Cheap flights from Ontario to Austin

Flights overview

Useful information for finding cheap flights from Ontario to Austin and booking your next trip
Cheapest round-trip flights $200
Frontier 1 stop 26 hr Thu, May 28 — Sun, May 31
The cheapest round-trip flight from Ontario to Austin is currently $200
Cheapest one-way flight $100
Frontier 1 stop 7 hr Wed, May 27
The cheapest one-way flight from Ontario to Austin is currently $100
Cheapest nonstop flights $397
Southwest Nonstop 3 hr Thu, Jul 9 — Mon, Jul 13
The cheapest nonstop round-trip flight from Ontario to Austin is currently $397
Last-minute weekend getaway $252
Frontier 1 stop 8 hr Sat, May 9 — Sun, May 10
The cheapest last-minute weekend getaway from Ontario to Austin is currently $252
Cheapest business class flights $448
Frontier 1 stop 13 hr Thu, Jun 4 — Mon, Jun 8
The cheapest business class round-trip flight from Ontario to Austin is currently $448
Fastest flight 2 hr 40 min The fastest nonstop flight from Ontario to Austin takes 2 hr 40 min
Nonstop flights Some days There are direct flights on this route 6 days a week: Mon, Tue, Wed, Thu, Fri, Sun.

When is the cheapest time to fly?

The cheapest month to fly from Ontario to Austin is typically September. The most expensive month to fly is typically March.
September
Cheapest
Typical prices: $140–275
March
Most expensive
Typical prices: $230–395

Popular airlines from Ontario to Austin

  • Southwest
    Nonstop
    from $277
    Typical price: $275–495
    6 weekly nonstop flights
    ONT - AUS Every Mon, Tue, Wed, Thu, Fri, Sun
    1332 weekly connecting flights
    ONT - AUS Every day
  • American
    from $308
    Typical price: $280–510
    468 weekly connecting flights
    ONT - AUS Every day
  • United
    from $277
    Typical price: $290–590
    185 weekly connecting flights
    ONT - AUS Every day
  • Delta
    from $277
    Typical price: $305–710
    120 weekly connecting flights
    ONT - AUS Every day
  • Alaska
    from $477
    Typical price: $325–710
    32 weekly connecting flights
    ONT - AUS Every day
  • Frontier
    from $200
    Typical price: $180–345
    25 weekly connecting flights
    ONT - AUS Every day

Popular airports near Ontario

  • Ontario International Airport (ONT)
    Ontario United States 11 min 2 mi
  • Los Angeles International Airport (LAX)
    Los Angeles United States 1 hr 7 min 44 mi
  • Tijuana International Airport (TIJ)
    Tijuana Mexico 2 hr 16 min 112 mi
  • San Diego International Airport (SAN)
    San Diego United States 1 hr 50 min 95 mi

Popular airports near Austin

  • Austin-Bergstrom International Airport (AUS)
    Austin United States 24 min 6 mi
  • Dallas Fort Worth International Airport (DFW)
    Dallas United States 3 hr 14 min 186 mi
  • George Bush Intercontinental Airport (IAH)
    Houston United States 2 hr 44 min 144 mi
  • San Antonio International Airport (SAT)
    San Antonio United States 1 hr 16 min 66 mi

Frequently asked questions about flying from Ontario to Austin

The cheapest flights from Ontario to Austin are usually in September. Typical ticket prices in September range from $140 to $275.
The cheapest round-trip flight from Ontario to Austin recently found on Google Flights was with Frontier from $200. The cheapest one-way flight was with Frontier from $100.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from Ontario to Austin is $277, flying from Jul 9 to Jul 12.
  • The cheapest American flight from Ontario to Austin is $308, flying from Jun 5 to Jun 7.
  • The cheapest United flight from Ontario to Austin is $277, flying from Jun 4 to Jun 8.
  • The cheapest Delta flight from Ontario to Austin is $277, flying from Jul 31 to Aug 2.
  • The cheapest Alaska flight from Ontario to Austin is $477, flying from May 9 to May 10.
  • The cheapest Frontier flight from Ontario to Austin is $200, flying from May 28 to May 31.
The cheapest round-trip flight from Ontario to Austin starts at $200 from Thu, May 28 to Sun, May 31. The cheapest one-way flight starts at $100 and departs on Wed, May 27.
2 hr 40 min is the shortest flight time from Ontario to Austin.
Austin has mild winters and very hot, humid summers that make some outdoor activities inadvisable. Most visitors arrive Mar–Sep. Spring sees crowds for the South by Southwest (SXSW) music and film festival (Mar) and the blooming of the bluebonnet (mid-Mar–mid Apr), which is the Texas state flower. Hotels are especially crowded during college graduation weekends (May). Fall's popular events are the Austin City Limits music festival (Sep), college football season (Sep–Nov) and the Austin Film Festival (Oct).
It's easy to use Google Flights to find the cheapest days to fly from Ontario to Austin.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from Ontario to Austin really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Ontario to Austin.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 6 nonstop flights and 1,332 connecting flights per week. Southwest flies from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS) .

Other popular airlines flying from Ontario to Austin are:
  • American offers 468 connecting flights per week. American flies from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS) .
  • United offers 185 connecting flights per week. United flies from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS) .
  • Delta offers 120 connecting flights per week. Delta flies from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS) .
  • Alaska offers 32 connecting flights per week. Alaska flies from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS) .
  • Frontier offers 25 connecting flights per week. Frontier flies from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS) .
The number of connecting flights refers to distinct flights with at least one stop between Ontario and Austin.
The cheapest round-trip flight from Ontario to Austin recently found on Google Flights was with Frontier from $200. The cheapest one-way flight was with Frontier from $100.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from Ontario to Austin is $277, flying from Jul 9 to Jul 12.
  • The cheapest American flight from Ontario to Austin is $308, flying from Jun 5 to Jun 7.
  • The cheapest United flight from Ontario to Austin is $277, flying from Jun 4 to Jun 8.
  • The cheapest Delta flight from Ontario to Austin is $277, flying from Jul 31 to Aug 2.
  • The cheapest Alaska flight from Ontario to Austin is $477, flying from May 9 to May 10.
  • The cheapest Frontier flight from Ontario to Austin is $200, flying from May 28 to May 31.
Southwest flies direct from Ontario to Austin.
  • There are 6 Southwest direct flights from Ontario to Austin per week. Flights are available on Monday, Tuesday, Wednesday, Thursday, Friday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between Ontario and Austin at price $252 is offered by Frontier from Sat, May 9 to Sun, May 10.
Southwest flies direct from Ontario to Austin.
  • There are 6 Southwest direct flights from Ontario to Austin per week. Flights are available on Monday, Tuesday, Wednesday, Thursday, Friday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
Direct flights from Ontario to Austin are only available on Monday, Tuesday, Wednesday, Thursday, Friday and Sunday.
The cheapest direct (nonstop) round-trip flights between Ontario and Austin start at $397 from Thu, Jul 9 to Mon, Jul 13 with Southwest.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Ontario to Austin, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between Ontario and Austin start at $448 from Thu, Jun 4 to Mon, Jun 8 with Frontier.
The cheapest economy class round-trip flights between Ontario and Austin start at $200 from Thu, May 28 to Sun, May 31.
To book business class trips from Ontario to Austin, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between Ontario and Austin starts at $252 from Sat, May 9 to Sun, May 10 with Frontier.
The cheapest last-minute deal between Ontario and Austin at price $252 is offered by Frontier from Sat, May 9 to Sun, May 10.
To find last-minute flight deals from Ontario to Austin, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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