Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Singapore from $1,149

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Singapore departing on 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qatar Airways Logo
4:30 pm - 8:50 am
STL
-
SIN
27h 20m
2 stops
Qatar Airways Logo
3:15 am - 7:33 pm
SIN
-
STL
29h 18m
2 stops
$1,149Qatar Airways
Tue, May 5 - Mon, May 11
Qatar Airways Logo
10:33 am - 8:50 am
STL
-
SIN
33h 17m
2 stops
Qatar Airways Logo
3:15 am - 10:17 pm
SIN
-
STL
32h 02m
2 stops
$1,150Qatar Airways
Sun, Apr 5 - Wed, Apr 15
Air Canada Logo
7:05 am - 5:15 am
STL
-
SIN
33h 10m
2 stops
Air Canada Logo
7:00 am - 8:25 pm
SIN
-
STL
26h 25m
2 stops
$1,170Air Canada
Fri, May 15 - Tue, May 19
Qatar Airways Logo
4:29 pm - 8:50 am
STL
-
SIN
27h 21m
2 stops
Qatar Airways Logo
7:40 pm - 8:03 pm
SIN
-
STL
37h 23m
2 stops
$1,198Qatar Airways
Sun, Sep 13 - Thu, Sep 17
Qatar Airways Logo
2:33 pm - 8:50 am
STL
-
SIN
29h 17m
2 stops
Qatar Airways Logo
3:15 am - 10:19 pm
SIN
-
STL
32h 04m
2 stops
$1,205Qatar Airways
Sun, May 3 - Sat, May 9
Qatar Airways Logo
7:12 am - 8:50 am
STL
-
SIN
36h 38m
2 stops
Qatar Airways Logo
7:40 pm - 11:54 pm
SIN
-
STL
41h 14m
2 stops
$1,251Qatar Airways
Mon, May 4 - Mon, May 18
Multiple Airlines Logo
1:05 pm - 5:15 am
STL
-
SIN
27h 10m
2 stops
Multiple Airlines Logo
7:00 am - 8:04 pm
SIN
-
STL
26h 04m
2 stops
$1,274Multiple Airlines
Thu, May 14 - Sat, May 23
United Airlines Logo
7:06 pm - 6:35 pm
STL
-
SIN
34h 29m
1 stop
United Airlines Logo
8:35 pm - 5:47 am
SIN
-
STL
22h 12m
1 stop
$1,323United Airlines
Mon, May 4 - Mon, May 18
Qatar Airways Logo
12:05 pm - 3:45 pm
STL
-
SIN
38h 40m
2 stops
Qatar Airways Logo
3:15 am - 11:59 pm
SIN
-
STL
33h 44m
2 stops
$1,328Qatar Airways
Wed, Apr 1 - Fri, Apr 3
United Airlines Logo
8:30 am - 6:35 pm
STL
-
SIN
45h 05m
1 stop
United Airlines Logo
9:00 am - 10:28 am
SIN
-
STL
38h 28m
2 stops
$1,342United Airlines
Sun, Apr 5 - Thu, Apr 16

United Airlines flights from St. Louis to Singapore

Our best United Airlines deals on St. Louis to Singapore flight tickets
United Airlines
May 4
STL7:06 pmLambert-St Louis
34h 29m
1 stop
SIN6:35 pmSingapore Changi
May 18
SIN8:35 pmSingapore Changi
22h 12m
1 stop
STL5:47 amLambert-St Louis
$1,323
United Airlines
Apr 5
STL8:30 amLambert-St Louis
45h 05m
1 stop
SIN6:35 pmSingapore Changi
Apr 16
SIN9:00 amSingapore Changi
38h 28m
2 stops
STL10:28 amLambert-St Louis
$1,342
United Airlines
May 3
STL2:35 pmLambert-St Louis
27h 10m
2 stops
SIN6:45 amSingapore Changi
May 10
SIN9:00 amSingapore Changi
22h 22m
1 stop
STL6:22 pmLambert-St Louis
$1,426

