The airline will use the club's logo, trademark, name and imagery across all its marketing materials.
BMI branding will appear at the Gunners' ground in Highbury on perimeter advertising boards, media backdrops and home match programme advertising. The airline will have ground access for sampling activity and will be given hospitality packages for commercial and promotional use.
BMI will gain access to Arsenal's database of supporters and the airline will be working on flight promotions for fans' air travel to domestic and European match fixtures.
The airline declined to comment on the value of the deal but said it was its biggest to date.
Adrian Ford, the commercial director at Arsenal, said: "BMI can give us rapid access to airports across the UK, Europe and the world, providing the team with the very best service and attractive benefits to our supporters."
Earlier this month the North London football club announced it would set up a television station for fans outside the UK. Arsenal TV will screen match action, interviews and news from the club. It is to be produced and distributed by TW1, an independent production company and broadcaster that specialises in sports programming.
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