(NATIONAL) PIA flight operations affected amid fuel supply delay.

QUETTA -- Pakistan International Airlines (PIA) is facing considerable delays in both international and domestic flight operations as the Pakistan State Oil (PSO) is unable to ensure timely delivery of fuel to the national flag carrier, according to a report on Tuesday.

The flight operations were affected other airports nationwide, including Quetta, Peshawar, Multan, and Sialkot, where the passengers of the national flag carrier encountered several hours of delays.

PIA's flight 501 which was scheduled to departure at 7 am, is still grounded, while flight 849 which was scheduled to take off at 7 am from Lahore to Jeddah faced a delay and rescheduled for 12 pm...