SJC to MDW flight delays & on-time performance
Nonstop flights from Mineta San Jose International Airport to Chicago Midway International Airport · 1,838 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJC or MDW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Jose (SJC) to Chicago (MDW) arrived on time 84% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.2% were cancelled, and 1% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 10pm did best (94% on time); around 11am did worst (64%).
- Saturday was the most reliable day to fly (95% on time) and Monday the least (76%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (49%).
Which airline is most on time from SJC 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 | 84% | 0.2% | 6 min | 1.0% | 519 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am94%78 flights
- 7am90%20 flights
- 8am91%58 flights
- 10am78%89 flights
- 11am64%109 flights
- 10pm94%149 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%0.0% cancelled
- Tuesday79%0.0% cancelled
- Wednesday85%0.0% cancelled
- Thursday86%0.0% cancelled
- Friday88%0.0% cancelled
- Saturday95%0.0% cancelled
- Sunday82%1.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)49%
- Late-arriving aircraft36%
- Air traffic control & airport congestion14%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
SJC to MDW: common questions
- How often are SJC to MDW flights on time?
- 84% 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 San Jose to Chicago cancelled?
- 0.2% of scheduled flights were cancelled (1 of 519).
- How long are typical delays?
- Across all flights the average arrival delay was 6 min (early arrivals count as zero). Flights that were late arrived 32 min behind schedule on average, and 1.0% of flights were an hour or more late.
- How long is taxi time at SJC?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MDW to SJC — 69% on time
More flights from San Jose
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJC → MDW, nonstop flights by US airlines that report to the DOT. How we calculate this.