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Home / San Antonio — Ontario

Cheap flights San Antonio — Ontario

San Antonio (SAT, US) Ontario (ONT, US)
from $100 1 879 km ~2h 43m 2 flights found 1 airlines cheapest on Sunday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $100 on 05.12.2026
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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Fr
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Su
December 2026
Mo
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January 2027
Mo
Tu
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Prices found for 3 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
06 Dec 2026, Sun
Frontier Airlines F9 2355
03:47
SAT San Antonio International Airport
08:31
ONT Ontario International Airport
4h 44m 1 stop
Flightnetwork
$100
View this ticket
13 Nov 2026, Fri
Frontier Airlines F9 2355
05:20
SAT San Antonio International Airport
10:11
ONT Ontario International Airport
4h 51m 1 stop
Farera
$176
View this ticket
Route characteristics
Distance
1 879 km
Flight time
2h 43m
Time difference
-2h
Minimum price
from $100 (05.12.2026)
Average price
$125
Maximum price
$176
Cheapest day
Sunday
Departure airports (1)
SAT San Antonio International Airport
Arrival airports (1)
ONT Ontario International Airport
Airlines (1)
F9 Frontier Airlines
Agencies (2)
Flightnetwork Farera
Prices by day of week
Friday
$176
avg $176
Sunday
$100
avg $100
Cheapest
Price trend by month
November 2026
from $176
avg $176
1 flights
December 2026
from $100
avg $100
1 flights
Airlines — cheapest prices 1
Frontier Airlines
Frontier Airlines
Low-cost 2 flights · 2 days
$100
Where to buy tickets 2
Flightnetwork
1 tickets · 1 days
from $100
Farera
1 tickets · 1 days
from $176
Airports

From — San Antonio (1)

  • SAT San Antonio International Airport

To — Ontario (1)

  • ONT Ontario International Airport
Other destinations from San Antonio
Atlanta
US · Hub
Nashville
US
Boston
US
Baltimore
US
Chattanooga
US
Chicago
US
Charlotte
US · Hub
Corpus Christi
US
Cancun
MX
Cincinnati
US
Denver
US · Hub
Dallas
US · Hub
Frequently asked questions about the route San Antonio — Ontario
How long is the flight from San Antonio to Ontario?
Approximate flight time — 2h 43m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from San Antonio to Ontario?
The straight-line distance — 1 879 km.
How much do flights from San Antonio to Ontario cost?
The minimum price over 3 months — from $100 on 05.12.2026.
What is the average ticket price?
The average price — $125. Range: $100 — $176.
What is the time difference between San Antonio and Ontario?
The difference — -2h.
From which airports does San Antonio operate flights?
From San Antonio: SAT (San Antonio 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 1 airline: Frontier Airlines.
Which day of the week is cheapest?
The cheapest day of the week — Sunday.
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 Antonio — Ontario

Flights San Antonio — Ontario is a popular route. The straight-line distance is 1 879 km. Flight time 2h 43m. Time difference -2h.

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

1 airline operate on this route: Frontier Airlines.

The minimum price for the next 3 months — from $100 (05.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $125, ranging from $100 to $176. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Sunday.

Other destinations in United States from San Antonio
Orlando
US
Providence
US
Palm Springs
US
Pensacola
US
Phoenix
US
Philadelphia
US
New Orleans
US
Kansas City
US

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