$568+ Cheap flights from St. Louis (STL) to Singapore (SIN)
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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Nov 3 — Nov 101
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Singapore with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Singapore
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to SingaporeExplore the most affordable flight options available from St. Louis to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 4, 2026.
Explore the most affordable flight options available from St. Louis to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 4, 2026.
This Air Canada deal was found by Cheapflights users on 10/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm -
2 stops45h 55m
Mon 11/2311:10 pm -
2 stops54h 16m
Deal found 10/2![Multiple Airlines logo]()
$1,134
This Air Canada deal was found by Cheapflights users on 10/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/154:05 pm -
2 stops48h 50m
Sun 11/2211:10 pm -
2 stops54h 16m
Deal found 10/1![Air Canada logo]()
$1,147
This Justfly.com deal was found by Cheapflights users on 10/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:01 am -
2 stops36h 24m
Sun 10/114:05 pm -
2 stops44h 54m
Deal found 10/3![Cathay Pacific logo]()
$1,260
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
2 stops34h 55m
Sun 11/228:55 am -
1 stop29h 04m
Deal found 10/1![Multiple Airlines logo]()
$1,281
This United Airlines deal was found by Cheapflights users on 10/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm -
1 stop22h 55m
Mon 11/2310:10 am -
1 stop21h 55m
Deal found 10/2![United Airlines logo]()
$1,292
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:00 am -
1 stop34h 00m
Sun 11/2210:10 am -
1 stop21h 55m
Deal found 10/1![United Airlines logo]()
$1,301
This Qatar Airways deal was found by Cheapflights users on 9/29. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:29 am -
2 stops43h 16m
Sun 10/253:15 am -
2 stops30h 42m
Deal found 9/29![Qatar Airways logo]()
$1,304
This Justfly.com deal was found by Cheapflights users on 9/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:30 am -
2 stops49h 45m
Sat 10/103:15 am -
2 stops30h 42m
Deal found 9/30![Qatar Airways logo]()
$1,328
This Air Canada deal was found by Cheapflights users on 10/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/294:05 pm -
2 stops48h 55m
Wed 1/208:30 am -
2 stops44h 56m
Deal found 10/3![Multiple Airlines logo]()
$1,366
Best flights from St. Louis to SingaporeDiscover carefully curated flight deals from St. Louis to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 4, 2026.
Discover carefully curated flight deals from St. Louis to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 4, 2026.
This United Airlines deal was found by Cheapflights users on 10/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm -
1 stop22h 55m
Mon 11/2310:10 am -
1 stop21h 55m
Deal found 10/2![United Airlines logo]()
$1,292
This Qatar Airways deal was found by Cheapflights users on 10/1. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:29 am -
2 stops43h 16m
Sun 10/253:15 am -
2 stops30h 42m
Deal found 10/1![Qatar Airways logo]()
$1,304
This China Airlines deal was found by Cheapflights users on 10/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/156:05 pm -
2 stops29h 00m
Sat 2/202:00 am -
3 stops48h 15m
Deal found 10/3![Multiple Airlines logo]()
$1,534
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:00 am -
1 stop34h 00m
Sun 11/2210:10 am -
1 stop21h 55m
Deal found 10/1![United Airlines logo]()
$1,301
This EVA Air deal was found by Cheapflights users on 10/2. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:32 pm -
2 stops29h 33m
Tue 12/293:45 pm -
3 stops36h 15m
Deal found 10/2![Multiple Airlines logo]()
$2,252
This United Airlines deal was found by Cheapflights users on 10/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:08 am -
1 stop22h 27m
Mon 10/2610:10 am -
1 stop20h 55m
Deal found 10/3![United Airlines logo]()
$2,091
This United Airlines deal was found by Cheapflights users on 10/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:11 am -
1 stop24h 04m
Wed 1/2010:10 am -
1 stop22h 07m
Deal found 10/3![United Airlines logo]()
$2,099
This United Airlines deal was found by Cheapflights users on 10/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/228:48 am -
2 stops33h 12m
Tue 12/2910:20 pm -
1 stop20h 46m
Deal found 10/3![United Airlines logo]()
$2,666
Last-minute flights from St. Louis to SingaporeDiscover last-minute flight deals from St. Louis to Singapore. Data last updated October 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Singapore. Data last updated October 4, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 10/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:01 am -
2 stops36h 24m
Sun 10/114:05 pm -
2 stops44h 54m
Deal found 10/3![Cathay Pacific logo]()
$1,260
This Justfly.com deal was found by Cheapflights users on 9/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:30 am -
2 stops49h 45m
Sat 10/103:15 am -
2 stops30h 42m
Deal found 9/30![Qatar Airways logo]()
$1,328
This Qatar Airways deal was found by Cheapflights users on 9/29. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:29 am -
2 stops43h 16m
Sun 10/253:15 am -
2 stops30h 42m
Deal found 9/29![Qatar Airways logo]()
$1,304
This Air Canada deal was found by Cheapflights users on 10/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/154:05 pm -
2 stops48h 50m
Sun 11/2211:10 pm -
2 stops54h 16m
Deal found 10/1![Air Canada logo]()
$1,147
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
2 stops34h 55m
Sun 11/228:55 am -
1 stop29h 04m
Deal found 10/1![Multiple Airlines logo]()
