Cheap flights from Allentown, PA to Ontario, CA

Choose between Frontier Airlines, Allegiant Air, or Spirit Airlines to find the best price

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How much do flights to Ontario cost?

Key info about flying to Ontario

Depart from
Lehigh Valley International
Arrive to
Ontario International
Average flights per week
87
Flight distance
Worth visiting
Griffith Observatory

Great deals from Allentown to Ontario

Check-in for a flight from Allentown to Ontario

NameCarrier codeIATA CodePassport needed during booking
Frontier AirlinesFFTF9No
Allegiant AirAAYG4No
Spirit AirlinesNKSNKNo
WestJetWJAWSNo
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
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
Book your trip to arrive at Ontario International, or Montclair (Ontario). The most popular airlines for this route are Frontier Airlines, Allegiant Air, Spirit Airlines, WestJet, and Alaska Airlines. Allentown and Ontario have 87 direct flights per week.

Frequently asked questions

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

Explore alternative trips

Flights from Allentown

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The nearest countries with flights to Ontario

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