SAT - ONT

$102 Find Cheap Flights from San Antonio to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$234
Typical prices: $286-$430
Frontier
Mon 12/3Fri 12/7
SAT - ONT • 1 stop
Cheapest one-way
$102
Typical prices: $145-$260
Frontier
Sun 11/11
SAT - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between San Antonio and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
16 weeks
in advance
Our data shows that travelers who book at least 16 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
When to travel
September
Cheapest • 39% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Dallas Love Field (DAL)
Cheapest • Avg $297 (round-trip)
Phoenix Sky Harbor Intl (PHX)
Shortest trip • 4h 50m (one-way)
Insights
Insights
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Flight Deals
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Flight Deals

Cheap Flights from San Antonio to Ontario (SAT-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Antonio to Ontario

Thu, Dec 3 - Mon, Dec 7
Frontier Logo
10:52 pm - 11:32 amSAT  San Antonio-ONT Ontario
14h 40m1 stop Las Vegas Harry Reid Intl
Frontier Logo
6:00 am - 8:02 pmONT  Ontario-SAT San Antonio
12h 02m1 stop Denver Intl
$234Frontier
Wed, Oct 7 - Sat, Oct 10
Frontier Logo
8:20 pm - 11:47 pmSAT  San Antonio-ONT Ontario
5h 27m1 stop Denver Intl
Frontier Logo
6:15 am - 7:26 pmONT  Ontario-SAT San Antonio
11h 11m1 stop Denver Intl
$234Frontier
Sat, Nov 7 - Tue, Nov 17
Frontier Logo
8:20 pm - 11:51 pmSAT  San Antonio-ONT Ontario
5h 31m1 stop Denver Intl
Frontier Logo
10:35 am - 9:34 pmONT  Ontario-SAT San Antonio
8h 59m1 stop Las Vegas Harry Reid Intl
$234Frontier
Sat, Oct 24 - Sat, Oct 31
American Airlines Logo
3:39 pm - 6:43 pmSAT  San Antonio-ONT Ontario
5h 04m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
10:25 am - 5:46 pmONT  Ontario-SAT San Antonio
5h 21m1 stop Dallas/Fort Worth
$292American Airlines
Tue, Nov 17 - Tue, Nov 17
Southwest Logo
8:25 am - 11:55 amSAT  San Antonio-ONT Ontario
5h 30m1 stop Las Vegas Harry Reid Intl
Southwest Logo
1:55 pm - 9:45 pmONT  Ontario-SAT San Antonio
5h 50m1 stop Denver Intl
$293Southwest
Tue, Nov 17 - Tue, Nov 17
Southwest Logo
6:45 am - 11:55 amSAT  San Antonio-ONT Ontario
7h 10m2 stops Dallas Love Field Las Vegas Harry Reid Intl
Southwest Logo
1:30 pm - 10:30 pmONT  Ontario-SAT San Antonio
7h 00m1 stop Las Vegas Harry Reid Intl
$298Southwest
Mon, Oct 5 - Wed, Oct 14
Delta Logo
6:01 pm - 11:47 pmSAT  San Antonio-ONT Ontario
7h 46m1 stop Salt Lake City
Delta Logo
5:03 pm - 12:30 amONT  Ontario-SAT San Antonio
5h 27m1 stop Salt Lake City
$314Delta
Mon, Oct 5 - Tue, Oct 6
Delta Logo
6:01 pm - 11:47 pmSAT  San Antonio-ONT Ontario
7h 46m1 stop Salt Lake City
Delta Logo
5:03 pm - 12:30 amONT  Ontario-SAT San Antonio
5h 27m1 stop Salt Lake City
$314Delta
Fri, Oct 9 - Tue, Oct 13
American Airlines Logo
7:54 pm - 11:52 pmSAT  San Antonio-ONT Ontario
5h 58m1 stop Dallas/Fort Worth
American Airlines Logo
11:59 pm - 8:40 amONT  Ontario-SAT San Antonio
6h 41m1 stop Dallas/Fort Worth
$417American Airlines
Wed, Sep 30 - Mon, Oct 5
American Airlines Logo
6:00 am - 12:06 pmSAT  San Antonio-ONT Ontario
8h 06m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
11:59 pm - 9:46 amONT  Ontario-SAT San Antonio
7h 47m1 stop Dallas/Fort Worth
$451American Airlines
Booking Insights

Price, demand and travel trends for San Antonio to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from San Antonio to Ontario with more confidence.

