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Cheap flights from St. Louis to Rio de Janeiro from $337

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 12/3. 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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Find the cheapest flights from St. Louis to Rio de Janeiro

Cheap round-trip flights

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Air Canada Logo
4:05 pm - 12:05 pmSTL-GIG
17h 00m1 stop
Air Canada Logo
8:00 pm - 3:29 pmGIG-STL
21h 29m1 stop
$769Air Canada
Find Deal
Thu, Mar 5 - Wed, Mar 11
Air Canada Logo
4:05 pm - 12:05 pmSTL-GIG
17h 00m1 stop
Air Canada Logo
3:55 pm - 3:29 pmGIG-STL
25h 34m2 stops
$775Air Canada
Find Deal
Thu, Mar 5 - Wed, Mar 11
Air Canada Logo
4:05 pm - 12:05 pmSTL-GIG
17h 00m1 stop
Air Canada Logo
8:00 pm - 3:29 pmGIG-STL
21h 29m1 stop
$844Air Canada
Find Deal
Thu, Mar 5 - Fri, Mar 13
Air Canada Logo
4:05 pm - 12:05 pmSTL-GIG
17h 00m1 stop
Air Canada Logo
3:55 pm - 3:29 pmGIG-STL
25h 34m2 stops
$848Air Canada
Find Deal
Tue, Feb 24 - Tue, Mar 10
Air Canada Logo
4:05 pm - 12:05 pmSTL-GIG
17h 00m1 stop
Air Canada Logo
3:55 pm - 3:29 pmGIG-STL
25h 34m2 stops
$850Air Canada
Find Deal
Thu, Mar 5 - Tue, Mar 17
Air Canada Logo
4:05 pm - 3:10 pmSTL-GIG
21h 05m2 stops
Air Canada Logo
3:55 pm - 3:29 pmGIG-STL
25h 34m2 stops
$856Air Canada
Find Deal
Mon, Mar 9 - Tue, Mar 17
GOL Logo
11:19 am - 10:45 amSTL-SDU
20h 26m2 stops
GOL Logo
6:00 am - 11:37 pmSDU-STL
19h 37m2 stops
$1,100GOL
Find Deal
Fri, Mar 6 - Sat, Mar 14
GOL Logo
11:17 am - 4:55 pmSTL-SDU
26h 38m2 stops
GOL Logo
6:00 am - 11:37 pmSDU-STL
19h 37m2 stops
$1,132GOL
Find Deal
Sat, Mar 7 - Sat, Mar 14
LATAM Airlines Logo
5:00 pm - 1:15 pmSTL-SDU
17h 15m2 stops
LATAM Airlines Logo
2:00 pm - 11:05 amSDU-STL
24h 05m2 stops
$1,698LATAM Airlines
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Sat, Jan 10 - Sat, Jan 17
GOL Logo
6:02 pm - 10:45 amSTL-SDU
37h 43m2 stops
GOL Logo
5:40 pm - 9:08 amSDU-STL
18h 28m2 stops
$1,764GOL
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Mon, Jan 12 - Mon, Jan 19

Air Canada flights from St. Louis to Rio de Janeiro

Our best Air Canada deals on St. Louis to Rio de Janeiro flight tickets
Air Canada
Mar 5
STL4:05 pmLambert-St Louis
17h 00m
1 stop
GIG12:05 pmRio de Janeiro–Galeão Intl
Mar 11
GIG8:00 pmRio de Janeiro–Galeão Intl
21h 29m
1 stop
STL3:29 pmLambert-St Louis
$769
Find similar
Air Canada
Mar 5
STL4:05 pmLambert-St Louis
17h 00m
1 stop
GIG12:05 pmRio de Janeiro–Galeão Intl
Mar 11
GIG3:55 pmRio de Janeiro–Galeão Intl
25h 34m
2 stops
STL3:29 pmLambert-St Louis
$775
Find similar
Air Canada
Mar 5
STL4:05 pmLambert-St Louis
17h 00m
1 stop
GIG12:05 pmRio de Janeiro–Galeão Intl
Mar 13
GIG8:00 pmRio de Janeiro–Galeão Intl
21h 29m
1 stop
STL3:29 pmLambert-St Louis
$844
Find similar

LATAM Airlines flights from St. Louis to Rio de Janeiro

Our best LATAM Airlines deals on St. Louis to Rio de Janeiro flight tickets
LATAM Airlines
Jan 13
STL6:00 amLambert-St Louis
21h 25m
2 stops
GIG6:25 amRio de Janeiro–Galeão Intl
Jan 21
GIG3:10 pmRio de Janeiro–Galeão Intl
22h 54m
2 stops
STL11:04 amLambert-St Louis
$1,032
Find similar
LATAM Airlines
Jan 14
STL9:59 amLambert-St Louis
17h 26m
2 stops
GIG6:25 amRio de Janeiro–Galeão Intl
Jan 21
GIG10:55 pmRio de Janeiro–Galeão Intl
21h 55m
2 stops
STL5:50 pmLambert-St Louis
$1,037
Find similar
LATAM Airlines
Mar 4
STL5:00 pmLambert-St Louis
12h 20m
1 stop
GIG8:20 amRio de Janeiro–Galeão Intl
Mar 13
GIG9:30 pmRio de Janeiro–Galeão Intl
16h 15m
1 stop
STL11:45 amLambert-St Louis
$1,071
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Rio de Janeiro 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 November 26, 2025.
Use the filters below to find and compare flights from St. Louis to Rio de Janeiro that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 3/5

