YOW - SFO

$202 Find Cheap Flights from Ottawa to San Francisco - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to San Francisco departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$306
Typical prices: $361-$563
WestJet
Sat 8/22Sat 8/29
YOW - SFO • 1 stop
Cheapest one-way
$202
Typical prices: $184-$394
WestJet
Mon 9/21
YOW - SFO • 2 stops
Top airlines
Cheapest • from $312 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Ottawa and San Francisco. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $380 (round-trip)
Shortest trip • 8h 26m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 51% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights from Ottawa to San Francisco (YOW-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ottawa to San Francisco

Sat, Aug 22 - Sat, Aug 29
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
1:00 pm - 12:40 am
SFO
-
YOW
8h 40m
1 stop
$306WestJet
Sat, Aug 22 - Sat, Aug 29
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
1:00 pm - 12:40 am
SFO
-
YOW
8h 40m
1 stop
$309WestJet
Sun, Sep 6 - Sat, Sep 26
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$312WestJet
Mon, Aug 24 - Mon, Aug 31
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
6:00 am - 7:20 pm
SFO
-
YOW
10h 20m
1 stop
$323WestJet
Sun, Sep 6 - Sat, Sep 26
WestJet Logo
6:55 am - 4:40 pm
YOW
-
SFO
12h 45m
2 stops
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$325WestJet
Tue, Sep 1 - Tue, Sep 8
WestJet Logo
6:00 am - 12:00 pm
YOW
-
SFO
9h 00m
1 stop
WestJet Logo
6:00 am - 7:20 pm
SFO
-
YOW
10h 20m
1 stop
$344WestJet
Mon, Oct 19 - Sat, Oct 24
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
1:00 pm - 5:35 am
SFO
-
YOW
13h 35m
1 stop
$345WestJet
Tue, Sep 1 - Tue, Sep 8
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$347WestJet
Mon, Aug 24 - Mon, Aug 31
WestJet Logo
12:25 pm - 9:55 pm
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
6:00 am - 5:15 pm
SFO
-
YOW
8h 15m
1 stop
$354WestJet
Mon, Oct 19 - Sat, Oct 24
WestJet Logo
1:20 pm - 9:55 pm
YOW
-
SFO
11h 35m
1 stop
WestJet Logo
1:00 pm - 5:35 am
SFO
-
YOW
13h 35m
1 stop
$358WestJet
Booking Insights

KAYAK's insights & trends for Ottawa to San Francisco flights

Get data-powered insights and trends into flights from Ottawa to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ottawa to San Francisco?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ottawa to San Francisco departing in August.

Flight prices are below average for this route right now.

Flights to San Francisco from Ottawa usually cost between $370 and $576 in August.
The lowest price found in the past 5 days was $306 on WestJet (Aug 22-Aug 29).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ottawa to San Francisco is September, where tickets cost $354 (return) on average. On the other hand, the most expensive months are May and July, where the average cost of round-trip tickets is $558 and $548 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ottawa to San Francisco, you should book around 4 weeks before departure, which saves you about 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low season

January

Cheapest flight

$202
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Ottawa to San Francisco

When to book flights from Ottawa to San Francisco

Are your dates flexible? Find out the best times to travel from Ottawa to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ottawa to San Francisco

  • Are there accessibility services at San Francisco International Airport?

    Yes. SFO offers passengers with limited mobility access with ramps and elevators throughout its premises. Furthermore, at SFO travelers with limited mobility have access to accessible designated parking garages, washrooms, and wheelchair assistance. Passengers with hearing impairment travellng through SFO have visual paging and TTY telephones while passengers with visual impairments in SFO have Braille signage throughout the Airport and free Aira service.

  • What are the most popular layover cities for flights from Ottawa to San Francisco?

    The flight from Ottawa to San Francisco is of considerable length. Thus the route will include at least one layover stop. On the route, you’ll find single and double layover flight choices. Toronto, Las Vegas, Fort Lauderdale, Montreal, Chicago, Newark, Vancouver, Denver, Minneapolis, Detroit, Atlanta, Houston, Calgary, Atlanta, Los Angeles, Seattle and New York are the route’s most popular layover cities.

  • What are the visa and passport specifications to fly from Ottawa to San Francisco?

    When traveling to San Francisco from Ottawa, Canadian citizens must have an official passport. Also, Canadian citizens can make the trip to San Francisco with their Nexus Card. Their passport must also be valid during their stay in San Francisco. Additionally, Canadian citizens traveling to San Francisco for less than 90 days, won’t need to have a visa. Alternatively, they may need a relevant visa for a stay of more than 90 days.

  • Are there animal relief areas at Ottawa/Macdonald-Cartier International Airport?

    Yes. YOW offers service animals and pets designated relief areas throughout its faculties to take care of the fuzzy four-legged travelers’ potty needs. On that account, Ottawa Airport has a variety of service animal/pet relief areas past the security open throughout the day. At YOW, past security on the Canada/International Departure level next to Gate 18 and the United States Departure level is the service animal/pet relief areas. Additionally, YOW has an outdoor animal relief area located across from the terminal building along the Parkade (P1), supplied with waste disposal bags and receptacles.

