Lufthansa Flight LH423 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Lufthansa Flight 423 Route Deals From $633

The cheapest prices found with in the last 7 days for return flights were $807 and $633 for one-way flights to Frankfurt Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 5 - Tue, Aug 26
BOS
Logan Intl.
FRA
Frankfurt Intl.
$807 Roundtrip, found 1 day ago
$807
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Tue, Aug 5 from Logan Intl. to Frankfurt Intl., returning Tue, Aug 26, priced at $807 found 1 day ago

Frequently asked questions

What route does flight number LH423 take?
LH423 operates between BOS and FRA and is a direct flight. This service takes 7 hours and 10 minutes.
What terminal does LH423 fly out of?
Direct flights between BOS and FRA are served by flight number LH423, and travelers booked on this route typically leave from Terminal E.
What kind of plane is on flight number LH423?
The Airbus A330-300 is the aircraft that’s mostly used for flight number LH423. This flight typically leaves from BOS and comes in to land at FRA.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your LH423 flight with Travelocity, please visit our Customer Service Portal.