About UPS Airlines
UPS Airlines is a cargo United States airline headquartered in Louisville, KY. The carrier operates under the IATA designator 5X and the ICAO designator UPS; air-traffic controllers address its flight crews on the radio with the callsign "UPS". The airline was founded in 1988 and currently operates a fleet of approximately 295 aircraft.
Within the US air-travel ecosystem, UPS Airlines sits in the "Cargo" segment. Cargo carriers move freight, parcels, and mail rather than passengers. Their schedules are built around overnight sort facilities and integrator deadlines rather than business-day passenger demand.
Codes & identifiers
| Legal / brand name | UPS Airlines |
|---|---|
| IATA code | 5X |
| ICAO code | UPS |
| Radio callsign | UPS |
| Category | Cargo |
| Headquarters | Louisville, KY |
| Year founded | 1988 |
| Fleet size | 295 aircraft |
| Official website | www.ups.com |
Hub & focus airports
The airports below are listed as hubs or focus cities for UPS Airlines. From these airports the carrier operates the densest schedule of nonstop departures, holds the most gate space, and typically supports the broadest range of international or long-haul service.
| Airport | City | State | IATA | Class |
|---|---|---|---|---|
| Louisville Muhammad Ali International Airport | Louisville | KY | SDF |
Large hub |
| Ontario International Airport | Ontario | CA | ONT |
Large hub |
| Philadelphia International Airport | Philadelphia | PA | PHL |
Large hub |
| Miami International Airport | Miami | FL | MIA |
Large hub |
| Chicago Rockford International Airport | Chicago/Rockford | IL | RFD |
Medium hub |
Booking & service notes
Schedules, fares, and aircraft assignments for UPS Airlines change frequently, sometimes weekly. The data on this page is intended as a stable reference for codes, headquarters, fleet scale, and hub list; for live availability, fare class rules, baggage policies, and seat selection, always consult the carrier's own booking system at www.ups.com. When a flight is operated under UPS Airlines's code but flown by a regional partner, the operating carrier is normally disclosed on the booking page; this distinction matters for elite-status benefits and, in rare cases, for irregular-operations rebooking.