LGA to MDW flight delays & on-time performance
Nonstop flights from LaGuardia Airport to Chicago Midway International Airport · 725 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LGA or MDW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from New York (LGA) to Chicago (MDW) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.9% were cancelled, and 9% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 6am did best (93% on time); around 9pm did worst (56%).
- Wednesday was the most reliable day to fly (76% on time) and Sunday the least (67%).
- The largest source of delay minutes was late-arriving aircraft (49%).
Which airline is most on time from LGA to MDW?
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% | 4.9% | 19 min | 9.4% | 2,385 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am93%293 flights
- 7am73%157 flights
- 8am85%28 flights
- 9am82%211 flights
- 10am81%109 flights
- 11am75%234 flights
- 12pm71%28 flights
- 1pm69%117 flights
- 2pm79%223 flights
- 3pm67%172 flights
- 4pm64%149 flights
- 5pm62%214 flights
- 6pm57%110 flights
- 9pm56%303 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%9.1% cancelled
- Tuesday76%4.7% cancelled
- Wednesday76%3.6% cancelled
- Thursday71%3.9% cancelled
- Friday74%2.5% cancelled
- Saturday75%3.8% cancelled
- Sunday67%6.2% 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 aircraft49%
- Air traffic control & airport congestion22%
- Airline (crew, maintenance, cleaning, fueling)22%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather52%
- Air traffic control & airport congestion30%
- Airline (crew, maintenance, cleaning, fueling)18%
- Security0%
LGA to MDW: common questions
- How often are LGA to MDW 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 New York to Chicago cancelled?
- 4.9% of scheduled flights were cancelled (116 of 2,385).
- How long are typical delays?
- Across all flights the average arrival delay was 19 min (early arrivals count as zero). Flights that were late arrived 66 min behind schedule on average, and 9.4% of flights were an hour or more late.
- How long is taxi time at LGA?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MDW to LGA — 69% on time
More flights from New York
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LGA → MDW, nonstop flights by US airlines that report to the DOT. How we calculate this.