"We look forward to a future that will give us more opportunities together with Royal Jordanian, where we will build on the synergies of the two networks and explore avenues of cooperation."
SriLankan will become a full 'oneworld' member from next year.
"Our partnership will also allow us to boost the oneworld global network in a region of high air travel demand, Royal Jordanian chief executive Amer Hadidi was quoted as saying.
SriLankan said the link between the two airlines will be expanded to have codeshare operations beyond Colombo and Amman in the future.