What to Do If Your Luggage Is Lost at a UK Airport

There’s a particular sinking feeling that comes with watching an empty baggage carousel go round for the third time. If your luggage is lost at a UK airport, don’t panic and don’t just walk out — the first 30 minutes determine how smoothly everything after goes. Here’s exactly what to do, in order.

First, the terminology matters. Airlines distinguish between delayed bags (the vast majority — turned up within a couple of days), genuinely lost bags (declared lost after 21 days), and damaged bags. Almost everything below applies to delayed bags, which is what you’re almost certainly dealing with.

Step one: file the Property Irregularity Report

Before you leave the arrivals hall, find the airline’s baggage desk or handling agent and file a Property Irregularity Report (PIR). This is non-negotiable — without a PIR reference number, your claim barely exists. Describe the bag precisely: brand, colour, size, distinguishing marks, and ideally a photo (this is why photographing your bag before every trip is such a good habit).

Get the reference number, a phone number or web link for tracking, and the name of the person who helped you. Ask directly: “What’s the process from here, and when should I expect an update?” Vague reassurances aren’t a process.

What to do about lost luggage: your spending rights

Here’s the part most people don’t know: while your bag is missing, the airline must cover your reasonable essentials — toiletries, underwear, a change of clothes, phone charger, and anything you need for work or an event you’re travelling for. The Montreal Convention, which governs this internationally, caps total liability at around £1,300 per passenger, so keep spending sensible and keep every receipt.

Buy what you need, not what you’d like. A £40 pair of jeans from Primark is reasonable; a £400 designer outfit is asking for an argument. If you’re travelling for a wedding or a business meeting and need specific items, keep the invitation or agenda — it strengthens your claim enormously.

Tracking, chasing and escalating

Most airlines now have online bag trackers — use them, but don’t rely on them. If 48 hours pass with no meaningful update, start chasing daily by phone and email, quoting your PIR number every time. After five to seven days with no bag, submit a formal written claim for your essentials spending, attaching receipts and the PIR.

If your bag is still missing after 21 days, it’s officially declared lost, and you can claim for the bag’s contents up to that £1,300 Montreal Convention limit. This is where a home contents insurance policy or premium bank account travel insurance can top things up — check what you’re already covered for before buying anything new. If your trip was disrupted more broadly, you may also want to read how to claim flight delay compensation in the UK.

How to stop it happening next time

• Photograph your bag — exterior and a quick snap of the packed contents. Takes 30 seconds, invaluable in a claim.
• Use a tracker. An AirTag or Tile in your case won’t get the airline to move faster, but knowing your bag is sitting in Lisbon when they insist it’s in London changes the conversation.
• Split essentials. Medication, one change of clothes, chargers and valuables go in hand luggage, always.
• Remove old bag tags from previous trips — they’re a genuine cause of misrouting.
• Check in early — tight connections are where bags get lost. Our guide to how early to arrive at the airport explains sensible timings.

The Civil Aviation Authority publishes clear guidance on baggage rights, and it’s worth a read before you fly — five minutes now saves hours of stress later.

If the airline won’t pay up

Airlines sometimes lowball essentials claims — offering £50 for three days without your bag, or rejecting items as “unreasonable”. Push back in writing: quote the Montreal Convention’s liability limit (around £1,300), attach receipts, and explain why each purchase was necessary. Mention the specific circumstances — a business trip, a wedding, travelling with children — because “reasonable” is judged in context.

If the airline still refuses, escalate to their ADR scheme or the CAA, exactly as with delay compensation. And if your bag is declared lost after 21 days, claim for the contents properly: list everything, with approximate values and ages. Photos of the packed bag are gold here. Most people under-claim out of embarrassment — don’t. That £80 coat and those £60 shoes were real money.

How travel insurance fits in

Your travel insurance usually covers delayed baggage too — typically £100-300 for essentials after a set delay (often 12 hours), plus cover for permanently lost bags. Claim from the airline first (they’re primarily liable), then use insurance for anything above the airline’s payout or for excesses. Check whether your home contents insurance covers possessions away from home — many policies do, often with better limits than travel insurance. And premium bank accounts (Monzo Premium, Nationwide FlexPlus, packaged accounts generally) often bundle travel insurance you’re already paying for — check before buying a separate policy.

Damaged bags: the parallel process

If your bag arrives damaged rather than missing, the process is similar but the deadline is tighter: you must report damage in writing within 7 days of receiving the bag (versus 21 days for delay claims). Report it at the airport if you spot it there — staff will note it on the PIR — but the written claim with photos is what counts. Airlines typically offer repair, replacement or a depreciated cash value; push for replacement value on bags under two years old.

Photograph the damage from multiple angles before you use the bag again, keep the damaged bag until the claim settles (the airline may want to inspect it), and note that damage to the contents is claimable too — the £200 headphones crushed inside the cracked case count. The same Montreal Convention limits apply, and the same escalation routes if the airline stonewalls.

Keep calm and document everything

Over 99% of “lost” bags are just delayed and turn up within a few days — the system does work, slowly. Your job is to protect your position: file the PIR before leaving the airport, spend sensibly on essentials, keep every receipt, and chase in writing. Do that, and even in the worst case you’ll be properly compensated rather than left out of pocket.