$212+ Cheap flights from Ottawa (YOW) to San Francisco (SFO)
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
Aug 31 — Sep 71
Round-trip
1 adult, Economy
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Find cheap flights from Ottawa to San Francisco with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Last-minute
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Cheapest flights from Ottawa to San FranciscoExplore the most affordable flight options available from Ottawa to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
Explore the most affordable flight options available from Ottawa to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:55 am
YOW
- SFO
2 stops12h 45m
WestJet
Mon 10/126:00 am
SFO
- YOW
2 stops15h 20m
WestJet
Deal found 7/27![WestJet logo]()
$361
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Mon 9/148:15 pm
YOW
- SFO
1 stop18h 45m
WestJet
Mon 9/216:00 am
SFO
- YOW
1 stop10h 20m
WestJet
Deal found 7/31![WestJet logo]()
$366
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Thu 10/112:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Sat 10/101:00 pm
SFO
- YOW
1 stop13h 35m
WestJet
Deal found 7/31![WestJet logo]()
$367
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Wed 9/212:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Thu 9/106:00 am
SFO
- YOW
1 stop8h 15m
WestJet
Deal found 7/31![WestJet logo]()
$368
This oojo deal was found by Cheapflights users on 7/31. 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 9/48:15 pm
YOW
- SFO
1 stop23h 25m
WestJet
Sat 9/196:00 am
SFO
- YOW
1 stop20h 35m
WestJet
Deal found 7/31![WestJet logo]()
$369
This oojo deal was found by Cheapflights users on 7/31. 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 10/512:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Sun 10/111:00 pm
SFO
- YOW
1 stop13h 35m
WestJet
Deal found 7/31![WestJet logo]()
$371
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:25 pm
YOW
- SFO
2 stops20h 35m
WestJet
Mon 10/196:00 am
SFO
- YOW
1 stop10h 20m
WestJet
Deal found 7/27![WestJet logo]()
$375
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Wed 9/96:00 am
SFO
- YOW
2 stops15h 20m
WestJet
Deal found 7/27![WestJet logo]()
$378
This oojo deal was found by Cheapflights users on 7/31. 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.
Wed 10/76:55 am
YOW
- SFO
2 stops12h 45m
WestJet
Tue 10/136:00 am
SFO
- YOW
1 stop20h 35m
WestJet
Deal found 7/31![WestJet logo]()
$379
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Sat 9/196:00 am
SFO
- YOW
1 stop8h 15m
WestJet
Deal found 7/28![WestJet logo]()
$381
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Fri 9/186:00 am
SFO
- YOW
1 stop10h 20m
WestJet
Deal found 7/28![WestJet logo]()
$382
Best flights from Ottawa to San FranciscoDiscover carefully curated flight deals from Ottawa to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
Discover carefully curated flight deals from Ottawa to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Sat 10/241:00 pm
SFO
- YOW
2 stops32h 42m
WestJet
Deal found 7/27![WestJet logo]()
$371
This Porter Airlines deal was found by Cheapflights users on 7/29. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:00 am
YOW
- SFO
1 stop8h 20m
Porter Airlines
Mon 10/51:20 pm
SFO
- YOW
1 stop8h 05m
Porter Airlines
Deal found 7/29![Porter Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Wed 9/306:55 am
YOW
- SFO
1 stop8h 25m
Multiple Airlines
Wed 9/306:05 pm
SFO
- YOW
1 stop8h 30m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$494
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.
