Ontario International Airport Guide
Ontario International Airport sits 58 km east of downtown Los Angeles in San Bernardino County, California. It serves as a less congested alternative to LAX for the Inland Empire — a region of more than 4 million people spanning San Bernardino and Riverside counties. The airport handled 7.1 million passengers in 2024, a 67% increase since 2016 when the Ontario International Airport Authority took over from Los Angeles World Airports.
Commercial service at Ontario dates to 1946, when Pacific Overseas Airlines inaugurated trans-Pacific passenger flights. The airport has two terminals across 530,000 sq ft with 26 passenger gates plus a dedicated international arrivals facility. Southwest Airlines carries the largest share of passengers at 36%, followed by American Airlines and Frontier. International destinations include Taiwan, El Salvador, and Mexico.
Ontario is also a major cargo hub, ranking eighth in the United States by cargo volume in 2024 with 793,370 tonnes of freight and mail. UPS Airlines uses the airport as a West Coast hub, and FedEx Express maintains a significant distribution operation here. Two parallel runways handle over 100,000 aircraft operations per year.
Services
5 of 6 availableCompare 37 listed options at Ontario International Airport, spanning parking, car rentals, lounges, hotels and shuttles. Each guide sets out locations, distance from the airport, key features and links to book direct, so you can weigh cost against convenience before you fly. Select a service below to see every provider we track for Ontario International Airport.
Location
Key facts
- Size
- 7.1M passengers (2024)2 runwaysopened 1946
- Location
- 34.056, -117.601
- Operator
- Ontario International Airport Authority
Terminals
2 terminalsOntario International Airport has 2 passenger terminals — Terminal 2 and Terminal 4, handling both international and domestic flights for around 12 airlines. Check which terminal your airline uses before you travel, as check-in, security and boarding points differ between them, and moving from one to another can take time.
- Terminal 2Mixed
Alaska Airlines, Avianca, China Airlines, Delta Air Lines, Frontier Airlines, JetBlue, United Airlines, Volaris
- Terminal 4Domestic
American Airlines, Hawaiian Airlines, Southwest Airlines, Starlux Airlines
Nearby cities
4 citiesOntario International Airport is closest to Ontario (5 km east), and also serves Riverside, San Bernardino and other nearby areas. With 4 towns and cities within reach, it is a practical gateway for the wider region. Distances shown are straight-line from the airport, so allow extra time for road transfers, traffic and parking.
- Ontario5 km east
- Riverside35 km southeast
- San Bernardino35 km east
- Los Angeles58 km west
Frequently Asked Questions
What are the airport codes for Ontario International Airport?
What are the airport codes for Ontario International Airport?
Where is Ontario International Airport located?
Where is Ontario International Airport located?
What services are available at Ontario International Airport?
What services are available at Ontario International Airport?
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