Jetstar has come dead last in a new survey of more than 100 airlines.
A new global study has found Jetstar to be the worst performing overall according to more than 11,000 people who took part.
But the budget airline has hit back, saying the survey lacks "veracity".
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In comparison Australia-based airline Qantas ranked the 36th best airline in the world and Emirates came out on top.
The study was conducted by Choice, in association with watchdogs from around the world, and found more than a third of passengers who flew with Jetstar said they experienced disruptions from flight cancellation and waiting times of an average of at least four hours after scheduled departure times, the Daily Mail reported.
Jetstar only received one star out of five for overall satisfaction. The airline was rated 4.51 out of 10 for comfort and its website scored 4.81 out of 10.
Despite the findings, Jetstar say they question the results.
"There are a lot of holes in this latest survey, including leaving out our main competitor Tiger because they didn't collect enough responses, so the veracity of the report is questionable," a spokesperson said.
Air New Zealand ranked 26th in the world - well ahead of the two Australia-based airlines.
Here are the top five airlines according to the survey:
1. Emirates based out of the United Arab Emirates 8.29
2. Avianca based out of Columbia 8.17
3. Qatar Airways based out of Qatar 8.15
4. Luxair based out of Luxembourg 8.1
5. Singapore Airlines based out of Singapore 8.1