$549+ Cheap flights from St. Louis (STL) to Singapore (SIN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SIN
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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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
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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 August 22, 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 August 22, 2026.
This Air Canada deal was found by Cheapflights users on 8/20. 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.
Wed 10/1412:10 pm -
2 stops52h 05m
Wed 11/48:30 am -
2 stops44h 56m
Deal found 8/20![Air Canada logo]()
$1,117
This SmartFares deal was found by Cheapflights users on 8/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:29 am -
2 stops49h 46m
Thu 10/87:40 pm -
2 stops41h 19m
Deal found 8/17![Multiple Airlines logo]()
$1,149
This Air Canada deal was found by Cheapflights users on 8/20. 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 10/412:10 pm -
2 stops28h 05m
Sun 10/117:00 am -
2 stops48h 41m
Deal found 8/20![Air Canada logo]()
$1,171
This Air Canada deal was found by Cheapflights users on 8/19. 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.
Sat 10/312:10 pm -
2 stops52h 05m
Sat 10/107:00 am -
2 stops26h 20m
Deal found 8/19![Air Canada logo]()
$1,221
This SmartFares deal was found by Cheapflights users on 8/19. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:02 am -
2 stops43h 43m
Sat 10/173:15 am -
2 stops33h 44m
Deal found 8/19![Multiple Airlines logo]()
$1,227
This Rumbo deal was found by Cheapflights users on 8/21. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
2 stops44h 05m
Thu 9/107:20 am -
2 stops24h 18m
Deal found 8/21![Cathay Pacific logo]()
$1,242
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:29 am -
2 stops28h 51m
Mon 9/148:05 am -
2 stops28h 54m
Deal found 8/18![Multiple Airlines logo]()
$1,254
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 10/147:08 am -
1 stop22h 27m
Wed 11/410:10 am -
1 stop21h 55m
Deal found 8/20![United Airlines logo]()
$1,291
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Fri 10/97:08 am -
1 stop22h 27m
Sun 10/188:35 pm -
2 stops37h 01m
Deal found 8/19![United Airlines logo]()
$1,296
This Air Canada deal was found by Cheapflights users on 8/21. 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.
Thu 9/109:40 am -
2 stops30h 35m
Mon 9/1410:00 pm -
2 stops53h 00m
Deal found 8/21![Air Canada logo]()
$1,298
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 August 22, 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 August 22, 2026.
This SmartFares deal was found by Cheapflights users on 8/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:02 am -
2 stops43h 43m
Sat 10/173:15 am -
2 stops33h 44m
Deal found 8/20![Multiple Airlines logo]()
$1,238
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/17:08 am -
1 stop22h 27m
Thu 10/88:35 pm -
2 stops37h 46m
Deal found 8/17![United Airlines logo]()
$1,296
This Qatar Airways deal was found by Cheapflights users on 8/20. 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 9/1011:01 am -
2 stops39h 44m
Sun 9/133:15 am -
2 stops30h 29m
Deal found 8/20![Qatar Airways logo]()
$1,445
This Finnair deal was found by Cheapflights users on 8/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/212:15 pm -
2 stops40h 25m
Sat 1/1610:05 pm -
2 stops35h 36m
Deal found 8/17![Finnair logo]()
$2,008
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 10/147:08 am -
1 stop22h 27m
Wed 11/410:20 pm -
2 stops30h 10m
Deal found 8/20![United Airlines logo]()
$1,296
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Sat 10/37:08 am -
1 stop22h 27m
Sat 10/108:45 am -
1 stop22h 58m
Deal found 8/19![United Airlines logo]()
$1,338
This Rumbo deal was found by Cheapflights users on 8/21. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
2 stops41h 25m
Thu 9/108:45 pm -
1 stop29h 50m
Deal found 8/21![Multiple Airlines logo]()
$1,697
This China Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 12/226:04 am -
2 stops41h 01m
Tue 12/292:25 pm -
3 stops37h 35m
Deal found 8/19![Multiple Airlines logo]()
$2,089
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 1/26:09 pm -
2 stops36h 06m
Wed 1/1310:20 pm -
2 stops26h 21m
Deal found 8/17![United Airlines logo]()
$1,947
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/108:42 am -
1 stop32h 33m
Mon 9/148:45 am -
1 stop22h 54m
Deal found 8/21![United Airlines logo]()
$2,091
Last-minute flights from St. Louis to SingaporeDiscover last-minute flight deals from St. Louis to Singapore. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Singapore. Data last updated August 22, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/18. 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 8/253:24 pm -
2 stops25h 51m
Tue 9/18:45 am -
2 stops25h 01m
Deal found 8/18![United Airlines logo]()
$1,296
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Tue 8/258:50 am -
2 stops40h 45m
Tue 9/18:45 pm -
1 stop39h 14m
Deal found 8/18![Multiple Airlines logo]()
$2,137
This SmartFares deal was found by Cheapflights users on 8/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:30 pm -
1 stop35h 50m
Tue 9/111:40 pm -
1 stop26h 45m
Deal found 8/18![Lufthansa logo]()
$3,104
This Malaysia Airlines deal was found by Cheapflights users on 8/18. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am -
3 stops37h 25m
Tue 9/111:00 pm -
2 stops36h 59m
Deal found 8/18![Malaysia Airlines logo]()
$3,554
This Rumbo deal was found by Cheapflights users on 8/21. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
2 stops44h 05m
Thu 9/107:20 am -
2 stops24h 18m
Deal found 8/21![Cathay Pacific logo]()
$1,242
This Rumbo deal was found by Cheapflights users on 8/21. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
2 stops41h 25m
Thu 9/108:45 pm -
1 stop29h 50m
Deal found 8/21![Multiple Airlines logo]()
$1,697
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/68:42 am -
1 stop44h 53m
Thu 9/108:45 am -
1 stop22h 14m
Deal found 8/21![United Airlines logo]()
$2,092
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:29 am -
2 stops28h 51m
Mon 9/148:05 am -
2 stops28h 54m
Deal found 8/18![Multiple Airlines logo]()
$1,254
This Air Canada deal was found by Cheapflights users on 8/21. 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.
