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Cheap flights from Ottawa to San Francisco from C$ 231

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 25/11. 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

WestJet Logo
3:35 p.m. - 9:24 p.m.YOW-SFO
8h 49m1 stop
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 405WestJet
Find Deal
Tue, 7 Oct - Sun, 12 Oct
WestJet Logo
12:20 p.m. - 9:24 p.m.YOW-SFO
12h 04m2 stops
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 409WestJet
Find Deal
Fri, 26 Sep - Fri, 3 Oct
WestJet Logo
12:20 p.m. - 9:24 p.m.YOW-SFO
12h 04m2 stops
WestJet Logo
12:50 p.m. - 12:40 a.m.SFO-YOW
8h 50m1 stop
C$ 412WestJet
Find Deal
Tue, 7 Oct - Sun, 12 Oct
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$ 417WestJet
Find Deal
Sun, 21 Sep - Tue, 23 Sep
Logo
6:30 p.m. - 1:57 p.m.YOW-SFO
22h 27m2 stops
Logo
10:15 a.m. - 2:44 p.m.SFO-YOW
25h 29m1 stop
C$ 439
Find Deal
Sun, 21 Sep - Tue, 23 Sep
Logo
5:45 p.m. - 12:12 p.m.YOW-SFO
21h 27m1 stop
Logo
10:15 a.m. - 7:54 p.m.SFO-YOW
30h 39m1 stop
C$ 460
Find Deal
Wed, 26 Nov - Sun, 30 Nov
Air Canada Logo
6:00 a.m. - 11:11 a.m.YOW-SFO
8h 11m1 stop
Air Canada Logo
11:40 a.m. - 10:04 p.m.SFO-YOW
7h 24m1 stop
C$ 493Air Canada
Find Deal
Thu, 9 Oct - Mon, 13 Oct
Air Canada Logo
7:45 a.m. - 3:35 p.m.YOW-SFO
10h 50m1 stop
Air Canada Logo
6:00 p.m. - 7:13 a.m.SFO-YOW
10h 13m1 stop
C$ 502Air Canada
Find Deal
Wed, 12 Nov - Wed, 19 Nov
Porter Airlines Logo
7:00 a.m. - 12:23 p.m.YOW-SFO
8h 23m1 stop
Porter Airlines Logo
1:25 p.m. - 12:21 a.m.SFO-YOW
7h 56m1 stop
C$ 509Porter Airlines
Find Deal
Sun, 21 Sep - Fri, 26 Sep
United Airlines Logo
5:25 p.m. - 11:59 p.m.YOW-SFO
9h 34m1 stop
United Airlines Logo
6:35 a.m. - 9:35 p.m.SFO-YOW
12h 00m2 stops
C$ 511United Airlines
Find Deal
Sat, 11 Oct - Sat, 18 Oct

United Airlines flights from Ottawa to San Francisco

Our best United Airlines deals on Ottawa to San Francisco flight tickets
United Airlines
11 Oct
YOW5:25 p.m.Ottawa
9h 34m
1 stop
SFO11:59 p.m.San Francisco
18 Oct
SFO6:35 a.m.San Francisco
12h 00m
2 stops
YOW9:35 p.m.Ottawa
C$ 511
Find similar
United Airlines
3 Sep
YOW10:37 a.m.Ottawa
9h 42m
2 stops
SFO5:19 p.m.San Francisco
4 Sep
SFO6:42 p.m.San Francisco
12h 16m
2 stops
YOW9:58 a.m.Ottawa
C$ 1,231
Find similar

WestJet flights from Ottawa to San Francisco

Our best WestJet deals on Ottawa to San Francisco flight tickets
WestJet
7 Oct
YOW3:35 p.m.Ottawa
8h 49m
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$ 405
Find similar
WestJet
26 Sep
YOW12:20 p.m.Ottawa
12h 04m
2 stops
SFO9:24 p.m.San Francisco
3 Oct
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 409
Find similar
WestJet
7 Oct
YOW12:20 p.m.Ottawa
12h 04m
2 stops
SFO9:24 p.m.San Francisco
12 Oct
SFO12:50 p.m.San Francisco
8h 50m
1 stop
YOW12:40 a.m.Ottawa
C$ 412
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 29 August 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 7/10

3:35 p.m.-9:24 p.m.

1 stop8h 49m

San Francisco

Sun 12/10

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

1 stop8h 50m

C$ 405

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 26/9

12:20 p.m.-9:24 p.m.

2 stops12h 04m

San Francisco

Fri 3/10

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

1 stop8h 50m

C$ 409

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 7/10

12:20 p.m.-9:24 p.m.

2 stops12h 04m

San Francisco

Sun 12/10

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

1 stop8h 50m

C$ 412

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 21/9

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

1 stop8h 54m

San Francisco

Tue 23/9

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

1 stop8h 50m

C$ 417

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 21/9

6:30 p.m.-1:57 p.m.

2 stops22h 27m

San Francisco

Tue 23/9

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

1 stop25h 29m

C$ 439

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 26/11

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

1 stop21h 27m

San Francisco

Sun 30/11

10:15 a.m.-7:54 p.m.

1 stop30h 39m

C$ 460

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 9/10

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

1 stop8h 11m

San Francisco

Mon 13/10

11:40 a.m.-10:04 p.m.

1 stop7h 24m

C$ 493

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 12/11

7:45 a.m.-3:35 p.m.

1 stop10h 50m

San Francisco

Wed 19/11

6:00 p.m.-7:13 a.m.

1 stop10h 13m

C$ 502

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 21/9

7:00 a.m.-12:23 p.m.

1 stop8h 23m

San Francisco

Fri 26/9

1:25 p.m.-12:21 a.m.

1 stop7h 56m

C$ 509

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 11/10

5:25 p.m.-11:59 p.m.

1 stop9h 34m

San Francisco

Sat 18/10

6:35 a.m.-9:35 p.m.

2 stops12h 00m

C$ 511

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$ 416, 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$ 434.

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$ 765.

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$ 682.

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$ 510 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$ 402 on momondo.

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

You could potentially save up to 39% 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 August 2025, prices for Ottawa to San Francisco flights are approximately 33% 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 11m.

  • 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
8,941 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 336Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Porter AirlinesPriceFrom C$ 339Free CancellationRating
8.0
351 reviews
Search Porter Airlines flights
WestJetPriceFrom C$ 340Free CancellationRating
7.2
3,065 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
Turlock
South San Francisco
Mountain View
Half Moon Bay
Sunnyvale
Cupertino
Mill Valley
Los Banos
Palo Alto
Pacifica
Berkeley
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.
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