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Cheap flights from St. Louis to Singapore from $1,157

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 8/31. 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
0 bags

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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
7:34 pm - 3:45 pm
STL
-
SIN
55h 11m
2 stops
Qatar Airways Logo
7:40 pm - 11:59 pm
SIN
-
STL
41h 19m
2 stops
$1,157Qatar Airways
Mon, Aug 31 - Thu, Sep 17
Qatar Airways Logo
10:16 am - 3:45 pm
STL
-
SIN
40h 29m
2 stops
Qatar Airways Logo
3:15 am - 7:46 pm
SIN
-
STL
29h 31m
2 stops
$1,260Qatar Airways
Tue, Sep 8 - Mon, Sep 21
Multiple Airlines Logo
3:00 pm - 5:35 pm
STL
-
SIN
37h 35m
1 stop
Multiple Airlines Logo
9:00 am - 11:59 pm
SIN
-
STL
27h 59m
1 stop
$1,451Multiple Airlines
Mon, Aug 31 - Thu, Sep 17
Multiple Airlines Logo
7:34 pm - 9:30 pm
STL
-
SIN
36h 56m
2 stops
Multiple Airlines Logo
8:45 pm - 11:02 pm
SIN
-
STL
39h 17m
1 stop
$1,520Multiple Airlines
Mon, Aug 31 - Thu, Sep 17
Multiple Airlines Logo
6:00 am - 7:40 am
STL
-
SIN
36h 40m
1 stop
Multiple Airlines Logo
9:15 am - 2:21 pm
SIN
-
STL
42h 06m
2 stops
$1,562Multiple Airlines
Tue, Sep 8 - Tue, Sep 22
Lufthansa Logo
3:30 pm - 6:50 am
STL
-
SIN
26h 20m
1 stop
Lufthansa Logo
12:35 pm - 1:25 pm
SIN
-
STL
37h 50m
1 stop
$1,565Lufthansa
Tue, Sep 8 - Tue, Sep 22
Air Canada Logo
7:05 am - 5:15 am
STL
-
SIN
33h 10m
2 stops
Air Canada Logo
7:00 am - 3:46 pm
SIN
-
STL
45h 46m
2 stops
$1,628Air Canada
Thu, May 28 - Thu, Jun 4
Finnair Logo
5:03 pm - 6:30 pm
STL
-
SIN
36h 27m
2 stops
Finnair Logo
9:35 pm - 12:16 am
SIN
-
STL
39h 41m
2 stops
$1,661Finnair
Mon, Jun 15 - Mon, Jun 22
Finnair Logo
5:03 pm - 6:30 pm
STL
-
SIN
36h 27m
2 stops
Finnair Logo
9:35 pm - 12:16 am
SIN
-
STL
39h 41m
2 stops
$1,698Finnair
Sun, Jun 14 - Sun, Jun 21
Qatar Airways Logo
7:56 pm - 9:15 pm
STL
-
SIN
60h 19m
2 stops
Qatar Airways Logo
7:40 pm - 12:15 am
SIN
-
STL
41h 35m
2 stops
$1,704Qatar Airways
Mon, Jul 13 - Fri, Jul 17

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Finnair flights from St. Louis to Singapore

Our best Finnair deals on St. Louis to Singapore flight tickets
Finnair
Jun 15
STL5:03 pmLambert-St Louis
36h 27m
2 stops
SIN6:30 pmSingapore Changi
Jun 22
SIN9:35 pmSingapore Changi
39h 41m
2 stops
STL12:16 amLambert-St Louis
$1,661
Finnair
Jun 14
STL5:03 pmLambert-St Louis
36h 27m
2 stops
SIN6:30 pmSingapore Changi
Jun 21
SIN9:35 pmSingapore Changi
39h 41m
2 stops
STL12:16 amLambert-St Louis
$1,698
Finnair
May 15
STL12:27 pmLambert-St Louis
41h 03m
2 stops
SIN6:30 pmSingapore Changi
May 21
SIN9:35 pmSingapore Changi
39h 19m
2 stops
STL11:54 pmLambert-St Louis
$7,604

Qatar Airways flights from St. Louis to Singapore

Our best Qatar Airways deals on St. Louis to Singapore flight tickets
Qatar Airways
Aug 31
STL7:34 pmLambert-St Louis
55h 11m
2 stops
SIN3:45 pmSingapore Changi
Sep 17
SIN7:40 pmSingapore Changi
41h 19m
2 stops
STL11:59 pmLambert-St Louis
$1,157
Qatar Airways
Sep 8
STL10:16 amLambert-St Louis
40h 29m
2 stops
SIN3:45 pmSingapore Changi
Sep 21
SIN3:15 amSingapore Changi
29h 31m
2 stops
STL7:46 pmLambert-St Louis
$1,260
Qatar Airways
Jul 13
STL7:56 pmLambert-St Louis
60h 19m
2 stops
SIN9:15 pmSingapore Changi
Jul 17
SIN7:40 pmSingapore Changi
41h 35m
2 stops
STL12:15 amLambert-St Louis
$1,704

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 May 3, 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

Mon 8/31

7:34 pm-3:45 pm

2 stops55h 11m

Singapore Changi

Thu 9/17

7:40 pm-11:59 pm

2 stops41h 19m

$1,157

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 9/8

10:16 am-3:45 pm

2 stops40h 29m

Singapore Changi

Mon 9/21

3:15 am-7:46 pm

2 stops29h 31m

$1,260

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 8/31

3:00 pm-5:35 pm

1 stop37h 35m

Singapore Changi

Thu 9/17

9:00 am-11:59 pm

1 stop27h 59m

$1,451

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 8/31

7:34 pm-9:30 pm

2 stops36h 56m

Singapore Changi

Thu 9/17

8:45 pm-11:02 pm

1 stop39h 17m

$1,520

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 9/8

6:00 am-7:40 am

1 stop36h 40m

Singapore Changi

Tue 9/22

9:15 am-2:21 pm

2 stops42h 06m

$1,562
Quickest round-trip

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 9/8

3:30 pm-6:50 am

1 stop26h 20m

Singapore Changi

Tue 9/22

12:35 pm-1:25 pm

1 stop37h 50m

$1,565

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 5/28

7:05 am-5:15 am

2 stops33h 10m

Singapore Changi

Thu 6/4

7:00 am-3:46 pm

2 stops45h 46m

$1,628

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 6/15

5:03 pm-6:30 pm

2 stops36h 27m

Singapore Changi

Mon 6/22

9:35 pm-12:16 am

2 stops39h 41m

$1,661

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 6/14

5:03 pm-6:30 pm

2 stops36h 27m

Singapore Changi

Sun 6/21

9:35 pm-12:16 am

2 stops39h 41m

$1,698

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 7/13

7:56 pm-9:15 pm

2 stops60h 19m

Singapore Changi

Fri 7/17

7:40 pm-12:15 am

2 stops41h 35m

$1,704

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

What is the cheapest month to fly to Singapore?

The month of October is, on average, the cheapest month to fly to Singapore from St. Louis, with most prices found around $0. If you aren’t able to travel to Singapore during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $1,094.

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

You could potentially save up to 9% 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 20m

Direct flights

None
The fastest flight from St. Louis to Singapore takes 29h 20m
There are no direct flights from St. Louis to Singapore. There are no popular flight routes from St. Louis to Singapore.
Search flight deals

Frequently asked questions about flying from St. Louis to Singapore

  • 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
9,681 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.

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