Fri 9/41:20 pm
YOW
- SFO
1 stop11h 35m
WestJet
Mon 9/76:05 pm
SFO
- YOW
1 stop18h 15m
WestJet
Deal found 7/28![WestJet logo]()
$471
This Porter Airlines deal was found by Cheapflights users on 8/1. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am
YOW
- SFO
1 stop8h 45m
Porter Airlines
Tue 12/11:45 pm
SFO
- YOW
1 stop7h 58m
Porter Airlines
Deal found 8/1![Porter Airlines logo]()
$481
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:40 am
YOW
- SFO
2 stops16h 15m
Multiple Airlines
Mon 10/56:45 pm
SFO
- YOW
3 stops21h 35m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$517
This Porter Airlines deal was found by Cheapflights users on 8/1. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:00 am
YOW
- SFO
1 stop8h 45m
Porter Airlines
Tue 12/11:45 pm
SFO
- YOW
1 stop7h 58m
Porter Airlines
Deal found 8/1![Porter Airlines logo]()
$481
This KAYAK deal was found by Cheapflights users on 7/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/121:20 pm
YOW
- SFO
1 stop25h 40m
WestJet
Thu 10/156:00 am
SFO
- YOW
2 stops26h 35m
WestJet
Deal found 7/29![WestJet logo]()
$510
This Porter Airlines deal was found by Cheapflights users on 8/1. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:00 am
YOW
- SFO
1 stop8h 45m
Porter Airlines
Wed 12/21:45 pm
SFO
- YOW
1 stop7h 58m
Porter Airlines
Deal found 8/1![Porter Airlines logo]()
$481
Last-minute flights from Ottawa to San FranciscoDiscover last-minute flight deals from Ottawa to San Francisco. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ottawa to San Francisco. Data last updated August 1, 2026 and is based on user searches.
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:15 pm
YOW
- SFO
1 stop28h 40m
WestJet
Tue 8/251:00 pm
SFO
- YOW
1 stop8h 40m
WestJet
Deal found 7/28![WestJet logo]()
$388
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.
Tue 8/188:15 pm
YOW
- SFO
1 stop28h 40m
Multiple Airlines
Wed 8/2611:20 am
SFO
- YOW
2 stops22h 10m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$477
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.
Tue 8/186:15 pm
YOW
- SFO
2 stops30h 40m
WestJet
Mon 8/246:00 am
SFO
- YOW
1 stop8h 15m
WestJet
Deal found 7/28![WestJet logo]()
$485
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.
Sat 8/226:00 am
YOW
- SFO
1 stop9h 00m
Multiple Airlines
Mon 8/3110:35 pm
SFO
- YOW
2 stops15h 48m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Tue 8/256:00 am
YOW
- SFO
1 stop9h 00m
Multiple Airlines
Sat 8/2910:35 pm
SFO
- YOW
2 stops37h 20m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$428
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Thu 9/36:00 am
SFO
- YOW
1 stop10h 20m
WestJet
Deal found 7/28![WestJet logo]()
$508
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/306:00 am
YOW
- SFO
1 stop9h 00m
Multiple Airlines
Sun 9/61:07 pm
SFO
- YOW
2 stops37h 28m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/306:00 am
YOW
- SFO
1 stop9h 00m
Multiple Airlines
Mon 9/79:27 am
SFO
- YOW
2 stops28h 56m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$505
One-way flights from Ottawa to San FranciscoSearch for one-way flight options from Ottawa to San Francisco. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
Search for one-way flight options from Ottawa to San Francisco. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Deal found 7/29![WestJet logo]()
$212
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Deal found 7/28![WestJet logo]()
$217
This oojo deal was found by Cheapflights users on 7/31. 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 8/2912:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Deal found 7/31![WestJet logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/236:00 am
YOW
- SFO
2 stops12h 56m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$219
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.
Tue 8/186:00 am
YOW
- SFO
2 stops16h 56m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$220
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:20 am
YOW
- SFO
2 stops32h 05m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$222
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/236:00 am
YOW
- SFO
1 stop9h 00m
WestJet
Deal found 7/31![WestJet logo]()
$225
This oojo deal was found by Cheapflights users on 7/31. 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 9/1412:25 pm
YOW
- SFO
2 stops12h 30m
WestJet
Deal found 7/31![WestJet logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/316:00 am
YOW
- SFO
2 stops12h 56m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sun 8/3012:25 pm
YOW
- SFO
3 stops34h 31m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 9/137:20 am
YOW
- SFO
2 stops27h 54m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$231
Find flight deals from Ottawa to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to San Francisco (SFO). 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 August 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $361 (oojo) |
One-way from | $212 (Mytrip) |
Popular in | July |
Cheapest in | September |
Average price | $433 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ottawa to San Francisco 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 August 1, 2026.
