Details of Frontier Airlines Ontario Airport
| Airport Name | Ontario International Airport |
| Frontier Airlines Ontario Airport Address | Ontario, CA 91761, United States |
| Airport Code | ONT |
| Frontier Airlines Ontario Airport Contact Number | +1 909-544-5300 |
| Frontier Airlines ONT Terminal | Terminal 1,2,3 |
| Working Hours | 24 hours |
| Email Address | customer.service@flyfrontier.com |
| Official Website | https://www.flyfrontier.com/ |
| YouTube | www.youtube.com/@flyfrontiervideos |
| www.facebook.com/flyfrontier | |
| twitter.com/FlyFrontier | |
| Instagram Account | www.instagram.com/flyfrontier |
Services provided by Frontier Airlines at Ontario Airport
| Flight Ticket Booking and Cancellation | Ticket Rescheduling |
| Web / Online Check-in | Airport Counter Check-in |
| Kiosk Check-in | Airport and In-Flight Wifi |
| Unaccompanied Minor | Travel with Pets or Animals |
| Baggage Allowance | Duty-free Allowance |
| Flight Information | Airport Lounges |
| Visa-related Information | Pet Relief Area |
| Missing Luggage | Immigration Services |
| First Class and Business Class Seats Enquiries | Economy Class Seat Enquiries |
| Privilege Club | Delayed Flights |
| Transit Information | Privilege Club |
| Seats Selection and Enquiries | Concierge Services |
| Airport Facilities | In-Flight Entertainment |
List of worldwide Frontier airlines Terminal