Cheap flights from Austin, TX to Ontario, CA

Flights starting at $73. Choose between Frontier Airlines, United Airlines, or Alaska Airlines to find the best price.

One search, all the flights

We find you the best flight deals and travel hacks so that you can choose how to book.

Rise above all travel anxieties

With the Kiwi.com Guarantee we have your back with whatever happens.

Trusted by millions

Join over 10 million yearly travellers booking with ease.

Tips to know when travelling to Ontario

The most popular airlines for this route are Frontier Airlines, United Airlines, and Alaska Airlines. Austin and Ontario have 40 direct flights per week.

Check-in for a flight from Austin to Ontario

NameCarrier codeIATA CodePassport needed during booking
Frontier AirlinesFFTF9No
United AirlinesUALUAYes
Alaska AirlinesASAASNo

Weather in Ontario

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January18°C7°C
February18°C7°C
March20°C8°C
April23°C10°C
May25°C12°C
June29°C16°C
July33°C19°C
August33°C20°C
September32°C18°C
October27°C15°C
November22°C10°C
December17°C7°C
Hottest Month
33°C
August
Coldest month
7°C
February
Sunny days
340
days per year

14 day forecast

Friday
15 Nov
15°C9°C
22 Nov
24°C14°C
Saturday
16 Nov
18°C6°C
23 Nov
25°C15°C
Sunday
17 Nov
21°C8°C
24 Nov
21°C13°C
Monday
18 Nov
17°C9°C
25 Nov
84%
17°C12°C
Tuesday
19 Nov
19°C9°C
26 Nov
88%
16°C11°C
Wednesday
20 Nov
22°C11°C
27 Nov
16°C9°C
Thursday
21 Nov
23°C12°C
28 Nov
20°C9°C

Frequently asked questions

What are the most popular routes to and from Austin?
What are the most popular routes to and from Ontario?
What airports are near Austin?
What airports are near Ontario?
Which airlines fly between Austin and Ontario?
When's the best time to travel between Austin and Ontario?
What flights operate between Austin and Ontario?
How many airports are there near Austin?
How many airports are there near Ontario?
What time do nonstop (direct) flights between Austin and Ontario depart?
What time do nonstop (direct) flights between Austin and Ontario arrive?
What time do flights between Austin and Ontario depart?
What time do flights between Austin and Ontario arrive?

Explore alternative trips

Flights from Austin

Flights to Ontario

Popular routes

The nearest countries with flights to Ontario

Here is a list of countries people are flying from

Other destination countries from Austin

Here is a list of countries people are flying to
Find the best connection from Austin to Ontario
Search flights
We hack the system,
you fly for less