Cheap Flights to Ontario International Airport
Ontario International Airport serves the Inland Empire east of Los Angeles, with nonstop flights to major US cities and Mexico.
- Flexible Dates
- No Booking Fees
- Free Cancellation Options
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or request an offerAbout Ontario International Airport (ONT)
ONT is a convenient, uncrowded alternative to LAX, served by Southwest, American, Delta, United, Alaska and others.
IATA/ICAO codes
ONT / KONT
Location
Ontario, about 55 km east of Los Angeles
Key airline
Southwest, American, Delta, United
Notable feature
Easier alternative to LAX
Popular Routes
ONT’s network spans major US cities and Mexico.
Route Type
Popular Connections
US Hubs
Dallas/Fort Worth, Denver, Phoenix, Las Vegas, Seattle, Chicago
Mexico
Guadalajara, Mexico City
Best Time to Book Cheap Flights
Holidays and summer are busy. Booking 4 to 8 weeks ahead is recommended.
About Ontario, California
Ontario is a growing Inland Empire city, close to Rancho Cucamonga, Riverside and the San Bernardino Mountains.
Things to Know When Flying Into Ontario, California
Rental cars and rideshares are widely available.
Metrolink trains serve nearby stations.
Traffic on Southern California freeways can be heavy.
Palm Springs and the mountains are within reach.
Why Book Your Ontario, California Flights with Airline Tickets Services
Fare comparisons across Southwest, American, Delta and more for ONT itineraries
Guidance on choosing between ONT, LAX and Burbank
Flexible booking for family and business travel
Real-time pricing to help you find the lowest available fares
Support for multi-city US itineraries
FAQs — Flights to International Airport
ONT offers a quick, low-stress option for the Inland Empire and eastern Los Angeles County.
Southwest, American, Delta, United, Alaska and other airlines operate scheduled service.
Downtown LA is about 55 km west, roughly 45 to 60 minutes without heavy traffic.
Phoenix, Las Vegas and Denver are among the busiest.
Booking 4 to 8 weeks in advance is recommended; holidays are peak times.
Ready to Book Your Flight to Ontario, California?
Compare live fares to Ontario International Airport (ONT) and start planning your trip today.
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