What to Know Before Your First International Flight

The main difference between a domestic and an international trip is the border. You leave one country and enter another, and both sides want to know who you are. Nearly everything that feels unfamiliar comes from that.

Weeks before: documents first

Start with your passport. Many countries require it to be valid for a certain period beyond your travel dates, often three or six months. Some also want one or two blank pages. Check the expiry date now, not the week you leave.

Then check whether you need a visa, an electronic travel authorisation, or nothing at all. The answer depends on your nationality, the destination and sometimes the purpose of the trip. Requirements can change, always verify current rules with the relevant official authority, usually the embassy or the government's official immigration website.

A few days before

• Check in online when it opens, and read any messages about document checks.
• Confirm your baggage allowance, since international and domestic fares can differ.
• Tell your bank you are travelling so cards are not blocked.
• Save the address of your first night's accommodation, you may be asked for it on an arrival form.
• Look up how you will get from the arrival airport to where you are staying.

On the day: allow more time

For international departures most airlines suggest arriving around three hours before the flight, especially at large airports. That sounds like a lot, and sometimes it is, but queues at check-in, security and exit passport control can stack up quickly.

The usual order is check-in and bag drop, then security screening, then outbound passport control (in countries that have it), then the departure gate. Once you are past passport control you are "airside" and in principle you have left the country.

At the gate and on board

Boarding on international flights often starts 40 to 60 minutes before departure because there are more passengers and sometimes an extra document check at the gate. Listen for your boarding group rather than queuing early.

On long flights, small things help: drink water, move around a bit when the seatbelt sign is off, and keep your passport and any arrival forms in a bag you can reach without opening the overhead bin. Some airlines hand out landing cards during the flight, others use online forms completed in advance.

Arriving in a new country

After landing you follow signs for Arrivals or Immigration, not baggage. Passport control comes first. An officer or an automatic gate checks your passport and may ask a couple of simple questions about how long you are staying and why. Answer plainly, it is routine.

Then you collect checked bags and pass through customs. Many countries use a green channel for nothing to declare and a red channel for goods that must be declared. If you are not sure whether something needs declaring, declare it, it is much easier than explaining later.

If something goes wrong

Delays and missed connections happen to everyone eventually. The airline operating your flight is the first point of contact for rebooking. Keep receipts for any expenses and take photos of departure boards if your flight is disrupted. You probably will not need them, but if you do, they help.

The first international trip is mostly about sequence. Get the documents right, give yourself time and follow the signs, and the rest falls into place.