0803 GMT October 25, 2020
The airline announced the issue on Thursday, Mehr News Agency reported.
The flight, No. 729, leaves Imam Khomeini International Airport (IKIA) at 17:40 on Fridays every week and arrives at Cologne Bonn Airport at 21:00 local time.
On the same day another flight, number 728, will take off from Cologne Bonn Airport at 22:30 local time and will land at IKIA at 6:15 a.m. on Saturday.
IranAir operates flights to three airports in Frankfurt, Cologne and Hamburg weekly, according to the airline.
On September 20, IranAir announced it was restoring flights to Istanbul after a seven-month halt that was caused by the spread of the coronavirus pandemic in Iran and other parts of the region.
IranAir said in a statement that flights to Istanbul would resume as of September 25 with Flight 719 from IKIA to Istanbul.
The airline said passengers should have had a polymerase chain reaction (PCR) test 72 hours before arrival in Istanbul airport confirming they are free of coronavirus.
The airline said its certificate to fly to Istanbul had been issued “based on negotiations between the two countries of Iran and Turkey”.
Istanbul was one of IranAir’s main destinations before the pandemic hit global air travel in late February. The airline has managed to restore flights to key destinations in Europe now that restrictions meant to curb the virus have eased.
Flights to Istanbul had resumed in early July before Turkish authorities reimposed fresh bans on travel from several countries in the Middle East, including from Iran, over concerns about a second wave of the coronavirus outbreak.
The pandemic has had a deep impact on Iran’s aviation industry amid sanctions imposed by the US and allies that ban certain Iranian airlines from traveling to and above major countries.
Domestic air travel has also been impacted with authorities announcing earlier that some companies had lost about 90 percent of demand for flights to main destinations.