| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 02 | BOS | FRA | 22:14 | 10:45 |
Landed
|
Track > |
| Sep 01 | BOS | FRA | 22:24 | 10:53 |
Landed
|
Track > |
| Aug 31 | BOS | FRA | 22:05 | 10:34 |
Landed
|
Track > |
| Aug 30 | BOS | FRA | 22:21 | 10:49 |
Landed
|
Track > |
| Aug 29 | BOS | FRA | 23:04 | 11:31 |
Landed Late
|
Track > |
| Aug 28 | BOS | FRA | 22:47 | 11:24 |
Landed
|
Track > |
| Aug 27 | BOS | FRA | 22:11 | 10:58 |
Landed
|
Track > |
| Aug 26 | BOS | FRA | 22:22 | 11:02 |
Landed
|
Track > |
| Aug 25 | BOS | FRA | 22:10 | 10:49 |
Landed
|
Track > |
| Aug 24 | BOS | FRA | 22:06 | 10:51 |
Landed
|
Track > |
Lufthansa Flight LH421 connects Boston, United States to Frankfurt, Germany, taking off from Boston Logan International Airport BOS and landing at Frankfurt Airport FRA.
How long is the LH421 flight from Boston to Frankfurt?
The average flight time from Boston to Frankfurt is 6 hours and 35 minutes. The flight distance is 5888 km / 3658 miles and the average flight speed is 894 km/h / 556 mph.
How many LH421 flights are operated per week?
7 flights per week. The flight LH421 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of Lufthansa Flight LH421 Boston to Frankfurt?
The Airportia On-Time Performance Rating for Lufthansa Flight LH421 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight LH421 arriving at?
Flight LH421 arrives at Frankfurt Airport (FRA) Terminal 1.
When was the latest LH421 flight?
The latest flight took off on Thursday, September 3rd, 2026 with the flight status being Landed on 10:45.
How else can the flight LH421 be referenced as?
This Lufthansa flight can also be referenced as DLH421, LH0421, LH 421, DLH 421.
How often is flight LH421 delayed?
On average, 20% of all LH421 flights are delayed. The average delay is 12 minutes.
Can I get compensation for my delayed or cancelled LH421 flight or baggage issues?
If your LH421 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our LH421 Flight Tracker above for more details.
Flight LH421 is code-shared by 4 airlines using the flight numbers UA8858, AC9094, SN7237, TG7745
Other flights departing from Boston BOS: B61785, QR744
Other flights arriving at Frankfurt FRA: CA1021, LH447, UA46, LH405
All flights connecting Boston BOS to Frankfurt FRA.
