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Cheap flights from Bangkok to Sri Lanka from ฿5,534

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — CMB
5 Sep — 12 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Bangkok to Sri Lanka

Enter your travel dates to find the best prices.

Cheapest flights from Bangkok to Sri Lanka
Explore the most affordable flight options available from Bangkok to Sri Lanka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 August 2026.

Sun 23/820:25 -
Nonstop3h 20m
Sun 13/923:15 -
Nonstop3h 35m
Deal found 1/8฿10,240
Thu 27/820:25 -
Nonstop3h 20m
Sat 5/923:15 -
Nonstop3h 35m
Deal found 1/8฿10,274
Sat 14/1117:10 -
1 stop22h 00m
Sat 21/1114:40 -
1 stop24h 00m
Deal found 2/8฿10,274
Tue 25/820:25 -
Nonstop3h 20m
Mon 14/923:15 -
Nonstop3h 35m
Deal found 1/8฿10,506
Sun 23/820:25 -
Nonstop3h 20m
Wed 16/923:15 -
Nonstop3h 35m
Deal found 1/8฿10,704
Sun 23/820:25 -
Nonstop3h 20m
Mon 14/923:15 -
Nonstop3h 35m
Deal found 1/8฿10,738
Fri 25/920:25 -
Nonstop3h 20m
Thu 1/1023:15 -
Nonstop3h 35m
Deal found 2/8฿10,804
Wed 21/1020:25 -
Nonstop3h 20m
Sun 25/1023:10 -
Nonstop3h 25m
Deal found 2/8฿10,903
Fri 23/1017:55 -
1 stop11h 35m
Sun 8/1117:05 -
1 stop12h 30m
Deal found 6/8฿11,003
Thu 13/807:45 -
Nonstop3h 20m
Wed 26/801:05 -
Nonstop3h 40m
Deal found 5/8฿12,063
Wed 12/815:20 -
Nonstop3h 20m
Thu 27/807:35 -
Nonstop3h 40m
Deal found 5/8฿12,163
Thu 13/807:45 -
Nonstop3h 20m
Sun 16/807:35 -
Nonstop3h 40m
Deal found 3/8฿12,196

Find flight deals from Bangkok to Sri Lanka

Keep the following information in mind while searching for Bangkok to Sri Lanka flight deals. Data was last updated 6 August 2026.

Round-trip from

฿10,240

One-way from

฿5,534

Popular in

May

Cheapest in

November

Average price

฿11,997
Thai AirAsia
  • Thai AirAsia
  • 23/8-13/9
  • Nonstop
  • 6h 55m total
  • Bangkok to Sri Lanka
Search Deals
Thai AirAsia
  • Thai AirAsia
  • 13/9
  • Nonstop
  • 3h 20m total
  • Bangkok to Sri Lanka
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿61,774 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿7,158 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bangkok to Sri Lanka that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 6 August 2026.
Use the filters below to find and compare flights from Bangkok to Sri Lanka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokColombo