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

    In the last 5 days, the lowest price for a flight from Ottawa to San Francisco was $202 for a one-way ticket and $312 for a round-trip.

  • Do I need a passport to fly between Ottawa and San Francisco?

    A passport is required to fly from Ottawa to San Francisco.

  • Which airports will I be using when flying from Ottawa to San Francisco?

    Ottawa and San Francisco are both served by 1 main airport. You will leave Ottawa from Ottawa and will be arriving at San Francisco.

  • Which aircraft models fly most regularly from Ottawa to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ottawa to San Francisco?

    Star Alliance is the only airline alliance operating flights between Ottawa and San Francisco.

  • Which is the best airline for flights from Ottawa to San Francisco, Porter Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ottawa to San Francisco are Porter Airlines and United Airlines. With an average price for the route of $459 and an overall rating of 8.0, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $448 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Ottawa to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ottawa to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ottawa to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Ottawa is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ottawa to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Ottawa with another airline. Booking your flights between Ottawa and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ottawa to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ottawa to San Francisco

  • San Francisco International Airport (SFO) is one of the main airports serving the San Francisco area. The Airport serves as a hub for Alaska Airlines and United Airlines, which offer flights from Ottawa to San Francisco.
  • Do you want to lease a vehicle when you land in San Francisco? SFO has a rental car center. To access the rental car center take the AirTrain from SFO’s Terminals. Budget, Alamo, Avis, Thrifty, National, Dollar, Enterprise, SIXT, and Hertz, are the onsite rental agencies at SFO.
  • For business people traveling through SFO, who have important business to take care of while at the Airport, SFO has a business center. SFO’s business center is located in the International Terminal's main hall.
  • The flight from San Francisco to Ottawa is quite lengthy. Passengers flying with Delta Air Lines and Air Canada can sidetrack themselves en route with a variety of entertainment offered via the airline's entertainment device.
  • Ottawa/Macdonald-Cartier International Airport (YOW) is one of the primary airports serving the metropolis of Ottawa. The Airport serves as a base for Flair Airlines, Air Canada, and Porter Airlines, which offer flights to San Francisco from Ottawa.

Reviews of the top 4 airlines serving from Ottawa to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ottawa to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Porter AirlinesOverall score based on 448 reviews
8.0Comfort
6.9Entertainment
8.6Crew
8.2Boarding
7.5Food
Airline reviews

Look, I understand that Kayak doesn't know I cancelled my flight on Porter. So I didn't actually fly yesterday. My main disappointment is with Porter ticket fare policies, and maybe you can pass this on to them: At my employer's request, I had booked a full fare ticket with no change fees since my trip to Toronto would likely be extended. Indeed, when I went to change my flight home to a later date, I was told the Fare Difference would cost an additional $550. So much for no change fees lol! While I had the agent on the line, I hopped over to Kayak, searched for new flights on the date in question, and saw a one-way ticket that got me home for only $355. So I got reimbursed about $450for the unused half of my roundtrip and bought a new ticket for $355. What good is a full fare / no change fee ticket if they screw you with "fare difference" BS. I'm still flying home on Porter Airlines but they just lost a hundred bucks with their stupid shenanigans.

4.0 OkayJeff, Jul 2026
YYZ - SFO
Read more Porter Airlines reviews

Look, I understand that Kayak doesn't know I cancelled my flight on Porter. So I didn't actually fly yesterday. My main disappointment is with Porter ticket fare policies, and maybe you can pass this on to them: At my employer's request, I had booked a full fare ticket with no change fees since my trip to Toronto would likely be extended. Indeed, when I went to change my flight home to a later date, I was told the Fare Difference would cost an additional $550. So much for no change fees lol! While I had the agent on the line, I hopped over to Kayak, searched for new flights on the date in question, and saw a one-way ticket that got me home for only $355. So I got reimbursed about $450for the unused half of my roundtrip and bought a new ticket for $355. What good is a full fare / no change fee ticket if they screw you with "fare difference" BS. I'm still flying home on Porter Airlines but they just lost a hundred bucks with their stupid shenanigans.

I flew with Porter yesterday and overall had a positive experience. The flight was delayed, but the airline did a good job keeping passengers informed with frequent updates throughout the process. My biggest challenge was actually in Terminal 3, where the speaker system wasn’t very clear. It was often difficult to hear the announcements, which made it harder to follow updates at the gate. On board, the experience improved significantly. The aircraft felt very new and well maintained, and the seats were surprisingly comfortable for a short-haul flight. One of the flight attendants seemed a little disengaged, but the other was excellent—friendly, professional, and a pleasure to interact with. Despite the delay, the comfortable aircraft, clear communication from Porter, and positive onboard service made for a good overall experience.

It was okay. Had a thing with the front desk, she had me repack my suitcases to have them be under the weight restrictions, but then the other one was overweight, she argued with me about it when there were tons of people in line. Wasn’t great.

