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$1,410+ Cheap flights from St. Louis (STL) to Sri Lanka

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CMB
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
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 septiembre 15, 2025.

Round-trip from

$1,410
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$1,489
From Lambert-St Louis to Sri Lanka
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($71 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Sri Lanka

Best flights from St. Louis to Sri Lanka
Discover carefully curated flight deals from St. Louis to Sri Lanka that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated septiembre 15, 2025.

This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/102:40 pmSTL - CMB
2 stops24h 35mQatar Airways
mar. 3/37:30 pmCMB - STL
2 stops39h 56mQatar Airways
Deal found 9/14$1,410
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/104:05 pmSTL - CMB
3 stops38h 50mMultiple Airlines
mar. 3/39:55 amCMB - STL
2 stops41h 04mMultiple Airlines
Deal found 9/14$1,558
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/16:44 pmSTL - CMB
2 stops41h 16mCathay Pacific
mié. 1/2112:45 amCMB - STL
2 stops33h 12mCathay Pacific
Deal found 9/15$1,607
This Qatar Airways deal was found by Cheapflights users on 9/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/57:00 amSTL - CMB
2 stops38h 15mQatar Airways
lun. 3/94:15 amCMB - STL
2 stops30h 11mQatar Airways
Deal found 9/13$1,410
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/12:50 pmSTL - CMB
2 stops24h 25mQatar Airways
jue. 1/227:30 pmCMB - STL
2 stops30h 08mQatar Airways
Deal found 9/15$1,745

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 septiembre 15, 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

mar. 2/10

2:40 pm-2:45 am

2 stops24h 35m

Colombo Bandaranaike Intl

mar. 3/3

7:30 pm-11:56 pm

2 stops39h 56m

$1,410

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

jue. 3/5

7:00 am-8:45 am

2 stops38h 15m

Colombo Bandaranaike Intl

lun. 3/9

4:15 am-11:56 pm

2 stops30h 11m

$1,410

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

mar. 2/10

4:05 pm-6:25 pm

3 stops38h 50m

Colombo Bandaranaike Intl

mar. 3/3

9:55 am-3:29 pm

2 stops41h 04m

$1,558

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

jue. 1/1

6:44 pm-11:30 pm

2 stops41h 16m

Colombo Bandaranaike Intl

mié. 1/21

12:45 am-10:27 pm

2 stops33h 12m

$1,607

St. LouisColombo

STL - CMB

STLCMB

Lambert-St Louis

jue. 1/1

2:50 pm-2:45 am

2 stops24h 25m

Colombo Bandaranaike Intl

jue. 1/22

7:30 pm-2:08 pm

2 stops30h 08m

$1,745

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 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 $1,028). Flying from St. Louis to Sri Lanka in December is currently the most expensive (average of $1,732). 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 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 septiembre 15, 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 septiembre 15, 2025.
See what other customers who have flown with Qatar 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.
Qatar Airways
7.4
Good
3,624 reviews

Comfort

7.4

Food

7.3

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,624 reviews
Qatar Airways
7.4
Good
3,624 reviews

Comfort

7.4

Food

7.3

Overall

7.4

Boarding

7.5

Crew

7.9

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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.

  • How long is the flight from St. Louis to Sri Lanka?

    A quick flight from St. Louis to Sri Lanka can take about 24h 35m. Qatar Airways provides one of the quickest options available for as low as $1,410. The distance from St. Louis to Sri Lanka is about 9196 mi.

  • 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 $1,028). Flying from St. Louis to Sri Lanka in December is currently the most expensive (average of $1,732). 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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Alternative routes for St. Louis to Sri Lanka

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Top airline flying from St. Louis to Sri Lanka

Discover the top airline 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,171Average$1,492FlexibilityNo cancel feeOn-time68%

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