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Cheap flights from St. Louis to Rio de Janeiro from $310

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 Rio de Janeiro departing on 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
GOL Logo
3:22 pm - 10:45 am
STL
-
SDU
17h 23m2 stops
GOL Logo
8:25 pm - 9:51 pm
SDU
-
STL
27h 26m2 stops
$931GOL
Wed, Mar 11 - Thu, Mar 12
Multiple Airlines Logo
4:05 pm - 4:40 pm
STL
-
SDU
22h 35m2 stops
Multiple Airlines Logo
1:45 pm - 3:29 pm
SDU
-
STL
27h 44m2 stops
$968Multiple Airlines
Mon, Mar 9 - Tue, Mar 24
GOL Logo
11:19 am - 10:45 am
STL
-
SDU
20h 26m2 stops
GOL Logo
8:25 pm - 10:05 pm
SDU
-
STL
28h 40m2 stops
$1,108GOL
Sun, Mar 1 - Mon, Mar 2
Air Canada Logo
4:05 pm - 4:40 pm
STL
-
SDU
22h 35m2 stops
Air Canada Logo
1:45 pm - 3:29 pm
SDU
-
STL
27h 44m2 stops
$1,141Air Canada
Sun, Mar 22 - Thu, Mar 26
GOL Logo
11:00 am - 10:45 am
STL
-
SDU
20h 45m2 stops
GOL Logo
8:25 pm - 9:51 pm
SDU
-
STL
27h 26m2 stops
$1,233GOL
Sat, Mar 7 - Sun, Mar 8
United Airlines Logo
10:00 am - 4:40 pm
STL
-
SDU
28h 40m2 stops
United Airlines Logo
1:45 pm - 12:27 pm
SDU
-
STL
24h 42m2 stops
$1,296United Airlines
Sun, Mar 22 - Thu, Mar 26
Multiple Airlines Logo
4:05 pm - 2:10 pm
STL
-
SDU
19h 05m2 stops
Multiple Airlines Logo
11:20 am - 3:29 pm
SDU
-
STL
31h 09m2 stops
$1,300Multiple Airlines
Mon, Jan 26 - Mon, Feb 2
United Airlines Logo
9:57 am - 2:30 pm
STL
-
SDU
25h 33m2 stops
United Airlines Logo
2:50 pm - 9:00 pm
SDU
-
STL
33h 10m2 stops
$1,303United Airlines
Wed, Feb 11 - Sun, Feb 15
United Airlines Logo
6:34 pm - 4:40 pm
STL
-
SDU
43h 06m2 stops
United Airlines Logo
5:30 pm - 9:00 pm
SDU
-
STL
29h 30m2 stops
$1,310United Airlines
Sat, Mar 7 - Sat, Mar 21
GOL Logo
3:37 pm - 1:45 pm
STL
-
SDU
19h 08m2 stops
GOL Logo
4:35 pm - 8:51 am
SDU
-
STL
19h 16m2 stops
$1,334GOL
Thu, Jan 8 - Thu, Jan 22

GOL flights from St. Louis to Rio de Janeiro Santos Dumont Airport

Our best GOL deals on St. Louis to Rio de Janeiro Santos Dumont Airport flight tickets
GOL
Mar 11
STL3:22 pmLambert-St Louis
17h 23m
2 stops
SDU10:45 amRio de Janeiro Santos Dumont
Mar 12
SDU8:25 pmRio de Janeiro Santos Dumont
27h 26m
2 stops
STL9:51 pmLambert-St Louis
$931
Find similar
GOL
Mar 1
STL11:19 amLambert-St Louis
20h 26m
2 stops
SDU10:45 amRio de Janeiro Santos Dumont
Mar 2
SDU8:25 pmRio de Janeiro Santos Dumont
28h 40m
2 stops
STL10:05 pmLambert-St Louis
$1,108
Find similar
GOL
Mar 7
STL11:00 amLambert-St Louis
20h 45m
2 stops
SDU10:45 amRio de Janeiro Santos Dumont
Mar 8
SDU8:25 pmRio de Janeiro Santos Dumont
27h 26m
2 stops
STL9:51 pmLambert-St Louis
$1,233
Find similar

