Ontario to Austin

ONTAUS

Fly from Ontario to Austin starting at USD 140 with Alaska Airlines.Best fare available on Nov 13, 2026.Limited seats. Better plans. Book before it's gone.

Ontario to Austin cheapest flights this week

24 Jul
Frontier Airlines
06:00ONT
11:30AUS
1 StopUSD 155VIEW DEAL
24 Jul
Frontier Airlines
11:52ONT
13:09AUS
1 StopUSD 141VIEW DEAL
28 Jul
Frontier Airlines
06:00ONT
22:07AUS
1 StopUSD 210VIEW DEAL
3 Aug
Frontier Airlines
06:00ONT
22:07AUS
1 StopUSD 161VIEW DEAL
23 Oct
Southwest Airlines
13:05ONT
19:15AUS
1 StopUSD 152VIEW DEAL
13 Nov
Alaska Airlines
06:00ONT
16:32AUS
1 StopUSD 140VIEW DEAL
14 Nov
Alaska Airlines
06:00ONT
16:32AUS
1 StopUSD 140VIEW DEAL

Ontario to Austin monthly flight fare trend

Jul
from USD 141
Aug
from USD 161
Sep
No flights
Oct
from USD 152
Nov
from USD 140
Dec
No flights

Airport Details

Origin

Ontario

Ontario International Airport (ONT)

Ontario, ONT
Zone

Los Angeles

Elev

944 ft

Destination

Austin

Austin Bergstrom International Airport (AUS)

Austin, AUS
Zone

Chicago

Elev

542 ft