The abbreviation "ETA" primarily stands for Estimated Time of Arrival , which refers to the anticipated time a transportation system (such as a ship, plane, or vehicle) is expected to arrive at its destination. This term is widely used in shipping, logistics, travel, and project management to indicate when something or someone is expected to reach a location or complete a task

. Additionally, ETA can stand for Electronic Travel Authorization , which is a digital entry requirement for visa-exempt travelers to certain countries, such as Canada and the UK. An ETA in this context is an electronic permission linked to a traveler's passport, allowing them to travel to a country without a visa for short stays, but it does not guarantee entry

. In summary:

• ETA = Estimated Time of Arrival : Common in transportation and project management to indicate expected arrival or completion time.
• ETA = Electronic Travel Authorization : A digital travel permission required for entry into some countries for visa-exempt travelers.

Both meanings are widely recognized depending on the context