$800 Cheap Flights from Colombo (CMB) to St. Louis (STL)

View $800 flight on Thu, Oct 16, 2025Opens in a new window

Popular airlines from Bandaranaike Intl. Airport (CMB) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Colombo to St. Louis (CMB-STL)

Prices were available within the past 7 days and start at $800 for one-way flights and $1,058 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Emirates
Mon, Apr 27 - Tue, Jun 23
CMB
Colombo
STL
St. Louis
$1,058 Roundtrip, found 5 hours ago
$1,058
Roundtrip
found 5 hours ago
Select Emirates flight, departing Mon, Apr 27 from Colombo to St. Louis, returning Tue, Jun 23, priced at $1,058 found 5 hours ago
Emirates
Mon, Apr 27 - Tue, Jun 23
CMB
Colombo
STL
St. Louis
$1,073 Roundtrip, found 5 hours ago
$1,073
Roundtrip
found 5 hours ago
Select Emirates flight, departing Mon, Apr 27 from Colombo to St. Louis, returning Tue, Jun 23, priced at $1,073 found 5 hours ago
Air Canada
Sat, Apr 25 - Fri, Jun 19
CMB
Colombo
STL
St. Louis
$1,085 Roundtrip, found 4 days ago
$1,085
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sat, Apr 25 from Colombo to St. Louis, returning Fri, Jun 19, priced at $1,085 found 4 days ago
Emirates
Tue, Dec 16 - Wed, Jan 7
CMB
Colombo
STL
St. Louis
$1,093 Roundtrip, found 5 days ago
$1,093
Roundtrip
found 5 days ago
Select Emirates flight, departing Tue, Dec 16 from Colombo to St. Louis, returning Wed, Jan 7, priced at $1,093 found 5 days ago
Emirates
Mon, Apr 27 - Tue, Jun 23
CMB
Colombo
STL
St. Louis
$1,143 Roundtrip, found 5 hours ago
$1,143
Roundtrip
found 5 hours ago
Select Emirates flight, departing Mon, Apr 27 from Colombo to St. Louis, returning Tue, Jun 23, priced at $1,143 found 5 hours ago
SriLankan Airlines
Sat, Apr 25 - Fri, Jun 19
CMB
Colombo
STL
St. Louis
$1,144 Roundtrip, found 4 days ago
$1,144
Roundtrip
found 4 days ago
Select SriLankan Airlines flight, departing Sat, Apr 25 from Colombo to St. Louis, returning Fri, Jun 19, priced at $1,144 found 4 days ago
Emirates
Mon, Apr 27 - Tue, Jun 23
CMB
Colombo
STL
St. Louis
$1,156 Roundtrip, found 5 hours ago
$1,156
Roundtrip
found 5 hours ago
Select Emirates flight, departing Mon, Apr 27 from Colombo to St. Louis, returning Tue, Jun 23, priced at $1,156 found 5 hours ago
Emirates
Tue, Dec 16 - Wed, Jan 7
CMB
Colombo
STL
St. Louis
$1,159 Roundtrip, found 5 days ago
$1,159
Roundtrip
found 5 days ago
Select Emirates flight, departing Tue, Dec 16 from Colombo to St. Louis, returning Wed, Jan 7, priced at $1,159 found 5 days ago
Lufthansa
Sat, Apr 25 - Fri, Jun 19
CMB
Colombo
STL
St. Louis
$1,199 Roundtrip, found 4 days ago
$1,199
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Sat, Apr 25 from Colombo to St. Louis, returning Fri, Jun 19, priced at $1,199 found 4 days ago
Swiss International Air Lines
Tue, Dec 16 - Wed, Jan 7
CMB
Colombo
STL
St. Louis
$1,213 Roundtrip, found 5 days ago
$1,213
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Tue, Dec 16 from Colombo to St. Louis, returning Wed, Jan 7, priced at $1,213 found 5 days ago
Flights from Colombo (CMB) to St. Louis (STL)
Origin airport
Bandaranaike Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, Cathay Pacific, Lufthansa, Qatar Airways
Roundtrip price
$1,058
Distance
9202 mi

Colombo to St. Louis Flights

The cheapest times to fly from Colombo to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Colombo to St. Louis are during the month of April. You can find some of the cheapest flights from Colombo to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Colombo to St. Louis

Sunday is one of the best days to book for cheap flights from Colombo to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Colombo to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Colombo to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $800 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Colombo to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Colombo to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $800 or cheap return flight from $1,058 from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL)?
April is the most affordable month to fly from CMB to STL. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from CMB to STL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL)?
You'll need to catch a flight with a layover if you're traveling from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from CMB to STL?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL)?
To reach Lambert-St. Louis Intl. Airport (STL) on time, opt for a flight that leaves from Bandaranaike Intl. Airport (CMB) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute bookings from CMB to STL are usually more expensive. To lock in the lowest prices, start searching for flights early. That said, if you're flexible with your travel plans, it's possible to land a cheap ticket right before your journey.
Is it cheaper to book a CMB to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a CMB to STL flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Bandaranaike Intl. Airport (CMB) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you're able to cancel or reschedule your CMB to STL flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need further details, go to our Customer Service portal.

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*Available to One Key members.