First of all, why do you want to earn miles? Is it for status or for redemptions? Which is more important to you? Status involves earning x amount of miles within a certain time period to move up a tier. With certain status levels you get priority in most scenarios, free upgrades, extra baggage and if you hit the very high tiers you get your own check in, concierge service, blah blah blah. If you don't care about status and want miles to redeem for flights or other services, your choice of FFP will depend on that. BTW I wouldn't recommend redeeming FF miles for anything other than flights. Everything else is extremely poor value compared to what you get for flights.
What route or routes will you be flying? You have the choice of sticking with one airline or flying different airlines within one alliance which allow mileage earning on partners.
For alliances you have the following options...
Star Alliance:
- Adria
- Air Canada
- Air China
- Air New Zealand
- ANA
- Asiana Airlines
- Austrian
- Blue1
- Bmi
- Brussels Airlines
- Continental Airlines
- Croatia Airlines
- Egyptair
- LOT
- Polish Airlines
- Lufthansa
- Scandinavian Airlines
- Shanghai Airlines
- Singapore Airlines
- South African Airways
- Spanair
- Swiss
- TAP Portugal
- Thai
- Turkish Airlines
- United
- US Airways
Oneworld:
- American Airlines
- British Airways
- Cathay Pacific
- Finnair
- Iberia
- Japan Airlines (JAL)
- LAN
- Malév
- Mexicana
- Qantas
- Royal Jordanian
- S7 Airlines
Skyteam:
- Aeroflot
- Aeromexico
- Air Europa
- Air France
- Alitalia
- China Airlines
- China Eastern
- China Southern
- Czech Airlines
- Delta Air Lines
- Kenya Airways
- KLM
- Korean Air
- TAROM
- Vietnam Airlines
Try to stick within the one alliance and credit all your flown miles to one of the partner programmes. Which programme you pick depends on who's metal you fly and the generosity of their offering. For the particulars of each airlines and to get an idea of what their members are thinking, head over to
www.flyertalk.com to get an idea of what they entail.
How many miles are you thinking of flying? If you are planning on around 50k, I'd suggest sticking with Star Alliance as you can get Star Alliance Gold status which has excellent benefits like lounge access worldwide (they have more and better lounges than anyone else), excellent baggage allowances and priority on waitlists in the event of irrgeular operations.