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Airlines / IRO

IRO (IRO)

IRO (IRO) flies to 12 destinations in 1 country. All domestic, no international service.

Independent carrier. Not part of any alliance, so miles only work within the IRO program. No shared lounge access with other airlines.

IRO has the most flights out of Milwaukee (MKE), Grand Rapids (GRR), Sioux Falls (FSD), Portland (PWM), Pellston (PLN).

MKE Routes → GRR Routes → FSD Routes → PWM Routes →
IRO Airports

IRO Busiest Airports

IRO doesn't operate a traditional hub-and-spoke network. These are the airports where IRO has the most flights. You fly direct between cities rather than connecting through a central hub.

MKE
Milwaukee
General Mitchell International Airport
4 GRR
Grand Rapids
Gerald R. Ford International Airport
2 FSD
Sioux Falls
Sioux Falls Regional Airport
2 PWM
Portland
Portland International Jetport
1 PLN
Pellston
Pellston Regional Airport of Emmet County Airport
1
MKE → GRR → FSD → PWM → PLN →
IRO Aircraft

IRO Fleet & Aircraft Types

1 aircraft type appear on IRO routes. Single-type fleet. Every route, same plane. Simple.

MKE Routes → GRR Routes → FSD Routes →
IRO Destinations

IRO: All 12 Destinations

Every nonstop route IRO flies. Each destination links to the full route page with schedules, competing airlines, and connection options.

Code City
ABR Aberdeen
ESC Escanaba
GRR Grand Rapids
MQT Gwinn
IND Indianapolis
CIU Kincheloe
IMT Kingsford
MKE Milwaukee
CWA Mosinee
PIR Pierre
PQI Presque Isle
FSD Sioux Falls
FAQ

IRO FAQ

IRO flies nonstop to 12 destinations in 1 country. 12 domestic, 0 international.

IRO doesn't operate a traditional hub-and-spoke network. The busiest airports are Milwaukee (MKE), Grand Rapids (GRR), Sioux Falls (FSD), and others. You fly direct between cities.

1 aircraft types appear on IRO routes, including C208.

No. IRO is an independent carrier. Miles only work within the IRO program, and there's no shared lounge access with other airlines.

No. IRO operates domestic routes only. For international destinations you would need to connect on another carrier.

MKE Routes → MKE Flights → All Airlines →