How do I get Price Alerts for flights from St. Louis to Rio de Janeiro Santos Dumont Airport?

You can take advantage of momondo’s Price Alerts by first searching for your flights to St. Louis from Rio de Janeiro Santos Dumont Airport . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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.

$597 Cheap Flights from St. Louis to Rio de Janeiro Santos Dumont Airport in 2026

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Find the cheapest flights from St. Louis to Rio de Janeiro

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:06 am - 10:55 am

STL

SDU

21h 49m

2 stops

8:50 pm - 10:24 pm

SDU

STL

27h 34m

2 stops

$1,180GOL

Mon, Apr 27 - Mon, May 4

11:48 am - 10:50 am

STL

SDU

21h 02m

2 stops

6:00 am - 11:12 pm

SDU

STL

19h 12m

2 stops

$1,341GOL

Tue, Sep 8 - Tue, Sep 15

9:10 am - 4:45 pm

STL

SDU

29h 35m

2 stops

1:50 pm - 9:25 am

SDU

STL

21h 35m

2 stops

$1,491United Airlines

Mon, Apr 20 - Mon, Apr 27

6:55 pm - 4:45 pm

STL

SDU

19h 50m

2 stops

1:45 pm - 9:30 am

SDU

STL

21h 45m

2 stops

$1,507Air Canada

Tue, Apr 28 - Tue, May 5

5:41 pm - 4:45 pm

STL

SDU

21h 04m

2 stops

5:30 pm - 10:45 am

SDU

STL

19h 15m

2 stops

$1,604United Airlines

Wed, Mar 25 - Sat, Mar 28

6:55 pm - 4:45 pm

STL

SDU

19h 50m

2 stops

1:50 pm - 9:25 am

SDU

STL

21h 35m

2 stops

$1,641Multiple Airlines

Mon, Apr 20 - Mon, Apr 27

11:06 am - 10:55 am

STL

SDU

21h 49m

2 stops

8:50 pm - 10:53 pm

SDU

STL

28h 03m

2 stops

$1,718GOL

Fri, Apr 24 - Fri, May 1

4:05 pm - 1:10 pm

STL

SDU

19h 05m

2 stops

1:50 pm - 3:25 pm

SDU

STL

27h 35m

3 stops

$1,789Multiple Airlines

Mon, Apr 20 - Mon, Apr 27

6:15 am - 11:10 am

STL

SDU

26h 55m

2 stops

5:30 pm - 9:30 am

SDU

STL

18h 00m

2 stops

$1,844Multiple Airlines

Sat, Apr 25 - Sat, May 2

4:05 pm - 7:15 am

STL

SDU

37h 10m

2 stops

8:30 am - 12:06 pm

SDU

STL

29h 36m

2 stops

$2,080Multiple Airlines

Sun, Apr 26 - Sun, May 3

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

Apr 27

STL11:06 amLambert-St Louis

21h 49m

2 stops

SDU10:55 amRio de Janeiro Santos Dumont

May 4

SDU8:50 pmRio de Janeiro Santos Dumont

27h 34m

2 stops

STL10:24 pmLambert-St Louis

$1,180

GOL

Sep 8

STL11:48 amLambert-St Louis

21h 02m

2 stops

SDU10:50 amRio de Janeiro Santos Dumont

Sep 15

SDU6:00 amRio de Janeiro Santos Dumont

19h 12m

2 stops

STL11:12 pmLambert-St Louis

$1,341

GOL

Apr 24

STL11:06 amLambert-St Louis

21h 49m

2 stops

SDU10:55 amRio de Janeiro Santos Dumont

May 1

SDU8:50 pmRio de Janeiro Santos Dumont

28h 03m

2 stops

STL10:53 pmLambert-St Louis

$1,718

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

Our best United Airlines deals on St. Louis to Rio de Janeiro Santos Dumont Airport flight tickets

