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Cheap flights from St. Louis to Sri Lanka from $599

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Sri Lanka departing on 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Sri Lanka

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qatar Airways Logo
6:35 am - 9:00 amSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
39h 55m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Qatar Airways Logo
4:35 am - 11:59 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
29h 54m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,344Qatar Airways
Mon, Sep 7 - Mon, Sep 14
Qatar Airways Logo
6:29 am - 2:05 amSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
33h 06m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Qatar Airways Logo
8:20 pm - 11:59 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
38h 09m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,401Qatar Airways
Sun, Sep 27 - Thu, Oct 1
Multiple Airlines Logo
1:06 pm - 2:50 pmSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
38h 14m2 stops Chicago O'Hare Intl Abu Dhabi Zayed Intl
Multiple Airlines Logo
9:55 am - 6:34 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
44h 09m2 stops Abu Dhabi Zayed Intl Charlotte Douglas
$1,455Multiple Airlines
Fri, Jan 15 - Wed, Jan 27
Etihad Airways Logo
10:01 am - 8:15 pmSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
22h 44m2 stops Boston Logan Intl Abu Dhabi Zayed Intl
Etihad Airways Logo
4:00 am - 6:34 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
50h 04m2 stops Abu Dhabi Zayed Intl Charlotte Douglas
$1,465Etihad Airways
Fri, Jan 1 - Tue, Jan 5
Multiple Airlines Logo
3:24 pm - 3:55 pmSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
61h 01m2 stops Seattle/Tacoma Intl Dubai Intl
Multiple Airlines Logo
8:15 pm - 3:26 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
30h 41m3 stops Male Dubai Intl Toronto Pearson Intl
$1,782Multiple Airlines
Fri, Jan 15 - Wed, Jan 27
Multiple Airlines Logo
6:35 am - 6:30 pmSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
49h 25m3 stops Seattle/Tacoma Intl Dubai Intl Male
Multiple Airlines Logo
8:35 pm - 2:21 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
52h 16m3 stops Male Dubai Intl Seattle/Tacoma Intl
$1,784Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
Multiple Airlines Logo
8:55 am - 10:10 pmSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
26h 45m2 stops Toronto Pearson Intl Dubai Intl
Multiple Airlines Logo
8:35 pm - 2:21 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
52h 16m3 stops Male Dubai Intl Seattle/Tacoma Intl
$1,786Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
Multiple Airlines Logo
4:05 pm - 6:25 pmSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
38h 50m3 stops Toronto Pearson Intl Dubai Intl Male
Multiple Airlines Logo
8:15 pm - 3:26 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
54h 41m3 stops Male Dubai Intl Toronto Pearson Intl
$1,861Multiple Airlines
Fri, Jan 15 - Wed, Jan 27
Multiple Airlines Logo
3:40 pm - 11:10 amSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
32h 00m2 stops Frankfurt am Main Chennai
Multiple Airlines Logo
8:15 pm - 1:45 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
53h 00m3 stops Male Dubai Intl Frankfurt am Main
$1,978Multiple Airlines
Fri, Jan 1 - Wed, Jan 6
Emirates Logo
3:11 pm - 10:15 amSTL  Lambert-St Louis-CMB Colombo Bandaranaike Intl
32h 34m3 stops Chicago O'Hare Intl Dubai Intl Male
Emirates Logo
2:55 am - 9:21 pmCMB  Colombo Bandaranaike Intl-STL Lambert-St Louis
28h 56m2 stops Dubai Intl Chicago O'Hare Intl
$2,457Emirates
Sun, Sep 27 - Wed, Sep 30

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Emirates flights from St. Louis to Sri Lanka

Our best Emirates deals on St. Louis to Sri Lanka flight tickets
Emirates
Sep 27
STL3:11 pmLambert-St Louis
32h 34m
3 stops
CMB10:15 amColombo Bandaranaike Intl
Sep 30
CMB2:55 amColombo Bandaranaike Intl
28h 56m
2 stops
STL9:21 pmLambert-St Louis
$2,457
Emirates
Sep 27
STL3:11 pmLambert-St Louis
32h 34m
3 stops
CMB10:15 amColombo Bandaranaike Intl
Oct 1
CMB8:35 pmColombo Bandaranaike Intl
36h 25m
3 stops
STL10:30 pmLambert-St Louis
$2,462
Emirates
Sep 27
STL3:11 pmLambert-St Louis
32h 34m
3 stops
CMB10:15 amColombo Bandaranaike Intl
Oct 1
CMB8:35 pmColombo Bandaranaike Intl
35h 16m
3 stops
STL9:21 pmLambert-St Louis
$2,521

