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Cheap flights from St. Louis to Brazil from $378

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 Brazil departing on 1/25. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
GOL Logo
10:00 am - 10:45 pm
STL
-
GRU
34h 45m2 stops
GOL Logo
6:00 am - 11:59 pm
GRU
-
STL
19h 59m2 stops
$694GOL
Fri, May 15 - Tue, May 26
GOL Logo
10:00 am - 5:45 pm
STL
-
CGH
29h 45m2 stops
GOL Logo
6:30 am - 11:59 pm
CGH
-
STL
19h 29m2 stops
$699GOL
Fri, May 15 - Tue, May 26
Air Canada Logo
4:05 pm - 11:05 am
STL
-
GIG
17h 00m1 stop
Air Canada Logo
8:00 pm - 3:29 pm
GIG
-
STL
21h 29m1 stop
$764Air Canada
Tue, Mar 17 - Wed, Mar 25
LATAM Airlines Logo
10:13 am - 6:25 am
STL
-
GIG
17h 12m2 stops
LATAM Airlines Logo
9:30 pm - 9:05 am
GIG
-
STL
13h 35m1 stop
$1,032LATAM Airlines
Tue, Feb 24 - Tue, Mar 10
Delta Logo
5:00 pm - 8:20 am
STL
-
GIG
12h 20m1 stop
Delta Logo
9:30 pm - 9:05 am
GIG
-
STL
13h 35m1 stop
$1,040Delta
Tue, Feb 24 - Tue, Mar 10
United Airlines Logo
6:00 am - 9:35 am
STL
-
GIG
24h 35m1 stop
United Airlines Logo
9:55 pm - 9:23 am
GIG
-
STL
14h 28m1 stop
$1,060United Airlines
Tue, Feb 10 - Tue, Feb 17
American Airlines Logo
5:35 am - 5:15 am
STL
-
GRU
21h 40m1 stop
American Airlines Logo
10:00 pm - 7:28 pm
GRU
-
STL
23h 28m1 stop
$1,080American Airlines
Fri, May 15 - Tue, May 26
LATAM Airlines Logo
5:21 pm - 9:35 am
STL
-
GRU
14h 14m1 stop
LATAM Airlines Logo
11:45 pm - 11:09 am
GRU
-
STL
13h 24m1 stop
$1,082LATAM Airlines
Tue, Mar 10 - Mon, Mar 23
United Airlines Logo
7:41 am - 4:20 pm
STL
-
POA
30h 39m2 stops
United Airlines Logo
3:30 pm - 9:21 am
POA
-
STL
19h 51m2 stops
$1,272United Airlines
Thu, Mar 19 - Mon, Mar 23
American Airlines Logo
3:37 pm - 5:45 pm
STL
-
POA
23h 08m2 stops
American Airlines Logo
7:30 pm - 2:47 pm
POA
-
STL
22h 17m2 stops
$1,340American Airlines
Thu, Jan 15 - Sat, Jan 24

LATAM Airlines flights from St. Louis to Brazil

Our best LATAM Airlines deals on St. Louis to Brazil flight tickets
LATAM Airlines
Feb 24
STL10:13 amLambert-St Louis
17h 12m
2 stops
GIG6:25 amRio de Janeiro–Galeão Intl
Mar 10
GIG7:15 amRio de Janeiro–Galeão Intl
18h 43m
2 stops
STL11:58 pmLambert-St Louis
$1,032
Find similar
LATAM Airlines
Feb 10
STL5:04 pmLambert-St Louis
18h 06m
2 stops
GIG2:10 pmRio de Janeiro–Galeão Intl
Feb 17
GIG7:15 amRio de Janeiro–Galeão Intl
19h 21m
2 stops
STL11:36 pmLambert-St Louis
$1,070
Find similar
LATAM Airlines
Mar 10
STL5:21 pmLambert-St Louis
14h 14m
1 stop
GRU9:35 amSao Paulo Guarulhos Intl
Mar 23
GRU11:45 pmSao Paulo Guarulhos Intl
13h 24m
1 stop
STL11:09 amLambert-St Louis
$1,082
Find similar

Air Canada flights from St. Louis to Brazil

Our best Air Canada deals on St. Louis to Brazil flight tickets
Air Canada
Mar 17
STL4:05 pmLambert-St Louis
17h 00m
1 stop
GIG11:05 amRio de Janeiro–Galeão Intl
Mar 25
GIG8:00 pmRio de Janeiro–Galeão Intl
21h 29m
1 stop
STL3:29 pmLambert-St Louis
$764
Find similar
Air Canada
Mar 17
STL4:05 pmLambert-St Louis
21h 05m
2 stops
GIG3:10 pmRio de Janeiro–Galeão Intl
Mar 25
GIG8:00 pmRio de Janeiro–Galeão Intl
21h 29m
1 stop
STL3:29 pmLambert-St Louis
$773
Find similar
Air Canada
Feb 24
STL4:05 pmLambert-St Louis
17h 00m
1 stop
GIG12:05 pmRio de Janeiro–Galeão Intl
Mar 10
GIG3:55 pmRio de Janeiro–Galeão Intl
25h 34m
2 stops
STL3:29 pmLambert-St Louis
$850
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Brazil 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 23, 2025.
Use the filters below to find and compare flights from St. Louis to Brazil that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSao Paulo

