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$135+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YOW
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Ottawa are usually found in February or June, booked 55 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap 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 julio 29, 2025.

Round-trip from

$283
(Trip.com)

One-way from

$135
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$609
From San Francisco to Ottawa
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One-way flight from San Francisco to Ottawa
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Highest demand for flights based on searches. 13% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julio 29, 2025.

This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/910:15 amSFO - YOW
2 stops17h 30mMultiple Airlines
mar. 9/1612:20 pmYOW - SFO
2 stops12h 04mMultiple Airlines
Deal found 7/27$283
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
mar. 8/1912:50 pmSFO - YOW
1 stop8h 51mWestJet
vie. 8/2212:20 pmYOW - SFO
2 stops12h 05mWestJet
Deal found 7/28$310
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/199:10 pmSFO - YOW
1 stop9h 48mUnited Airlines
vie. 8/227:29 pmYOW - SFO
1 stop16h 54mUnited Airlines
Deal found 7/26$376

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 julio 29, 2025.
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

mar. 9/9

10:15 am-6:45 am

2 stops17h 30m

Ottawa

mar. 9/16

12:20 pm-9:24 pm

2 stops12h 04m

$283

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

mar. 8/19

12:50 pm-12:41 am

1 stop8h 51m

Ottawa

vie. 8/22

12:20 pm-9:25 pm

2 stops12h 05m

$310

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

mar. 8/19

9:10 pm-9:58 am

1 stop9h 48m

Ottawa

vie. 8/22

7:29 pm-9:23 am

1 stop16h 54m

$376

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

mar. 9/9

10:15 am-12:40 am

2 stops11h 25m

$135

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

mar. 8/19

7:30 am-12:22 am

2 stops13h 52m

$152

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

mar. 8/19

7:40 pm-8:19 am

1 stop9h 39m

$156

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

mar. 8/26

9:10 pm-9:58 am

1 stop9h 48m

$161

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 25, 2025.

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 55 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, January is the cheapest month in which you can book a flight from San Francisco to Ottawa (average of $294). Flying from San Francisco to Ottawa in September is currently the most expensive (average of $428). 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.

What is the cheapest time of day to fly from SFO to YOW?

Find hourly flight availability from San Francisco to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 29, 2025.

One of the essential ways to save on airfare from San Francisco to Ottawa is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.

What is the cheapest day to fly from San Francisco to Ottawa?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Ottawa. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Ottawa flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 julio 29, 2025.
Get a feel of what it's like to fly with United Airlines, WestJet, and Air Canada 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.
United Airlines
7.4
Good
8,896 reviews

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,972 reviews
United Airlines
7.4
Good
8,896 reviews

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,826 reviews
United Airlines
7.4
Good
8,896 reviews

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 WestJet is currently your cheapest option to Ottawa, with prices starting at $310. Another option worth looking into is United Airlines, starting at $376 round trip. Users have found that WestJet is 30% 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 ($152), Air Canada ($156), and United Airlines ($161).

  • 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, January is the cheapest month in which you can book a flight from San Francisco to Ottawa (average of $294). Flying from San Francisco to Ottawa in September is currently the most expensive (average of $428). 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 julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$254Average$352FlexibilityNo cancel feeOn-time60%
Porter AirlinesCheapest$265Average$397FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$281Average$564FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$308Average$543FlexibilityNo cancel feeOn-time67%

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