Aircraft maker Boeing Co (NYSE:BA) revealed it had struck a deal to supply 30 planes to Iran's Aseman Airlines worth $3bn.
It is the first major sale to Iran by a US company under the new Trump administration.
Reportedly the European Union has blacklisted Aseman from European skies in December last year due to safety concerns.
It is not the first time Boeing has been active here.
It previously agreed a $16.6bn sale in the Islamic Republic when Barack Obama was in power and after he struck a nurcear deal with Tehran - an agreement which Trump has criticized.
Boeing said today's deal includes purchase rights for an additional 30 737 MAX aircraft for Tehran-based Aseman, which flies domestic and international routes and revealed first deliveries would start in 2022.
Boeing shares in New York are up 0.62% to $177.74.