Biman Bangladesh Airlines will operate a single flight to Riyadh after midnight on 25 October, its first since suspending the route, while its Dammam service restarted on Wednesday as restrictions at Saudi airports continued to reshape travel between the two countries.

The airline said the Dhaka-Riyadh flight will leave Hazrat Shahjalal International Airport at 1:25am Bangladesh time on 25 October. It will decide later whether to operate the rest of its Riyadh schedule, after reviewing the situation, according to a statement from its public relations department.

Flights to Dammam resumed on 21 October and will leave Dhaka at 8am every day until 26 October, using Boeing 777 aircraft. Two Jeddah flights will depart on 22 October, followed by one a day at 7:20pm from 23 to 25 October. Services to Madinah have been running since 18 October with Boeing 787 aircraft, and that schedule is unchanged.

At Dhaka airport, the disruption now covers 134 direct and transit flights and 20,254 passengers, Squadron Leader Sakib of the airport's Security and Flight Management Wing said. Sixty-one of the flights were direct and 73 were transit services. Among direct operators, Biman had 22 affected flights, Saudia 19, US-Bangla Airlines 10 and Riyadh Air 10. IndiGo accounted for 28 transit flights, followed by Emirates with 14, Qatar Airways with nine, flydubai with eight, SalamAir with seven, Air India with six and EgyptAir with one.

The cancellations began after missiles and drones struck King Khalid International Airport in Riyadh on 10 October. Saudi authorities reported 13 people killed and 308 injured, including two Bangladeshis killed and 27 injured, according to figures reported by bdnews24.com. Yemen's Houthi movement said it carried out the attack and later warned airlines and passengers against using Saudi airports, saying it would keep targeting airports and oil facilities. Saudi Arabia leads a military coalition fighting the Houthis in Yemen.

Riyadh's airport was closed after the attack, forcing airlines across Asia and Europe to cancel services. Biman suspended its Dhaka-Riyadh flights and extended the suspension indefinitely on 17 October, saying it would wait for instructions from airport authorities. US-Bangla Airlines cancelled its Dhaka-Riyadh flights until 21 October. Biman described the situation at Saudi airports as gradually improving when it announced the limited restart.

The disruption has fallen hardest on migrant workers. Many passengers on the route are Bangladeshis travelling to jobs in the kingdom, and some have visas or residence permits nearing expiry. bdnews24.com reported that workers whose documents were close to expiry faced particular uncertainty, and that airlines were changing tickets where seats were available. The Civil Aviation Authority of Bangladesh has told carriers to inform passengers about cancellations and schedule changes and to help with rebooking and refunds.

Biman has advised passengers to contact its sales centres for tickets, bookings and travel information. It has not said how many of the 20,254 passengers have been rebooked, how many are still waiting, or whether it will add more flights beyond the ones announced for this week.

Several questions remain open. The 134-flight figure is cumulative and may rise if the restrictions continue. Biman's plan for a single Riyadh flight suggests capacity on the route is still limited, but the airline has not explained what conditions would allow a full schedule to return. Nor has Saudi Arabia announced a date for normal operations at the airport. It is also unclear whether Bangladesh will secure more time for workers whose visas are close to expiring.

The next test comes on 25 October, when the Riyadh flight is due to leave. Before that, the daily Dammam service runs until 26 October, and the extra Jeddah flights are meant to absorb passengers who would normally have travelled through Riyadh. Travellers have been advised to confirm their flight status with the airline before going to the airport, because schedules are still changing at short notice.