$1,281
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:00 am -
1 stop34h 00m
Sun 11/2210:10 am -
1 stop21h 55m
Deal found 10/1![United Airlines logo]()
$1,301
This Air Canada deal was found by Cheapflights users on 10/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm -
2 stops45h 55m
Mon 11/2311:10 pm -
2 stops54h 16m
Deal found 10/2![Multiple Airlines logo]()
$1,134
This United Airlines deal was found by Cheapflights users on 10/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm -
1 stop22h 55m
Mon 11/2310:10 am -
1 stop21h 55m
Deal found 10/2![United Airlines logo]()
$1,292
One-way flights from St. Louis to SingaporeSearch for one-way flight options from St. Louis to Singapore. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
Search for one-way flight options from St. Louis to Singapore. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
This FlightHub deal was found by Cheapflights users on 9/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/97:21 am -
2 stops39h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Cathay Pacific logo]()
$568
This Etihad Airways deal was found by Cheapflights users on 10/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/98:13 am -
2 stops35h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/67:02 pm -
3 stops50h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Multiple Airlines logo]()
$612
This United Airlines deal was found by Cheapflights users on 10/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/98:30 am -
1 stop45h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![United Airlines logo]()
$728
This FlightHub deal was found by Cheapflights users on 10/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/63:40 pm -
1 stop25h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Lufthansa logo]()
$833
Find flight deals from St. Louis to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,134 (Air Canada) |
One-way from | $568 (FlightHub) |
Popular in | February |
Cheapest in | October |
Average price | $1,035 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Singapore 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, Cheapflights users made 7,457,451 searches. Data last updated October 4, 2026.
Use the filters below to find and compare flights from St. Louis to Singapore that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Tue 2/9
7:21 am-1:00 pm
2 stops39h 39m
Singapore Changi
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$568
Quickest round-trip
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Tue 2/9
8:13 am-9:35 am
2 stops35h 22m
Singapore Changi
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$573
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Wed 1/6
7:02 pm-11:50 am
3 stops50h 48m
Singapore Changi
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$612
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Tue 2/9
8:30 am-8:15 pm
1 stop45h 45m
Singapore Changi
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$728
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Mon 11/16
7:05 pm-8:00 am
1 stop22h 55m
Singapore Changi
Mon 11/23
10:10 am-6:05 pm
1 stop21h 55m
$1,292
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Sun 11/15
8:00 am-8:00 am
1 stop34h 00m
Singapore Changi
Sun 11/22
10:10 am-6:05 pm
1 stop21h 55m
$1,301
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Thu 10/22
7:29 am-3:45 pm
2 stops43h 16m
Singapore Changi
Sun 10/25
3:15 am-8:57 pm
2 stops30h 42m
$1,304
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Mon 2/15
6:05 pm-1:05 pm
2 stops29h 00m
Singapore Changi
Sat 2/20
2:00 am-12:15 pm
3 stops48h 15m
$1,534
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Thu 10/22
7:08 am-6:35 pm
1 stop22h 27m
Singapore Changi
Mon 10/26
10:10 am-6:05 pm
1 stop20h 55m
$2,091
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Tue 12/29
6:11 am-8:15 pm
1 stop24h 04m
Singapore Changi
Wed 1/20
10:10 am-6:17 pm
1 stop22h 07m
$2,099
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Singapore
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Singapore in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Singapore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Singapore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Singapore flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Singapore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from St. Louis with our price prediction graph.
STL-SIN
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 Singapore
Reviews of airlines servicing Singapore
Get insights into the airlines that provide service to Singapore. 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 Singapore. Reviews last updated October 4, 2026.
See what other customers who have flown with United Airlines from St. Louis to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from St. Louis
Popular flights
Singapore flight routes
Alternative routes for St. Louis to Singapore
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Singapore by cabin class
Find flights from St. Louis to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Singapore flights
Browse other St. Louis and Singapore flight options. Last updated on October 4, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Singapore
Explore flights to Singapore departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 4, 2026.
Top airline flying from St. Louis to Singapore
Discover the top airline that operate flights from St. Louis to Singapore. 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 7,457,451 searches. Data last updated October 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,126 | Average$1,525 | FlexibilityNo cancel fee | On-time69% |