Singapore Airlines will begin service from Riyadh beginning Dec. 14, reported Arab News. Flights will operate four times a week, via Dubai using the Boeing 777-200 aircraft. The flights will leave Riyadh at 2015 on Sundays, Tuesdays, Thursdays and Saturdays and arrive in Singapore at 1130 the following day. The airline is offering a promotional return ticket for SR1,999 for a period of two weeks from Dec. 14. The flights will leave Riyadh at 2015 on Sundays, Tuesdays, Thursdays and Saturdays and arrive in Singapore at 1130 the following day. The airline is offering a promotional return ticket for SR1,999 for a period of two weeks from Dec. 14.