Ontario International Airport Passenger Volumes Rose for 4th Straight Month in March While Freight Shipments Grew by 15%

Why It Matters

Sustained passenger and freight growth positions ONT as a rising hub in Southern California, attracting airlines and boosting regional economic activity. The trends signal strong demand recovery and underline the airport’s expanding role in both travel and supply‑chain logistics.

Key Takeaways

• March passengers hit 574,819, up 2.7% YoY
• International travelers rose 55.2% in March, 58.4% YTD
• Air freight tonnage grew 15.3% in March, 12.7% YTD
• Southwest led with 37.5% of March passenger share
• Cargo mail volumes fell 7.5% in March, 8.6% YTD

Pulse Analysis

Ontario International Airport’s passenger rebound reflects a broader resurgence in Southern California travel. After a pandemic‑induced slump, the airport logged 574,819 boardings in March, marking a 2.7% increase over the same month last year and the fourth straight month of growth. Southwest Airlines, the airport’s top carrier, captured more than a third of all seats, while legacy carriers such as American and Alaska also posted solid shares. This momentum helped push first‑quarter passenger totals past 1.5 million, a 4.1% rise that underscores renewed confidence among airlines and travelers in ONT’s operational reliability and service quality.

The most striking element of the traffic surge is the explosion in international travel. March saw a 55.2% jump in overseas passengers, and the first‑quarter figure climbed 58.4% to 181,854. This surge is driven by a mix of leisure tourism returning to Southern California’s attractions and renewed business travel as companies re‑engage with the Pacific Rim market. The influx of international visitors not only diversifies ONT’s revenue base but also fuels ancillary sectors such as hospitality, retail, and ground transportation, amplifying the airport’s economic footprint.

Freight activity at ONT is equally compelling, with air cargo tonnage rising 15.3% in March and 12.7% year‑to‑date, surpassing 208,000 tons. The growth is propelled by heightened demand for time‑critical shipments and the airport’s strategic location near major logistics corridors. While mail volumes slipped, the robust freight numbers signal that ONT is becoming a pivotal node in the regional supply chain, attracting carriers seeking efficient west‑coast connections. Continued fuel cost pressures remain a risk, but the airport’s proactive partnership with airlines aims to safeguard schedules and service levels, ensuring that freight growth translates into lasting economic benefits for the Inland Empire.