$92 Find Cheap Flights from Austin to Ontario - Compare and Save

Among airlines operating Austin to Ontario flights:

• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only Southwest operates flights between Austin and Ontario.

Flights from Austin to Ontario usually depart from Austin Bergstrom (AUS) and arrive at Ontario (ONT).

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag in Economy Class class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Austin to Ontario:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $216 round-trip via Houston George Bush Intcntl (IAH), compared to $467 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 variants.

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

• Phoenix Sky Harbor Intl (PHX) - 54% of one-stop connections
• Denver Intl (DEN) - 23% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 9% of one-stop connections
• Salt Lake City (SLC) - 7% of one-stop connections

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

On the Austin to Ontario route, being flexible with your departure day can save you up to 18%. Saturday is the cheapest day at $328 round-trip on average, while Monday is the most expensive at $399: a $71 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Morning is the busiest departure period on Austin to Ontario flights, with 100% of flights leaving in that window. Afternoon departures account for 0%, evening flights for 0%, and night flights for 0%.

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.

These are the earliest and latest flight times available from Austin to Ontario:

• Earliest: departs at 10:25 am and lands at 1:30 pm
• Latest: departs at 7:50 pm and lands at 10:55 pm.

The flight takes about 3h 05m.

Last-minute fares on this route - booked within 2 weeks of departure - run 30% above the route average of $352. Book 14 weeks before departure for the lowest fares.

A nonstop flight from Austin to Ontario takes 3h 05m, covering 1,193 miles.

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.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $186 to $1,324. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from Austin to Ontario are currently lower than usual. Average one-way flight prices are about $116, which is 49% below the typical average for this route.

Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 4h 50m, compared with 5h 02m via Houston Hobby (HOU) and 5h 41m via Houston George Bush Intcntl (IAH).

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

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

Round-trip flights from Austin to Ontario range from $276 to $458, with an average of $352 over the past 12 months. Anything below $276 counts as a good deal.