$857+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CMB
Nov 29 — Dec 61
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 October 30, 2025.
Round-trip from | $1,167 (Cathay Pacific) |
|---|---|
One-way from | $857 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Find flight deals from St. Louis to Sri Lanka
Best flights from St. Louis to Sri LankaDiscover 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 October 30, 2025.
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 October 30, 2025.
This Cathay Pacific deal was found by Cheapflights users on 10/29. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/137:04 amSTL - CMB
2 stops28h 56mMultiple Airlines
Wed 2/412:45 amCMB - STL
2 stops32h 00mMultiple Airlines
Deal found 10/29![Multiple Airlines logo]()
$1,167
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 October 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
Tue 1/13
7:04 am-11:30 pm
2 stops28h 56m
Colombo Bandaranaike Intl
Wed 2/4
12:45 am-9:15 pm
2 stops32h 00m
$1,167
St. LouisColombo
STL - CMB
STLCMB
Lambert-St Louis
Mon 11/3
12:09 pm-7:55 pm
3 stops44h 16m
$857
St. LouisColombo
STL - CMB
STLCMB
Lambert-St Louis
Mon 11/3
7:00 am-2:45 am
2 stops32h 15m
$960
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 October 30, 2025.
When flying from St. Louis to Sri Lanka, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 6% versus a flight at noon.
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 October 30, 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.
Overall
7.4
Boarding
7.5
Food
7.3
Crew
7.9
Entertainment
7.4
Comfort
7.4
Reviews
1 / 20
6.0
GoodChris,Jul 2025
DFW - DOH
Overall
7.4
Boarding
7.5
Food
7.3
Crew
7.9
Entertainment
7.4
Comfort
7.4
Reviews
1 / 20
6.0
GoodChris,Jul 2025
DFW - DOH
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.
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Alternative routes for St. Louis to Sri Lanka
See prices for flight routes from nearby airports that may be better suited for you.
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 October 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,179 | Average$1,492 | FlexibilityNo cancel fee | On-time68% |