Qatar Airways flights from St. Louis to Sri Lanka

Our best Qatar Airways deals on St. Louis to Sri Lanka flight tickets
Qatar Airways
Sep 7
STL6:35 amLambert-St Louis
39h 55m
2 stops
CMB9:00 amColombo Bandaranaike Intl
Sep 14
CMB4:35 amColombo Bandaranaike Intl
29h 54m
2 stops
STL11:59 pmLambert-St Louis
$1,344
Qatar Airways
Sep 27
STL6:29 amLambert-St Louis
33h 06m
2 stops
CMB2:05 amColombo Bandaranaike Intl
Oct 1
CMB8:20 pmColombo Bandaranaike Intl
38h 09m
2 stops
STL11:59 pmLambert-St Louis
$1,401

momondo 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, momondo users made 832,500 searches. Data last updated August 11, 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

Price

Cheapest round-trip

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Mon 9/7

6:35 am-9:00 am

2 stops39h 55m

Colombo Bandaranaike Intl

Mon 9/14

4:35 am-11:59 pm

2 stops29h 54m

$1,344

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Sun 9/27

6:29 am-2:05 am

2 stops33h 06m

Colombo Bandaranaike Intl

Thu 10/1

8:20 pm-11:59 pm

2 stops38h 09m

$1,401

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Fri 1/15

1:06 pm-2:50 pm

2 stops38h 14m

Colombo Bandaranaike Intl

Wed 1/27

9:55 am-6:34 pm

2 stops44h 09m

$1,455

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Fri 1/1

10:01 am-8:15 pm

2 stops22h 44m

Colombo Bandaranaike Intl

Tue 1/5

4:00 am-6:34 pm

2 stops50h 04m

$1,465

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Fri 1/15

3:24 pm-3:55 pm

2 stops61h 01m

Colombo Bandaranaike Intl

Wed 1/27

8:15 pm-3:26 pm

3 stops30h 41m

$1,782

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Mon 9/7

6:35 am-6:30 pm

3 stops49h 25m

Colombo Bandaranaike Intl

Mon 9/14

8:35 pm-2:21 pm

3 stops52h 16m

$1,784

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Mon 9/7

8:55 am-10:10 pm

2 stops26h 45m

Colombo Bandaranaike Intl

Mon 9/14

8:35 pm-2:21 pm

3 stops52h 16m

$1,786

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Fri 1/15

4:05 pm-6:25 pm

3 stops38h 50m

Colombo Bandaranaike Intl

Wed 1/27

8:15 pm-3:26 pm

3 stops54h 41m

$1,861

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Fri 1/1

3:40 pm-11:10 am

2 stops32h 00m

Colombo Bandaranaike Intl

Wed 1/6

8:15 pm-1:45 pm

3 stops53h 00m

$1,978
Quickest round-trip

St. LouisColombo

STL Lambert-St Louis - CMB Colombo Bandaranaike Intl

STLCMB

Lambert-St Louis

Sun 9/27

3:11 pm-10:15 am

3 stops32h 34m

Colombo Bandaranaike Intl

Wed 9/30

2:55 am-9:21 pm

2 stops28h 56m

$2,457

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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Cheap St. Louis to Sri Lanka flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Sri Lanka

Fastest flight time

35h 20m

Direct flights

None
The fastest flight from St. Louis to Sri Lanka takes 35h 20m
There are no direct flights from St. Louis to Sri Lanka. There are no popular flight routes from St. Louis to Sri Lanka.
Search flight deals

Frequently asked questions about flying from St. Louis to Sri Lanka

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Sri Lanka?

    Prices for flights from Lambert-St Louis Airport to Sri Lanka were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Sri Lanka?

  • How old do you have to be to fly from Lambert-St Louis Airport to Sri Lanka?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Sri Lanka.

  • What documentation or ID do you need to fly to Sri Lanka?

    The travel and health documents you'll need for your trip to Sri Lanka may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sri Lanka. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Sri Lanka

Compare and see reviews for airlines that fly from St. Louis to Sri Lanka with momondo
Airline
Rating
Free Cancellation
Price
Qatar AirwaysPriceFrom $1,166Free CancellationRating
7.4
3,740 reviews
Search Qatar Airways flights

Frequently asked questions about flying from St. Louis to Sri Lanka

  • How do I get Price Alerts for flights from St. Louis to Sri Lanka?

    Price Alerts will notify you by email when the price for flights to Sri Lanka from St. Louis decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from St. Louis to Sri Lanka with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Sri Lanka?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Sri Lanka for you.

Can I find flights from St. Louis to Sri Lanka with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sri Lanka from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Sri Lanka?

Once you have performed a search for St. Louis to Sri Lanka flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Sri Lanka right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Sri Lanka from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Sri Lanka trip

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