$688 Find Cheap Flights from St. Louis to Sri Lanka

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Sri Lanka departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Cheap Flights from St. Louis to Sri Lanka

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Sri Lanka that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Sri Lanka

Mon, Aug 4 - Wed, Aug 20
Qatar Airways Logo
7:38 pm - 9:00 amSTL-CMB
26h 52m2 stops
Qatar Airways Logo
8:20 pm - 7:29 pmCMB-STL
33h 39m2 stops
$1,493Qatar Airways
Find Deal
Mon, Aug 4 - Tue, Aug 19
Qatar Airways Logo
7:38 pm - 9:00 amSTL-CMB
26h 52m2 stops
Qatar Airways Logo
3:35 am - 11:09 pmCMB-STL
30h 04m2 stops
$1,502Qatar Airways
Find Deal
Sat, Dec 13 - Fri, Jan 16
Air Canada Logo
4:05 pm - 5:25 amSTL-CMB
25h 50m2 stops
Air Canada Logo
9:55 am - 3:29 pmCMB-STL
41h 04m2 stops
$1,586Air Canada
Find Deal
Mon, Dec 15 - Fri, Jan 16
 Logo
4:05 pm - 12:30 pmSTL-CMB
32h 55m2 stops
 Logo
9:55 am - 3:29 pmCMB-STL
41h 04m2 stops
$1,588
Find Deal
Sun, Dec 14 - Fri, Jan 16
Air Canada Logo
4:05 pm - 12:30 pmSTL-CMB
32h 55m2 stops
Air Canada Logo
9:55 am - 3:29 pmCMB-STL
41h 04m2 stops
$1,599Air Canada
Find Deal
Mon, Dec 15 - Fri, Jan 16
 Logo
4:05 pm - 6:25 pmSTL-CMB
38h 50m3 stops
 Logo
9:55 am - 3:29 pmCMB-STL
41h 04m2 stops
$1,611
Find Deal
Sat, Dec 13 - Sat, Jan 17
Air Canada Logo
4:05 pm - 5:25 amSTL-CMB
25h 50m2 stops
Air Canada Logo
12:50 pm - 3:29 pmCMB-STL
62h 09m2 stops
$1,626Air Canada
Find Deal
Mon, Dec 15 - Sat, Jan 17
Air Canada Logo
4:05 pm - 12:30 pmSTL-CMB
32h 55m2 stops
Air Canada Logo
12:50 pm - 3:29 pmCMB-STL
62h 09m2 stops
$1,638Air Canada
Find Deal
Mon, Aug 4 - Wed, Aug 20
Emirates Logo
3:20 pm - 6:30 pmSTL-CMB
40h 40m3 stops
Emirates Logo
8:35 pm - 10:08 pmCMB-STL
36h 03m3 stops
$1,990Emirates
Find Deal
Tue, Dec 16 - Thu, Jan 15
Emirates Logo
3:15 pm - 9:30 amSTL-CMB
30h 45m3 stops
Emirates Logo
2:45 am - 10:06 pmCMB-STL
30h 51m2 stops
$2,901Emirates
Find Deal
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KAYAK's insights & trends for St. Louis to Sri Lanka flights

Get data-powered insights and trends into flights from St. Louis to Sri Lanka to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Sri Lanka?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Sri Lanka, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Sri Lanka is October, when tickets cost $1,118 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $2,305 and $1,880 respectively.

What’s the cheapest day of the week to fly from St. Louis to Sri Lanka?

The average price of all round-trip flights from St. Louis to Sri Lanka clicked on KAYAK for each day over the last 12 months.

When flying from St. Louis to Sri Lanka, you should consider leaving on a Thursday and avoid Saturdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$688
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from St. Louis to Colombo

FAQs - booking Sri Lanka flights

  • How does KAYAK find such low prices on flights from St. Louis to Sri Lanka?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Sri Lanka.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Sri Lanka?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Sri Lanka is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Sri Lanka?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Sri Lanka with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Sri Lanka?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Sri Lanka up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Sri Lanka?

    The cheapest time of day to fly to Sri Lanka is generally in the morning, when round-trip flights cost $1,409 on average. Morning departures are around 3% cheaper than evening flights, on average. The most expensive time of day to fly to Sri Lanka is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,495.

Reviews of the top airlines flying from St. Louis to Sri Lanka

 
Need help choosing which airline to fly with from St. Louis to Sri Lanka? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Qatar AirwaysOverall score based on 3596 reviews
7.9Crew
7.3Food
7.5Boarding
7.4Comfort
7.4Entertainment
Airline reviews

The flight was smooth Thank God but the delays and changing gates for 3-4 times made me so tired of walking back and forth with heavy bags I thought I was going to pass out with heavy headaches but Thank God finally found the final gate and home safe. These delays happen anytime for important reasons so just be patient when you come across these situations.

10.0 ExcellentAnonymous, Jun 2025LAX - LAS
Read more Qatar Airways reviews

The flight was smooth Thank God but the delays and changing gates for 3-4 times made me so tired of walking back and forth with heavy bags I thought I was going to pass out with heavy headaches but Thank God finally found the final gate and home safe. These delays happen anytime for important reasons so just be patient when you come across these situations.

This trip was the most comfortable one I have ever experienced, the team was excellent and very helpful. I am so glad I picked Qatar Airways.

All the crew members were too slow and rude. Most of the times the registers were empty, while hundreds of customers were waiting in line, and it was impossible to get a supervisor. Despite being in line on time, I missed my freight, plus a some customers who were ahead and behind me.

Well organized boarding, efficient and on time. Nice crew on the plane. Thank you!

The Qatar Airways staff pre-boarding and also on the flight from Dallas to Doha were incredibly mediocre and arrogant. Consider retraining these individuals Other flights were ok.

My experience with Qatar airway was very unsatisfactory. They lost my child’s stroller and I was told they found it and will send it to the hotel which was a lie. I had to go back to the airport baggage claim and pick up myself after trying to contact them many times!. There was a lack professional and communication. I am very disappointed in Qatar airway and will not be recommending them to friends and family nor will I be flying with them in the future.

Worst air experience in whole life . Boarding and checking was hassle as they did 3 times. Crew team was clueless about passengers need. Despite of passengers raising hand , they were resetting the program

The food is not good and also if you ask crew to bring something they say ok I will bring but you will never get it. Please they should listen good to passengers

No difference between US airline and Qatar. Both cramp as many people. The airline seems to change planes without notice choice is seating when making reservations online doesn’t match the plane a passenger is on. Especially paying extra. Nothing special No different than US carriers.

Did not like anything. Seats were crammed, leg space was minimal and food was terrible. This was the first time traveling overseas in American Airlines and was the worst experience ever. Have learned a lesson to never travel in American Airlines.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Flight was delayed again and again ultimately almost three hours getting us to our location at close to midnight by the time we got in and out of airport to destination. I had taken time off work to enjoy an evening at destination and that was now wasted

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The flight delay in Dallas created a domino effect that impacted all of the connecting flights. It also increased the number of connections. I missed my flight from Casablanca to Marrakech because of the tight turnaround when landing in Casablanca. . CMN airport was understaffed. Only one person could help while other employees were just watching him. It was an extremely frustrating situation. People were crying and slamming their palms on the counter when speaking to the customer service provider, Allabough (man’s name?). Allabough couldn’t change my flight in the system. simultaneously, I was on the call with America. Airlines customer service rep named Solomon that said he couldn’t change it either. So, I took a ONYA voyages train to from Casablanca to Marrakech to get there on Friday June 26. This was unpredictable trip.

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

Everything you need to know for your flight from St. Louis to Sri Lanka

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