trip

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 7/10

7:00 a.m.-12:20 p.m.

1 stop8h 20m

San Francisco

Tue 13/10

1:20 p.m.-12:25 a.m.

1 stop8h 05m

C$ 559

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 14/9

8:15 p.m.-12:00 p.m.

1 stop18h 45m

San Francisco

Mon 21/9

7:30 p.m.-2:55 p.m.

3 stops16h 25m

C$ 562

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 3/12

7:00 a.m.-12:45 p.m.

1 stop8h 45m

San Francisco

Tue 8/12

1:45 p.m.-12:43 a.m.

1 stop7h 58m

C$ 579

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 31/8

6:00 a.m.-5:23 p.m.

3 stops14h 23m

San Francisco

Mon 7/9

9:30 p.m.-9:56 a.m.

1 stop9h 26m

C$ 840

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 28/11

10:05 a.m.-3:40 p.m.

1 stop8h 35m

San Francisco

Tue 15/12

8:25 a.m.-7:52 p.m.

1 stop8h 27m

C$ 843

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 10/1

2:00 p.m.-9:20 p.m.

1 stop10h 20m

San Francisco

Wed 27/1

12:00 p.m.-12:40 a.m.

1 stop9h 40m

C$ 847

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 25/11

2:00 p.m.-8:35 p.m.

1 stop9h 35m

San Francisco

Mon 30/11

6:42 p.m.-2:09 p.m.

1 stop16h 27m

C$ 938

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 C$ 527 to C$ 792.
The lowest price recently found on this route was C$ 506.

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Ottawa is in September. Flight prices, which tend to average around C$ 505, are often lower during this time because this is during the off-season. The month of October is another great option to travel to San Francisco, with average flight prices from Ottawa averaging around C$ 524.

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 C$ 621 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$ 464 on momondo.

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

As of August 2026, prices for Ottawa to San Francisco flights are approximately 26% 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 19m

Direct flights

None
The fastest flight from Ottawa to San Francisco takes 8h 19m
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?

    Ottawa and San Francisco are 3915.3 km apart from one another. In terms of flight time, this usually takes a little over 8h 19m.

  • 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
WestJetPriceFrom C$ 354Free CancellationRating
7.2
3,424 reviews
Search WestJet flights
Porter AirlinesPriceFrom C$ 399Free CancellationRating
8.0
449 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 402Free CancellationRating
7.1
11,415 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 469Free CancellationRating
7.4
10,063 reviews
Search United Airlines flights

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Mateo
South San Francisco
Santa Cruz
Pacific Grove
Alameda
Palo Alto
Milpitas
Belmont
Carmel-by-the-Sea
Turlock
Pleasant Hill
Mountain View
Burlingame
Fremont
Santa Clara
Cupertino
Pacifica
Woodland
Los Banos
Roseville

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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