Bandaranaike International Airport (CMB) pulls more backpackers aside than you'd expect, especially the ones landing on a one-way ticket from Doha or Delhi. Sri Lanka's Electronic Travel Authorization (ETA) is mandatory for most visitors in 2026, valid for stays of up to 30 days, but it's only half the paperwork story.

Does the ETA alone get me into Sri Lanka?

Short answer: no. The ETA confirms you've been pre-approved to travel, but it doesn't replace the standard entry conditions every visitor has to meet, things like showing sufficient funds and proof you're actually leaving the country again. A dummy ticket, also called an onward ticket, is a real PNR booked for visa or border-check purposes without paying for the flight. That's the bit people skip over when they see "ETA approved" land in their inbox and assume the job's done.

The ETA is a pre-clearance document. It's not a guarantee of entry, and it was never designed to cover the onward-travel question at all.

What do immigration officers at CMB actually ask for?

Officers at Bandaranaike International Airport have discretion, and they use it. A passport full of one-way stamps tends to trigger questions, especially if you're arriving from a country where onward-ticket checks are already routine. I watched a guy at the CMB queue get held for a good twenty minutes because his "return flight" was just a plan to book one later, not an actual booking.

What they're really checking is whether you have a documented way out of the country before your ETA expires. That can be a return ticket home, a flight onward to your next stop, or a dummy ticket reserved specifically to satisfy this kind of check. Mattala Rajapaksa International Airport (HRI) in the south sees far less traffic, but the same rules apply there too.

Does a hostel booking in Ella count as proof of onward travel?

No, and this trips people up constantly. A confirmed hostel bed in Ella, or anywhere else on the island, proves where you're sleeping. It says nothing about when or how you're leaving Sri Lanka. Accommodation and onward travel are two completely separate boxes on the checklist, and officers know the difference even if new travellers don't.

I've heard of people showing a printed Booking.com confirmation at the counter and getting sent to secondary questioning anyway. It's not the right document for the job, however solid the booking is.

My plans are open-ended, what if I don't have a return flight?

This is the classic backpacker problem. You don't want to lock in a flight home before you know if you're staying two weeks or heading on to Nepal for a month. Buying a full-price refundable ticket just to satisfy an immigration desk is expensive and, honestly, unnecessary.

A dummy ticket exists for exactly this situation: a real, bookable reservation with a genuine PNR that you can show at check-in or on arrival, without committing hundreds of dollars to a flight you might never take. It keeps your route flexible while giving officers something concrete to look at. If you'd rather not gamble on a flexible itinerary passing without question, book a real onward ticket through My Dummy Ticket before you fly and skip the uncertainty entirely.

How does this fit into a wider South Asia and Maldives loop?

Plenty of travellers arrive in Colombo as one leg of a bigger route, connecting through Doha, Dubai, or Abu Dhabi on Qatar Airways, Emirates, or Etihad, sometimes with Delhi, Mumbai, or Chennai tacked on before or after Sri Lanka. Others land in Colombo and hop to the Maldives next.

Each border you cross on that loop can ask the same onward-travel question independently. Your Sri Lanka entry doesn't automatically cover you for the next country, so it's worth checking what counts as proof of onward travel for India separately if that's part of your route. A dummy ticket only needs to stay valid until you've cleared the specific border it's protecting, and each leg of a South Asia loop might need its own.

So what document actually works?

Here's a rough guide to what tends to satisfy an immigration check at CMB versus what doesn't.

Document Accepted as proof of onward travel?
Confirmed return flight ticket Yes
Dummy/onward ticket with a real PNR Yes
Flight booked on a connecting leg out of Sri Lanka Yes
Hostel or hotel booking confirmation No
Screenshot of a flight search results page No
Verbal statement of travel plans No

The airlines flying you in care about this too. IATA's travel document guidance notes that carriers can be fined for boarding passengers who don't meet a destination's entry rules, which is part of why check-in staff sometimes ask the same onward-travel question before you even reach Sri Lankan immigration. Qatar Airways, one of the more common routes into Colombo via Doha, publishes its own document requirements for exactly this reason.

That check-in step matters more than people expect. If you're curious how thorough it gets, it's worth reading up on whether airlines actually verify a dummy ticket at check-in before you rely on one.

Frequently asked questions

Is the ETA the same thing as a visa?

No. The ETA is a pre-travel authorization system, and it still sits alongside the usual entry conditions, including proof of onward or return travel and enough funds for your stay.

Can I apply for the Sri Lanka ETA after I've already booked flights?

Yes, the ETA is applied for online before you travel, separately from your flight bookings, so the order doesn't matter as long as it's approved before you board.

Does the ETA cover extensions if I want to stay longer than 30 days?

The ETA generally covers stays of up to 30 days, and extensions are handled after arrival through Sri Lanka's Department of Immigration and Emigration.

Will officers definitely ask for an onward ticket at CMB?

Not always, but they can, and it's their discretion, particularly if your passport shows a one-way travel pattern. It's safer to have something ready than to find out at the counter.

Yes. A dummy ticket is a genuinely booked reservation with a real PNR, not a fake document, and it's a normal tool for meeting onward-travel requirements without paying for a flight you don't need yet.

If you'd rather skip the spreadsheet, book a real onward ticket in two minutes.