SJU → DTWSan Juan to Detroit

live

Direct flights from San Juan (SJU) to Detroit (DTW): 3 nonstop departures observed each week across 3 airlines. The median arrival is on schedule. No cancellations were recorded across the 3 tracked flights. The nonstop covers 3,110 km, an estimated 4 hours 29 minutes in the air. Measured by Pro Flight Search from live flight boards at San Juan and Detroit. Updated 13 September 2026 at 02:33 UTC.

SJU San Juan busy · +17
DTW Detroit smooth · +0
3,110 km · ~4h 29m est.
dep bank 14:30–19:433x weekly
Running clean · 3 airlines · 3x weekly · nonstop
89 / 100

route health from live SJU and DTW delay boards

Median arrival delay is +0 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+0 minacross the last 3 operated legs
Flight time~4h 29mestimated from route distance
Weekly departures3x3 direct airlines on the leg

Who flies it

observed on the boards · 7 days
Delta Air LinesDL

Flights DL1913 varies Sa

KLMKL

Flights KL6784 varies Sa

WestJetWS

Flights WS8756 varies Sa

History

operated legs · board outcomes
09-12DL1913dep +64 → arr+0
09-12KL6784arrived+0
09-12WS8756arrived+0

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SJUSan Juan +17 min busy 🌤 scattered clouds · ESE 7 kt Full SJU delay board →
DTWDetroit +0 min smooth 🌤 mostly cloudy · NW 8 kt Full DTW delay board →

Weather lens

Current conditions put the pressure at SJU: 37% odds of a 15+ minute delay and around +15 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the San Juan to Detroit route actually runs

Pro Flight Search records official board updates for nonstop SJU to DTW flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — San Juan (SJU) to Detroit (DTW) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SJU-DTW
How we measure this →

SJU to DTW questions

Is SJU–DTW running on time right now?

Smooth skies ahead. The departure side at SJU is the weaker end, route health score 89/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from SJU to DTW?

Great-circle distance is 3,110 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 250–297 min gate-to-gate on this route.

How often does SJU–DTW fly?

3 carriers operate this route, around 3 flights a week between them. Compare carrier days and times in the airline list above.

What does the route health score measure?

A blend of departure-side delay at SJU and arrival-side delay at DTW, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.