BOS → FRABoston to Frankfurt am Main

live

Direct flights from Boston (BOS) to Frankfurt am Main (FRA): 7 nonstop departures observed each week across 1 airline. The median arrival is 51 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 5,889 km, an estimated 8 hours 3 minutes in the air. Measured by Pro Flight Search from live flight boards at Boston and Frankfurt am Main. Updated 20 October 2026 at 03:06 UTC.

Today, BOS → FRA

Mon 19 Oct · local times
  1. 17:45 LH423Lufthansa Est. 18:00Departure not confirmed by the board FRA est. 07:11 +21sched 06:50

Checked BOS board 23:08 · FRA board 05:06

BOS Boston busy · +21
FRA Frankfurt am Main busy · +18
5,889 km · ~8h 03m est.
dep bank 17:45–22:007x weekly
Running clean · 1 airline · 7x weekly · nonstop
74 / 100

route health from live BOS and FRA delay boards

Median arrival delay is +51 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+51 minacross the last 1 operated legs
Flight time~8h 03mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Lufthansa

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
LufthansaLH

Flights LH423 17:45 daily · LH421 22:00 daily

History

operated legs · board outcomes
10-18LH423arrived+51

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 +21 min busy 🌤 few clouds · N 6 kt Full BOS delay board →
FRAFrankfurt am Main +18 min busy 🌤 clear · NNE 9 kt Full FRA delay board →

Weather lens

Current conditions put the pressure at BOS: 40% 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 Frankfurt am Main route actually runs

Pro Flight Search records official board updates for nonstop BOS to FRA 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 Frankfurt am Main (FRA) route reliability, measured from operated flights on official airport boards.

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

BOS to FRA questions

Is BOS–FRA running on time right now?

Mostly on schedule. The departure side at BOS is the weaker end, route health score 74/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on BOS–FRA?

Operators schedule evening departures around 17:45 from BOS. Earlier flights typically land before destination-airport delays accumulate later in the day; check the FRA delay card to confirm conditions when you'd arrive.

How long is the flight from BOS to FRA?

Great-circle distance is 5,889 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 446–535 min gate-to-gate on this route.

How often does BOS–FRA fly?

Lufthansa runs the route with about 14 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.