Cheap flights from Sioux City, IA to Ontario, CA

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.

How much do flights to Ontario cost?

Most popular airline

Key info about flying to Ontario

Depart from
Sioux Gateway
Arrive to
Ontario International
Average flights per week
2
Flight distance
Worth visiting
Griffith Observatory

Great deals from Sioux City to Ontario

Not happy with the results? Try some of our useful filters

Check-in for a flight from Sioux City to Ontario

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUAYes

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
6 Dec
28°C12°C
13 Dec
18°C11°C
Saturday
7 Dec
26°C12°C
14 Dec
17°C9°C
Sunday
8 Dec
20°C12°C
15 Dec
20°C9°C
Monday
9 Dec
23°C9°C
16 Dec
22°C11°C
Tuesday
10 Dec
21°C10°C
17 Dec
17°C9°C
Wednesday
11 Dec
19°C10°C
18 Dec
19°C8°C
Thursday
12 Dec
22°C12°C
19 Dec
18°C10°C
The most popular airline for this route is United Airlines. Sioux City and Ontario have 2 direct flights per week.

Frequently asked questions

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

Explore alternative trips

Flights from Sioux City

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 Sioux City

Here is a list of countries people are flying to
Find the best connection from Sioux City to Ontario
Search flights

Get more out of Kiwi.com with our mobile application

Download boarding passes

One-click booking

Get exclusive offers and prices

Mobile trip notifications

We hack the system,
you fly for less