UPDATE, 2.30pm: The Bali flight chaos caused by ash spewing from a volcano in East Java has caused Jetstar and Virgin Blue to cancel all flights to and from Bali this afternoon on the latest advice from the Darwin Volcanic Ash Advisory Centre.
Emotions ran high at Perth International airport this morning as some holidaymakers had their plans disrupted for a second time in two days.
Jetstar passengers scrambled for their phones and ran to airport check-in desks to get remaining flights to Bali after an 11.10am Jetstar flight was cancelled.
Earlier, Jetstar's 10.05am flight from Perth to Denpasar was initially delayed for an hour. Passengers were then told it would depart but with a warning it could be diverted.
But the flight was cancelled after all passengers were on board and the flight was preparing for takeoff.
Flights leaving from Perth are having to divert around Cyclone Bianca and the volcanic ash cloud.
Air Asia and Garuda Indonesia are both still planning to fly to Denpasar later this afternoon.
Jetstar said it was "closely monitoring the situation".
“In anticipation of being able to depart we will commence aircraft boarding activities if and when the situation improves,” the airline said in a letter distributed to passengers at the airport this morning.
“At this stage we will attempt to depart at the scheduled time from Perth to Depasar. However there is the possibility that your flight may divert back to Perth or Darwin. This decision will be based on and take into account the weather conditions in Indonesia at that time.”
Jetstar passengers were offered the option to transfer their flights to a later date or get a full refund of their fare.
A family of five were trying for the second time this morning to head to Bali after their flight was diverted to Darwin and eventually returned to Perth yesterday.
Adrian Carder, his three daughters and partner are eagerly awaiting departure at Perth Airport this morning.
“It is disappointing because it is the kids' first time but there’s not much you can do about a volcano erupting,” Mr Carder said.
“At six o’clock this morning we got the call the flight was going ahead and when we got here they said the flight could be delayed.”
Mr Carder had planned the trip for nine months and is taking his three daughters, Lauren (11), Aimee (13), and Shannon (15), to Bali as a Christmas present.
Another couple, Zoe Carson and John-Ross Torre, left Perth for Bali yesterday but after being diverted to Darwin for two hours they returned to Perth last night.
They are also trying for a second time this morning to start the holiday they had booked in August.
Kim Lock was travelling to Bali with her sister to celebrate her 50th birthday but after her Jetstar flight was cancelled she was not sure what to do.
“It takes up to 14 days to get a refund so we have to pay cash up front to get another one,” Mrs Lock said.
“We would have assumed they would have helped us out if we wanted to go on another plane, they would have helped. But the priority is safety. It is my 50th and this has been a year in the planning.”
Mrs Lock said she was not giving up and was on the phone trying to book another flight.
Jetstar has offered passengers refunds for their cancelled flight.
Some Jetstar passengers have been able to get on the Air Asia flight to Denpasar at 1.20pm but many missed out.
Husband and wife James and Natasha McCrystal were desperately trying Garuda Indonesia to get to Bali.
Yesterday, Pacific Blue flights heading to Bali, including one from Perth, were diverted to Darwin before they reached their destination.
This morning Virgin Blue and Jetstar cancelled flights to and from Denpasar.
Pacific Blue has cancelled three flights from Australia to Denpasar this morning, including a midday flight from Perth.
The airline said it would continue to monitor the situation.
Garuda Indonesia said flights to Denpasar were operating as normal. It said a 7.15am flight today from Perth left as scheduled.
The Perth International Airport website indicated an Air Asia flight at 5am departed. Another flight is due to leave 1.20pm today.
Several hundred passengers were stranded yesterday after three Jetstar flights were cancelled on Thursday night.
Those people - in Sydney, Darwin, Perth - were to be offered the next available flights, a spokeswoman said.
Australian-bound passengers stranded in Bali were offered overnight accommodation.
"We will be making sure they can travel as soon as possible, we will be liaising with them in regard to their travel arrangements but we also offered full flexibility should they want to delay their travel or take a refund," the spokeswoman said.
On its website, updated at 6am (AEDT) today, Virgin Blue said all flights to and from Bali had been cancelled for the next 24 hours.
"This decision has been made based on advice from the Darwin Volcanic Ash Advisory Centre," the website said.
"Guests currently in Denpasar with bookings which were scheduled to depart within the next 24 hours are requested to stay in their current accommodation and await further advice from Virgin Blue."
The Darwin Volcanic Ash Advisory Centre, part of the Bureau of Meteorology, issued an advisory on Thursday saying Tengger Caldera had erupted, with ash extending 370km north-east.