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Home / San Jose — Ontario

Cheap flights San Jose — Ontario

San Jose (SJO, CR) Ontario (ONT, US)
from $387 4 341 km ~5h 36m 2 flights found 2 airlines cheapest on Thursday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $387 on 26.11.2026
Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.
November 2026
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Th
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December 2026
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January 2027
Mo
Tu
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Prices found for 2 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
26 Nov 2026, Thu
United Airlines UA 1447
17:45
SJO Juan Santamaria International Airport
01:09
ONT Ontario International Airport
7h 24m 1 stop
Farera
$387
View this ticket
05 Jan 2027, Tue
American Airlines AA 358
23:02
SJO Juan Santamaria International Airport
08:56
ONT Ontario International Airport
9h 54m 2 stops
Авиасейлс
$639
View this ticket
Route characteristics
Distance
4 341 km
Flight time
5h 36m
Time difference
-2h
Minimum price
from $387 (26.11.2026)
Average price
$513
Maximum price
$639
Cheapest day
Thursday
Departure airports (1)
SJO Juan Santamaria International Airport
Arrival airports (1)
ONT Ontario International Airport
Airlines (2)
UA United Airlines AA American Airlines
Agencies (2)
Farera Авиасейлс
Prices by day of week
Tuesday
$639
avg $639
Thursday
$387
avg $387
Cheapest
Price trend by month
November 2026
from $387
avg $387
1 flights
January 2027
from $639
avg $639
1 flights
Airlines — cheapest prices 2
United Airlines
United Airlines
1 flights · 1 days
$387
American Airlines
American Airlines
1 flights · 1 days
$639
Where to buy tickets 2
Farera
1 tickets · 1 days
from $387
Авиасейлс
1 tickets · 1 days
from $639
Airports

From — San Jose (1)

  • SJO Juan Santamaria International Airport

To — Ontario (1)

  • ONT Ontario International Airport
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Frequently asked questions about the route San Jose — Ontario
How long is the flight from San Jose to Ontario?
Approximate flight time — 5h 36m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from San Jose to Ontario?
The straight-line distance — 4 341 km.
How much do flights from San Jose to Ontario cost?
The minimum price over 3 months — from $387 on 26.11.2026.
What is the average ticket price?
The average price — $513. Range: $387 — $639.
What is the time difference between San Jose and Ontario?
The difference — -2h.
From which airports does San Jose operate flights?
From San Jose: SJO (Juan Santamaria International Airport).
To which airports in Ontario do flights arrive?
To Ontario: ONT (Ontario International Airport).
Which airlines fly this route?
This route is served by 2 airlines: United Airlines, American Airlines.
Which day of the week is cheapest?
The cheapest day of the week — Thursday.
When is the best time to buy tickets?
Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.
How do I book flights?
Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.
About the route San Jose — Ontario

Flights San Jose — Ontario is a popular route. The straight-line distance is 4 341 km. Flight time 5h 36m. Time difference -2h.

From San Jose (SJO) flights depart from 1 airport: SJO. To Ontario (ONT) — 1 arrival airport: ONT.

2 airlines operate on this route: United Airlines, American Airlines.

The minimum price for the next 3 months — from $387 (26.11.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $513, ranging from $387 to $639. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Thursday.

Other destinations in United States from San Jose
Orlando
US
Las Vegas
US
Los Angeles
US
Miami
US
New York
US
Oakland
US
San Francisco
US
Newburgh
US

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