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
Cheapest round-trip
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 10/19
12:25 pm-9:55 pm
2 stops12h 30m
San Francisco
Sat 10/24
1:00 pm-12:42 am
2 stops32h 42m
$371
Quickest round-trip
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 10/1
7:00 am-12:20 pm
1 stop8h 20m
San Francisco
Mon 10/5
1:20 pm-12:25 am
1 stop8h 05m
$464
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Fri 9/4
1:20 pm-9:55 pm
1 stop11h 35m
San Francisco
Mon 9/7
6:05 pm-3:20 pm
1 stop18h 15m
$471
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 11/25
7:00 am-12:45 pm
1 stop8h 45m
San Francisco
Tue 12/1
1:45 pm-12:43 am
1 stop7h 58m
$481
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 11/26
7:00 am-12:45 pm
1 stop8h 45m
San Francisco
Tue 12/1
1:45 pm-12:43 am
1 stop7h 58m
$481
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 11/26
7:00 am-12:45 pm
1 stop8h 45m
San Francisco
Wed 12/2
1:45 pm-12:43 am
1 stop7h 58m
$481
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Wed 9/30
6:55 am-12:20 pm
1 stop8h 25m
San Francisco
Wed 9/30
6:05 pm-5:35 am
1 stop8h 30m
$494
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Mon 10/12
1:20 pm-12:00 pm
1 stop25h 40m
San Francisco
Thu 10/15
6:00 am-11:35 am
2 stops26h 35m
$510
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Fri 10/2
8:40 am-9:55 pm
2 stops16h 15m
San Francisco
Mon 10/5
6:45 pm-7:20 pm
3 stops21h 35m
$517
Cheapest one-way
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Sat 10/10
7:20 am-8:42 am
2 stops28h 22m
$222
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Ottawa to San Francisco
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 Ottawa to San Francisco in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ottawa-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ottawa-San Francisco 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 Ottawa-San Francisco 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 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.
YOW-SFO
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 Ottawa to San Francisco
How far ahead should I book a flight from Ottawa to San Francisco?
The best time to book flights from Ottawa to San Francisco is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Ottawa to San Francisco?
Currently, September is the cheapest month in which you can book a flight from Ottawa to San Francisco (average of $360). Flying from Ottawa to San Francisco in July is currently the most expensive (average of $580). 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 $376 and $565 in October.The cheapest round-trip price found within the last 5 days was $361 on WestJet (Oct 7-Oct 12).
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated August 1, 2026.
Peruse reviews from past customers who have flown with Porter Airlines,United Airlines, andWestJet from Ottawa to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Food
7.5
Comfort
8.0
Entertainment
6.9
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.5
Comfort
8.0
Entertainment
6.9
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.5
Comfort
8.0
Entertainment
6.9
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.5
Comfort
8.0
Entertainment
6.9
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Boarding
8.2
Food
7.5
Comfort
8.0
Entertainment
6.9
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Related info for your journey
Find useful and relevant information for your journey from Ottawa to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Fairfield
Emeryville
Roseville
Burlingame
Rancho Cordova
San Bruno
Cupertino
Newark
Hayward
San Ramon
Redwood City
San Carlos
Turlock
Vallejo
San Lorenzo
Davis
Vacaville
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Ottawa and San Francisco flights
Browse other Ottawa and San Francisco flight options. Last updated on August 1, 2026.
Other flights from Ottawa
Browse through other flights departing from Ottawa. Flights are based on user searches made on Cheapflights and were last updated on August 1, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 1, 2026.
Top 4 airlines flying from Ottawa to San Francisco
Discover the top 4 airlines that operate flights from Ottawa to San Francisco. 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 August 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$263 | Average$387 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$276 | Average$459 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$312 | Average$448 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$335 | Average$672 | FlexibilityNo cancel fee | On-time67% |