United Airlines

Apr 20

STL9:10 amLambert-St Louis

29h 35m

2 stops

SDU4:45 pmRio de Janeiro Santos Dumont

Apr 27

SDU1:50 pmRio de Janeiro Santos Dumont

21h 35m

2 stops

STL9:25 amLambert-St Louis

$1,491

United Airlines

Mar 25

STL5:41 pmLambert-St Louis

21h 04m

2 stops

SDU4:45 pmRio de Janeiro Santos Dumont

Mar 28

SDU5:30 pmRio de Janeiro Santos Dumont

19h 15m

2 stops

STL10:45 amLambert-St Louis

$1,604

United Airlines

Mar 16

STL4:47 pmLambert-St Louis

21h 58m

2 stops

SDU4:45 pmRio de Janeiro Santos Dumont

Mar 18

SDU1:50 pmRio de Janeiro Santos Dumont

21h 31m

2 stops

STL9:21 amLambert-St Louis

$1,801

momondo Fare Finder

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

Cheapest round-trip

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 4/27

11:06 am-10:55 am

2 stops21h 49m

Rio de Janeiro Santos Dumont

Mon 5/4

8:50 pm-10:24 pm

2 stops27h 34m

$1,180

Quickest round-trip

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Tue 9/8

11:48 am-10:50 am

2 stops21h 02m

Rio de Janeiro Santos Dumont

Tue 9/15

6:00 am-11:12 pm

2 stops19h 12m

$1,341

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 4/20

9:10 am-4:45 pm

2 stops29h 35m

Rio de Janeiro Santos Dumont

Mon 4/27

1:50 pm-9:25 am

2 stops21h 35m

$1,491

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Tue 4/28

6:55 pm-4:45 pm

2 stops19h 50m

Rio de Janeiro Santos Dumont

Tue 5/5

1:45 pm-9:30 am

2 stops21h 45m

$1,507

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Wed 3/25

5:41 pm-4:45 pm

2 stops21h 04m

Rio de Janeiro Santos Dumont

Sat 3/28

5:30 pm-10:45 am

2 stops19h 15m

$1,604

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 4/20

6:55 pm-4:45 pm

2 stops19h 50m

Rio de Janeiro Santos Dumont

Mon 4/27

1:50 pm-9:25 am

2 stops21h 35m

$1,641

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Fri 4/24

11:06 am-10:55 am

2 stops21h 49m

Rio de Janeiro Santos Dumont

Fri 5/1

8:50 pm-10:53 pm

2 stops28h 03m

$1,718

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 4/20

4:05 pm-1:10 pm

2 stops19h 05m

Rio de Janeiro Santos Dumont

Mon 4/27

1:50 pm-3:25 pm

3 stops27h 35m

$1,789

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sat 4/25

6:15 am-11:10 am

2 stops26h 55m

Rio de Janeiro Santos Dumont

Sat 5/2

5:30 pm-9:30 am

2 stops18h 00m

$1,844

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sun 4/26

4:05 pm-7:15 am

2 stops37h 10m

Rio de Janeiro Santos Dumont

Sun 5/3

8:30 am-12:06 pm

2 stops29h 36m

$2,080

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

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	21h 23m
Direct flights	None

The fastest flight from St. Louis to Rio de Janeiro Santos Dumont Airport takes 21h 23m

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 21h 23m 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.

How do I get Price Alerts for flights from St. Louis to Rio de Janeiro Santos Dumont Airport?
You can take advantage of momondo’s Price Alerts by first searching for your flights to St. Louis from Rio de Janeiro Santos Dumont Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from St. Louis to Rio de Janeiro Santos Dumont Airport with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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.

An easier way to manage your Rio de Janeiro Santos Dumont Airport trip

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Cheap flights from St. Louis to Rio de Janeiro from $597

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 5/15. 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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GOL flights from St. Louis to Rio de Janeiro Santos Dumont Airport

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

Our best United Airlines deals on St. Louis to Rio de Janeiro Santos Dumont Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Rio de Janeiro Santos Dumont Airport that are best for you.

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

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

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Why use momondo?

An easier way to manage your Rio de Janeiro Santos Dumont Airport 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Rio de Janeiro

Popular cities in Brazil

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List of cabin classes available on flights landing in Rio de Janeiro. Availability may vary depending on flight origin and airline.

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