American AirlinesAA100% on time
Flights AA3446 14:00 daily
live
Direct flights from Boston (BOS) to Louisville (SDF): 19 nonstop departures observed each week across 2 airlines. 85% of the last 13 tracked flights arrived within 15 minutes of schedule. The median arrival is 20 minutes early. No cancellations were recorded across the 15 tracked flights. The nonstop covers 1,332 km, an estimated 2 hours 12 minutes in the air. Measured by Pro Flight Search from live flight boards at Boston and Louisville. Updated 13 November 2026 at 18:03 UTC.
Today, BOS → SDF
Fri 13 Nov · local times- 09:55 DL5679Delta Air Lines Left 09:50 SDF est. 12:30 +27In the air · sched 12:03
- 14:00 AA3446American On scheduleGate B16 · TB ·
Checked BOS board 13:03 · SDF board 10:03
BOS
Boston
smooth · +12
SDF
Louisville
smooth · +0
1,332 km · ~2h 12m est.
Runs reliable · 2 airlines · 19x weekly · nonstop
85% on time
of the last 13 tracked BOS → SDF flights arrived within 15 minutes
Median arrival delay is −20 min. 0 of 15 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−20 minacross the last 13 arrivals
Flight time~2h 12mestimated from route distance
Weekly departures19x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 15
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
American AirlinesDelta Air Lines
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 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
Conditions are tightest at BOS and SDF: a 38% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +4 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 Boston to Louisville route actually runs
Pro Flight Search records official board updates for nonstop BOS to SDF 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: Boston (BOS) to Louisville (SDF) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/BOS-SDF
BOS to SDF questions
Is BOS–SDF running on time right now?
Smooth skies ahead. The departure side at BOS 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 BOS–SDF?
Operators schedule morning departures around 09:45 from BOS. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SDF delay card to confirm conditions when you'd arrive.
How long is the flight from BOS to SDF?
Great-circle distance is 1,332 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 124–144 min gate-to-gate on this route.
How often does BOS–SDF fly?
2 carriers operate this route, around 19 flights a week between them. Compare carrier days and times in the airline list above.
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