MKE to SAN flight delays & on-time performance
Nonstop flights from General Mitchell International Airport to San Diego International Airport · 1,739 miles · Aug 2025 – Jul 2026
- SAN: Airport closed. Closed, expected to reopen Oct 11 at 13:00 UTC.
Key facts
- Flights from Milwaukee (MKE) to San Diego (SAN) arrived on time 72% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 4% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 12pm did best (77% on time); around 1pm did worst (50%).
- Tuesday was the most reliable day to fly (82% on time) and Monday the least (66%).
- The largest source of delay minutes was late-arriving aircraft (36%).
Which airline is most on time from MKE to SAN?
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 | 72% | 0.0% | 13 min | 4.2% | 193 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 11am69%17 flights
- 12pm77%22 flights
- 1pm50%18 flights
- 2pm74%100 flights
- 3pm76%29 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday66%0.0% cancelled
- Tuesday82%0.0% cancelled
- Wednesday67%0.0% cancelled
- Thursday69%0.0% cancelled
- Friday73%0.0% cancelled
- Saturday77%0.0% cancelled
- Sunday74%0.0% 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 aircraft36%
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)30%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
MKE to SAN: common questions
- How often are MKE to SAN flights on time?
- 72% 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 Milwaukee to San Diego cancelled?
- 0.0% of scheduled flights were cancelled (0 of 193).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 43 min behind schedule on average, and 4.2% of flights were an hour or more late.
- How long is taxi time at MKE?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAN to MKE — 73% on time
More flights from Milwaukee
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MKE → SAN, nonstop flights by US airlines that report to the DOT. How we calculate this.