Cheap Flights from San Antonio International to Ontario International

Return selected

origin

Enter the city you're flying from, or choose from the options below

Include nearby airports

selected

destination

. Enter your destination, or choose from the options below

Include nearby airports

selected

Travellers and cabin class, 1 Adult, Economy

Compare San Antonio International to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals Cheapest month Find the best route Route info FAQs Tips and advice

Flight deals from San Antonio International to Ontario International

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to Ontario International Airport? If you want to travel next month, return fares start from Rs53,534. Find the lowest prices on one-way and return tickets right here.

Ontario.Rs29,730 per passenger.Departing Wed, 7 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 7 Oct, arriving in Ontario International.Price includes taxes and charges.From Rs29,730, select.

Ontario.Rs32,442 per passenger.Departing Mon, 2 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Mon, 2 Nov, arriving in Ontario International.Price includes taxes and charges.From Rs32,442, select.

Ontario.Rs36,049 per passenger.Departing Wed, 23 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 23 Sep, arriving in Ontario International.Price includes taxes and charges.From Rs36,049, select.

Ontario.Rs41,922 per passenger.Departing Wed, 2 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 2 Dec, arriving in Ontario International.Price includes taxes and charges.From Rs41,922, select.

Ontario.Rs49,148 per passenger.Departing Mon, 11 Jan.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Mon, 11 Jan, arriving in Ontario International.Price includes taxes and charges.From Rs49,148, select.

Ontario.Rs53,463 per passenger.Departing Wed, 3 Feb.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Wed, 3 Feb, arriving in Ontario International.Price includes taxes and charges.From Rs53,463, select.

Ontario.Rs58,756 per passenger.Departing Wed, 3 Mar.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Wed, 3 Mar, arriving in Ontario International.Price includes taxes and charges.From Rs58,756, select.

Ontario.Rs63,195 per passenger.Departing Tue, 18 May.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Tue, 18 May, arriving in Ontario International.Price includes taxes and charges.From Rs63,195, select.

Ontario.Rs63,366 per passenger.Departing Sat, 17 Apr.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Sat, 17 Apr, arriving in Ontario International.Price includes taxes and charges.From Rs63,366, select.

Find the cheapest month to fly from San Antonio International to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to Ontario International flights are currently cheapest in October.

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

San Antonio International to Ontario International: Alternative routes

Compare routes from San Antonio International to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

San Antonio to Ontario: Flight information

The things to know before you go.

Cheapest flight found	Rs29,676
Cheapest month to fly	October

Finding cheap flights from San Antonio International to Ontario International: Frequently asked questions

How much are return flights from San Antonio International to Ontario International?

The best price we found for a return flight from San Antonio International to Ontario International is Rs53,534. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from San Antonio International to Ontario International?

Currently, there are no airlines that fly direct from San Antonio International to Ontario International. But we found flights with one or more stops from Rs53,534.

How many flights are there a week from San Antonio International to Ontario International?

As of September 2026, there are no flights flying from San Antonio International to Ontario International.

When is the cheapest time to fly from San Antonio International to Ontario International?

The cheapest month to fly from San Antonio International to Ontario International is usually October.

Which upcoming date is cheapest to fly from San Antonio International Airport to Ontario International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Ontario International Airport on Wednesday, 21 October 2026.

Can I get a direct flight from San Antonio International Airport to Ontario International Airport?

No airlines currently offer direct flights between San Antonio International Airport and Ontario International Airport. Most routes have one or more stops.

How can I find the best flight deal to Ontario International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Ontario?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from San Antonio International Airport to Ontario International with?

Currently, Frontier Airlines offers the cheapest flight tickets to Ontario International.

Flying from San Antonio International Airport (SAT) to Ontario International Airport (ONT): what you need to know

Ontario's timezone is UTC-8, which makes Ontario two hours behind San Antonio.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Make sure you're at the airport on time to catch your SAT to ONT flight.
You can expect longer queues in popular months like July. Arriving up to four hours in advance for an international flight and two hours for domestic departures will give you ample time for security and boarding.
Consider adding a stopover when booking your ticket from San Antonio International Airport to Ontario International Airport. Just deselect 'Direct flights only' to break up your trip, or visit a new city along the way. Here are some options between SAT and ONT:
- Houston George Bush Intercntl. Airport
- Phoenix Sky Harbour Airport
- Harry Reid International Airport

How to find the cheapest flights from San Antonio International Airport (SAT) to Ontario International Airport (ONT)

At the moment, Rs29,730 is the cheapest price we've seen for a one-way San Antonio International Airport to Ontario International Airport flight. The best price for a return ticket is Rs53,534. Keep in mind that fares could change due to demand when booking.
It's usually smart to book ahead of time if you want to find cheap tickets from SAT to ONT. That's because airlines change prices based on demand, which tends to rise closer to the date of departure.
The 'Whole month' tool shows you the cheapest flights from San Antonio International Airport to Ontario International Airport across the month. It's a great way to find a bargain if your travel plans are flexible.
Spend less time searching for cheap flights from SAT to ONT by setting up a Price Alert. We'll send you an email or notification on the app when a special offer becomes available.
Tailor your flights with filters. Choose your preferred arrival and departure times, airlines and total journey duration. You can also sort results by 'Fastest,' 'Cheapest' or 'Best' flights from San Antonio International Airport to Ontario International Airport.

Handy information about San Antonio International Airport (SAT)

You'll find SAT at 9800 Airport Boulevard.
San Antonio International Airport maintains a strong on-time record, reducing the likelihood of delays. Departures from SAT land at their destination as scheduled 82% of the time.
San Antonio International Airport is around 14 kilometres from central San Antonio. If you're driving, catching a taxi or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.
You can expect a journey time of about 50 minutes on public transport.
Have an early flight from San Antonio International Airport to Ontario International Airport? Avoid the last-minute rush to the terminal (and get some extra shut-eye) by choosing one of these stays close to SAT:

Arriving at Ontario International Airport (ONT)

The last thing you want is a long journey to your hotel if you're arriving on a late San Antonio International Airport to Ontario International Airport flight. Book one of these accommodation options near ONT instead:
Pick up a Ontario International Airport rental car and explore Ontario and beyond with your own wheels. Dollar, Fox - Rent A Car and Thrifty are top providers you can book with here.
Get the best deal by booking your vehicle from Ontario International Airport around three weeks ahead of your departure.

When to fly to Ontario International Airport (ONT)

July is the most popular month for flights from San Antonio International Airport to Ontario International Airport. For a quieter experience, visit Ontario in March.
Before locking in your flight from San Antonio International Airport to Ontario International Airport, consider the type of weather you enjoy. August is the warmest month in Ontario, with temperatures ranging from 16ºC to 36ºC.
February sees average temperatures of between 4ºC and 24ºC. Search for cheap tickets from SAT to ONT around that time if you want to travel when it's cooler.

Explore more of the United States

Los Angeles is just one of the many places in the United States waiting to be discovered once you've seen the sights of Ontario. Around 56 kilometres away to the west, popular attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.
If you're looking to explore another corner of the United States, head for San Diego, roughly 153 kilometres south of Ontario. San Diego Zoo, San Diego Balboa Park and USS Midway Museum are the start of reasons to visit.