The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Greenville Spartanburg International ⇄ Gary/Chicago International GSP–GYY

Airlines flew 2 flights between Greenville Spartanburg International GSP in Greer, SC and Gary/Chicago International GYY in Gary/Chicago, IN in the twelve months to July 2026, both directions together: 224 passengers in 360 seats, 62% of them filled. 543 miles, about 78 minutes in the air, on 1 airline: Allegiant Air (2). Planning to fly it yourself? The weather and winds along this route right now.

2
flights, twelve months
GSP-GYY: 1 · GYY-GSP: 1
224
passengers
62% of seats filled
543
miles
about 78 minutes airborne
1
airline
1 aircraft type

Flights by month both directions

00011110/25111/25
By month, as a table
flights
10/251
11/251

Passengers by month

028568411211210/2511211/25
By month, as a table
passengers
10/25112
11/25112

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Allegiant Air G4222462%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Airbus Industrie A320-100/2002180224

GSP → GYY this direction alone · flown November 2025 to November 2025

1 flights, 112 passengers in 180 seats. Allegiant Air 1.

GYY → GSP this direction alone · flown October 2025 to October 2025

1 flights, 112 passengers in 180 seats. Allegiant Air 1.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Greenville Spartanburg International GSP and Gary/Chicago International GYY; all routes.