MDW to JAX flight delays & on-time performance
Nonstop flights from Chicago Midway International Airport to Jacksonville International Airport · 848 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MDW or JAX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (MDW) to Jacksonville (JAX) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1% were cancelled, and 8% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 3pm did best (94% on time); around 6pm did worst (55%).
- Tuesday was the most reliable day to fly (80% on time) and Sunday the least (62%).
- The largest source of delay minutes was late-arriving aircraft (56%).
Which airline is most on time from MDW to JAX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 73% | 1.0% | 15 min | 8.0% | 416 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am87%30 flights
- 10am91%44 flights
- 11am73%31 flights
- 12pm70%23 flights
- 1pm82%100 flights
- 3pm94%16 flights
- 5pm67%15 flights
- 6pm55%101 flights
- 7pm56%33 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%1.7% cancelled
- Tuesday80%0.0% cancelled
- Wednesday78%0.0% cancelled
- Thursday67%0.0% cancelled
- Friday72%1.6% cancelled
- Saturday79%1.9% cancelled
- Sunday62%1.6% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft56%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion10%
- Extreme weather4%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Air traffic control & airport congestion50%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
MDW to JAX: common questions
- How often are MDW to JAX flights on time?
- 73% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Jacksonville cancelled?
- 1.0% of scheduled flights were cancelled (4 of 416).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 51 min behind schedule on average, and 8.0% of flights were an hour or more late.
- How long is taxi time at MDW?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: JAX to MDW — 80% on time
More flights from Chicago
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MDW → JAX, nonstop flights by US airlines that report to the DOT. How we calculate this.