What are CSA Air's main hubs?

CSA Air operates most from Milwaukee (MKE), MSN, IMT.

How large is CSA Air's fleet?

Fleet details for CSA Air are being gathered.

How many destinations does CSA Air fly to?

CSA Air serves 23 direct destinations based on recent route data.

AIRLINE · UNITED STATES

CSA Air

IATA ICAO IROHQ MKE

Aircraft

Aircraft types

Destinations

Hubs & gateways

CSA Air (/IRO) is a carrier based in United States. Its tracked network spans 23 destinations from 23 hubs, led by Milwaukee (MKE).

Live flights on FlightRadar24 ↗View seat maps

ROUTE NETWORK23 hubs

Milwaukee · Primary hub

HUBS & TOP AIRPORTS

Operates from 23 airports

Sortable by destinations served or daily frequency. Click any column to re-rank.

TOP HUB · 01MKE

Milwaukee

Milwaukee Mitchell International Airport

destinations

3–4

flights/day

See routes from MKE →

TOP HUB · 02MSN

MSN

destinations

3–4

flights/day

See routes from MSN →

TOP HUB · 03IMT

IMT

destinations

2–3

flights/day

See routes from IMT →

Hubs and top airports for CSA Air, fleet and route data as of April 2026
#	AIRPORT	CITY	REGION	DESTINATIONS ↓	FLIGHTS / DAY
1	MKEMilwaukee Mitchell International Airport	Milwaukee	North America	4	3–4
2	MSNMSN		Other	4	3–4
3	IMTIMT		Other	4	2–3
4	GRRGerald R. Ford International Airport	Grand Rapids	North America	3	3
5	FSDFSD		Other	3	2–3
6	CMXCMX		Other	3	1–2
7	PWMPortland International Jetport	Portland	North America	3	1–2
8	PQIPQI		Other	2	2
9	BGRBGR		Other	2	1–2
10	RHIRHI		Other	2	1–2

ROUTES & DESTINATIONS

Flies to 23 cities

Pick an origin hub to see its place in the network.

MKE Milwaukee

View airport ↗

destinations

3–4

flights/day

North

region

TOP ROUTES FROM MKE

IMTIron Mountain Kingsford1–2/day MQTMarquette1/day ESCEscanaba1/day CWAMosinee1/day

ROUTES FROM MKE

DESTINATIONS

Every 23 direct destinations

Sortable by daily frequency or hubs served. Each city links to its airport.

⌕

23 / 23

Direct destinations from CSA Air, route data as of April 2026
#	DESTINATION	COUNTRY	HUBS	FLIGHTS / DAY ↓
1	MKEMilwaukee	US	4	4–5
2	GRRGrand Rapids	US	3	3–4
3	MSNMadison	US	5	3–4
4	PWMPortland	US	2	2–3
5	FSDSioux Falls	US	3	2–3
6	IMTIron Mountain Kingsford	US	4	2–3
7	BGRBangor	US	2	2
8	FNTFlint	US	1	1–2
9	CMXHancock	US	3	1–2
10	RHIRhinelander	US	1	1–2
11	CWAMosinee	US	3	1–2
12	ESCEscanaba	US	2	1–2
13	PLNPellston	US	2	1–2
14	PQIPresque Isle	US	2	1–2
15	MQTMarquette	US	1	1
16	ABRAberdeen	US	1	1
17	APNAlpena	US	1	1
18	CIUSault Ste Marie	US	1	1
19	PIRPierre	US	1	1
20	TVCTraverse City	US	1	1
21	INDIndianapolis	US	1	1
22	SBNSouth Bend	US	1	1
23	HGRHagerstown	US	1	1

CSA Air

Operates from 23 airports

Flies to 23 cities

Every 23 direct destinations

Other airlines based in United States

Aircraft operated