ONT
Ontario International
Ontario, USA · 30 destinations
🌍
4 countries
📈
Southwest Airlines, Frontier Airlines, Alaska Airlines
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Filters
SEA
Seattle
USA
AS
Alaska Airlines
DL
Delta Air Lines
F9
Frontier Airlines
Multiple daily
~2h 28m
About ONT
Ontario International (ONT) is an airport in Ontario, USA serving 30 nonstop destinations across 4 countries. The largest operators are Southwest Airlines, Frontier Airlines and Alaska Airlines. Updated 19 October 2026.
Frequently asked questions
How many nonstop destinations does ONT have?
ONT (Ontario International) serves 30 nonstop destinations across 4 countries.
Which airlines fly nonstop from ONT?
Airlines flying nonstop from ONT include Delta Air Lines, Southwest Airlines, Alaska Airlines, American Airlines, United Airlines, Frontier Airlines, Volaris, JetBlue Airways, AVIANCA, China Airlines and 1 more.
What is the ICAO code for ONT?
The ICAO code for ONT (Ontario International) is KONT.
- ICAO
- KONT
- Route data
- updated 30 days ago