BKK Bangkok Suvarnabhumi - CMB Colombo Bandaranaike Intl

BKKCMB

Bangkok Suvarnabhumi

Sun 1/11

08:10-10:10

Nonstop3h 30m

Colombo Bandaranaike Intl

Sun 8/11

17:05-14:10

1 stop19h 35m

฿14,549

BangkokColombo

BKK Bangkok Suvarnabhumi - CMB Colombo Bandaranaike Intl

BKKCMB

Bangkok Suvarnabhumi

Sun 11/10

20:20-15:05

1 stop20h 15m

Colombo Bandaranaike Intl

Wed 14/10

09:40-13:35

1 stop26h 25m

฿14,814

BangkokColombo

DMK Bangkok Don Mueang Intl - CMB Colombo Bandaranaike Intl

DMKCMB

Bangkok Don Mueang Intl

Sun 1/11

16:40-21:50

3 stops30h 40m

Colombo Bandaranaike Intl

Sun 8/11

22:50-10:40

1 stop10h 20m

฿15,278

BangkokColombo

BKK Bangkok Suvarnabhumi - CMB Colombo Bandaranaike Intl

BKKCMB

Bangkok Suvarnabhumi

Wed 19/8

18:45-21:50

2 stops28h 35m

Colombo Bandaranaike Intl

Thu 3/9

23:00-12:45

1 stop12h 15m

฿16,603
Fastest return journey

BangkokColombo

BKK Bangkok Suvarnabhumi - CMB Colombo Bandaranaike Intl

BKKCMB

Bangkok Suvarnabhumi

Sun 11/10

07:45-09:35

Nonstop3h 20m

Colombo Bandaranaike Intl

Wed 14/10

09:40-19:20

1 stop8h 10m

฿16,703

BangkokColombo

DMK Bangkok Don Mueang Intl - CMB Colombo Bandaranaike Intl

DMKCMB

Bangkok Don Mueang Intl

Fri 11/9

18:00-20:45

1 stop28h 15m

Colombo Bandaranaike Intl

Fri 30/10

21:45-11:05

1 stop11h 50m

฿16,802

BangkokColombo

DMK Bangkok Don Mueang Intl - CMB Colombo Bandaranaike Intl

DMKCMB

Bangkok Don Mueang Intl

Mon 14/9

13:45-20:45

1 stop8h 30m

Colombo Bandaranaike Intl

Sat 24/10

21:45-12:40

1 stop13h 25m

฿17,134

BangkokColombo

DMK Bangkok Don Mueang Intl - CMB Colombo Bandaranaike Intl

DMKCMB

Bangkok Don Mueang Intl

Wed 19/8

11:50-20:45

1 stop10h 25m

Colombo Bandaranaike Intl

Sat 5/9

21:45-16:40

1 stop17h 25m

฿17,863

BangkokColombo

BKK Bangkok Suvarnabhumi - CMB Colombo Bandaranaike Intl

BKKCMB

Bangkok Suvarnabhumi

Tue 12/1

18:35-22:05

2 stops53h 00m

Colombo Bandaranaike Intl

Tue 26/1

23:05-10:45

1 stop10h 10m

฿18,227

BangkokColombo

BKK Bangkok Suvarnabhumi - CMB Colombo Bandaranaike Intl

BKKCMB

Bangkok Suvarnabhumi

Fri 25/9

18:45-21:50

2 stops28h 35m

Colombo Bandaranaike Intl

Thu 1/10

23:00-14:45

1 stop14h 15m

฿18,559

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 39 resultsSorted by cheapest first
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Best time to book a flight from Bangkok to Sri Lanka

Have a flexible travel schedule? Discover the best time to fly to Sri Lanka from Bangkok with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Bangkok to Sri Lanka

What is the cheapest month to book a flight from Bangkok to Sri Lanka?

Currently, November is the cheapest month in which you can book a flight from Bangkok to Sri Lanka (average of ฿9,544). Flying from Bangkok to Sri Lanka in May is currently the most expensive (average of ฿14,449). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BKK to LK?

Find hourly flight availability from Bangkok to Sri Lanka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 August 2026.

It’s optimal to fly from Bangkok to Sri Lanka in the evening. By choosing this option you can save up to 70% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from Bangkok to Sri Lanka

Explore weekly flight availability from Bangkok to Sri Lanka. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 6 August 2026.

The most flights from TH1 to LK0 are scheduled on a Wednesday (14 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (7 on average).

How often are flights from Bangkok to Sri Lanka delayed?

About 16% of weekly flights between Bangkok and Sri Lanka have experienced delays in the past year, with the average delay time being 105 minutes.

What is the most punctual flight time for Bangkok to Sri Lanka flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Bangkok to Sri Lanka flights?

Over the past year, Thai Airways have had the lowest number of delays on this route, with just 7% of flights being delayed.

How far ahead should I book a flight from Bangkok to Sri Lanka?

