Ontario International Airport (ONT) welcomed more than 5.2 million passengers in the first nine months of the year.
Ontario officials reported 5,278,316 passengers from January through September, 0.8% more than the same period last year.
The number of domestic passengers was 4,885,308, a decrease of 0.3%, while international travel volume rose by 17% to 393,008.
The Southern California gateway recorded 599,086 passengers for September, a decrease of 1.1% from a year earlier and ending the airport’s impressive run of 54 consecutive months of passenger gains.
The total included 554,651 domestic passengers, a decrease of 3.6%, and 44,435 international travelers, an increase of 45.7%.
Despite last month’s modest decline, ONT passenger volume remains 28% above pre-pandemic levels, the highest percentage among the 10 largest airports in California.
|
Passenger Totals |
Sept 2025 |
Sept 2024 |
Change |
YTD 2025 |
YTD 2024 |
Change |
|
Domestic |
554,651 |
575,513 |
-3.6 % |
4,885,308 |
4,901,447 |
-0.3 % |
|
International |
44,435 |
30,502 |
45.7 % |
393,008 |
335,769 |
17.0 % |
|
Total |
599,086 |
606,015 |
-1.1 % |
5,278,316 |
5,237,216 |
0.8 % |
The top five air carriers based on passenger volume share in September were:
- Southwest Airlines (37.4%)
- American Airlines (14.4%)
- United Airlines (10.6%)
- Delta Air Lines (9.8%)
- Frontier Airlines (9.6%)
Atif Elkadi, Chief Executive Officer of the Ontario International Airport Authority said: “Fifty-four months of consecutive growth is something few airports can claim, and it reflects the spirit of the Inland Empire.
“A streak may pause, but our purpose never does. ONT has always risen to the challenge, and this is simply the beginning of our next bold chapter of more records to break.”

