Bandaranaike International Airport is Sri Lanka's main gateway, just outside Colombo, and it is well served for lounges, with more than one option that takes Priority Pass and welcomes walk-in guests. If you have an early-hours departure, which is common here, a lounge can make the wait far more comfortable.
Which lounges you can use
Colombo has a good spread of lounges in the main terminal. The Palm Strip Lounge is airside and open around the clock, with a la carte dining that runs from Sri Lankan hoppers to Western club sandwiches. The Araliya lounges sit near the departure gates, with the Araliya Business Class Lounge on the first floor by Gate 6 and the Araliya Lounge beside Gates 6 and 7. All of these are open to Priority Pass members, and they also welcome walk-in and prepaid guests.
Access methods and day passes
You have several ways in at Colombo: a Priority Pass or similar membership, a paid walk-in at the door, a prepaid lounge pass booked online, or eligible premium credit cards. Walk-in access at the Palm Strip Lounge has started from around twenty-six US dollars per person, with the Araliya lounges similarly offering day passes at the door or online. Because Colombo has so many late-night and early-morning long-haul departures, pre-booking a slot in the busy hours is worth it, and it can sometimes be cheaper than the walk-in rate.
Amenities and tips
Expect proper meals rather than just snacks at the a la carte lounges, along with drinks, Wi-Fi, and comfortable seating to reset before a long flight. If one lounge is full at peak departure times, another is usually a short walk away, which is an advantage of Colombo's multi-lounge setup. Confirm the current price and your access method before you travel, and use the comparison below to weigh a membership, a day pass, or your credit card benefit.

