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Cheap flights from Ottawa to San Francisco from C$ 278

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 5/10. 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

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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
8:15 p.m. - 4:40 p.m.YOW  Ottawa-SFO San Francisco
23h 25m1 stop Calgary
WestJet Logo
6:00 a.m. - 11:35 a.m.SFO  San Francisco-YOW Ottawa
26h 35m2 stops Calgary Winnipeg
C$ 482WestJet
Tue, 15 Sep - Sun, 27 Sep
WestJet Logo
8:15 p.m. - 9:55 p.m.YOW  Ottawa-SFO San Francisco
28h 40m1 stop Calgary
WestJet Logo
6:00 a.m. - 5:35 a.m.SFO  San Francisco-YOW Ottawa
20h 35m1 stop Calgary
C$ 485WestJet
Tue, 15 Sep - Sun, 27 Sep
Multiple Airlines Logo
7:00 a.m. - 12:20 p.m.YOW  Ottawa-SFO San Francisco
8h 20m1 stop Toronto Pearson Intl
Multiple Airlines Logo
1:00 p.m. - 5:35 a.m.SFO  San Francisco-YOW Ottawa
13h 35m1 stop Calgary
C$ 560Multiple Airlines
Fri, 2 Oct - Sun, 11 Oct
Multiple Airlines Logo
1:20 p.m. - 8:42 a.m.YOW  Ottawa-SFO San Francisco
22h 22m2 stops Calgary Phoenix Sky Harbor Intl
Multiple Airlines Logo
1:00 p.m. - 12:45 a.m.SFO  San Francisco-YOW Ottawa
8h 45m1 stop Calgary
C$ 560Multiple Airlines
Sat, 24 Oct - Thu, 29 Oct
Porter Airlines Logo
7:00 a.m. - 12:45 p.m.YOW  Ottawa-SFO San Francisco
8h 45m1 stop Toronto Pearson Intl
Porter Airlines Logo
1:45 p.m. - 12:43 a.m.SFO  San Francisco-YOW Ottawa
7h 58m1 stop Toronto Pearson Intl
C$ 628Porter Airlines
Thu, 29 Oct - Sat, 7 Nov
Porter Airlines Logo
7:00 a.m. - 12:45 p.m.YOW  Ottawa-SFO San Francisco
8h 45m1 stop Toronto Pearson Intl
Porter Airlines Logo
1:45 p.m. - 12:43 a.m.SFO  San Francisco-YOW Ottawa
7h 58m1 stop Toronto Pearson Intl
C$ 632Porter Airlines
Fri, 20 Nov - Mon, 23 Nov
Air Canada Logo
7:45 a.m. - 4:06 p.m.YOW  Ottawa-SFO San Francisco
11h 21m1 stop Vancouver Intl
Air Canada Logo
11:25 a.m. - 12:56 a.m.SFO  San Francisco-YOW Ottawa
10h 31m1 stop Vancouver Intl
C$ 935Air Canada
Wed, 16 Dec - Wed, 6 Jan
Air Canada Logo
7:45 a.m. - 4:06 p.m.YOW  Ottawa-SFO San Francisco
11h 21m1 stop Vancouver Intl
Air Canada Logo
11:25 a.m. - 12:56 a.m.SFO  San Francisco-YOW Ottawa
10h 31m1 stop Vancouver Intl
C$ 935Air Canada
Thu, 17 Dec - Thu, 7 Jan
United Airlines Logo
6:15 a.m. - 5:30 p.m.YOW  Ottawa-SFO San Francisco
14h 15m1 stop Chicago O'Hare Intl
United Airlines Logo
11:45 p.m. - 2:12 p.m.SFO  San Francisco-YOW Ottawa
11h 27m1 stop Chicago O'Hare Intl
C$ 942United Airlines
Thu, 17 Dec - Fri, 1 Jan
United Airlines Logo
4:36 p.m. - 9:01 a.m.YOW  Ottawa-SFO San Francisco
19h 25m1 stop Chicago O'Hare Intl
United Airlines Logo
10:50 p.m. - 1:26 p.m.SFO  San Francisco-YOW Ottawa
11h 36m1 stop Newark
C$ 942United Airlines
Sat, 19 Dec - Wed, 6 Jan

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Delta flights from Ottawa to San Francisco

