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Ottawa

$139+ Cheap flights from San Francisco (SFO) to Ottawa (YOW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YOW
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from San Francisco to Ottawa

Cheapest flights from San Francisco to Ottawa
Explore the most affordable flight options available from San Francisco to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2312:50 pm
SFO
-
YOW
2 stops13h 38m
WestJet
Tue 5/266:15 am
YOW
-
SFO
2 stops13h 59m
WestJet
Deal found 1/24$317
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2312:50 pm
SFO
-
YOW
2 stops13h 38m
WestJet
Tue 6/26:00 am
YOW
-
SFO
1 stop8h 54m
WestJet
Deal found 1/24$343
This FlightHub deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:00 am
SFO
-
YOW
1 stop8h 20m
Multiple Airlines
Thu 6/47:00 am
YOW
-
SFO
1 stop8h 20m
Multiple Airlines
Deal found 1/25$363
This FlightHub deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2312:50 pm
SFO
-
YOW
1 stop8h 50m
Multiple Airlines
Tue 5/267:00 am
YOW
-
SFO
1 stop8h 20m
Multiple Airlines
Deal found 1/24$367
This oojo deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:00 am
SFO
-
YOW
1 stop8h 20m
WestJet
Thu 6/412:25 pm
YOW
-
SFO
2 stops12h 30m
WestJet
Deal found 1/25$368
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/171:00 pm
SFO
-
YOW
2 stops32h 39m
WestJet
Sun 4/196:00 am
YOW
-
SFO
1 stop9h 10m
WestJet
Deal found 1/24$372
This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:45 pm
SFO
-
YOW
1 stop16h 59m
Multiple Airlines
Sun 4/196:00 am
YOW
-
SFO
1 stop9h 10m
Multiple Airlines
Deal found 1/24$383
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/151:00 pm
SFO
-
YOW
2 stops26h 23m
WestJet
Wed 3/185:40 am
YOW
-
SFO
2 stops33h 30m
WestJet
Deal found 1/24$417
This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/232:25 pm
SFO
-
YOW
2 stops31h 14m
Multiple Airlines
Mon 3/25:40 am
YOW
-
SFO
1 stop10h 02m
Multiple Airlines
Deal found 1/24$422

Find flight deals from San Francisco to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(oojo)

One-way from

$139
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$451
Provider with most accurate pricing for San Francisco-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Ottawa flights.
Search Deals
From San Francisco to Ottawa
Search Deals
One-way flight from San Francisco to Ottawa
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Ottawa 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, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from San Francisco to Ottawa that are best for you.

Fly from

San Francisco

Fly to

Ottawa

Route

Depart

Return

Price

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 4/17

6:45 pm-2:44 pm

1 stop16h 59m

Ottawa

Sun 4/19

6:00 am-12:10 pm

1 stop9h 10m

$383

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Sat 3/7

10:15 am-1:01 pm

2 stops47h 46m

Ottawa

Fri 3/27

5:40 am-12:42 pm

1 stop10h 02m

$449

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Sun 3/15

10:15 am-6:23 pm

2 stops29h 08m

Ottawa

Tue 3/17

6:45 am-12:42 pm

1 stop8h 57m

$450

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Mon 2/23

1:45 pm-12:39 am

1 stop7h 54m

Ottawa

Wed 3/4

9:30 am-12:28 am

2 stops17h 58m

$476

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Wed 2/25

10:58 pm-5:25 pm

2 stops15h 27m

Ottawa

Wed 3/4

6:45 pm-9:30 am

1 stop17h 45m

$478

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Mon 2/23

1:45 pm-12:39 am

1 stop7h 54m

Ottawa

Tue 3/3

7:00 am-9:39 pm

2 stops17h 39m

$483

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Mon 3/9

1:45 pm-12:38 am

1 stop7h 53m

Ottawa

Tue 3/17

6:45 am-12:42 pm

1 stop8h 57m

$487

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Wed 3/11

7:32 pm-12:39 am

2 stops26h 07m

Ottawa

Wed 3/18

5:40 am-12:42 pm

1 stop10h 02m

$541

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 3/27

1:45 pm-12:39 am

1 stop7h 54m

Ottawa

Sat 4/4

5:40 am-12:45 pm

1 stop10h 05m

$547

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 2/27

1:45 pm-12:43 am

1 stop7h 58m

Ottawa

Sun 3/8

6:45 am-12:42 pm

1 stop8h 57m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 19 results
1
2

Compare providers for flights from San Francisco to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Ottawa in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Ottawa. Price data was last updated on January 23, 2026.

The price you pay for your flight from San Francisco to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from San Francisco to Ottawa (average of $142). Flying from San Francisco to Ottawa in November is currently the most expensive (average of $327). 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.

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated January 26, 2026.
Get a feel of what it's like to fly with Porter Airlines, United Airlines, and WestJet from San Francisco to Ottawa 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
7.9
Good
412 reviews

Crew

8.6

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

6.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

6.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,199 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

6.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
WestJet
7.2
Good
3,249 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

6.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,656 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

6.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Flying on Porter Airlines is currently your cheapest option to Ottawa, with prices starting at $203. Additional round-trip tickets that might be worth considering are offered by WestJet and United Airlines, with the lowest prices starting at $268 and $281, respectively. Users have found that Porter Airlines is 56% cheaper than the other options available to this destination.

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

    The cheapest airlines for a one-way flight from San Francisco to Ottawa are WestJet ($108), Porter Airlines ($114), and United Airlines ($114).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Ottawa 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 San Francisco to Ottawa?

    Currently, September is the cheapest month in which you can book a flight from San Francisco to Ottawa (average of $142). Flying from San Francisco to Ottawa in November is currently the most expensive (average of $327). 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

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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Alternative routes for San Francisco to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from San Francisco to Ottawa

Discover the top 4 airlines that operate flights from San Francisco to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$203Average$421FlexibilityNo cancel feeOn-time52%
WestJetCheapest$268Average$395FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$281Average$571FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$294Average$488FlexibilityNo cancel feeOn-time67%

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