Miles & More: What is a booking class?

I'm member of the frequent flyer program Miles & More. Now I wanted to request additional miles for a flight during summer 2011 when I wasn't yet a member. To fill out the online form, I have to enter the booking class. There are various possibilities, for example Economy B class, Economy C class, Economy D class, etc.
I don't know what this is. I flew economy class, but I didn't know that there are any subclasses. So how can I find the right booking class? The flight was from Zürich to Helsinki with blue1.
Best Answer
The Lufthansa Miles and More site includes a page to help you find your booking class on your ticket, boarding pass etc. This boarding pass is in Business (C class) - whatever it says on yours where the 2 is, that's your booking class:
This boarding pass stub is for Y, one of the Economy booking classes:
If you have your itinerary, e-ticket, confirmation email, or receipt, you may also find your booking class on there, though the web site isn't clear about where. Some airlines call it Fare Class. Some use a multi-letter code where the first one is your booking class and the other letters include more detail like a web-only fare.
If you don't have your boarding pass or your itinerary, try finding a flight for the same cost today between those two points, and see what booking class you end up in. Then say that was the class you flew in.
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What booking class means?
A Booking class is an indicator of traveling class presented in a traveler's fare code. A fare basis or fare code is an alphabetic letter or numbers (numeric codes) through which a fare type is identified by airlines.What are the booking classes on Lufthansa?
Eligible booking classes- First class. Booking class. A, F.
- Business class. Booking class. C, D, J, Z.
- Discount business. Booking class. P^
- Premium economy. Booking class. G, E, N*
- Full economy. Booking class. B, Y.
- Discount economy. Booking class. H, M, Q, S, U, V, W.
- Booking classes ineligible to earn. Booking class. I, K, L, O, R, T, X.
What does booking class K mean?
K - Economy/Coach Discounted. L - Economy/Coach Discounted. M - Economy/Coach Discounted \u2013 Usually an upgradable fare to Business.What is book with miles?
with miles. Use your well-earned Etihad Guest Miles to pay for your next trip. Just tell us where you'd like to go, then choose how you'd like to pay \u2013 using your Etihad Guest Miles, cash or a combination of both. You can even use your miles to pay for taxes and extras.MILES - TEMPO (Visualizer)
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