Travel insurance is sold the way airlines sell seat upgrades: a checkbox at the worst possible moment, when you're tired, committed, and just want the booking to be over. So most people either click "no" out of reflex, or click "yes" out of vague anxiety and never once open the policy document. Both are mistakes, because travel insurance is genuinely valuable on some trips and genuinely pointless on others, and the only way to know which is yours is to understand what these policies actually do — and, more importantly, what they pointedly do not.

This guide is the result of reading a great many policies with a cynical eye. The aim is not to sell you anything; we don't sell insurance and have no stake in whether you buy it. The aim is to make you an informed reader of the fine print, so that you can tell a policy that will quietly save you from a five-figure medical bill from one that will find a reason to deny your claim. The difference is entirely in the details, and the details are where insurers do their most careful work.

Before anything else

This is general information, not insurance advice, and policies vary enormously by provider, plan and your home state. Always read the actual policy wording — specifically the "exclusions" and "conditions" sections — for the plan you're considering, and ask the insurer directly about anything unclear, in writing, before you buy.

What the coverage categories really mean

A typical comprehensive policy bundles several distinct protections under one price. They are not equally valuable, and understanding each on its own terms is the key to judging a policy.

Emergency medical — the one that matters most

This is the heart of any serious travel policy and the reason to buy one at all. It covers the cost of treatment if you fall ill or are injured abroad, where your domestic health insurance often does little or nothing. The figure to scrutinise is the coverage limit, and it should be large — medical care in some countries, and especially a medical evacuation, can run into tens or even hundreds of thousands of dollars. A policy with a generous medical and evacuation limit is doing the heavy lifting; a policy that skimps here is barely worth carrying regardless of what else it includes.

Emergency evacuation — the expensive emergency

Separate from treatment is the cost of getting you to treatment, or home: an air ambulance off a mountain, a medically-staffed repatriation flight. These are astronomically expensive and are precisely the scenarios that bankrupt the uninsured. For remote or adventurous trips, the evacuation limit can matter more than anything else in the document.

Trip cancellation and interruption

This reimburses prepaid, non-refundable costs if you have to cancel or cut short a trip for a covered reason. Note the phrase "covered reason" — it is the entire game, and we'll come back to it. Done right, this is genuinely useful on expensive, heavily prepaid trips. Done naively, it's where most claim disappointments originate, because travellers assume "cancellation" means "for any reason" when it almost never does.

Baggage and delay

The coverage everyone thinks of first and that matters least. Limits are usually low, valuables are often excluded or capped, and you frequently have to claim against the airline first anyway. Nice to have; never the reason to choose a policy.

"Buy travel insurance for the catastrophe, not the inconvenience. The lost-bag payout is a rounding error. The emergency-airlift coverage is the whole point."

The exclusions that sink claims

Here is where the careful reading pays for itself. Insurers don't deny most claims through villainy; they deny them through clauses you agreed to and never read. The recurring offenders:

How to read a policy in ten minutes

What your credit card may already cover

Before you buy anything, check what you already have. Many mid-tier and premium travel credit cards include some travel protections when you pay for the trip with the card — trip delay, baggage delay, sometimes cancellation, occasionally a limited medical or evacuation benefit. The coverage is often narrower and the limits lower than a dedicated policy, and the medical element in particular is usually weak or absent, so it rarely replaces real insurance for a big or risky trip. But for a modest domestic or low-risk trip, your card's built-in protections may be all you genuinely need. Read the benefits guide; don't pay twice for the inconvenience coverage you already hold.

"Cancel for any reason" — what it really is

If your real worry is simply changing your mind, the standard policy won't help, but a "cancel for any reason" upgrade might. It does roughly what it says — lets you cancel for reasons outside the covered list — but with strings: it costs significantly more, must usually be bought soon after your first booking, and typically reimburses only a portion of your costs rather than the full amount. It's a legitimate product for expensive, uncertain trips. Just go in knowing it's a partial refund at a premium price, not a magic undo button.

A laptop and travel planning items on a desk
Sort the cover at the planning stage, alongside the flights — not in a panic at checkout.

So when should you actually buy it?

Strip away the marketing and a clear decision rule emerges. Buy comprehensive travel insurance — with strong medical and evacuation limits — when any of three things is true: you're travelling somewhere your home health coverage won't follow you (which, for Americans abroad, is most places); you've sunk significant non-refundable money into the trip; or you're doing anything remote or physically risky where an evacuation is conceivable. Those are the situations where the downside without insurance is genuinely catastrophic, and the premium is trivial against it.

Conversely, for a cheap, fully refundable, low-risk domestic trip where your credit card already covers the small stuff, a comprehensive policy can be money spent on a risk that doesn't really exist. The honest answer to "do I need travel insurance?" is "for this specific trip, here's the downside if it all goes wrong" — and if that downside is a ruined weekend rather than a ruined decade, you can probably skip it. Insurance is for the catastrophe. Match the cover to the catastrophe you're actually exposed to, read the exclusions before you pay, and you'll never again click that checkbox blind.