Find cheap flight tickets from Sri Lanka to Southeast Asia

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Southeast Asia, as well as popular online travel agencies
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Booking Insights

KAYAK's insights & trends for flights to Southeast Asia

Get data-powered insights and trends for flights to Southeast Asia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Southeast Asia?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Southeast Asia from Sri Lanka found in the last 72 hours was to Bangkok Suvarnabhumi Airport, at ₹ 23,991 return. The most popular route is Colombo Bandaranaike Intl Airport (CMB) to Bangkok Suvarnabhumi Airport (BKK) and the cheapest return airline ticket found on this route in the last 72 hours was ₹ 23,991.

What is the cheapest month to fly from Sri Lanka to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Sri Lanka to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sri Lanka to Southeast Asia is October, when tickets cost ₹ 24,989 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is ₹ 32,685 and ₹ 29,788 respectively.

How far in advance should I book a flight from Sri Lanka to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Sri Lanka to Southeast Asia, you should book around 3 weeks before departure, which saves you about 22% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Which is the cheapest airport to fly into in Southeast Asia?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Southeast Asia is Bangkok Don Mueang Intl Airport (DMK), with an average flight price of ₹ 16,803.

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Good to know

Low seasonNovember
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (19% more expensive on average)

FAQs for booking flights from Sri Lanka to Southeast Asia

  • How does KAYAK find such low prices on flights from Sri Lanka to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sri Lanka to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sri Lanka to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sri Lanka to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sri Lanka to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Sri Lanka to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sri Lanka to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Sri Lanka to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Southeast Asia?

    Based on KAYAK data, the cheapest day to fly to Southeast Asia is Tuesday when return tickets can be as cheap as ₹ 31,838. On the other hand, the most expensive day to fly is Thursday, when return prices are ₹ 78,835 on average.

  • What is the cheapest time of day to fly to Southeast Asia?

    The cheapest time of day to fly to Southeast Asia is generally at night, when retur flights cost ₹ 35,851 on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is ₹ 40,679.

Reviews of the top airline flying from Sri Lanka to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Sri Lanka to Southeast Asia. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sri Lanka to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
IndiGoOverall score based on 507 reviews
6.8Comfort
6.9Boarding
6.3Food
5.7Entertainment
7.4Crew
Airline reviews

As budget airline everything was good. Except that - boarding process can be more organised. Then if entertainment systems are not operational. Its better to keep them switch off.

8.0 ExcellentSanchi, Dec 2025
DEL - IST
Read more IndiGo reviews

As budget airline everything was good. Except that - boarding process can be more organised. Then if entertainment systems are not operational. Its better to keep them switch off.

Flight cancelled after 4+ hour delay. Indigo created a nightmare scenario and showed the most callus attitude towards the passengers I will refer to them was IndiNoGo!

Very nice and pleasant. Boarding was quick and the crew were responsive

Foreign nationals are not permitted to check in online in advance. We can only check in at the airport, so choice of seat was limited. I was stuck in a very uncomfortable location. I would expect a meal included in a flight of this duration. The food options to buy are very basic. IngiGo are a very good domestic carrier, but if they are serious about operating more international, longer haul flights, they need to improve this service to match every other airline I know.

IndiGo is low cost and therefore no frills, but is always a pleasant experience. No mood lighting and fancy features but clean aircraft, professional crew and absolute value for money.

Very hard seats. No food service, even though price is not competitive.

Very hard seats for long flights. No food even on International flight. Won't fly Indigo again if I can help it.

Terrible experience at IST airport due to mismanagement by ground and wheelchair staff.

Some seats don’t recline. No USB port or power outlet, no inflight WIFI - not even for SMS/Messaging apps. Ontime performance was very good. They should have at least one crew member who speaks the local language, for flights like these.

Although we took the XL seats with more width, we found that you do not have a seat in front to stow your personal item, nor can you stretch your legs. This is not the best option for a comfortable seat. Boarding was timely but disorganized without any row based entry.

Everything you need to know for your flight to Southeast Asia

Cabin class types available on flights to Southeast Asia

Cabin classes available on flights to Southeast Asia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class Flights to Southeast Asia
Business Class Flights to Southeast Asiafrom ₹ 16,478
Prem Econ Class Flights to Southeast Asia
Economy class Flights to Southeast Asiafrom ₹ 12,495