HANOI, Nov. 27 (Xinhua) -- As many as 15 international flights between Hanoi, Vietnam and Bangkok, Thailand were canceled on Wednesday due to Thai protesters blocking Bangkok's Suvarnabhumi Airport, the Vietnam News reported on Thursday.

    More than 700 passengers were stranded after already checking in at Noi Bai International Airport of Vietnam and another 130 at Tan Son Nhat International Airport in Ho Chi Minh City. Meanwhile, about 500 Vietnamese passengers were also delayed at Bangkok's Suvarnabhumi Airport in Thailand.

    Passengers who booked tickets on the canceled flights can give back tickets to Vietnam Airlines in exchange of receiving a full refund without extra charge, said Thanh.

    Flights bound for Bangkok on Thursday have no fixed schedule and have to wait further developments from the Thai capital, said Vietnam Airlines spokesman Trinh Ngoc Thanh.

    Flights from Hanoi and Ho Chi Minh City to Bangkok by Thai Airways and Air Asia were also reportedly canceled.

    Vietnam Airlines has set up a hotline at (04) 38320320 for passengers planning to travel to Thailand.