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SAT - ONT

Find cheap flights from San Antonio to Ontario from $49

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Ontario departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 5/26
Sun 6/2

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from San Antonio to Ontario (SAT-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:48 pm - 4:02 pmSAT-ONT
23h 14m1 stop
12:59 am - 8:23 amONT-SAT
5h 24m1 stop
$128Frontier
Find Deal
Wed, May 22 - Tue, May 28
6:40 pm - 9:06 amSAT-ONT
16h 26m1 stop
8:35 pm - 5:44 pmONT-SAT
19h 09m1 stop
$148Frontier
Find Deal
Thu, Sep 26 - Mon, Sep 30
10:59 pm - 6:26 amSAT-ONT
9h 27m1 stop
12:59 am - 10:47 amONT-SAT
7h 48m1 stop
$154Frontier
Find Deal
Fri, May 10 - Sun, May 12
6:16 pm - 11:43 pmSAT-ONT
7h 27m1 stop
6:00 am - 5:08 pmONT-SAT
9h 08m1 stop
$276Delta
Find Deal
Wed, May 22 - Wed, May 29
8:33 am - 11:47 amSAT-ONT
5h 14m1 stop
6:00 am - 6:36 pmONT-SAT
10h 36m1 stop
$297American Airlines
Find Deal
Thu, May 16 - Sun, May 26
6:25 pm - 11:42 pmSAT-ONT
7h 17m1 stop
5:00 pm - 12:59 amONT-SAT
5h 59m1 stop
$307Delta
Find Deal
Wed, Jun 19 - Mon, Jun 24
5:00 am - 10:03 amSAT-ONT
7h 03m1 stop
11:59 pm - 8:33 amONT-SAT
6h 34m1 stop
$346American Airlines
Find Deal
Sat, Jun 8 - Mon, Jun 10
4:31 pm - 8:38 pmSAT-ONT
6h 07m1 stop
1:34 pm - 11:56 pmONT-SAT
8h 22m1 stop
$377United Airlines
Find Deal
Sat, May 25 - Sat, Jun 1
4:50 pm - 8:32 pmSAT-ONT
5h 42m1 stop
6:02 am - 3:25 pmONT-SAT
7h 23m1 stop
$386United Airlines
Find Deal
Tue, Oct 1 - Fri, Oct 4
10:31 am - 10:57 pmSAT-ONT
14h 26m1 stop
12:58 am - 5:19 pmONT-SAT
14h 21m1 stop
$707Volaris
Find Deal
Thu, May 16 - Sat, May 25

Flights from San Antonio to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from San Antonio to Ontario to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all flights from San Antonio to Ontario clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from San Antonio to Ontario, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Ontario, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Antonio to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Antonio to Ontario is August, where tickets cost $306 on average. On the other hand, the most expensive months are March and June, where the average cost of tickets is $469 and $438 respectively.

How far in advance should I book a flight from San Antonio to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Antonio to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Antonio to Ontario, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 24 days before departure.

Which airlines provide the cheapest flights from San Antonio to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $49. KAYAK users also found San Antonio to Ontario round-trip flights on Frontier from $128 and on Delta from $276.

Good to know

Low season

February

High season

June

Cheapest flight

$49
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly with an average 16% increase in price.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Antonio to Ontario

  • What is the cheapest flight from San Antonio to Ontario?

    In the last 3 days, the lowest price for a flight from San Antonio to Ontario was $49 for a one-way ticket and $128 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from San Antonio to Ontario?

    When flying out of San Antonio you will be using San Antonio. You will be landing at Ontario, also known as Ontario.

  • Which aircraft models fly most regularly from San Antonio to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Antonio to Ontario?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between San Antonio and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Antonio to Ontario, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Antonio to Ontario are Delta and United Airlines. With an average price for the route of $438 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $555 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Antonio to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Antonio to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Antonio to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from San Antonio is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Antonio to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Antonio to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from San Antonio to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Antonio to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10975 reviews
8.2boarding
7.9comfort
8.6crew
7.4food
8.0entertainment
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

Too many fees (but that seems to apply to all airlines nowadays)

For a 22 minute flight all you expect is for it to be safe and comfortable

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Over two hours wait to get wheelchair assistance from arrival to the departure gate for LA was unreasonable even though there appreared to be heavy demand.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

Horrible. Delay after delay. People yelling and making obseen gestures!

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

See my previous comment which is mostly about our flight from Phoenix to SFO

Plane was clean but they do not allow bag drop until 1 hour before flight. Just encouraging late fees and other issues. The worst I have experienced. Total hostage situation, pay or you miss your flight.

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

The check in at the airport was awful. Told I need to pay for a bag. The item was taken at screening. I went back to get my $ back and they gave me a coupon with a QR code that doesn’t work. Worst costumer service ever!!!!!

Book cheap flights from San Antonio to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Antonio to Ontario found on KAYAK in the last 72 hours.
5/22Wed
1 stopFrontier
6h 11mSAT-ONT
$49
5/10Fri
1 stopFrontier
26h 39mSAT-ONT
$70
5/26Sun
1 stopDelta
6h 53mSAT-ONT
$139
7/14Sun
1 stopUnited Airlines
6h 52mSAT-ONT
$248
5/26Sun
1 stopUnited Airlines
5h 08mSAT-ONT
$289
5/4Sat
1 stopDelta
8h 07mSAT-ONT
$299
4/30Tue
2 stopsAmerican Airlines
7h 35mSAT-ONT
$312
5/19Sun
1 stopAmerican Airlines
4h 45mSAT-ONT
$328
5/10Fri
2 stopsAlaska Airlines
16h 53mSAT-ONT
$422
5/6Mon
2 stopsAlaska Airlines
12h 38mSAT-ONT
$447

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Last minute flights from San Antonio to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San Antonio to Ontario that are departing in the next 10 days.
4/29Mon
multi-stopFrontier
11h 27mSAT-ONT
5/2Thu
multi-stopFrontier
19h 20mONT-SAT
$217
4/29Mon
multi-stopFrontier
11h 27mSAT-ONT
4/30Tue
multi-stopFrontier
24h 09mONT-SAT
$260
4/27Sat
multi-stopFrontier
23h 11mSAT-ONT
5/2Thu
multi-stopFrontier
19h 03mONT-SAT
$279
4/27Sat
multi-stopDelta
10h 46mSAT-ONT
4/28Sun
multi-stopDelta
6h 07mONT-SAT
$634
4/26Fri
multi-stopDelta
7h 02mSAT-ONT
4/29Mon
multi-stopDelta
10h 03mONT-SAT
$654
4/27Sat
multi-stopAmerican Airlines
7h 22mSAT-ONT
4/28Sun
multi-stopAmerican Airlines
5h 22mONT-SAT
$659
4/27Sat
multi-stopAmerican Airlines
4h 54mSAT-ONT
5/3Fri
multi-stopAmerican Airlines
7h 42mONT-SAT
$781
4/29Mon
multi-stopUnited Airlines
5h 43mSAT-ONT
4/30Tue
multi-stopUnited Airlines
20h 50mONT-SAT
$853
4/26Fri
multi-stopUnited Airlines
8h 04mSAT-ONT
4/29Mon
multi-stopUnited Airlines
20h 50mONT-SAT
$876
4/29Mon
multi-stop
19h 17mSAT-ONT
5/1Wed
multi-stop
32h 03mONT-SAT
$1,377

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San Antonio - Ontario Flights

Departure:

San Antonio (SAT)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - San Antonio

Cabin classes: