Delta Air LinesDL
Flights DL1913 varies Sa
live
Direct flights from Detroit (DTW) to San Juan (SJU): 2 nonstop departures observed each week across 2 airlines. The median arrival is 4 minutes late. No cancellations were recorded across the 2 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 Detroit and San Juan. Updated 12 September 2026 at 19:33 UTC.
DTW
Detroit
smooth · +0
SJU
San Juan
smooth · +0
3,110 km · ~4h 29m est.
Running clean · 2 airlines · 2x weekly · nonstop
100 / 100
route health from live DTW and SJU delay boards
Median arrival delay is +4 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+4 minacross the last 2 operated legs
Flight time~4h 29mestimated from route distance
Weekly departures2x2 direct airlines on the leg
Who flies it
observed on the boards · 7 daysWestJetWS
Flights WS8698 varies Sa
History
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather 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 →
next sweep in 120s
How the Detroit to San Juan route actually runs
Pro Flight Search records official board updates for nonstop DTW to SJU 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 — Detroit (DTW) to San Juan (SJU) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/DTW-SJU
DTW to SJU questions
Is DTW–SJU running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from DTW to SJU?
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 DTW–SJU fly?
2 carriers operate this route, around 2 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 DTW and arrival-side delay at SJU, 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.
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