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Cheap flights from Ontario to San Antonio from US$139
There are no direct flights from Ontario to San Antonio. The fastest way is one stop via Phoenix or Las Vegas, about 3h 57m door to door (242 connections a week on current schedules), with fares from US$139.
No direct flights · 6 connection options From 3h 55m Cheapest in November Prices checked 14 days ago
Ontario to San Antonio at a glance
Cheapest one-wayUS$139Frontier Airlines · 1 stop · Mon 9 NovFastest journey3h 55mFrontier Airlines · 1 stop
Nonstop flightsNoneConnect via Phoenix or Las Vegas
Best ways to fly from Ontario to San Antonio
Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.
1Search
ONT Phoenix (PHX) SAT
Leg 1: American Airlines, Southwest Airlines · Leg 2: American Airlines, Frontier Airlines, Southwest Airlines
Mon08:00 ONT09:02 PHX0h 58m connection10:00 PHX13:57 SATSouthwest Airlines
2Search
ONT Las Vegas (LAS) SAT
Leg 1: Frontier Airlines, Southwest Airlines · Leg 2: Frontier Airlines, Southwest Airlines
Mon08:30 ONT09:20 LAS0h 55m connection10:15 LAS14:42 SATSouthwest Airlines
3Search
ONT Denver (DEN) SAT
Leg 1: Frontier Airlines, Southwest Airlines, United Airlines · Leg 2: Frontier Airlines, Southwest Airlines, United Airlines
Thu08:30 ONT11:25 DEN0h 50m connection12:15 DEN15:10 SATSouthwest Airlines
4Search
ONT Dallas (DFW) SAT
Leg 1: American Airlines, Frontier Airlines · Leg 2: American Airlines, Envoy Air
Mon14:30 ONT19:17 DFW0h 58m connection20:15 DFW21:10 SATAmerican Airlines
5Search
ONT Salt Lake City (SLC) SAT
Leg 1: Delta Air Lines · Leg 2: Delta Air Lines
Wed06:00 ONT08:32 SLC1h 13m connection09:45 SLC13:18 SATDelta Air Lines
6Search
ONT Houston (IAH) SAT
Leg 1: Frontier Airlines, United Airlines · Leg 2: United Airlines, Mesa Airlines
Mon09:30 ONT14:27 IAH2h 18m connection16:45 IAH17:25 SATFrontier Airlines + Mesa Airlines
Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.
Cheapest dates from Ontario to San Antonio
The lowest one-way fares found recently, cheapest first. Prices change; click through for the live fare.
Good to know
- Distance
- 1,879 km1,167 miles
- Journey time
- 3h 55mfastest found
- Time difference
- +2hSan Antonio vs Ontario
- Currency in San Antonio
- USD
- Airports
- ONT → SAT
Flights from Ontario to San Antonio: questions answered
How much is a flight from Ontario to San Antonio?
The cheapest one-way fare we found recently is US$139 with 1 stop, departing in November. Prices change constantly, so search your dates for the live fare.
Are there direct flights from Ontario to San Antonio?
No. There is no nonstop service, so you will connect, most easily in Phoenix, Las Vegas and Denver. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from Ontario to San Antonio?
With one connection the journey usually takes around 3h 55m, depending on the layover. The straight-line distance is 1,879 km.
Where do you change planes between Ontario and San Antonio?
The best connecting points are Phoenix (PHX), Las Vegas (LAS), Denver (DEN) and Dallas (DFW). American Airlines flies both legs via Phoenix, so you can book it as one ticket.
Which airports serve Ontario and San Antonio?
Ontario: Ontario International Airport (ONT). San Antonio: San Antonio International Airport (SAT).
What is the time difference between Ontario and San Antonio?
San Antonio is 2 hours ahead of Ontario.