Booking 17 days in advance of your planned departure date is, on average, the best time to get cheap flights from Bangkok to Sri Lanka. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Sri Lanka

Get insights into the airlines that provide service to Sri Lanka. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sri Lanka. Reviews last updated 6 August 2026.
See what other customers who have flown with Thai Airways,Thai AirAsia, andศรีลังกาแอร์ไลน์ from Bangkok to Sri Lanka have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.9
Good
413 reviews
Check prices

Food

7.5

Overall

7.9

Entertainment

6.9

Comfort

7.7

Crew

8.4

Boarding

8.0

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Thai Airways
7.9
Good
413 reviews
Thai Airways
7.9
Good
413 reviews
Check prices

Food

7.5

Overall

7.9

Entertainment

6.9

Comfort

7.7

Crew

8.4

Boarding

8.0

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Thai AirAsia
7.4
Good
246 reviews
Thai Airways
7.9
Good
413 reviews
Check prices

Food

7.5

Overall

7.9

Entertainment

6.9

Comfort

7.7

Crew

8.4

Boarding

8.0

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
ศรีลังกาแอร์ไลน์
6.8
Okay
86 reviews
Thai Airways
7.9
Good
413 reviews
Check prices

Food

7.5

Overall

7.9

Entertainment

6.9

Comfort

7.7

Crew

8.4

Boarding

8.0

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing

Related info for your journey

Find useful and relevant information for your journey from Bangkok to Sri Lanka. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Bangkok to Sri Lanka?

    There are many flights that can get you from Bangkok to Sri Lanka in 20h 15m. Fly via Air India, VietJet Air, or Batik Air to get the fastest option. The distance from Bangkok to Sri Lanka is about 2391 km. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Bangkok to Sri Lanka one-way?

    One-way options have recently been found by users for as low as ฿3,404 on Thai AirAsia. Other airlines that offer cheap prices include ศรีลังกาแอร์ไลน์ from ฿5,362 and Thai Airways from ฿6,403 one-way.

  • What are the most popular routes from Bangkok to Sri Lanka?

    Most travellers choose Bangkok Suvarnabhumi - Colombo Bandaranaike Intl, Bangkok Don Mueang Intl - Colombo Bandaranaike Intl or Bangkok Suvarnabhumi - Sigiriya when deciding on the best route from Bangkok to Sri Lanka.

  • What are the most reliable airlines from Bangkok to Sri Lanka?

    Before booking your flight to Sri Lanka from Bangkok, have a look at the most reliable airlines to get you to your destination on time: Japan Airlines (98%), แอร์แคนาดา (93%), Thai Airways( 93%).

  • What are the cheapest flights from Bangkok to Sri Lanka?

    On average you can expect to pay ฿12,082 for a flight from Bangkok to Sri Lanka. The cheapest flight overall is ฿6,933 while the most popular route, (Bangkok Suvarnabhumi - Colombo Bandaranaike Intl) is currently priced at ฿10,804.

  • Can I find deals for flights from Bangkok to Sri Lanka that include hotel bookings?

    Yes. In addition to deals on Bangkok to Sri Lanka flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Bangkok to Sri Lanka?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to Sri Lanka.

  • Can I find deals for business class flights from Bangkok to Sri Lanka?

    Yes. Cheapflights offers flight deals from Bangkok to Sri Lanka by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Bangkok to Sri Lanka?

    Currently, November is the cheapest month in which you can book a flight from Bangkok to Sri Lanka (average of ฿9,544). Flying from Bangkok to Sri Lanka in May is currently the most expensive (average of ฿14,449). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Bangkok to Sri Lanka

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Phuket City flights
Chiang Mai to Krabi flights
Chiang Mai to Ko Samui flights
Phuket City to Ko Samui flights

Top 3 airlines flying from Bangkok to Sri Lanka

Discover the top 3 airlines that operate flights from Bangkok to Sri Lanka. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 6 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsiaCheapest฿8,175Average฿10,829FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
ศรีลังกาแอร์ไลน์Cheapest฿11,250Average฿14,219FlexibilityNo cancel feeOn-time68%
Search ศรีลังกาแอร์ไลน์ flights
Thai AirwaysCheapest฿12,943Average฿14,438FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Bangkok to Sri Lanka?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Sri Lanka from Bangkok today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Bangkok to Sri Lanka?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Bangkok to Sri Lanka for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Bangkok to Sri Lanka with no change fees?

Certainly. Search results for flights to Sri Lanka from Bangkok shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Bangkok to Sri Lanka become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sri Lanka from Bangkok today and book when prices fit your budget.

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