S$860 Cheap Flights from Singapore to St. Louis

View S$860 flight on Tue, 3 Feb, 2026Opens in a new window

Popular airlines from Singapore Changi Airport (SIN) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Singapore to St. Louis (SIN-STL)

Prices were available within the past 7 days and start at S$860 for one-way flights and S$1,287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 5 Mar - Wed, 11 Mar
SIN
Singapore
STL
St. Louis
S$1,287 Return, found 1 hour ago
S$1,287
Return
found 1 hour ago
Select Air Canada flight, departing Thu, 5 Mar from Singapore to St. Louis, returning Wed, 11 Mar, priced at S$1,287 found 1 hour ago
Air Canada
Thu, 5 Mar - Wed, 11 Mar
SIN
Singapore
STL
St. Louis
S$1,317 Return, found 1 hour ago
S$1,317
Return
found 1 hour ago
Select Air Canada flight, departing Thu, 5 Mar from Singapore to St. Louis, returning Wed, 11 Mar, priced at S$1,317 found 1 hour ago
EVA Airways
Mon, 9 Feb - Mon, 16 Feb
SIN
Singapore
STL
St. Louis
S$1,381 Return, found 7 hours ago
S$1,381
Return
found 7 hours ago
Select EVA Airways flight, departing Mon, 9 Feb from Singapore to St. Louis, returning Mon, 16 Feb, priced at S$1,381 found 7 hours ago
China Airlines
Tue, 24 Mar - Tue, 5 May
SIN
Singapore
STL
St. Louis
S$1,383 Return, found 5 days ago
S$1,383
Return
found 5 days ago
Select China Airlines flight, departing Tue, 24 Mar from Singapore to St. Louis, returning Tue, 5 May, priced at S$1,383 found 5 days ago
Air Canada
Tue, 5 May - Mon, 11 May
SIN
Singapore
STL
St. Louis
S$1,395 Return, found 1 hour ago
S$1,395
Return
found 1 hour ago
Select Air Canada flight, departing Tue, 5 May from Singapore to St. Louis, returning Mon, 11 May, priced at S$1,395 found 1 hour ago
Air Canada
Tue, 5 May - Mon, 11 May
SIN
Singapore
STL
St. Louis
S$1,399 Return, found 1 hour ago
S$1,399
Return
found 1 hour ago
Select Air Canada flight, departing Tue, 5 May from Singapore to St. Louis, returning Mon, 11 May, priced at S$1,399 found 1 hour ago
Cathay Pacific
Mon, 2 Feb - Sat, 7 Feb
SIN
Singapore
STL
St. Louis
S$1,544 Return, found 7 hours ago
S$1,544
Return
found 7 hours ago
Select Cathay Pacific flight, departing Mon, 2 Feb from Singapore to St. Louis, returning Sat, 7 Feb, priced at S$1,544 found 7 hours ago
Qatar Airways
Tue, 24 Mar - Tue, 5 May
SIN
Singapore
STL
St. Louis
S$1,648 Return, found 5 days ago
S$1,648
Return
found 5 days ago
Select Qatar Airways flight, departing Tue, 24 Mar from Singapore to St. Louis, returning Tue, 5 May, priced at S$1,648 found 5 days ago
Japan Airlines
Thu, 5 Mar - Mon, 9 Mar
SIN
Singapore
STL
St. Louis
S$1,702 Return, found 1 hour ago
S$1,702
Return
found 1 hour ago
Select Japan Airlines flight, departing Thu, 5 Mar from Singapore to St. Louis, returning Mon, 9 Mar, priced at S$1,702 found 1 hour ago
American Airlines
Thu, 5 Mar - Wed, 11 Mar
SIN
Singapore
STL
St. Louis
S$1,803 Return, found 1 hour ago
S$1,803
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 5 Mar from Singapore to St. Louis, returning Wed, 11 Mar, priced at S$1,803 found 1 hour ago
Singapore to St. Louis route information
Origin airport
Changi
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, Delta, Japan Airlines, KLM, Korean Air, Lufthansa, Qantas Airways, Qatar Airways, United
Return price
S$1,286
Distance
15231 km

Perfect flights from Singapore to St. Louis

Your Journey from Singapore to St. Louis

Start your unforgettable journey with Expedia. Our broad selection of flights from Singapore to St. Louis caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including EVA Airways, Qatar Airways, Cathay Pacific, China Airlines, Air Canada, Japan Airlines, Lufthansa, American Airlines. Our selection of flights from Changi to Lambert-St. Louis Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Singapore to St. Louis Flights

Experience the joy of finding cheap flights from Changi to Lambert-St. Louis Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$860 and roundtrip prices from S$1,287*.
 

Pre-Flight Essentials

Ensure a smooth journey from Singapore to St. Louis with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant St. Louis

Picture yourself stepping off the plane in St. Louis and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Singapore to St. Louis Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Singapore to St. Louis.
 

Beyond the Flight – Exploring St. Louis

With Expedia, your adventure extends beyond the flight. Explore St. Louis at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Singapore to St. Louis with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Singapore to St. Louis with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from Singapore Airport to Lambert Field?
If you're travelling between Changi Airport and St. Louis Lambert International Airport, round-trip flights start from S$1,287. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal slip through your fingers. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Changi Airport to Lambert Field?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Changi Airport to STL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SIN to Lambert-St. Louis Intl. Airport (STL) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Changi Airport to Lambert-St. Louis Intl. Airport (STL)?
With a flight distance of 15,300 kilometres from SIN (SIN) to STL (STL), this is a long-haul journey. Make sure you drink lots of water and go for a short walk down the aisle from time to time.
Which airlines fly direct from SIN to Lambert Field?
If you want to fly straight from SIN to Lambert Field, you'll have to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly on this route.
Are Singapore Airport to STL flight tickets cheaper when they're purchased at the last minute?
Tickets from Changi Airport to St. Louis Lambert International Airport are available up to a year prior to departure on Expedia. And although you may occasionally score fantastic last-minute deals, it's never something you can count on. Also, booking your flights well in advance means you'll have more choices — and you can avoid ending up with the dreaded middle seat! We're constantly updating our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

Explore a world of travel with Expedia

*Available to Expedia members.