BOS → SDFBoston to Louisville

live

Direct flights from Boston (BOS) to Louisville (SDF): 14 nonstop departures observed each week across 2 airlines. 80% of the last 5 operated flights arrived within 15 minutes of schedule. The median arrival is 35 minutes early. No cancellations were recorded across the 5 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 22 October 2026 at 18:33 UTC.

Today, BOS → SDF

Thu 22 Oct · local times
  1. 09:45 DL5615Delta Air Lines Left 09:40 SDF est. 12:05In the air · sched 12:27
  2. 14:57 AA3961American On scheduleGate B15 · TB ·

Checked BOS board 14:33 · SDF board 10:03

BOS Boston smooth · +0
SDF Louisville smooth · +0
1,332 km · ~2h 12m est.
dep bank 09:45–14:5714x weekly
Runs reliable · 2 airlines · 14x weekly · nonstop
80% on time

of the last 5 operated BOS → SDF flights arrived within 15 minutes

Median arrival delay is −35 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−35 minacross the last 5 operated legs
Flight time~2h 12mestimated from route distance
Weekly departures14x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
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 days
American AirlinesAA

Flights AA3585 11:18 Sa · AA3961 14:57 Mo Tu We Th Fr Su

Delta Air LinesDL

Flights DL5615 09:45 daily

History

operated legs · board outcomes
10-22DL5615dep −5 → arr−22
10-21AA3961dep +57 → arr+33
10-21DL5615dep −5 → arr−35
10-20AA3961dep −6 → arr−38
10-20DL5615dep −5 → arr−36

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
BOSBoston +0 min smooth 🌤 mostly cloudy · N 15 kt Full BOS delay board →
SDFLouisville +0 min smooth 🌤 clear · N 0 kt Full SDF delay board →

Weather lens

Current conditions put the pressure at BOS and SDF: 44% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

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
https://proflightsearch.com/search-flights/BOS-SDF
How we measure this →

BOS to SDF questions

Is BOS–SDF 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.

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 14 flights a week between them. Compare carrier days and times in the airline list above.