Ontario International Airport Breaks New Travel Records In 2026 As More Than 3.4 Million Passengers Choose Southern California Gateway

Written By: Pappu Mazumder

Pappu Mazumder

I bring a journalist’s perspective to the travel and tourism industry, contributing to Travel and Tour World through engaging storytelling, industry insights, and creative ideas. I focus on exploring emerging trends, highlighting key developments, and sharing meaningful stories that connect the global travel community while inspiring curiosity, innovation, and discovery.

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July 24, 2026 11:15 PM

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Ontario International Airport (ONT) has reached a major milestone in 2026 after recording its strongest first-half passenger performance since returning to local ownership, with more than 3.4 million travellers passing through the Southern California gateway during the first six months of the year. The airport’s continued growth has been supported by rising international demand, expanding airline connectivity and a powerful increase in air cargo activity that is strengthening its position as a key aviation and logistics hub.

During January to June 2026, ONT handled 3,412,579 passengers, representing a 1.9% increase compared with 3,350,498 travellers during the same period in 2025. The result marks the highest half-year passenger volume recorded at the airport during its decade under local control, highlighting its growing importance within the Southern California aviation market.

The airport’s performance reflects a wider shift in passenger preferences, with more travellers choosing alternative gateways outside traditional major airports due to convenience, accessibility and efficient operations.

Ontario International Airport Records Strong International Passenger Growth In 2026

The biggest growth area for Ontario International Airport during the first half of 2026 came from international travel. The airport welcomed 346,219 international passengers, an impressive 45.7% increase compared with 237,669 passengers during the first six months of 2025.

International passenger numbers have become an important driver of ONT’s expansion strategy as airlines continue increasing services connecting Southern California with global destinations. The strong rise demonstrates growing demand for international connectivity from the Inland Empire and surrounding communities.

In June 2026 alone, ONT handled 53,871 international passengers, compared with 47,504 passengers in June 2025, representing a 13.4% year-on-year increase.

Domestic passenger traffic remained the airport’s largest segment, although it recorded a slight decline during the first half of the year. Domestic travellers reached 3,066,360 passengers, compared with 3,112,829 passengers in 2025, representing a 1.5% decrease.

Despite the minor domestic decline, the airport’s overall passenger growth was driven by international expansion and continued demand for efficient air travel options.

Southwest Airlines Leads Ontario International Airport Passenger Market

Airline operations at Ontario International Airport continued to be led by major US carriers during June 2026, with several airlines contributing significantly to passenger movement.

Southwest Airlines remained the largest carrier at ONT, accounting for 36.5% of passenger traffic in June 2026. The airline’s strong presence reflects its long-standing role in connecting Southern California travellers with domestic destinations.

Other leading airlines included American Airlines with 14.4% of passenger share, followed by Alaska Airlines at 10.7%, Frontier Airlines at 10.4%, and Delta Air Lines at 9.3%.

The diverse airline mix provides passengers with greater choices across domestic routes while supporting the airport’s ambition to expand its network and attract additional services.

Ontario International’s competitive advantage comes from its location, operational efficiency and ability to provide travellers with an alternative to more congested airports in the Los Angeles region.

ONT Strengthens Position As Major North American Air Cargo Hub

Beyond passenger growth, Ontario International Airport delivered another year of strong cargo performance, reinforcing its reputation as one of North America’s leading freight gateways.

The airport processed 428,217 tons of air cargo during the first six months of 2026, representing a 7.6% increase compared with 397,823 tons during the same period in 2025.

The growth was mainly driven by freight activity, which reached 368,923 tons, an 11.2% increase compared with 331,703 tons in 2025.

June 2026 alone recorded significant cargo momentum, with total cargo volumes reaching 71,219 tons, up 8% compared with 65,423 tons in June 2025.

Freight volumes during June reached 61,777 tons, representing an 11.2% year-on-year increase, while mail volumes declined by 4.2% to 9,441 tons.

The continued cargo expansion strengthens ONT’s role as a vital supply chain centre supporting businesses across Southern California and beyond.

Strategic Location Helps Ontario International Airport Expand Global Aviation Role

Ontario International Airport’s growth is closely linked to its strategic location within one of the largest economic regions in the United States. Situated in the Inland Empire, the airport benefits from strong connections to major highways, distribution centres, manufacturing zones and population centres.

Its proximity to extensive ground transportation networks allows businesses to move goods efficiently while offering travellers convenient access to Southern California destinations.

The airport has increasingly become an important alternative for companies seeking reliable cargo operations away from heavily congested aviation hubs.

The combination of passenger expansion and cargo growth demonstrates ONT’s ability to serve both tourism demand and international trade requirements.

Rising Passenger Numbers Highlight Changing Southern California Travel Patterns

The record first-half performance shows how aviation demand in Southern California continues to evolve. Travellers are increasingly looking for airports that provide shorter processing times, easier access and improved convenience.

Ontario International Airport has benefited from this changing travel behaviour by expanding services, improving passenger experiences and attracting growing interest from airlines and logistics companies.

The increase in international passengers is particularly significant because it indicates stronger global recognition of ONT as a gateway for overseas visitors and regional travellers.

As international travel continues recovering and expanding, airports offering efficient operations and strong connectivity are expected to play a larger role in global tourism networks.

Ontario International Airport’s 2026 Growth Signals Strong Future Expansion

The first-half results position Ontario International Airport for continued growth throughout 2026 and beyond. Passenger numbers, international demand and cargo performance all point toward increasing importance within the Southern California aviation landscape.

With more than 3.4 million passengers and 428,217 tons of cargo handled in the first six months, ONT has demonstrated strong momentum across both commercial aviation and logistics operations.

The airport’s record performance under local management reflects years of investment, strategic planning and growing market demand.

As airlines expand networks and global supply chains continue to rely on efficient cargo gateways, Ontario International Airport is strengthening its role as a major transportation hub connecting Southern California with national and international markets.