How much is a round-trip flight from San Antonio to Ontario?

Round-trip flights from San Antonio to Ontario start at $234. Prices are below average for this route right now, with typical round-trip fares ranging from $286 to $430. The lowest price found in the past 5 days was $234 on Frontier.

What's the cheapest day of the week to fly from San Antonio to Ontario?

Tuesday is the cheapest day of the week to fly from San Antonio to Ontario, it is 27% cheaper than the average day. Saturday is the most expensive day with flight prices 8% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from San Antonio to Ontario?

•September is the cheapest month to fly from San Antonio to Ontario at $226 round-trip.
•June ($421) and May ($405) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 86% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from San Antonio to Ontario the cheapest?

Flights from San Antonio to Ontario are cheapest 16 weeks before departure. Booking in this window typically costs about 28% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for San Antonio to Ontario flights

Low season

March

Cheapest flight

$102
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from San Antonio to Ontario

When to book flights from San Antonio to Ontario

Are your dates flexible? Find out the best times to travel from San Antonio to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your San Antonio to Ontario flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from San Antonio to Ontario?

    Flights from San Antonio to Ontario usually depart from San Antonio (SAT) and arrive at Ontario (ONT).

  • What cabin classes can I book on flights from San Antonio to Ontario?

    Only Economy Class is available on flights from San Antonio to Ontario.

  • Which airports do connecting flights from San Antonio to Ontario pass through?

    One-stop flights from San Antonio to Ontario most commonly connect through:

    • Phoenix Sky Harbor Intl (PHX) - 47% of one-stop connections
    • Denver Intl (DEN) - 37% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 13% of one-stop connections
    • Dallas/Fort Worth (DFW) - 1% of one-stop connections

    Phoenix Sky Harbor Intl (PHX) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from San Antonio to Ontario?

    Yes. Being flexible with your travel dates can save you up to 33% on the San Antonio to Ontario route. Tuesday is the cheapest departure day at $272 round-trip on average, while Saturday is the most expensive at $402, a difference of $130. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

  • How expensive are last-minute San Antonio to Ontario flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 8% above the route average of $371. Book 16 weeks before departure for the lowest fares.

  • How long is a flight from San Antonio to Ontario?

    A nonstop flight from San Antonio to Ontario takes 0h 00m, covering 1,163 miles.

  • Do I need a passport to fly from San Antonio to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from San Antonio to Ontario changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $234 to $1,441. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from San Antonio to Ontario looking right now?

    One-way fares from San Antonio to Ontario are currently lower than usual. Average one-way flight prices are about $155, which is 20% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from San Antonio to Ontario?

    Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 4h 50m, compared with 5h 22m via Houston George Bush Intcntl (IAH) and 5h 32m via Dallas Love Field (DAL).

  • What is the time difference between San Antonio and Ontario?

    Ontario is 2 hours behind San Antonio (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:
    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

  • How much should I expect to pay for a San Antonio to Ontario flight?

    Round-trip flights from San Antonio to Ontario range from $286 to $430, with an average of $371 over the past 12 months. Anything below $286 counts as a good deal.

Your guide to booking San Antonio to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Saturday. On this route, Tuesday flights average $272 - about $130 less than Saturday (32% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 16 weeks before you fly. On this route, that window historically saves about 28% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Antonio to Ontario trip for September. Fares historically average $226 round-trip in that month - typically $195 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.
    - Azure Hotel & Suites, Trademark Collection by Wyndham
    - La Quinta Inn & Suites by Wyndham Ontario Airport
    - Ontario Airport Inn

More options for your flight from San Antonio to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario