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Cheap flights from St. Louis to Singapore from $911

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Singapore departing on 7/2. 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.

Find the cheapest flights from St. Louis to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:58 am - 7:00 am
STL
-
SIN
33h 02m
2 stops
Multiple Airlines Logo
8:30 am - 3:30 pm
SIN
-
STL
45h 00m
2 stops
$1,164Multiple Airlines
Wed, Oct 28 - Wed, Nov 11
Qatar Airways Logo
11:01 am - 8:50 am
STL
-
SIN
32h 49m
2 stops
Qatar Airways Logo
3:15 am - 12:27 am
SIN
-
STL
34h 12m
2 stops
$1,183Qatar Airways
Fri, Sep 11 - Thu, Sep 17
Air Canada Logo
4:15 pm - 7:00 am
STL
-
SIN
48h 45m
2 stops
Air Canada Logo
8:50 am - 3:30 pm
SIN
-
STL
44h 40m
2 stops
$1,248Air Canada
Tue, Nov 24 - Tue, Dec 15
Air Canada Logo
2:40 pm - 9:30 pm
STL
-
SIN
65h 50m
2 stops
Air Canada Logo
6:15 am - 2:02 pm
SIN
-
STL
44h 47m
2 stops
$1,269Air Canada
Wed, Jul 15 - Mon, Jul 20
Cathay Pacific Logo
6:00 am - 11:45 am
STL
-
SIN
40h 45m
2 stops
Cathay Pacific Logo
12:45 pm - 11:42 pm
SIN
-
STL
47h 57m
2 stops
$1,449Cathay Pacific
Sun, Aug 9 - Mon, Aug 24
Multiple Airlines Logo
4:40 pm - 5:45 pm
STL
-
SIN
36h 05m
1 stop
Multiple Airlines Logo
7:00 pm - 11:56 pm
SIN
-
STL
42h 56m
2 stops
$1,471Multiple Airlines
Wed, Oct 28 - Wed, Nov 11
Qatar Airways Logo
9:39 am - 9:15 pm
STL
-
SIN
46h 36m
2 stops
Qatar Airways Logo
7:40 pm - 12:16 am
SIN
-
STL
41h 36m
2 stops
$1,477Qatar Airways
Mon, Jul 13 - Thu, Jul 16
Lufthansa Logo
4:40 pm - 5:05 pm
STL
-
SIN
35h 25m
1 stop
Lufthansa Logo
2:45 am - 1:45 pm
SIN
-
STL
25h 00m
1 stop
$1,545Lufthansa
Wed, Oct 28 - Tue, Nov 10
Multiple Airlines Logo
4:15 pm - 6:05 pm
STL
-
SIN
35h 50m
2 stops
Multiple Airlines Logo
11:55 pm - 1:45 pm
SIN
-
STL
27h 50m
1 stop
$1,559Multiple Airlines
Tue, Nov 24 - Tue, Dec 15
Qatar Airways Logo
9:39 am - 9:15 pm
STL
-
SIN
46h 36m
2 stops
Qatar Airways Logo
7:40 pm - 11:59 pm
SIN
-
STL
41h 19m
2 stops
$1,597Qatar Airways
Mon, Jul 13 - Mon, Jul 20

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Air Canada flights from St. Louis to Singapore

Our best Air Canada deals on St. Louis to Singapore flight tickets
Air Canada
Nov 24
STL4:15 pmLambert-St Louis
48h 45m
2 stops
SIN7:00 amSingapore Changi
Dec 15
SIN8:50 amSingapore Changi
44h 40m
2 stops
STL3:30 pmLambert-St Louis
$1,248
Air Canada
Jul 15
STL2:40 pmLambert-St Louis
65h 50m
2 stops
SIN9:30 pmSingapore Changi
Jul 20
SIN6:15 amSingapore Changi
44h 47m
2 stops
STL2:02 pmLambert-St Louis
$1,269
Air Canada
Jun 21
STL9:06 amLambert-St Louis
31h 09m
2 stops
SIN5:15 amSingapore Changi
Jun 23
SIN10:00 pmSingapore Changi
35h 07m
2 stops
STL8:07 pmLambert-St Louis
$1,970

