Airports / Illinois / SQI
Whiteside County Airport - Joseph H Bittorf Field
KSQI / SQIRock Falls, IllinoisELEV 648 FT
Google rating
Google reviews
Field elevation
Nearest alternate
Field standing
#2 / 42
Illinois airports by Google rating
5.0★ across 4 Google ratings — ranked against 42 rated IL fields.
37 nm
To the nearest alternate
Chicago Rockford International Airport (RFD) — 2 fields within 50 nm.
Overview
Located in Rock Falls, Illinois, Whiteside County Airport - Joseph H Bittorf Field (KSQI / SQI) operates as a general aviation field. The airport sits 648 feet above sea level. With no scheduled airline service, it caters to private, charter, and general aviation traffic.
No charter operator is headquartered on the field, but operators routinely position aircraft into SQI for departures. When weather or ramp space demands it, nearby options are Chicago Rockford International Airport (RFD, 37 nm), Quad City International Airport (MLI, 41 nm), and Dubuque Regional Airport (DBQ, 61 nm).
Charter pricing from SQI depends on aircraft category, positioning distance, and trip timing. In directories and search listings it also appears under Sauk Valley Aviation. Compare rated operators or run a route through the cost estimator to gauge pricing from Rock Falls.
Field capability
ICAO
KSQI
IATA
SQI
FAA / Local
SQI
Elevation
648 ft
Coordinates
41.7422° N · 89.6736° W
Airspace
G · GolfClass G — GolfUncontrolled field — no tower. Pilots self-announce and sequence themselves on the common traffic advisory frequency.Source: FAA NASR class airspace
Size
Small
Scheduled svc
No
Elevation vs IL fields
state range 321–871 ft
At 648 ft, SQI sits higher than 55% of the 42 Illinois fields on the register.
Access & alternates
Closest alternate fields by great-circle distance — every listing links to its own field brief.
- 37nmRFDChicago Rockford International AirportChicago/Rockford
- 41nmMLIQuad City International AirportMoline
- 61nmDBQDubuque Regional AirportDubuque
- 65nmDPADupage AirportChicago/West Chicago
- 65nmPIAGeneral Wayne A. Downing Peoria International AirportPeoria
- 80nmORDChicago O'Hare International AirportChicago
Location
Open the full mapKSQI · Whiteside County Airport - Joseph H Bittorf Field · Rock Falls, IL
From the ramp
Google Places photography of Whiteside County Airport - Joseph H Bittorf Field — tap any frame to view full-screen, then cycle with the arrows or your keyboard.