Allegiant AirG4
Flights G44972 00:30 Su
live
Direct flights from Chicago (MDW) to Sioux Falls (FSD): 1 nonstop departure observed each week across 1 airline. The median arrival is 90 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 761 km, an estimated 1 hour 29 minutes in the air. Measured by Pro Flight Search from live flight boards at Chicago and Sioux Falls. Updated 8 September 2026 at 04:40 UTC.
MDW
Chicago
smooth · +0
FSD
Sioux Falls
heavy · +40
761 km · ~1h 29m est.
Running clean · 1 airline · 1x weekly · nonstop
73 / 100
route health from live MDW and FSD delay boards
Median arrival delay is +90 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+90 minacross the last 1 operated legs
Flight time~1h 29mestimated from route distance
Weekly departures1x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Allegiant Air
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at FSD: 47% odds of a 15+ minute delay and around +11 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Chicago to Sioux Falls route actually runs
Pro Flight Search records official board updates for nonstop MDW to FSD flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Chicago (MDW) to Sioux Falls (FSD) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/MDW-FSD
MDW to FSD questions
Is MDW–FSD running on time right now?
Mostly on schedule. The arrival side at FSD is the weaker end, route health score 73/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from MDW to FSD?
Great-circle distance is 761 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 84–95 min gate-to-gate on this route.
How often does MDW–FSD fly?
Allegiant Air runs the route with about 1 flight a week (sun). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at MDW and arrival-side delay at FSD, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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