$1,524+ 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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CMB
Dec 10 — Dec 171
Round-trip
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
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Best
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 November 10, 2026.
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 November 10, 2026.
This Qatar Airways deal was found by Cheapflights users on 11/7. 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.
Mon 3/222:21 pm -
2 stops31h 54m
Thu 3/254:15 am -
2 stops25h 47m
Deal found 11/7![Qatar Airways logo]()
$1,524
This Emirates deal was found by Cheapflights users on 11/5. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/223:21 pm -
2 stops30h 24m
Thu 3/258:15 pm -
3 stops35h 28m
Deal found 11/5![Emirates logo]()
$4,062
Find 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 November 10, 2026.
Round-trip from | $1,524 (Qatar Airways) |
|---|
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 7,457,451 searches. Data last updated November 10, 2026.
Use the filters below to find and compare flights from St. Louis to Sri Lanka that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisColombo
STL Lambert-St Louis - CMB Colombo Bandaranaike Intl
STLCMB
Lambert-St Louis
Mon 3/22
2:21 pm-8:45 am
2 stops31h 54m
Colombo Bandaranaike Intl
Thu 3/25
4:15 am-7:32 pm
2 stops25h 47m
$1,524
St. LouisColombo
STL Lambert-St Louis - CMB Colombo Bandaranaike Intl
STLCMB
Lambert-St Louis
Mon 3/22
3:21 pm-8:15 am
2 stops30h 24m
Colombo Bandaranaike Intl
Thu 3/25
8:15 pm-9:13 pm
3 stops35h 28m
$4,062
Sorted by cheapest first
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.
STL-CMB
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
STL-LK0
STL-CMB
No data available for this route at this time. Please check back soon.
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 November 10, 2026.
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.
Entertainment
7.3
Food
7.3
Boarding
7.5
Overall
7.4
Crew
7.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
IAH - DOH
Entertainment
7.3
Food
7.3
Boarding
7.5
Overall
7.4
Crew
7.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
IAH - DOH
Related info for your journey
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Complete your trip
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St. Louis and Sri Lanka flights
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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 7,457,451 searches. Data last updated November 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,166 | Average$1,443 | FlexibilityNo cancel fee | On-time68% |