Does a Find My tracker work on a plane?

The short answer

Yes, the tag keeps working. No, you will not usually see it move while you are flying.

A Find My accessory is a Bluetooth beacon, not a phone. It has no SIM, no GPS and no way of reaching Apple by itself. It broadcasts a rotating identifier, any nearby Apple device that hears it can pass an encrypted report along, and the owner is the only person who can read it. The whole mechanism therefore depends on two things being true at once: a device is near the bag, and that device has a connection. In the air, the second one almost never holds.

What the tag is doing at each stage

That freeze during cruise is the single fact people get wrong, and it is worth sitting with. Your suitcase has not vanished. Nothing near it is in a position to tell you anything.

Why the quiet stretch happens

Three things stack up. The hold is a sealed aluminium box below the cabin floor, and metal is poor to Bluetooth. Handsets in the cabin above are mostly in aeroplane mode. Most importantly, even a device that does hear the beacon needs an internet connection before the report can leave it, and paid cabin wifi on a phone in someone's seat pocket is not a network you can count on.

The result is a gap of a few hours in the record rather than a gap in coverage. When the aircraft is unloaded, the bag falls back among ordinary devices and the map catches up. The lag at that point is usually short at a busy airport and longer at a quiet one, which is the same rule that governs how much of a network a tag needs anywhere else.

Is one allowed in the hold?

Broadly yes, and airline-by-airline detail belongs in its own article rather than a paragraph here: the UK rules on tags in checked baggage covers the coin cell question and what to do if a check-in agent queries it. The short version is that a sealed button cell in a small accessory is not the hazard class anyone is worried about, and the regulators have not treated it as one.

The trade-offs, set out honestly

The second row of that table is the one that decides the purchase for most people. A tag answers "where was it last, and where is it now", not "where is it this second". For a suitcase that is almost always enough, because a suitcase's failure mode is being in the wrong building, not being three metres from where you think.

So is it worth putting one in?

The case for it is narrower than the marketing and stronger than the sceptics allow.

If your bag arrives with you, the tag told you nothing you did not learn at the carousel, and you have spent money on reassurance. That is the honest downside and it applies to most flights.

If your bag does not arrive, the picture inverts. The moment the belt empties, the first question is whether the case was ever loaded. A tag answers that from the pattern of its own reports: one that went quiet at the departure airport and then reappeared there tells you it never flew, which is a different conversation with the desk than a shrug. If it reappears at a hub you transited, you know the transfer missed. Either way you file the report knowing something, and you can hand the airline a shareable location through Share Item Location rather than a description.

Weighed up: for hand luggage only, do not bother. For a checked bag with a connection in the middle of it, or for anything you could not replace on arrival, the information is worth having precisely because it arrives at the moment you have none.

How Locata Tag handles a flight

A Locata Tag behaves exactly as described above, because it is an MFi certified Find My accessory rather than anything cleverer. Find My lists it among your Other Items, on any iPhone or iPad from iOS 14.5 onwards, every position it sends is encrypted end to end, and there is no app, account or subscription attached to any of it. Android is not supported and never will be.

The hardware is built to be forgotten in a case: IP67 sealing against a wet apron, a replaceable CR2032 good for up to two years, and a disc 36.3 mm across, 9 mm thick and weighing around 10 g. Within about 60 m it rings at 80 to 100 dB, which is how you separate your black case from four identical ones at a hotel. If you want the placement detail, we have written about hold versus hand luggage separately.

Boxes contain two tags and two key rings, which covers the case and the cabin bag on the same trip: that is the whole thing.