Flying into Phnom Penh (PNH) from Bangkok or Kuala Lumpur, the person most likely to ask about your exit plans isn't a Cambodian officer. It's the check-in agent at your departure airport. Airlines carry the cost if a passenger is refused entry, so many of them ask for proof that you'll leave. Here are five steps to get that sorted before you reach the desk.

A dummy ticket, also called an onward ticket, is a real PNR booked for visa or border-check purposes without paying for the flight. It's one tool among several, and whether you need one depends on how you're travelling, not just on where.

Step 1: Decide How You're Actually Entering Cambodia

Start with the border, because the answer changes completely. Most visitors arrive by air at Phnom Penh or Siem Reap, but plenty cross by land from Thailand at Poipet, from Vietnam at Bavet, or from Laos in the north. A land arrival means no airline desk at all, so the question becomes what the border post itself wants to see.

Air arrivals have two checkpoints, and they're separate. The first is the airline at your origin airport. The second is Cambodian immigration on landing. Airlines work from a travel-document database and their own risk rules, while the officer applies the country's entry law. Passing one doesn't guarantee the other, which is why you shouldn't treat a relaxed check-in as the end of the matter.

Write down your entry point, your carrier and your connection airports now. Everything in the next four steps hangs off that short list. Keep it simple.

Step 2: Read the Official Entry Page, Then Stop Reading Forums

Before you spend a penny, read what a government actually says about Cambodia. The UK government's Cambodia entry requirements page covers visa arrangements, passport validity and other conditions in one place, and it's updated when the rules change. It's written for British passport holders, so if you hold another passport, check your own government's equivalent as well.

Two habits help here. First, note the date you read it. Entry rules shift, and a screenshot from last year is no use to anyone. Second, separate "the country requires this" from "the airline asks for this". Forum posts blur the two constantly, and the difference matters because it tells you who you need to satisfy.

If the official page doesn't mention proof of onward travel, don't assume you're off the hook at the airline desk. Carriers set their own policies and apply them at their discretion. Plan for the stricter of the two.

Step 3: Match the Proof to Your Real Exit Route

This is where most travellers go wrong. They book a flight out of Cambodia because "onward ticket" sounds like it means a flight, when their actual plan is to walk across the border into Vietnam or Thailand a fortnight later.

Think through your honest plan:

  • Flying out of Cambodia: your proof should be a flight, from a Cambodian airport to a destination you could plausibly reach, on a date that fits your stay.
  • Leaving overland: a flight from Cambodia may not reflect your plan. Our guide to onward tickets when you're leaving by land explains how travellers handle the mismatch between a land exit and an air-focused check-in desk.
  • Continuing to a third country: a flight from Cambodia to that country, or onward from a neighbouring hub, is usually the most natural fit.

Dates matter more than people expect. Be realistic. If you intend to stay for three weeks, a flight departing in two days looks odd, and one departing in six months looks equally strange. Pick a date that sits sensibly inside the permitted stay on the official page, with some margin.

Step 4: Build the Booking So It Survives a Close Look

Whichever route you choose, a document only helps if it holds up when somebody examines it. A few details do most of the work.

The name must match your passport exactly, including order and any middle names the passport shows. A mismatch is the single most common reason a perfectly good reservation gets rejected at a desk.

The booking should be a live record, not a picture. Some travellers rely on a PDF that was never connected to an actual reservation, and that falls apart the moment an agent types the reference into the airline's system. Our explainer on how to tell a dummy ticket from a real ticket walks through what separates the two.

Keep the supporting pieces tidy as well: the confirmation email, the reference, the itinerary. You don't need to hand over a folder. You do want to find them in under a minute while a queue forms behind you.

Step 5: Verify It Before You Leave for the Airport

Last step, and the one people skip. A day or two before you fly, look the booking up on the airline's own website using the reference and your surname. If it appears with the right name, route and date, you're in good shape. If it doesn't, you've found the problem at home instead of at the counter.

Check it again on the morning of travel, because reservations can be changed or cancelled by the carrier, and you'd much rather know in your kitchen than at the gate.

Then rehearse the short version of your plan out loud. An agent might ask where you're going next or how long you're staying. A calm, consistent answer that matches your documents is worth more than any extra piece of paper.

Don't treat any of this as legal or immigration advice. Rules differ by passport, airline and day, so confirm the details with official sources before you travel.

Ready to back your Cambodia plans with a verifiable onward reservation?