$1,745+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CMB
Jun 12 — Jun 191
Round-trip
1 adult, Economy
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Cheapest
Last-minute
Cheapest flights from St. Louis to Sri LankaExplore 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 May 13, 2026.
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 May 13, 2026.
This BusinessClass deal was found by Cheapflights users on 5/9. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:05 am
STL
- CMB
2 stops30h 10m
Cathay Pacific
Sun 6/1412:50 am
CMB
- STL
2 stops31h 17m
Cathay Pacific
Deal found 5/9![Cathay Pacific logo]()
$1,745
This Travelocity deal was found by Cheapflights users on 5/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:05 am
STL
- CMB
2 stops28h 35m
Multiple Airlines
Mon 6/152:05 am
CMB
- STL
2 stops32h 24m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,824
This Ovago deal was found by Cheapflights users on 5/9. 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.
Sun 5/177:05 am
STL
- CMB
2 stops28h 35m
Multiple Airlines
Mon 6/158:35 pm
CMB
- STL
3 stops37h 54m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,868
Last-minute flights from St. Louis to Sri LankaDiscover last-minute flight deals from St. Louis to Sri Lanka. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Sri Lanka. Data last updated May 13, 2026 and is based on user searches.
This Travelocity deal was found by Cheapflights users on 5/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:05 am
STL
- CMB
2 stops28h 35m
Multiple Airlines
Mon 6/152:05 am
CMB
- STL
2 stops32h 24m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,824
This BusinessClass deal was found by Cheapflights users on 5/9. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:05 am
STL
- CMB
2 stops30h 10m
Cathay Pacific
Sun 6/1412:50 am
CMB
- STL
2 stops31h 17m
Cathay Pacific
Deal found 5/9![Cathay Pacific logo]()
$1,745
This Ovago deal was found by Cheapflights users on 5/9. 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.
Sun 5/177:05 am
STL
- CMB
2 stops28h 35m
Multiple Airlines
Mon 6/158:35 pm
CMB
- STL
3 stops37h 54m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,868
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 May 13, 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.
Crew
7.9
Comfort
7.3
Overall
7.4
Entertainment
7.3
Food
7.3
Boarding
7.5
Reviews
1 / 20
6.0
GoodChris,Jul 2025
DFW - DOH
Crew
7.9
Comfort
7.3
Overall
7.4
Entertainment
7.3
Food
7.3
Boarding
7.5
Reviews
1 / 20
6.0
GoodChris,Jul 2025
DFW - 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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St. Louis to 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 2,558,603 searches. Data last updated May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,393 | Average$1,579 | FlexibilityNo cancel fee | On-time68% |