The check-in staff, boarding staff, and flight crew were all very friendly. Really miss the Porter lounge in Ottawa.

Lavatories broke with an hour to go. At least we were on time.

Due to mechanical problems it was delayed causing problems the actual flight. Was fune

First time with Porter. Amazing experience overall, will be my airline of choice in North America whenever possible. Liked the quality of food and how it was served but one suggestion- a hot meal on the longer flights, perhaps?

Delayed by 2.5 hours. This happened previously on my flight from YOW to YVR on Dec. 26.2023. This is a terrible airline. The reason was there was lack of ground crew. This is a known event. AVOID PORTER AIRLINES IF YOU CAN. There is a reason half the plane was empty.

Flight Ottawa to Toronto canceled and no crew was available to direct me on what to do. I opened a file and I wait to be compensated.

Porter, like most airlines, need to improve their baggage policies. In reality, there are no longer 'cheap flights' because passengers pay exorbitant baggage fees.

We boarded the plane and were about to take off when we were notified that the tires had to be checked. Upon inspection, they were found to need replacement, so the entire plane had to be deboarded. After we exited the plane, United staff forced us to stay in the gate area by posting "Do Not Exit" signs on the doors connecting the gate area to the terminal. Many of us had already rebooked our flights and had no checked bags, but they told us we could not leave. This seemed inappropriate to hold people under false pretenses. When the agent told us we could leave, I asked them to please take down the "Do Not Exit" signs, as they were misleading. The agent refused, and I told them that it didn't feel right to hold people like that.

Flight attendants had a little attitude. Food tastes no good.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

headphone jack didnt work for the first flight and not much variety

Marked by flight delays on all segments of the trip. Food in first class cabin was mediocre and overhead cabin storage was not adequate. Overall, the premium charge for first class cabin was poor and over hyped. This will be our last flight with UA.

The seat is too hard and my back and bottom are having servers pain

The food was terrible and they lost my luggage which created a lot of issues.

I loved the fact it was on time and it was a smooth flight to my destination.

I didn't think about not having the right app for wifi because my connecting flight was with Westjet and when I took off from Seattle I was thinking I would use my wifi, but realized I couldn't on my Westjet app and I did not have Delta's app downloaded.

The staff at the airport and on the plane were wonderful I especially wanna acknowledge the staff who boarded us at the Calgary airport. The women who helped us board at the airport were incredible… they were so kind and sweet…I very happy with WestJet and I am hoping I can fly more often to Canada.

Good value, minor delay due to waiting for inbound plane but they gave accurate information about wait time. Able to switch to a seat by my husband thanks to a kind flight attendant

Absolutely terrible, from the customer service to boarding the plane. On the phone, there was some mishaps with getting in my correct date and they did not help me retrieve a refund or any assistance. I’m gonna be reporting to all my followers and family around the region of Los Angeles to New York.

Nothing to like because my inbound flight was cancelled without notification by West Jet or third party, JustFly. I couldn’t take the inbound flight due to cancellation; therefore could not take the outbound flight back.

Seat barely reclined. Boarding took forever. Flight attendants were not very friendly

I always worry about flying budget airlines but I was impressed by Westjet. The checkin agent was terrific. Seated my husband & me together w/o us asking. TSA checkin was smooth & easy. Plane was clean & comfortable. Drink & snack was unexpected. I will fly with them again.

Not a tonne of food for purchase items for early morning.

Long delay die to pet mix up. Also bags took forever to get to carousel

Horrible! Rude flight attendant, barely any service on such a long flight. I wouldn't recommend Air Canada to anyone.

Aircraft is designed with all 3 washrooms at the back of the plane, meaning that when there is service underway, there are no washrooms available and it gets very crowded at the back of the plane.

The stag were helpful, kind and liked the passengers. The plane was pristinely clean! Great flight!

The staff was great and made the long trip easy peasy!

The free Wi-fi for Aeroplan members was a great touch. The time passed quickly. I found the seats seemed a little closer together than I remember. Not Air Canada's fault, but we were about 20 minutes late landing because the airport was too busy. We had to circle around for a while. The boarding and disembarking went very smoothly.

I liked the behaviour of the crew members.The flight was good.

Multiple change of the gates at Pearson, delayed flight was extremely uncomfortable.

Never made this leg of the flight since we rebooked through United instead. Did not make it to immigration/US custom due to the delay. Had to spend the night on our own dime in Toronto

Experienced flight cancelations and delays in 5 days. They seem pretty common to AC. Experienced with one of AC's check-in agents at the counter of a big liar. She lied and acted (yes like acting in a movie) that an early flight was fully booked and refused to rebook me, but my flight was delayed two hours so I could not make my connection. Later, I got help at the gate to switch the early flight (Big thanks to that agent). Ater boading, I found the early flight was only 2/3 full meaning there was almost one vacant seat in a 3-person seater, and multiple empty 3-seaters. AC is wired that it is filled with good and bad employees. BTW, AC employees seem never smile, or they don't know how.

Seating for almost 3 hours in the plan before aircraft takeoff. Very exhausted .

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

Information on your arrival and departure airports