Hamad International Airport in Doha. Photo: Reuters/File

Dubai-based carrier Emirates said it will suspend all flights to and from Doha from Tuesday morning until further notice, joining UAE-based Etihad Airways in a similar move amid a diplomatic spat between Qatar and some of its Gulf neighbors.

The move came after Saudi Arabia, Egypt, the United Arab Emirates and Bahrain severed their ties with Qatar on Monday, accusing it of supporting terrorism, opening up the worst rift in years among some of the most powerful states in the Arab world.

Emirates said the last flight from Dubai to Doha will depart at 2:30 am on Tuesday, while the last flight from Doha to Dubai will depart at 3:50 am.

"All customers booked on Emirates' flights to and from Doha will be provided with alternative options, including full refunds on unused tickets and free rebooking to the nearest alternate Emirates destinations," the airline said in an email.

Dubai-based budget carrier flydubai said on Monday it would suspend flights to and from Doha from Tuesday after the United Arab Emirates severed ties with Qatar.

"From Tuesday 06 June 2017 all flydubai flights between Dubai and Doha will be suspended," the statement on Monday said.

Air Arabia also said it had suspended flights between Sharjah and Doha effective Tuesday until further notice.

The airline's last outbound flight from Sharjah to Doha will depart at 18:30 local time on Monday, while the last inbound flight from Doha to Sharjah will depart on Monday at 19:25 local time.

Passengers who hold existing reservations on Air Arabia flights to Doha after June 5 will be provided with the option of a full refund or booked to other destinations, it said.

Saudi Arabian Airlines (Saudia) has also suspended all flights to Qatar, it said on its official Twitter account on Monday, without providing further details.

Meanwhile, in a tit-for-tat move, Qatar Airways said on its official website on Monday that it had suspended all flights to Saudi Arabia.