LH423Lufthansa · BOS → FRA
live · 4m ago
Route confirmed Lufthansa

LH423 BostonBOS · 17:45 Frankfurt am MainFRA · 06:50

LH423 by Lufthansa flies from Boston (BOS) to Frankfurt am Main (FRA) for the Fri, Oct 23 departure.

Right nowEn route to Frankfurt am Main · off blocks 18:08 · 23 min late
06:48

estimated arrival at FRA · local time · ~2h 05m from now

En routeLH423 · position estimated
BOSBostonFRAFrankfurt am Main
Estimated from the boardsarr 06:48

Board estimate · gate and arrival times. Off blocks 18:08 · typical taxi-out at BOS ≈ 9.4 min. No receiver coverage over open ocean.

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
FRAFrankfurt am MainHigh riskFRA delay board →
BOS→FRAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
3.2%Chance of cancellation
+9 minAvg hub delay right now

Conditions at BOS and FRA are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Boston to Frankfurt am Main flights today

same route · Lufthansa
LH421departs 22:00

If LH423 is cancelled, this is the other Lufthansa nonstop flight from Boston to Frankfurt am Main on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How LH423 actually runs

Pro Flight Search has tracked every published board update for LH423 across the BOS and FRA boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: departed +23 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how LH423 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-23CANCELLED

Board clocks recorded as BOS and FRA published them.

Planning around LH423? 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 — LH423 Boston to Frankfurt am Main on-time performance, measured from the BOS and FRA airport boards.

Canonical URL
https://proflightsearch.com/flight/LH423
How we measure this →