✈️ AirportRoutes is in beta — some live flight-tracking features (FlightAware API) are temporarily paused. Route, airport & airline data is fully available.
🇺🇸 MDW
Chicago
238 mi
ALN 🇺🇸
Alton/St Louis

Chicago to Alton/St Louis Flights

Chicago Midway International Airport St Louis Regional Airport 2 airlines

Get Notified About Route Changes

Track up to 3 airports free. Weekly alerts when airlines add or remove routes.

Sign Up Free

The Chicago to Alton/St Louis route connects Chicago Midway International Airport (MDW) in US with St Louis Regional Airport (ALN) in US. This short-haul flight covers approximately 238 miles (383 km) with a typical flight time of 37m. This route is served by 2 airlines: NetJets Aviation, COL. AirportRoutes has tracked 1 unique flight number on this route.

Search tickets for this route

Compare flight prices across hundreds of booking sites

Search MDW → ALN flights

Opens a live price search — just pick your dates

Departure Airport

Chicago Midway International Airport

ICAO Code:
KMDW
IATA Code:
MDW
City:
🇺🇸 Chicago
Country:
US
Elevation:
620 ft

Destination Airport

St Louis Regional Airport

ICAO Code:
KALN
IATA Code:
ALN
City:
🇺🇸 Alton/St Louis
Country:
US
Elevation:
544 ft

2

Operators

1

Tracked Flight

238

Miles

37m

Flight Duration

Route Map

Operating Airlines

Airline ICAO IATA
NetJets Aviation EJA 1I
SC Aviation Inc. COL -

Flight Schedule Pattern

Day Flights Observed Frequency Activity
Monday 1 33%
Tuesday 0 0%
Wednesday 0 0%
Thursday 0 0%
Friday 1 33%
Saturday 0 0%
Sunday 1 33%

Pattern Analysis

1 Tracked Flight:
Data Points: 3
API observations used to build this analysis
Weekdays: 2 flights
Weekend: 1 flights
Business Route More active on weekdays

All Flight Routes

2 Routes
Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.
Airline Flight Numbers Aircraft Type Typical Time Days Active Last Seen Status
H25B 12:25 12:25 PM (Representative)
M T W T F S S
Oct 5, 2026 Active
- C68A -
M T W T F S S
Oct 5, 2026 Active
Total Routes: 2
Active Routes: 2
Unique Airlines: 2
Aircraft Types: 2

Spotted Departure Times

Departure Time Operator ICAO IATA
12:25 12:25 PM SC Aviation Inc. COL -

Time Information

Times are shown in the departure airport's local timezone (KMDW - America/Chicago).

Total Departure Times: 1
Time Range:
12:25 - 12:25
These are typical departure times observed from actual flights. Times may vary by season and schedule changes.