4:05 pm-12:05 pm

1 stop17h 00m

Rio de Janeiro–Galeão Intl

Wed 3/11

8:00 pm-3:29 pm

1 stop21h 29m

$769

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 3/5

4:05 pm-12:05 pm

1 stop17h 00m

Rio de Janeiro–Galeão Intl

Wed 3/11

3:55 pm-3:29 pm

2 stops25h 34m

$775

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 3/5

4:05 pm-12:05 pm

1 stop17h 00m

Rio de Janeiro–Galeão Intl

Fri 3/13

8:00 pm-3:29 pm

1 stop21h 29m

$844

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Tue 2/24

4:05 pm-12:05 pm

1 stop17h 00m

Rio de Janeiro–Galeão Intl

Tue 3/10

3:55 pm-3:29 pm

2 stops25h 34m

$848

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 3/5

4:05 pm-12:05 pm

1 stop17h 00m

Rio de Janeiro–Galeão Intl

Tue 3/17

3:55 pm-3:29 pm

2 stops25h 34m

$850

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Mon 3/9

4:05 pm-3:10 pm

2 stops21h 05m

Rio de Janeiro–Galeão Intl

Tue 3/17

3:55 pm-3:29 pm

2 stops25h 34m

$856

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Fri 3/6

11:19 am-10:45 am

2 stops20h 26m

Rio de Janeiro Santos Dumont

Sat 3/14

6:00 am-11:37 pm

2 stops19h 37m

$1,100

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sat 3/7

11:17 am-4:55 pm

2 stops26h 38m

Rio de Janeiro Santos Dumont

Sat 3/14

6:00 am-11:37 pm

2 stops19h 37m

$1,132

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sat 1/10

5:00 pm-1:15 pm

2 stops17h 15m

Rio de Janeiro Santos Dumont

Sat 1/17

2:00 pm-11:05 am

2 stops24h 05m

$1,698

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 1/12

6:02 pm-10:45 am

2 stops37h 43m

Rio de Janeiro Santos Dumont

Mon 1/19

5:40 pm-9:08 am

2 stops18h 28m

$1,764

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 Rio de Janeiro from

How to get the cheapest flight ticket from St. Louis to Rio de Janeiro

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 Rio de Janeiro?

The cheapest month to fly to Rio de Janeiro from St. Louis is in May. Flight prices, which tend to average around $763, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Rio de Janeiro, with average flight prices from St. Louis averaging around $853.

What is the cheapest day to depart on your flight to Rio de Janeiro?

According to our data, Tuesday is the cheapest day to fly to Rio de Janeiro from St. Louis. The lowest ticket price found for a Tuesday departure recently was $723. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Wednesday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,396.

What is the cheapest time of day to depart on your flight to Rio de Janeiro?

At noon is the cheapest time of day to fly from St. Louis to Rio de Janeiro when you can find flight prices for as low as $1,032. Flying to Rio de Janeiro at noon is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Rio de Janeiro, so prices are often more expensive at around $1,138 per ticket.

When to book flights from St. Louis to Rio de Janeiro

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Rio de Janeiro 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 (STL to RIO) flight deals and tips

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

Fastest flight time

14h 00m

Direct flights

None
The fastest flight from St. Louis to Rio de Janeiro takes 14h 00m
There are no direct flights from St. Louis to Rio de Janeiro. There are no popular flight routes from St. Louis to Rio de Janeiro.
Search flight deals

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

    There are 5224.0 mi between Lambert-St Louis and Rio de Janeiro. In terms of flight time, this usually takes a little over 12h 20m.

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

    Prices for flights from Lambert-St Louis Airport to Rio de Janeiro were last updated today.

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

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

    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.

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

    The necessary travel and health documents for your Rio de Janeiro trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Rio de Janeiro?

Best airlines flying from St. Louis to Rio de Janeiro

Compare and see reviews for airlines that fly from St. Louis to Rio de Janeiro with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $711Free CancellationRating
7.9
7,998 reviews
Search Delta flights

Why use momondo?

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

It is quick and easy to find St. Louis to Rio de Janeiro flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Rio de Janeiro that suits you.

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

Yes. momondo allows you to filter the results for St. Louis to Rio de Janeiro flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Rio de Janeiro from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for St. Louis to Rio de Janeiro 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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Find better results for your trip to Brazil

Fly into one of these airports located in Rio de Janeiro

Airports listed have a maximum distance of 8.1 mi from Rio de Janeiro
Rio de Janeiro–Galeão Intl Airport
Rio de Janeiro Santos Dumont Airport