LH420Lufthansa · FRA → BOS
live · 3m ago
Route confirmed Lufthansa

LH420 Frankfurt am MainFRA · 17:40 BostonBOS · 20:10

LH420 by Lufthansa flies from Frankfurt am Main (FRA) to Boston (BOS) for the Mon, Sep 7 departure.

Right nowIn the air to Boston · off blocks 18:05 · 25 min late
20:36

estimated arrival at BOS · local time · ~6h 12m from now

LivePosition · updated 3m ago
BOS2,833 mi · ~6h 12m leftFRA
34,000 ftAltitudecruising
464 mphSpeed403 kt
291°Direction

Live position · flown path, last 1h 54m

Typical gate push+25 minmedian posted departure
Typical arrival+2 minmedian over 2 operations
Wins back in air~23 minmedian gate push vs arrival · how planes make up time →

The route today

live boards
FRAFrankfurt am MainModerate riskFRA delay board →
BOSBostonOn-time likelyBOS delay board →
FRA→BOSevery 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
2.6%Chance of cancellation
+8 minAvg hub delay right now

Conditions at FRA and BOS 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 Frankfurt am Main to Boston flights today

same route · Lufthansa
LH422departs 13:30

If LH420 is cancelled, this is the other Lufthansa nonstop flight from Frankfurt am Main to Boston on the same day, with scheduled departure times in FRA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How LH420 actually runs

Pro Flight Search has tracked every published board update for LH420 across the FRA and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left noticeably late (~25 min) but landed about 8 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how LH420 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
09-07FRA 17:40 18:05 (+25)BOS 20:10 20:12 (+2)
09-06FRA 17:40BOS 20:10 20:02 (−8)

Aircraft

Recent tails: DAIGS.

Board clocks recorded as FRA and BOS published them.

Planning around LH420? 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 — LH420 Frankfurt am Main to Boston on-time performance, measured from the FRA and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/LH420
How we measure this →