Air Canada flights from St. Louis to Rio de Janeiro Santos Dumont Airport

Our best Air Canada deals on St. Louis to Rio de Janeiro Santos Dumont Airport flight tickets
Air Canada
Mar 22
STL4:05 pmLambert-St Louis
22h 35m
2 stops
SDU4:40 pmRio de Janeiro Santos Dumont
Mar 26
SDU1:45 pmRio de Janeiro Santos Dumont
27h 44m
2 stops
STL3:29 pmLambert-St Louis
$1,141
Find similar
Air Canada
Feb 1
STL4:05 pmLambert-St Louis
19h 25m
2 stops
SDU2:30 pmRio de Janeiro Santos Dumont
Feb 7
SDU11:20 amRio de Janeiro Santos Dumont
31h 09m
3 stops
STL3:29 pmLambert-St Louis
$1,911
Find similar
Air Canada
Jun 3
STL9:10 amLambert-St Louis
29h 35m
3 stops
SDU4:45 pmRio de Janeiro Santos Dumont
Jun 17
SDU1:45 pmRio de Janeiro Santos Dumont
27h 31m
2 stops
STL3:16 pmLambert-St Louis
$2,555
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Rio de Janeiro Santos Dumont Airport 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 December 11, 2025.
Use the filters below to find and compare flights from St. Louis to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Wed 3/11

3:22 pm-10:45 am

2 stops17h 23m

Rio de Janeiro Santos Dumont

Thu 3/12

8:25 pm-9:51 pm

2 stops27h 26m

$931

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 3/9

4:05 pm-4:40 pm

2 stops22h 35m

Rio de Janeiro Santos Dumont

Tue 3/24

1:45 pm-3:29 pm

2 stops27h 44m

$968

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sun 3/1

11:19 am-10:45 am

2 stops20h 26m

Rio de Janeiro Santos Dumont

Mon 3/2

8:25 pm-10:05 pm

2 stops28h 40m

$1,108

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sun 3/22

4:05 pm-4:40 pm

2 stops22h 35m

Rio de Janeiro Santos Dumont

Thu 3/26

1:45 pm-3:29 pm

2 stops27h 44m

$1,141

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sat 3/7

11:00 am-10:45 am

2 stops20h 45m

Rio de Janeiro Santos Dumont

Sun 3/8

8:25 pm-9:51 pm

2 stops27h 26m

$1,233

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sun 3/22

10:00 am-4:40 pm

2 stops28h 40m

Rio de Janeiro Santos Dumont

Thu 3/26

1:45 pm-12:27 pm

2 stops24h 42m

$1,296

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 1/26

4:05 pm-2:10 pm

2 stops19h 05m

Rio de Janeiro Santos Dumont

Mon 2/2

11:20 am-3:29 pm

2 stops31h 09m

$1,300

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Wed 2/11

9:57 am-2:30 pm

2 stops25h 33m

Rio de Janeiro Santos Dumont

Sun 2/15

2:50 pm-9:00 pm

2 stops33h 10m

$1,303

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sat 3/7

6:34 pm-4:40 pm

2 stops43h 06m

Rio de Janeiro Santos Dumont

Sat 3/21

5:30 pm-9:00 pm

2 stops29h 30m

$1,310

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Thu 1/8

3:37 pm-1:45 pm

2 stops19h 08m

Rio de Janeiro Santos Dumont

Thu 1/22

4:35 pm-8:51 am

2 stops19h 16m

$1,334

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to Rio de Janeiro Santos Dumont Airport

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 airline that flies from Lambert-St Louis to Rio de Janeiro Santos Dumont?

GOL is the most popular carrier operating from Lambert-St Louis to Rio de Janeiro Santos Dumont

When to book flights from St. Louis to Rio de Janeiro Santos Dumont Airport

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

Cheap St. Louis to Rio de Janeiro Santos Dumont Airport (STL to SDU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Rio de Janeiro Santos Dumont Airport

Fastest flight time

17h 00m

Direct flights

None
The fastest flight from St. Louis to Rio de Janeiro Santos Dumont Airport takes 17h 00m
There are no direct flights from St. Louis to Rio de Janeiro Santos Dumont Airport. There are no popular flight routes from St. Louis to Rio de Janeiro Santos Dumont Airport.
Search flight deals

  • How far is Lambert-St Louis to Rio de Janeiro Santos Dumont by plane?

    Lambert-St Louis and Rio de Janeiro Santos Dumont are 5225.0 mi apart from one another. Typically, this will take 17h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Rio de Janeiro Santos Dumont Airport?

    Prices for flights from Lambert-St Louis Airport to Rio de Janeiro Santos Dumont Airport are updated daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Rio de Janeiro Santos Dumont 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 Rio de Janeiro Santos Dumont Airport.

  • What documentation or ID do you need to fly to Rio de Janeiro Santos Dumont Airport?

    The required travel and health documents for your Rio de Janeiro Santos Dumont Airport 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 Rio de Janeiro Santos Dumont Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Rio de Janeiro?

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 Rio de Janeiro for you.

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

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

How can momondo help me find flights from St. Louis to Rio de Janeiro?

momondo helps you find the best flight between St. Louis and Rio de Janeiro by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of St. Louis to Rio de Janeiro flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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