G Adventures is extending the suspension of tours until June 30.
The “necessary decision” to further suspend all tours was taken due to the continuing Covid-19 global pandemic.
The adventure operator is offering 110% travel credits for up to two year to those with fully paid bookings on the cancelled trips.
Travellers who have not yet made their final payment will have a ‘lifetime deposit’ kept on file to put towards a future tour.
The company said: “The health and safety of our travellers and staff is our main priority and this is an essential measure to protect our travellers and our people at this time.
“We are not suspending tours beyond June 30 as we wish to keep the door open in the event the current situation evolves in a way that enables us to travel again.
“However, we do understand people may feel uncertain about travelling in the upcoming months, so we are offering travellers booked on tours departing up to September 30, 2020 the option to transfer their booking to a future departure date for the same price.
“Alternatively, they can pay in full and receive a 110% travel credit for a future tour.
“G Adventures is notifying all travellers regarding tour suspensions and advising travellers with flight bookings to contact their insurance/air providers for details on compensation.”