American Airlines and Gulf Air have a reciprocal codeshare agreement with each other. American Airlines codeshares on Gulf Air from London, Paris, Frankfurt to Bahrain and vice-versa. Also to Kuwait and Doha via Bahrain and vice-versa. Gulf Air codeshares on American Airlines from London Heathrow, Paris and Frankfurt to US points: New York, Boston, Miami, Chicago, Dallas/Fort Worth, Los Angeles, Raleigh-Durham and vice-versa.
Egypt Air and Gulf Air codeshare between Bahrain to Cairo and vice-versa through a reciprocal code-share agreement.
Philippine Airlines codeshares on Gulf Air to Manila from Bahrain and vice-versa through a one-way agreement.
Royal Jordanian codeshares on Gulf Air from Bahrain to Amman and vice-versa through a one-way codeshare agreement.
Saudi Arabian Airlines
Saudi Arabian Airlines and Gulf Air have a reciprocal codeshare agreement, Saudi Arabian Airlines codeshares on Gulf Air from Dammam, Riyadh, Jeddah, Medina and vice-versa. Saudi Arabian Airlines also code shares on beyond points on Gulf Air from Riyadh-Bahrain-Bangkok and vice-versa. While Gulf Air codeshares on Saudi Arabian Airlines to Jeddah, Riyadh and vice-versa.
Thai Airways and Gulf Air have a reciprocal codesharing agreement for travel on both airlines' services. Codeshare on Gulf Air is between Bangkok and Bahrain and vice-versa on Thai from Bangkok to Phuket, Chiang Mai and vice-versa.