Thu 9/109:40 am -
2 stops30h 35m
Mon 9/1410:00 pm -
2 stops53h 00m
Deal found 8/21![Air Canada logo]()
$1,298
This Qatar Airways deal was found by Cheapflights users on 8/20. 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 9/1011:01 am -
2 stops39h 44m
Sun 9/133:15 am -
2 stops30h 29m
Deal found 8/20![Qatar Airways logo]()
$1,445
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/108:42 am -
1 stop32h 33m
Mon 9/148:35 pm -
2 stops32h 03m
Deal found 8/17![United Airlines logo]()
$2,091
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 August 22, 2026.
Search for one-way flight options from St. Louis to Singapore. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 11/110:35 am -
2 stops33h 00m
Deal found 8/18![Multiple Airlines logo]()
$549
This SmartFares deal was found by Cheapflights users on 8/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/93:54 pm -
2 stops57h 01m
Deal found 8/21![Multiple Airlines logo]()
$596
This Justfly.com deal was found by Cheapflights users on 8/21. 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.
Tue 2/911:31 am -
2 stops39h 19m
Deal found 8/21![Cathay Pacific logo]()
$600
This KAYAK deal was found by Cheapflights users on 8/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/85:00 am -
2 stops34h 40m
Deal found 8/21![Cathay Pacific logo]()
$610
This FlightHub deal was found by Cheapflights users on 8/17. 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 10/67:02 am -
2 stops43h 43m
Deal found 8/17![Qatar Airways logo]()
$617
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Mon 2/83:54 pm -
3 stops52h 31m
Deal found 8/21![Multiple Airlines logo]()
$677
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Fri 2/123:24 pm -
2 stops49h 31m
Deal found 8/21![Multiple Airlines logo]()
$699
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/67:08 am -
1 stop22h 27m
Deal found 8/17![United Airlines logo]()
$711
This United Airlines deal was found by Cheapflights users on 8/18. 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 11/17:05 pm -
1 stop35h 10m
Deal found 8/18![United Airlines logo]()
$728
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,117 (Air Canada) |
One-way from | $549 (Kiwi.com) |
Popular in | February |
Cheapest in | October |
Average price | $1,288 |
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 August 22, 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
Fri 10/9
7:02 am-3:45 pm
2 stops43h 43m
Singapore Changi
Sat 10/17
3:15 am-11:59 pm
2 stops33h 44m
$1,238
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Thu 10/1
7:08 am-6:35 pm
1 stop22h 27m
Singapore Changi
Thu 10/8
8:35 pm-9:21 pm
2 stops37h 46m
$1,296
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Wed 10/14
7:08 am-6:35 pm
1 stop22h 27m
Singapore Changi
Wed 11/4
10:20 pm-2:30 pm
2 stops30h 10m
$1,296
Quickest round-trip
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Sat 10/3
7:08 am-6:35 pm
1 stop22h 27m
Singapore Changi
Sat 10/10
8:45 am-6:43 pm
1 stop22h 58m
$1,338
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Thu 9/10
11:01 am-3:45 pm
2 stops39h 44m
Singapore Changi
Sun 9/13
3:15 am-8:44 pm
2 stops30h 29m
$1,445
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Sun 9/6
6:00 am-12:25 pm
2 stops41h 25m
Singapore Changi
Thu 9/10
8:45 pm-1:35 pm
1 stop29h 50m
$1,697
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Sat 1/2
6:09 pm-8:15 pm
2 stops36h 06m
Singapore Changi
Wed 1/13
10:20 pm-10:41 am
2 stops26h 21m
$1,947
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Sat 1/2
12:15 pm-6:40 pm
2 stops40h 25m
Singapore Changi
Sat 1/16
10:05 pm-7:41 pm
2 stops35h 36m
$2,008
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Tue 12/22
6:04 am-1:05 pm
2 stops41h 01m
Singapore Changi
Tue 12/29
2:25 pm-2:00 pm
3 stops37h 35m
$2,089
St. LouisSingapore
STL Lambert-St Louis - SIN Singapore Changi
STLSIN
Lambert-St Louis
Thu 9/10
8:42 am-6:15 am
1 stop32h 33m
Singapore Changi
Mon 9/14
8:45 am-6:39 pm
1 stop22h 54m
$2,091
Showing 1-10 of 15 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 August.
| 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 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 August 22, 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.
Boarding
7.7
Overall
7.4
Food
6.7
Crew
8.1
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Boarding
7.7
Overall
7.4
Food
6.7
Crew
8.1
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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.
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Complete your trip
Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.
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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 August 22, 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 August 22, 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 August 22, 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 August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,094 | Average$1,476 | FlexibilityNo cancel fee | On-time69% |