Cheap flights from Ontario to San Sebastian from C$ 592
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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
Find flight deals from Ontario to San Sebastian
Cheapest flights from Ontario to San SebastianExplore the most affordable flight options available from Ontario to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.
Explore the most affordable flight options available from Ontario to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to San Sebastian 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 629,999 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Ontario to San Sebastian that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
MontrealSan Sebastian
YUL - EAS
YULEAS
Montreal Pierre Elliott Trudeau Intl
Tue 15/7
11:45 p.m.-8:30 a.m.
1 stop26h 45m
San Sebastián
Wed 13/8
9:10 a.m.-5:20 p.m.
1 stop14h 10m
MontrealSan Sebastian
YUL - EAS
YULEAS
Montreal Pierre Elliott Trudeau Intl
Sun 13/7
10:00 p.m.-8:50 p.m.
2 stops16h 50m
San Sebastián
Mon 11/8
9:20 a.m.-11:35 a.m.
2 stops32h 15m
MontrealSan Sebastian
YUL - EAS
YULEAS
Montreal Pierre Elliott Trudeau Intl
Sun 13/7
10:00 p.m.-8:40 a.m.
2 stops28h 40m
San Sebastián
Fri 15/8
9:30 p.m.-8:15 p.m.
2 stops28h 45m
MontrealSan Sebastian
YUL - EAS
YULEAS
Montreal Pierre Elliott Trudeau Intl
Sat 5/7
7:20 p.m.-8:40 a.m.
3 stops55h 20m
Best time to book a flight from Ontario to San Sebastian
Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Ontario with our price prediction graph.
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Everything you need to know about your flight from Ontario to San Sebastian
Related info for your journey
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Alternative routes for Ontario to San Sebastian
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How does Cheapflights help users find flights from Ontario to San Sebastian?
Deals for Ontario to San Sebastian flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Ontario to San Sebastian?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to San Sebastian for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Ontario to San Sebastian with no change fees?
Yes, we can. To see specific flights from Ontario to San Sebastian with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Ontario to San Sebastian become cheaper?
Of course! You can now track prices for flights from Ontario to San Sebastian and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.