Booking a flight to UK

There are many airlines currently running direct flights to different destinations in UK. Some of them are listed below.
British Airways
Lufthansa
Etihad Airways
Fly bmi
Brussels Airlines
Finnair
Cathay Pacific

You can also check for competitive prices of different airlines to find the one in your budget and get a good deal on your booking -
Lastminute.com
Cheapflights
Looking for Best International Flight Deals on Travelocity

Jet airways has special baggage allowance for student and migrant(Tier one) visa holders and their dependants. Please check - Jet Airways baggage allowance for more details.