Royal Jordanian will transfer all flight operations to the new terminal at Queen Alia International airport in Amman on 21 March.
The terminal covers an area of more than 103,000 square metres, boosting capacity from 3.5 million to 9 million passengers per year.
Annual capacity at the airport will subsequently grow to 12 million in the final stages of its development.
The new terminal - which was designed by British architect Norman Foster - will initially operate with eight new gates. Phase two will add another four gates, while a total of 25 gates will be in use upon completion.