SAN to MKE flight delays & on-time performance
Nonstop flights from San Diego International Airport to General Mitchell 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 San Diego (SAN) to Milwaukee (MKE) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 6% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 12pm did best (89% on time); around 4pm did worst (57%).
- Sunday was the most reliable day to fly (81% on time) and Friday the least (70%).
- The largest source of delay minutes was late-arriving aircraft (57%).
Which airline is most on time from SAN to MKE?
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% | 0.0% | 15 min | 5.7% | 193 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am63%30 flights
- 11am85%13 flights
- 12pm89%35 flights
- 1pm62%42 flights
- 4pm57%24 flights
- 5pm78%23 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday72%0.0% cancelled
- Tuesday73%0.0% cancelled
- Wednesday78%0.0% cancelled
- Thursday71%0.0% cancelled
- Friday70%0.0% cancelled
- Saturday72%0.0% cancelled
- Sunday81%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 aircraft57%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion12%
- Security0%
- Extreme weather0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SAN to MKE: common questions
- How often are SAN to MKE 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 San Diego to Milwaukee cancelled?
- 0.0% of scheduled flights were cancelled (0 of 193).
- 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 50 min behind schedule on average, and 5.7% of flights were an hour or more late.
- How long is taxi time at SAN?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MKE to SAN — 72% on time
More flights from San Diego
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAN → MKE, nonstop flights by US airlines that report to the DOT. How we calculate this.