Malaysia Airlines flights from St. Louis to Singapore

Our best Malaysia Airlines deals on St. Louis to Singapore flight tickets
Malaysia Airlines
Nov 24
STL7:00 amLambert-St Louis
44h 40m
2 stops
SIN5:40 pmSingapore Changi
Dec 15
SIN7:55 pmSingapore Changi
42h 02m
3 stops
STL11:57 pmLambert-St Louis
$2,730
Malaysia Airlines
Oct 28
STL6:30 amLambert-St Louis
47h 30m
2 stops
SIN7:00 pmSingapore Changi
Nov 11
SIN7:55 pmSingapore Changi
41h 47m
3 stops
STL11:42 pmLambert-St Louis
$2,821

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 June 20, 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

Wed 10/28

8:58 am-7:00 am

2 stops33h 02m

Singapore Changi

Wed 11/11

8:30 am-3:30 pm

2 stops45h 00m

$1,164

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Fri 9/11

11:01 am-8:50 am

2 stops32h 49m

Singapore Changi

Thu 9/17

3:15 am-12:27 am

2 stops34h 12m

$1,183

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 11/24

4:15 pm-7:00 am

2 stops48h 45m

Singapore Changi

Tue 12/15

8:50 am-3:30 pm

2 stops44h 40m

$1,248

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 7/15

2:40 pm-9:30 pm

2 stops65h 50m

Singapore Changi

Mon 7/20

6:15 am-2:02 pm

2 stops44h 47m

$1,269

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 8/9

6:00 am-11:45 am

2 stops40h 45m

Singapore Changi

Mon 8/24

12:45 pm-11:42 pm

2 stops47h 57m

$1,449

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 10/28

4:40 pm-5:45 pm

1 stop36h 05m

Singapore Changi

Wed 11/11

7:00 pm-11:56 pm

2 stops42h 56m

$1,471

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 7/13

9:39 am-9:15 pm

2 stops46h 36m

Singapore Changi

Thu 7/16

7:40 pm-12:16 am

2 stops41h 36m

$1,477
Quickest round-trip

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Wed 10/28

4:40 pm-5:05 pm

1 stop35h 25m

Singapore Changi

Tue 11/10

2:45 am-1:45 pm

1 stop25h 00m

$1,545

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Tue 11/24

4:15 pm-6:05 pm

2 stops35h 50m

Singapore Changi

Tue 12/15

11:55 pm-1:45 pm

1 stop27h 50m

$1,559

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Mon 7/13

9:39 am-9:15 pm

2 stops46h 36m

Singapore Changi

Mon 7/20

7:40 pm-11:59 pm

2 stops41h 19m

$1,597

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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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 $1,232.

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.

When to book flights from St. Louis to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Singapore according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Singapore (STL to SIN) flight deals and tips

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

Fastest flight time

21h 52m

Direct flights

None
The fastest flight from St. Louis to Singapore takes 21h 52m
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

  • How far is Lambert-St Louis to Singapore Changi by plane?

    Singapore Changi is 9530.1 mi away from Lambert-St Louis. In terms of flight time, this usually takes a little over 21h 52m.

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

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

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

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

    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 Changi Airport.

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

    The travel and health documents you'll need for your trip to Singapore Changi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Singapore Changi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Singapore?

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 $1,126Free CancellationRating
7.4
9,865 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Singapore for you.

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

All flight searches from St. Louis to Singapore on momondo can be filtered to show those which offer flexible booking policies.

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?

If you are simply researching potential flights to Singapore, momondo offers a useful price alert feature which will track prices for flights to Singapore from St. Louis and alert you when they change.

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