Qatar Airways flights from St. Louis to Singapore

Our best Qatar Airways deals on St. Louis to Singapore flight tickets
Qatar Airways
May 5
STL4:30 pmLambert-St Louis
27h 20m
2 stops
SIN8:50 amSingapore Changi
May 11
SIN3:15 amSingapore Changi
29h 18m
2 stops
STL7:33 pmLambert-St Louis
$1,149
Qatar Airways
Apr 5
STL10:33 amLambert-St Louis
33h 17m
2 stops
SIN8:50 amSingapore Changi
Apr 15
SIN3:15 amSingapore Changi
32h 02m
2 stops
STL10:17 pmLambert-St Louis
$1,150
Qatar Airways
Sep 13
STL4:29 pmLambert-St Louis
27h 21m
2 stops
SIN8:50 amSingapore Changi
Sep 17
SIN7:40 pmSingapore Changi
37h 23m
2 stops
STL8:03 pmLambert-St Louis
$1,198

momondo 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, momondo users made 832,500 searches. Data last updated March 21, 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

Price

Cheapest round-trip

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 5/5

4:30 pm-8:50 am

2 stops27h 20m

Singapore Changi

Mon 5/11

3:15 am-7:33 pm

2 stops29h 18m

$1,149

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 4/5

10:33 am-8:50 am

2 stops33h 17m

Singapore Changi

Wed 4/15

3:15 am-10:17 pm

2 stops32h 02m

$1,150

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 5/15

7:05 am-5:15 am

2 stops33h 10m

Singapore Changi

Tue 5/19

7:00 am-8:25 pm

2 stops26h 25m

$1,170

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 9/13

4:29 pm-8:50 am

2 stops27h 21m

Singapore Changi

Thu 9/17

7:40 pm-8:03 pm

2 stops37h 23m

$1,198

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 5/3

2:33 pm-8:50 am

2 stops29h 17m

Singapore Changi

Sat 5/9

3:15 am-10:19 pm

2 stops32h 04m

$1,205

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 5/4

7:12 am-8:50 am

2 stops36h 38m

Singapore Changi

Mon 5/18

7:40 pm-11:54 pm

2 stops41h 14m

$1,251
Quickest round-trip

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 5/14

1:05 pm-5:15 am

2 stops27h 10m

Singapore Changi

Sat 5/23

7:00 am-8:04 pm

2 stops26h 04m

$1,274

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 5/4

7:06 pm-6:35 pm

1 stop34h 29m

Singapore Changi

Mon 5/18

8:35 pm-5:47 am

1 stop22h 12m

$1,323

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 4/1

12:05 pm-3:45 pm

2 stops38h 40m

Singapore Changi

Fri 4/3

3:15 am-11:59 pm

2 stops33h 44m

$1,328

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 4/5

8:30 am-6:35 pm

1 stop45h 05m

Singapore Changi

Thu 4/16

9:00 am-10:28 am

2 stops38h 28m

$1,342

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Singapore from

How to get the cheapest flight ticket from St. Louis to Singapore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on St. Louis to Singapore flights?

You could potentially save up to 2% on your flight if you consider stops on a St. Louis to Singapore flight.

Cheap St. Louis to Singapore flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Singapore

Fastest flight time

29h 05m

Direct flights

None
The fastest flight from St. Louis to Singapore takes 29h 05m
There are no direct flights from St. Louis to Singapore. There are no popular flight routes from St. Louis to Singapore.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Singapore?

    Prices for flights from Lambert-St Louis Airport to Singapore are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Singapore?

  • How old do you have to be to fly from Lambert-St Louis Airport to Singapore?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Singapore.

  • What documentation or ID do you need to fly to Singapore?

    The required travel and health documents for your Singapore trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from St. Louis to Singapore

Compare and see reviews for airlines that fly from St. Louis to Singapore with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $1,094Free CancellationRating
7.4
9,451 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Singapore?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Singapore from St. Louis.

Can I find flights from St. Louis to Singapore with flexible booking policies on momondo?

Yes. All flights to Singapore from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Singapore?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Singapore.

I’m not ready to book a flight from St. Louis to Singapore right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Singapore flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 4/20
Mon 4/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Singapore

Popular cities in Singapore

Popular flights according to clicks in the last 7 days on momondo
Flights to Singaporefrom $491