Our best Delta deals on Ottawa to San Francisco flight tickets
Delta
19 Aug
YOW6:00 a.m.Ottawa
9h 00m
1 stop
SFO12:00 p.m.San Francisco
29 Aug
SFO6:05 p.m.San Francisco
8h 30m
1 stop
YOW5:35 a.m.Ottawa
C$ 948
Delta
13 Aug
YOW6:55 a.m.Ottawa
10h 32m
2 stops
SFO2:27 p.m.San Francisco
16 Aug
SFO6:00 a.m.San Francisco
15h 20m
2 stops
YOW12:20 a.m.Ottawa
C$ 1,496
Delta
15 Aug
YOW6:55 a.m.Ottawa
10h 32m
2 stops
SFO2:27 p.m.San Francisco
17 Aug
SFO12:12 a.m.San Francisco
14h 23m
2 stops
YOW5:35 p.m.Ottawa
C$ 1,681

American Airlines flights from Ottawa to San Francisco

Our best American Airlines deals on Ottawa to San Francisco flight tickets
American Airlines
19 Aug
YOW8:40 a.m.Ottawa
13h 16m
2 stops
SFO6:56 p.m.San Francisco
29 Aug
SFO10:53 p.m.San Francisco
13h 02m
2 stops
YOW2:55 p.m.Ottawa
C$ 1,007
American Airlines
7 Aug
YOW7:00 a.m.Ottawa
15h 05m
3 stops
SFO7:05 p.m.San Francisco
8 Sep
SFO6:00 a.m.San Francisco
12h 35m
2 stops
YOW9:35 p.m.Ottawa
C$ 1,302
American Airlines
7 Aug
YOW7:00 a.m.Ottawa
15h 05m
3 stops
SFO7:05 p.m.San Francisco
10 Sep
SFO9:29 p.m.San Francisco
14h 26m
2 stops
YOW2:55 p.m.Ottawa
C$ 1,456

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 6 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 Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 15/9

8:15 p.m.-4:40 p.m.

1 stop23h 25m

San Francisco

Sun 27/9

6:00 a.m.-11:35 a.m.

2 stops26h 35m

C$ 482

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 15/9

8:15 p.m.-9:55 p.m.

1 stop28h 40m

San Francisco

Sun 27/9

6:00 a.m.-5:35 a.m.

1 stop20h 35m

C$ 485

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 2/10

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

1 stop8h 20m

San Francisco

Sun 11/10

1:00 p.m.-5:35 a.m.

1 stop13h 35m

C$ 560

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sat 24/10

1:20 p.m.-8:42 a.m.

2 stops22h 22m

San Francisco

Thu 29/10

1:00 p.m.-12:45 a.m.

1 stop8h 45m

C$ 560
Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 29/10

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

1 stop8h 45m

San Francisco

Sat 7/11

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

1 stop7h 58m

C$ 628

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 20/11

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

1 stop8h 45m

San Francisco

Mon 23/11

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

1 stop7h 58m

C$ 632

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 16/12

7:45 a.m.-4:06 p.m.

1 stop11h 21m

San Francisco

Wed 6/1

11:25 a.m.-12:56 a.m.

1 stop10h 31m

C$ 935

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 17/12

7:45 a.m.-4:06 p.m.

1 stop11h 21m

San Francisco

Thu 7/1

11:25 a.m.-12:56 a.m.

1 stop10h 31m

C$ 935

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 17/12

6:15 a.m.-5:30 p.m.

1 stop14h 15m

San Francisco

Fri 1/1

11:45 p.m.-2:12 p.m.

1 stop11h 27m

C$ 942

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sat 19/12

4:36 p.m.-9:01 a.m.

1 stop19h 25m

San Francisco

Wed 6/1

10:50 p.m.-1:26 p.m.

1 stop11h 36m

C$ 942

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$ 542 to C$ 833.
The lowest price recently found on this route was C$ 463.

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$ 513, are often lower during this time because this is during the off-season. The month of November is another great option to travel to San Francisco, with average flight prices from Ottawa averaging around C$ 531.

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$ 625 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$ 465 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 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?

    Ottawa and San Francisco are 3915.3 km apart from one another. In terms of flight time, this usually takes a little over 8h 20m.

  • 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
3,426 reviews
Search WestJet flights
Porter AirlinesPriceFrom C$ 399Free CancellationRating
8.0
450 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 403Free CancellationRating
7.1
11,429 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 470Free CancellationRating
7.4
10,072 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
Fremont
Alameda
Palo Alto
Milpitas
Belmont
Turlock
Carmel-by-the-Sea
Pleasant Hill
Mountain View
Burlingame
Cupertino
Santa Clara
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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