Major airlines have asked for a joint coronavirus testing programme, so that travel may resume between the US and Europe.
The owner of British Airways and United Airlines are among the carriers that have signed a letter to US and European Union leaders.
Currently travel between Europe and the US is largely barred.
Carriers are struggling to survive as the coronavirus pandemic has severely disrupted global travel.
In a letter sent on Tuesday to US and European governments, major airline chief executives called for a US-EU testing programme for passengers making trans-Atlantic trips.
Signees of the letter include bosses of