A handful of European airports are implementing trials of quick-fire coronavirus tests, working with airlines to push technologies still being developed as a way to revive stunted international air travel.

The tests, which can be carried out in 30 minutes, are seen as the best hope for the aviation industry to overcome new travel curbs that have brought a modest traffic rebound over summer to a shuddering halt. Other initiatives include a Finnish experiment with dogs that can sniff out the virus.

Rome’s Fiumicino hub became the first worldwide to introduce rapid screening, while London Heathrow, Europe’s busiest airport, has trialed three rival technologies. The International Air Transport Association is backing mandatory checks on departure to unlock flights before the arrival of a COVID-19 vaccine, and Deutsche Lufthansa AG wants to use tests to reopen the trans-Atlantic market.