Lufthansa flight LH 423: Boston Logan - Frankfurt

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FLIGHT SCHEDULE
Direct Flights:
Daily 16:15 Boston Logan (BOS) E 05:25 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-300 (343) 7:10 Effective from 2025-11-02
The flight arrives 1 day after departure.
Daily 17:15 Boston Logan (BOS) E 05:25 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-300 (343) 7:10 Effective 2025-10-26 through 2025-11-01
The flight arrives 1 day after departure.
Daily 17:50 Boston Logan (BOS) E 06:55 Frankfurt (FRA) 1
LH 423 Non-stop Boeing 747-400 (744) 7:05 Valid until 2025-06-30
The flight arrives 1 day after departure.
Tue,Fri,Sun 17:50 Boston Logan (BOS) E 07:10 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-300 (343) 7:20 Effective 2025-07-01 through 2025-07-29
The flight arrives 1 day after departure.
Mon,Wed,Thu,Sat 17:50 Boston Logan (BOS) E 07:05 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-600 (346) 7:15 Effective 2025-07-02 through 2025-07-31
The flight arrives 1 day after departure.
Daily 17:50 Boston Logan (BOS) E 06:55 Frankfurt (FRA) 1
LH 423 Non-stop Boeing 747-400 (744) 7:05 Effective 2025-08-01 through 2025-08-31
The flight arrives 1 day after departure.
Mon,Wed,Thu,Sat 17:50 Boston Logan (BOS) E 07:05 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-600 (346) 7:15 Effective 2025-09-01 through 2025-10-23
The flight arrives 1 day after departure.
Tue,Fri,Sun 17:50 Boston Logan (BOS) E 07:10 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-300 (343) 7:20 Effective 2025-09-02 through 2025-10-24
The flight arrives 1 day after departure.
Sat 17:50 Boston Logan (BOS) E 06:05 Frankfurt (FRA) 1
LH 423 Non-stop Airbus A340-600 (346) 7:15 Operates only on 2025-10-25
The flight arrives 1 day after departure.
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Lufthansa flight LH 423:
Boston Logan - Frankfurt
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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Flights:
Lufthansa LH423
16:15
Boston Logan (BOS) E

05:25(+1)
Frankfurt (FRA) 1
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:10, non-stop
Airbus A340-300 (343)
The flight arrives 1 day after departure.
Lufthansa LH423
17:15
Boston Logan (BOS) E

05:25(+1)
Frankfurt (FRA) 1
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:10, non-stop
Airbus A340-300 (343)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

06:55(+1)
Frankfurt (FRA) 1
Valid until 2025-06-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:05, non-stop
Boeing 747-400 (744)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

07:10(+1)
Frankfurt (FRA) 1
Effective 2025-07-01 through 2025-07-29
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 7:20, non-stop
Airbus A340-300 (343)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

07:05(+1)
Frankfurt (FRA) 1
Effective 2025-07-02 through 2025-07-31
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Duration: 7:15, non-stop
Airbus A340-600 (346)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

06:55(+1)
Frankfurt (FRA) 1
Effective 2025-08-01 through 2025-08-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:05, non-stop
Boeing 747-400 (744)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

07:05(+1)
Frankfurt (FRA) 1
Effective 2025-09-01 through 2025-10-23
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Duration: 7:15, non-stop
Airbus A340-600 (346)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

07:10(+1)
Frankfurt (FRA) 1
Effective 2025-09-02 through 2025-10-24
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 7:20, non-stop
Airbus A340-300 (343)
The flight arrives 1 day after departure.
Lufthansa LH423
17:50
Boston Logan (BOS) E

06:05(+1)
Frankfurt (FRA) 1
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:15, non-stop
Airbus A340-600 (346)
The flight arrives 1 day after departure.
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  • LH 423 is an international flight departing from Boston Logan airport, United States (BOS) and arriving at Frankfurt airport, Germany (FRA).
  • The flight distance is 3657 miles, or 5885 km.
  • The timezone of the departure airport is UTC-5 (plus 1h DST), and the timezone of the arrival airport is UTC+1 (plus 1h DST). Current time at the point of departure is 6:55am, and 12:55pm at the point of arrival. There is a 6 hour time difference between the airports.
  • For direct flights, the flight time varies between 7:05 and 7:20.
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