STL - GRU

STLGRU

Lambert-St Louis

Fri 5/15

10:00 am-10:45 pm

2 stops34h 45m

Sao Paulo Guarulhos Intl

Tue 5/26

6:00 am-11:59 pm

2 stops19h 59m

$694

St. LouisSao Paulo

STL - CGH

STLCGH

Lambert-St Louis

Fri 5/15

10:00 am-5:45 pm

2 stops29h 45m

Sao Paulo Congonhas

Tue 5/26

6:30 am-11:59 pm

2 stops19h 29m

$699

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Tue 3/17

4:05 pm-11:05 am

1 stop17h 00m

Rio de Janeiro–Galeão Intl

Wed 3/25

8:00 pm-3:29 pm

1 stop21h 29m

$764

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Tue 2/24

10:13 am-6:25 am

2 stops17h 12m

Rio de Janeiro–Galeão Intl

Tue 3/10

9:30 pm-9:05 am

1 stop13h 35m

$1,032

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Tue 2/24

5:00 pm-8:20 am

1 stop12h 20m

Rio de Janeiro–Galeão Intl

Tue 3/10

9:30 pm-9:05 am

1 stop13h 35m

$1,040

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Tue 2/10

6:00 am-9:35 am

1 stop24h 35m

Rio de Janeiro–Galeão Intl

Tue 2/17

9:55 pm-9:23 am

1 stop14h 28m

$1,060

St. LouisSao Paulo

STL - GRU

STLGRU

Lambert-St Louis

Fri 5/15

5:35 am-5:15 am

1 stop21h 40m

Sao Paulo Guarulhos Intl

Tue 5/26

10:00 pm-7:28 pm

1 stop23h 28m

$1,080

St. LouisSao Paulo

STL - GRU

STLGRU

Lambert-St Louis

Tue 3/10

5:21 pm-9:35 am

1 stop14h 14m

Sao Paulo Guarulhos Intl

Mon 3/23

11:45 pm-11:09 am

1 stop13h 24m

$1,082

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Thu 3/19

7:41 am-4:20 pm

2 stops30h 39m

Porto Alegre Salgado Filho

Mon 3/23

3:30 pm-9:21 am

2 stops19h 51m

$1,272

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Thu 1/15

3:37 pm-5:45 pm

2 stops23h 08m

Porto Alegre Salgado Filho

Sat 1/24

7:30 pm-2:47 pm

2 stops22h 17m

$1,340

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Brazil from

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

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 Brazil?

If you are unable to visit Brazil during the month of April, then departing from St. Louis during the month May is also very affordable. Most momondo users find prices during this month for around $831.

What is the cheapest day to depart on your flight to Brazil?

The cheapest day to depart from St. Louis to Brazil is on a Tuesday. Travelers who choose to depart for Brazil on a Tuesday will often find tickets for as low as $949. The most expensive day to fly to Brazil is Sunday, with ticket prices averaging around $1,206.

What is the cheapest time of day to depart on your flight to Brazil?

Flying to Brazil from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,059 when looking at flights departing in the afternoon. In contrast, the most expensive time of day to depart to Brazil is at noon when prices are around $1,179.

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

You could potentially save up to 28% on your flight if you consider stops on a St. Louis to Brazil flight.

Cheap St. Louis to Brazil flight deals and tips

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

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from St. Louis to Brazil takes 13h 50m
There are no direct flights from St. Louis to Brazil. There are no popular flight routes from St. Louis to Brazil.
Search flight deals

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

    Prices for flights from Lambert-St Louis Airport to Brazil are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Brazil.

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

    The travel and health documents required for your trip to Brazil can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Brazil. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Brazil

Compare and see reviews for airlines that fly from St. Louis to Brazil with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $711Free CancellationRating
7.9
8,014 reviews
Search Delta flights
LATAM AirlinesPriceFrom $756Free CancellationRating
7.5
1,894 reviews
Search LATAM Airlines flights
Air CanadaPriceFrom $758Free CancellationRating
7.1
10,551 reviews
Search Air Canada flights
American AirlinesPriceFrom $761Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $938Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Brazil. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Brazil from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between St. Louis and Brazil 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 Brazil right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Brazil now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Brazil and let you know when they change.

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