In some instances, travellers are being forced to fork out $600.
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Last week, thousands of travellers returning home from Bali were left stranded due to Jetstar cancelling a raft of flights.
The airline said that a myriad of external issues, including lightning strikes, bird strikes and delays in sourcing spare parts, were behind the cancellations.
With thousands waiting several days for a re-booked flight, some saw their visas expire.
Australians travelling to Bali are required to pay for a visa on arrival, which lasts for 30 days.
Once that expires, and if a 30-day extension hasn’t been secured at an immigration office, travellers can expected to pay 1,000,000 Indonesian Rupiah per day in fees.
That equates to about $A100.
One Australian mother told 7NEWS that she was forced to pay $600 after overstaying her visa.
In an online forum discussing the popular tourist destination, others said they were left in the dark by the airline.
“Exactly that happened to us… our 23.45 flight out of Denpasar was cancelled and our visas expired,” one woman wrote.
“Two days later we finally got a flight and paid $200… each to Immigration in a tiny office in Australian cash. Jetstar will not help with one cent.
“We tried every possible angle to extend with no success anywhere.”
A spokesperson for Jetstar told 7NEWS.com.au that customers impacted by cancellations were entitled for reimbursement for accommodation up to $150 per room and meals up to $30 per person.
They are also entitled to other expenses, which are considered on a case-by-case basis.
As for when the full fleet will be back in the air, it’s understood there are still three Boeing 787 aircraft requiring engineering work.
Two of those are expected to be back in operation this week.
Other planes have been deployed to supplement services in the meantime.
The spokesperson said that all customers impacted by last week’s issues were offered alternative flights out of Indonesia.