Informational Guide to Boston Logan Airport (BOS) - NON OFFICIAL

LH421 Lufthansa - Flight Status

Below, you can find details about Lufthansa flight LH421, which currently operates between the airports of Boston - Boston Logan International Airport (Airport Code BOS) and Frankfurt - Frankfurt Airport (Airport Code FRA).
This flight data pertains specifically to the flight's details for Friday, June 12, 2026.

LH421 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

LH421 Lufthansa to Frankfurt

En Route - On-time
Delay: 4 minutes
Flight Status for Friday June 12, 2026
This flight is also scheduled for Today (June 13, 2026). See it here
This flight is also scheduled for Tomorrow (June 14, 2026). See it here

Airline information

Lufthansa
Lufthansa
Equipment: Airbus A340-300

Departure

Boston (BOS)
June 12, 2026
Boston Logan International Airport
Departed at:
10:09 pm
Terminal:
E
Gate:
E9
Scheduled Departure Time: 10:00 pm

Arrival

Frankfurt (FRA)
June 13, 2026
Frankfurt Airport
Estimated Arrival Time:
11:19 am
Terminal:
1
Gate:
Z19
Scheduled Arrival Time: 11:15 am
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.boston-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- AC9094 - Air Canada

- SN7237 - Brussels Airlines

- TG7745 - Thai Airways International

- UA8858 - United Airlines

Additional Information

Which is the frequency of flight LH421?
The flight LH421 is scheduled to flight on Wednesday, Thursday, Friday, Saturday on a weekly basis.

Which is the distance of flight LH421?
The distance between the two airports is 3661 miles.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Boston: 2026-06-13 03:16:51
Current Time in Frankfurt: 2026-06-13 09:16:51

Alternative Flights

The following airlines serves the same route between Boston and Frankfurt:

Condor
- Flight Number: DE2039. (On Time performance: 43 - Average Delay: 19 minutes)

Lufthansa
- Flight Number: LH423. (On Time performance: 64 - Average Delay: 18 minutes)

Punctuality and delays

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from June 02, 2025 to October 24, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Last Past Flights LH421

Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
13 June
10:09 pm
Boston (BOS)
11:19 am
Frankfurt (FRA)
07h 10min
Airbus A340-30
Airbus A340-30
- On-time
Friday
12 June
11:55 pm
Boston (BOS)
12:47 pm
Frankfurt (FRA)
06h 52min
Airbus A340-30
Airbus A340-30
Landed - Delayed
Thursday
11 June
10:12 pm
Boston (BOS)
11:14 am
Frankfurt (FRA)
07h 02min
Airbus A340-30
Airbus A340-30
Landed - On-time