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$844+ Cheap flights from St. Louis (STL) to Sri Lanka

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CMB
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from St. Louis to Sri Lanka

Keep the following information in mind while searching for St. Louis to Sri Lanka flight deals. Data was last updated July 30, 2025.

Round-trip from

$1,232
(Etihad Airways)

One-way from

$844
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$1,610
From Lambert-St Louis to Sri Lanka
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One-way flight from Lambert-St Louis to Sri Lanka
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Highest demand for flights based on searches. 9% potential increase in price ($149 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($83 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from St. Louis to Sri Lanka

Cheapest flights from St. Louis to Sri Lanka
Explore the most affordable flight options available from St. Louis to Sri Lanka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Etihad Airways deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:00 amSTL - CMB
2 stops28h 05mMultiple Airlines
Tue 9/910:05 amCMB - STL
2 stops46h 18mMultiple Airlines
Deal found 7/30$1,232
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/287:23 amSTL - CMB
2 stops26h 42mEtihad Airways
Thu 9/410:05 amCMB - STL
2 stops46h 30mEtihad Airways
Deal found 7/29$1,450
This Ovago deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2812:20 pmSTL - CMB
2 stops28h 15mQatar Airways
Wed 9/33:35 amCMB - STL
2 stops30h 54mQatar Airways
Deal found 7/29$1,451

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis 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 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from St. Louis to Sri Lanka that are best for you.

Fly from

St. Louis

Fly to

Sri Lanka

Route

Depart

Return

Price

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Mon 9/1

6:00 am-8:35 pm

2 stops28h 05m

Colombo Bandaranaike Intl

Tue 9/9

10:05 am-9:53 pm

2 stops46h 18m

$1,232

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Thu 8/28

7:23 am-8:35 pm

2 stops26h 42m

Colombo Bandaranaike Intl

Thu 9/4

10:05 am-10:05 pm

2 stops46h 30m

$1,450

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Thu 8/28

12:20 pm-3:05 am

2 stops28h 15m

Colombo Bandaranaike Intl

Wed 9/3

3:35 am-11:59 pm

2 stops30h 54m

$1,451

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Tue 8/12

6:00 am-9:40 am

2 stops41h 10m

$844

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

Tue 8/12

3:20 pm-6:30 pm

3 stops40h 40m

$1,281

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from St. Louis to Sri Lanka

Have a flexible travel schedule? Discover the best time to fly to Sri Lanka from St. Louis with our price prediction graph.
Estimated round-trip 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 St. Louis to Sri Lanka

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

Find hourly flight availability from St. Louis 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 July 30, 2025.

When flying from St. Louis to Sri Lanka, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 30, 2025.
See what other customers who have flown with Emirates, Qatar Airways, and Etihad Airways from St. Louis 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.
Emirates
8.1
Very good
3,299 reviews

Boarding

8.1

Comfort

8.0

Food

7.9

Entertainment

8.2

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,299 reviews
Emirates
8.1
Very good
3,299 reviews

Boarding

8.1

Comfort

8.0

Food

7.9

Entertainment

8.2

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qatar Airways
7.4
Good
3,607 reviews
Emirates
8.1
Very good
3,299 reviews

Boarding

8.1

Comfort

8.0

Food

7.9

Entertainment

8.2

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Etihad Airways
7.4
Good
1,230 reviews
Emirates
8.1
Very good
3,299 reviews

Boarding

8.1

Comfort

8.0

Food

7.9

Entertainment

8.2

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

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

  • What airport do you fly from for flights from St. Louis to Sri Lanka?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Sri Lanka.

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

    Yes. In addition to deals on St. Louis to Sri Lanka flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Sri Lanka?

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

  • Can I find deals for business class flights from St. Louis to Sri Lanka?

    Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Sri Lanka?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Sri Lanka (average of $1,047). Flying from St. Louis to Sri Lanka in December is currently the most expensive (average of $1,786). 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

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Top 2 airlines flying from St. Louis to Sri Lanka

Discover the top 2 airlines that operate flights from St. Louis 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 2,558,603 searches. Data last updated July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$946Average$1,209FlexibilityNo cancel feeOn-time71%
Qatar AirwaysCheapest$1,156Average$1,492FlexibilityNo cancel feeOn-time68%

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