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Cheap flights from Ottawa to San Francisco from C$ 252

YOW — SFO
20 Oct — 27 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to San Francisco

Thu 15/1012:25 p.m. -
2 stops12h 30m
Thu 22/106:00 a.m. -
1 stop10h 20m
Deal found 15/9C$ 348
Thu 15/1012:25 p.m. -
2 stops12h 30m
Wed 21/106:05 p.m. -
1 stop8h 30m
Deal found 15/9C$ 361
Wed 7/107:20 a.m. -
1 stop17h 35m
Tue 13/106:00 a.m. -
1 stop8h 15m
Deal found 15/9C$ 401
Wed 7/107:20 a.m. -
1 stop17h 35m
Wed 21/106:05 p.m. -
1 stop8h 30m
Deal found 15/9C$ 404
Thu 22/1012:25 p.m. -
2 stops12h 30m
Sat 24/101:00 p.m. -
1 stop13h 35m
Deal found 16/9C$ 435
Tue 22/98:15 p.m. -
1 stop23h 25m
Wed 30/96:00 a.m. -
1 stop10h 20m
Deal found 15/9C$ 439
Mon 19/101:20 p.m. -
1 stop11h 35m
Sat 24/101:00 p.m. -
1 stop13h 35m
Deal found 15/9C$ 440

Find flight deals from Ottawa to San Francisco

Round-trip from

C$ 348

One-way from

C$ 252

Popular in

July

Cheapest in

April

Average price

C$ 603
WestJet
  • WestJet
  • 15/10-22/10
  • 3 total stops
  • 22h 50m total
  • Ottawa to San Francisco
Search Deals
6/10-31/12
  • 6/10-31/12
  • 2 total stops
  • 35h 13m total
  • Ottawa to San Francisco
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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

Sun 18/10

12:25 p.m.-9:55 p.m.

2 stops12h 30m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 278

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Mon 2/11

6:10 a.m.-3:50 p.m.

1 stop12h 40m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 348

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 15/10

12:25 p.m.-9:55 p.m.

2 stops12h 30m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 348

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sun 1/11

5:30 a.m.-6:17 p.m.

2 stops15h 47m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 354

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sat 7/11

5:30 a.m.-3:50 p.m.

2 stops37h 20m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 358

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 6/10

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

1 stop8h 20m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 421

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 15/10

6:25 p.m.-12:20 p.m.

1 stop20h 55m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 429

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 8/10

6:50 a.m.-9:55 p.m.

2 stops18h 05m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 471

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 30/9

6:00 a.m.-8:50 p.m.

1 stop17h 50m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 477
Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Mon 5/10

6:25 a.m.-11:25 a.m.

1 stop8h 00m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 477

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/9

Showing 1-10 of 23 resultsSorted by cheapest first
1
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3

Best time to book a flight from Ottawa to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Ottawa with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ottawa to San Francisco

How far ahead should I book a flight from Ottawa to San Francisco?

Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ottawa to San Francisco?

Currently, April is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 563). Flying from Ottawa to San Francisco in July is currently the most expensive (average of C$ 811). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Ottawa to San Francisco?

Airfare is below average for this route at the moment.

Ottawa to San Francisco flights typically cost between C$ 524 and C$ 788 in October.
The cheapest round-trip price found within the last 5 days was C$ 348 on WestJet (15 Oct-22 Oct).

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines from Ottawa to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
462 reviews
Check prices

Overall

8.0

Entertainment

6.9

Crew

8.6

Food

7.6

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Porter Airlines
8.0
Very good
462 reviews
Porter Airlines
8.0
Very good
462 reviews
Check prices

Overall

8.0

Entertainment

6.9

Crew

8.6

Food

7.6

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Delta
7.8
Good
8,591 reviews
Porter Airlines
8.0
Very good
462 reviews
Check prices

Overall

8.0

Entertainment

6.9

Crew

8.6

Food

7.6

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
United Airlines
7.4
Good
10,231 reviews
Porter Airlines
8.0
Very good
462 reviews
Check prices

Overall

8.0

Entertainment

6.9

Crew

8.6

Food

7.6

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
WestJet
7.2
Good
3,447 reviews
Porter Airlines
8.0
Very good
462 reviews
Check prices

Overall

8.0

Entertainment

6.9

Crew

8.6

Food

7.6

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Air Canada
7.1
Good
11,652 reviews
Porter Airlines
8.0
Very good
462 reviews
Check prices

Overall

8.0

Entertainment

6.9

Crew

8.6

Food

7.6

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Related info for your journey

  • How long is the flight from Ottawa to San Francisco?

    For as low as C$ 590, WestJet can have you in San Francisco from Ottawa in 8h 20m. The distance from Ottawa to San Francisco is about 3925 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ottawa to San Francisco round-trip?

    WestJet, at C$ 332, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Air Canada and Porter Airlines. WestJet is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Ottawa to San Francisco one-way?

    C$ 260 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on Air Canada and WestJet, with prices starting from C$ 270 and C$ 278, respectively.

  • Can I find deals for flights from Ottawa to San Francisco that include hotel bookings?

    Yes. In addition to deals on Ottawa to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to San Francisco.

  • Can I find deals for business class flights from Ottawa to San Francisco?

    Yes. Cheapflights offers flight deals from Ottawa to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ottawa to San Francisco?

    Currently, April is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of C$ 563). Flying from Ottawa to San Francisco in July is currently the most expensive (average of C$ 811). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Clara
Burlingame
San Bruno
Roseville
Livermore
South San Francisco
Novato
Manteca
Vallejo

Browse thousands of different options on Cheapflights for your next trip

Fly from Ottawa to San Francisco on these airlines

Air Canada flights from Ottawa to San Francisco
WestJet flights from Ottawa to San Francisco
United Airlines flights from Ottawa to San Francisco

Top 5 airlines flying from Ottawa to San Francisco

AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 332AverageC$ 531FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 395AverageC$ 859FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 397AverageC$ 625FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 506AverageC$ 661FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 767AverageC$ 917FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ottawa to San Francisco?

When you search for this flight from Ottawa to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to San Francisco with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to San Francisco flexibly with Cheapflights today.

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