Delta Air LinesDL
Flights DL1780 15:02 daily
live
Direct flights from San Juan (SJU) to Boston (BOS): 20 nonstop departures observed each week across 2 airlines. 33% of the last 12 tracked flights arrived within 15 minutes of schedule. The median arrival is 12 minutes early. 7 of the 15 tracked flights were cancelled. The nonstop covers 2,702 km, an estimated 3 hours 58 minutes in the air. Measured by Pro Flight Search from live flight boards at San Juan and Boston. Updated 15 November 2026 at 16:08 UTC.
Today, SJU → BOS
Sun 15 Nov · local times- 07:00 B6562JetBlue Cancelled ·
- · B68400JetBlue On schedule BOS est. 14:51 +28sched 14:23
- · DL1780Delta On schedule BOS est. 18:43 +32sched 18:11
Checked SJU board 10:33 · BOS board 11:08
SJU
San Juan
smooth · +12
BOS
Boston
smooth · +0
2,702 km · ~3h 58m est.
Runs rough · 2 airlines · 20x weekly · nonstop
33% on time
of the last 12 tracked SJU → BOS flights arrived within 15 minutes
Median arrival delay is −12 min. 7 of 15 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−12 minacross the last 5 arrivals
Flight time~3h 58mestimated from route distance
Weekly departures20x2 direct airlines on the leg
Cancelled46.7%recent route rate · 7 of 15
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Delta Air LinesJetBlue Airways
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes11-12LXJ662departed+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 boardsWeather lens
Conditions are tightest at SJU: a 49% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +28 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
How the San Juan to Boston route actually runs
Pro Flight Search records official board updates for nonstop SJU to BOS 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 Boston (BOS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SJU-BOS
SJU to BOS questions
Is SJU–BOS running on time right now?
Smooth skies ahead. The departure side at SJU is the weaker end, route health score 92/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on SJU–BOS?
Operators schedule morning departures around 07:00 and evening departures around 20:39 from SJU. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BOS delay card to confirm conditions when you'd arrive.
How long is the flight from SJU to BOS?
Great-circle distance is 2,702 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 221–262 min gate-to-gate on this route.
How often does SJU–BOS fly?
2 carriers operate this route, around 20 flights a week between them. Compare carrier days and times in the airline list above.
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