$143 Cheap Frontier Airlines flights from San Antonio to Ontario (SAT to ONT)

Find The Best Day To Fly from San Antonio to Ontario

Amazing Frontier Airlines SAT to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $244 round trip and $143 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Aug 7 - Tue, Aug 12
SAT
San Antonio
ONT
Ontario
$244 Roundtrip, found 1 day ago
$244
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Aug 7 from San Antonio to Ontario, returning Tue, Aug 12, priced at $244 found 1 day ago
Thu, Aug 7 - Tue, Aug 12
SAT
San Antonio
ONT
Ontario
$256 Roundtrip, found 1 day ago
$256
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Aug 7 from San Antonio to Ontario, returning Tue, Aug 12, priced at $256 found 1 day ago
Mon, Sep 15 - Thu, Sep 18
SAT
San Antonio
ONT
Ontario
$256 Roundtrip, found 4 days ago
$256
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Sep 15 from San Antonio to Ontario, returning Thu, Sep 18, priced at $256 found 4 days ago
Mon, Sep 15 - Thu, Sep 18
SAT
San Antonio
ONT
Ontario
$263 Roundtrip, found 4 days ago
$263
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Sep 15 from San Antonio to Ontario, returning Thu, Sep 18, priced at $263 found 4 days ago
Mon, Aug 25 - Fri, Aug 29
SAT
San Antonio
ONT
Ontario
$267 Roundtrip, found 4 days ago
$267
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Aug 25 from San Antonio to Ontario, returning Fri, Aug 29, priced at $267 found 4 days ago
Tue, Jul 29 - Tue, Aug 5
SAT
San Antonio
ONT
Ontario
$268 Roundtrip, found 1 day ago
$268
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Jul 29 from San Antonio to Ontario, returning Tue, Aug 5, priced at $268 found 1 day ago

ONT From SAT Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Azure Hotel & Suites, Trademark Collection by Wyndham

Azure Hotel & Suites, Trademark Collection by Wyndham

3 out of 5
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San Antonio (SAT) to Ontario (ONT)
Ontario Airport Hotel & Conference Center

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Frequently asked questions

Can I catch a flight from SAT to Los Angeles - Ontario Intl. Airport (ONT) right now?
It's always wise to know about any travel advice reports and quarantine requirements in place in your destination city. Ensure you check out the Covid-19 Travel Advisor for up-to-date information on booking a flight to Los Angeles - Ontario Intl. Airport (ONT) from SAT.
What terminal is Frontier Airlines at SAT?
You should find out which terminal Frontier Airlines operates from at San Antonio Intl. Airport (SAT) once you're issued with your ticket. The same goes for information about your arrival at ONT. If those details are missing, ask your airline.
Are there Frontier Airlines non-stop flights from SAT to ONT?
If you're flying with Frontier Airlines from San Antonio Intl. Airport (SAT) to Ontario Airport, you'll have to make a stopover. While you're waiting for your connection, use the time to grab a refreshment or explore the airport shops.
How long is a Frontier Airlines flight from SAT to ONT?
As it'll take around 4 hours and 15 minutes for your Frontier Airlines flight to journey from SAT to Los Angeles - Ontario Intl. Airport (ONT), consider sticking a few travel games in your carry-on bag. You never know --- the person sitting next to you might appreciate the opportunity to play to break up the trip.
How many direct and indirect flights does Frontier Airlines fly from SAT to ONT?
No fewer than 9 Frontier Airlines flights service the route between SAT and ONT per week.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Ontario Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.
Frontier Airlines Airports
Hop on a(n) Frontier Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
DENUSADenver Intl.13
MCOUSAOrlando Intl.7
CUNMEXCancun Intl.6
GDLMEXDon Miguel Hidalgo y Costilla Intl.5
PHLUSAPhiladelphia Intl.2
ORDUSAO'Hare Intl.2
MIAUSAMiami Intl.1
LASUSAMcCarran Intl.1
MEXMEXMexico City Intl.1
LAXUSALos Angeles Intl.1

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