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Ottawa

$125+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YOW
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$274
(oojo)

One-way from

$125
(Trip.com)

Popular in

July

Cheapest in

February

Average price

$444
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. 14% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This oojo deal was found by Cheapflights users on 9/9. 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 11/21:00 pmSFO - YOW
2 stops26h 21mWestJet
Tue 11/46:00 amYOW - SFO
1 stop9h 12mWestJet
Deal found 9/9$274
This oojo deal was found by Cheapflights users on 9/10. 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.
Mon 10/207:30 amSFO - YOW
2 stops29h 49mWestJet
Wed 10/225:15 pmYOW - SFO
2 stops31h 09mWestJet
Deal found 9/10$309
This Trip.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/177:30 amSFO - YOW
2 stops13h 52mWestJet
Tue 10/216:00 amYOW - SFO
1 stop8h 54mWestJet
Deal found 9/11$312
This Trip.com deal was found by Cheapflights users on 9/10. 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.
Fri 10/177:30 amSFO - YOW
2 stops13h 52mWestJet
Fri 10/2412:20 pmYOW - SFO
2 stops12h 04mWestJet
Deal found 9/10$316
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sat 11/110:15 amSFO - YOW
2 stops25h 46mMultiple Airlines
Tue 11/46:00 amYOW - SFO
1 stop9h 12mMultiple Airlines
Deal found 9/9$320
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 11/610:15 amSFO - YOW
1 stop25h 29mMultiple Airlines
Thu 11/136:00 amYOW - SFO
1 stop9h 12mMultiple Airlines
Deal found 9/11$331

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 September 11, 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

Mon 10/20

7:30 am-4:19 pm

2 stops29h 49m

Ottawa

Wed 10/22

5:15 pm-9:24 pm

2 stops31h 09m

$309

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 10/17

7:30 am-12:22 am

2 stops13h 52m

Ottawa

Tue 10/21

5:15 pm-11:54 am

2 stops21h 39m

$317

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Sat 11/1

10:15 am-3:01 pm

2 stops25h 46m

Ottawa

Tue 11/4

6:00 am-12:12 pm

1 stop9h 12m

$320

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Thu 11/6

10:15 am-2:44 pm

1 stop25h 29m

Ottawa

Thu 11/13

6:00 am-12:12 pm

1 stop9h 12m

$331

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Thu 11/6

1:00 pm-6:21 pm

2 stops26h 21m

Ottawa

Thu 11/13

6:00 am-12:12 pm

1 stop9h 12m

$342

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 10/17

7:30 am-12:22 am

2 stops13h 52m

Ottawa

Sun 10/19

5:55 am-9:24 pm

2 stops18h 29m

$345

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 10/10

2:45 pm-12:40 am

2 stops30h 55m

Ottawa

Fri 10/17

5:15 pm-11:54 am

2 stops21h 39m

$357

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Tue 9/30

7:30 am-4:19 pm

2 stops29h 49m

Ottawa

Sat 10/4

5:55 am-11:54 am

2 stops32h 59m

$366

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Mon 9/22

2:45 pm-6:20 pm

2 stops24h 35m

Ottawa

Tue 10/7

3:35 pm-9:24 pm

1 stop8h 49m

$371

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Thu 11/13

1:00 pm-12:40 am

1 stop8h 40m

Ottawa

Mon 11/17

6:45 am-12:40 pm

1 stop8h 55m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
2

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 August 29, 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 $419). 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 September 11, 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 September 11, 2025.
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
363 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.0

Overall

7.9

Food

7.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.0

Overall

7.9

Food

7.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,937 reviews
Porter Airlines
7.9
Good
363 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.0

Overall

7.9

Food

7.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,091 reviews
Porter Airlines
7.9
Good
363 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.0

Overall

7.9

Food

7.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.0

Overall

7.9

Food

7.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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.

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

    There are many flights that can get you from San Francisco to Ottawa in 29h 49m. Fly via WestJet to get the fastest option. There are 2439 mi between San Francisco and Ottawa.

  • 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 $255. Additional round-trip tickets that might be worth considering are offered by WestJet and United Airlines, with the lowest prices starting at $269 and $281, respectively. Users have found that Porter Airlines is 43% cheaper than the other options available to this destination.

  • 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 $419). 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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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$255Average$367FlexibilityNo cancel feeOn-time52%
WestJetCheapest$269Average$410FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$281Average$516FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$308Average$515FlexibilityNo cancel feeOn-time67%

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