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Cheap flights from Ottawa to San Francisco from C$ 271

YOW — SFO
29 Nov — 6 Dec1
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 3/127:00 a.m. -
1 stop8h 47m
Tue 8/121:45 p.m. -
1 stop7h 56m
Deal found 27/10C$ 522
Sat 21/117:00 a.m. -
1 stop8h 44m
Wed 2/121:45 p.m. -
1 stop7h 56m
Deal found 25/10C$ 527
Thu 26/117:00 a.m. -
1 stop8h 44m
Tue 8/121:45 p.m. -
1 stop7h 56m
Deal found 27/10C$ 537
Thu 3/127:00 a.m. -
1 stop8h 47m
Sun 6/121:45 p.m. -
1 stop7h 56m
Deal found 29/10C$ 552
Wed 9/127:00 a.m. -
1 stop8h 47m
Fri 11/121:45 p.m. -
1 stop7h 56m
Deal found 25/10C$ 569
Mon 23/117:00 a.m. -
1 stop8h 44m
Thu 26/111:45 p.m. -
1 stop7h 52m
Deal found 26/10C$ 597
Wed 9/127:00 a.m. -
1 stop8h 47m
Wed 16/1210:29 a.m. -
2 stops11h 12m
Deal found 25/10C$ 608
Tue 24/117:00 a.m. -
1 stop8h 44m
Sun 6/121:45 p.m. -
1 stop7h 56m
Deal found 27/10C$ 613
Sat 28/117:00 a.m. -
1 stop8h 44m
Tue 8/121:45 p.m. -
1 stop7h 56m
Deal found 27/10C$ 618
Mon 23/117:00 a.m. -
1 stop8h 44m
Tue 8/121:45 p.m. -
1 stop7h 56m
Deal found 27/10C$ 620
Tue 24/115:30 a.m. -
1 stop10h 14m
Wed 9/126:30 p.m. -
2 stops24h 36m
Deal found 27/10C$ 621

Find flight deals from Ottawa to San Francisco

Round-trip from

C$ 522

One-way from

C$ 271

Popular in

July

Cheapest in

April

Average price

C$ 691
Porter Airlines
  • Porter Airlines
  • 3/12-8/12
  • 2 total stops
  • 16h 43m total
  • Ottawa to San Francisco
Search Deals
5/12-31/12
  • 5/12-31/12
  • 2 total stops
  • 12h 22m total
  • Ottawa to San Francisco
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 24/1

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

2 stops13h 20m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 288
Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 12/11

7:00 a.m.-12:44 p.m.

1 stop8h 44m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 379

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sun 15/11

7:00 a.m.-12:44 p.m.

1 stop8h 44m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 462

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 12/11

9:45 a.m.-11:09 p.m.

2 stops16h 24m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 494

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 18/12

5:30 a.m.-6:14 p.m.

2 stops15h 44m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 509

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 25/12

4:42 p.m.-12:59 a.m.

1 stop11h 17m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 531

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 5/11

7:05 a.m.-8:40 p.m.

2 stops16h 35m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 536

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Tue 29/12

7:00 a.m.-12:47 p.m.

1 stop8h 47m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 550

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 6/11

6:15 a.m.-5:24 p.m.

2 stops14h 09m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 569

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 5/11

6:15 a.m.-5:25 p.m.

1 stop14h 10m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 569

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 22 resultsSorted by cheapest first
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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$ 562). Flying from Ottawa to San Francisco in July is currently the most expensive (average of C$ 822). 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$ 573 and C$ 820 in December.
The cheapest round-trip price found within the last 5 days was C$ 522 on Porter Airlines (3 Dec-8 Dec).

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
467 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

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
467 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

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
8,692 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

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
7.3
Good
10,451 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

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
3,442 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

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
11,833 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

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$ 613, Air Transat can have you in San Francisco from Ottawa in 8h 44m. 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$ 375, was found to be the cheapest airline from Ottawa to San Francisco.Alternate airlines to your destination round-trip include Porter Airlines and Air Canada. WestJet is priced at 43% 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 WestJet and United Airlines, with prices starting from C$ 278 and C$ 341, 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$ 562). Flying from Ottawa to San Francisco in July is currently the most expensive (average of C$ 822). 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
San Bruno
Burlingame
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

WestJet flights from Ottawa to San Francisco
Air Canada 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$ 375AverageC$ 541FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 398AverageC$ 621FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 424AverageC$ 1,017FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 623AverageC$ 948FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 768AverageC$ 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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