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Cheap flights from St. Louis to Rio de Janeiro from $489

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 12/18. 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

Air Canada Logo
4:05 pm - 1:50 pmSTL-GIG
19h 45m2 stops
Air Canada Logo
3:55 pm - 7:57 pmGIG-STL
30h 02m2 stops
$774Air Canada
Find Deal
Mon, Sep 15 - Wed, Sep 24
Air Canada Logo
4:05 pm - 2:20 pmSTL-SDU
20h 15m2 stops
Air Canada Logo
11:25 am - 7:57 pmSDU-STL
34h 32m2 stops
$779Air Canada
Find Deal
Mon, Sep 15 - Wed, Sep 24
Air Canada Logo
9:15 am - 2:20 pmSTL-SDU
27h 05m2 stops
Air Canada Logo
11:25 am - 3:18 pmSDU-STL
29h 53m2 stops
$861Air Canada
Find Deal
Sun, Sep 14 - Tue, Sep 23
United Airlines Logo
8:20 am - 8:15 amSTL-GIG
21h 55m1 stop
United Airlines Logo
9:05 pm - 4:28 pmGIG-STL
21h 23m1 stop
$1,190United Airlines
Find Deal
Mon, Sep 15 - Wed, Sep 24
United Airlines Logo
8:20 am - 8:15 amSTL-GIG
21h 55m1 stop
United Airlines Logo
9:05 pm - 2:26 pmGIG-STL
19h 21m1 stop
$1,194United Airlines
Find Deal
Sun, Sep 14 - Tue, Sep 23
Delta Logo
11:04 am - 6:10 amSTL-GIG
17h 06m2 stops
Delta Logo
9:00 pm - 4:05 pmGIG-STL
21h 05m1 stop
$1,198Delta
Find Deal
Sun, Sep 14 - Tue, Sep 23
American Airlines Logo
9:07 am - 8:30 amSTL-GIG
21h 23m2 stops
American Airlines Logo
11:00 pm - 4:15 pmGIG-STL
19h 15m2 stops
$1,199American Airlines
Find Deal
Sun, Sep 14 - Tue, Sep 23
Delta Logo
7:20 am - 6:25 amSTL-GIG
20h 05m2 stops
Delta Logo
9:30 pm - 4:11 pmGIG-STL
21h 41m1 stop
$1,329Delta
Find Deal
Thu, Dec 18 - Sun, Dec 28
LATAM Airlines Logo
9:00 am - 6:25 amSTL-GIG
42h 25m2 stops
LATAM Airlines Logo
2:25 am - 9:04 amGIG-STL
33h 39m2 stops
$1,951LATAM Airlines
Find Deal
Thu, Dec 18 - Sun, Jan 11
LATAM Airlines Logo
4:00 pm - 8:20 amSTL-GIG
13h 20m1 stop
LATAM Airlines Logo
9:30 pm - 10:50 amGIG-STL
16h 20m1 stop
$5,802LATAM Airlines
Find Deal
Thu, Feb 12 - Tue, Feb 17

Delta flights from St. Louis to Rio de Janeiro

Our best Delta deals on St. Louis to Rio de Janeiro flight tickets
Delta
Sep 14
STL11:04 amLambert-St Louis
17h 06m
2 stops
GIG6:10 amRio de Janeiro–Galeão Intl
Sep 23
GIG9:00 pmRio de Janeiro–Galeão Intl
21h 05m
1 stop
STL4:05 pmLambert-St Louis
$1,198
Find similar
Delta
Dec 18
STL7:20 amLambert-St Louis
20h 05m
2 stops
GIG6:25 amRio de Janeiro–Galeão Intl
Dec 28
GIG9:30 pmRio de Janeiro–Galeão Intl
21h 41m
1 stop
STL4:11 pmLambert-St Louis
$1,329
Find similar
Delta
Dec 18
STL7:20 amLambert-St Louis
20h 05m
2 stops
GIG6:25 amRio de Janeiro–Galeão Intl
Jan 12
GIG5:15 pmRio de Janeiro–Galeão Intl
18h 49m
2 stops
STL9:04 amLambert-St Louis
$1,540
Find similar

United Airlines flights from St. Louis to Rio de Janeiro

Our best United Airlines deals on St. Louis to Rio de Janeiro flight tickets
United Airlines
Sep 15
STL8:20 amLambert-St Louis
21h 55m
1 stop
GIG8:15 amRio de Janeiro–Galeão Intl
Sep 24
GIG9:05 pmRio de Janeiro–Galeão Intl
21h 23m
1 stop
STL4:28 pmLambert-St Louis
$1,190
Find similar
United Airlines
Sep 14
STL8:20 amLambert-St Louis
21h 55m
1 stop
GIG8:15 amRio de Janeiro–Galeão Intl
Sep 23
GIG9:05 pmRio de Janeiro–Galeão Intl
19h 21m
1 stop
STL2:26 pmLambert-St Louis
$1,194
Find similar
United Airlines
Aug 20
STL11:05 amLambert-St Louis
19h 10m
1 stop
GIG8:15 amRio de Janeiro–Galeão Intl
Aug 22
GIG9:05 pmRio de Janeiro–Galeão Intl
19h 27m
2 stops
STL2:32 pmLambert-St Louis
$1,485
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 August 18, 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

Mon 9/15

4:05 pm-1:50 pm

2 stops19h 45m

Rio de Janeiro–Galeão Intl

Wed 9/24

3:55 pm-7:57 pm

2 stops30h 02m

$774

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Mon 9/15

4:05 pm-2:20 pm

2 stops20h 15m

Rio de Janeiro Santos Dumont

Wed 9/24

11:25 am-7:57 pm

2 stops34h 32m

$779

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Sun 9/14

9:15 am-2:20 pm

2 stops27h 05m

Rio de Janeiro Santos Dumont

Tue 9/23

11:25 am-3:18 pm

2 stops29h 53m

$861

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Mon 9/15

8:20 am-8:15 am

1 stop21h 55m

Rio de Janeiro–Galeão Intl

Wed 9/24

9:05 pm-4:28 pm

1 stop21h 23m

$1,190

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Sun 9/14

8:20 am-8:15 am

1 stop21h 55m

Rio de Janeiro–Galeão Intl

Tue 9/23

9:05 pm-2:26 pm

1 stop19h 21m

$1,194

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Sun 9/14

11:04 am-6:10 am

2 stops17h 06m

Rio de Janeiro–Galeão Intl

Tue 9/23

9:00 pm-4:05 pm

1 stop21h 05m

$1,198

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Sun 9/14

9:07 am-8:30 am

2 stops21h 23m

Rio de Janeiro–Galeão Intl

Tue 9/23

11:00 pm-4:15 pm

2 stops19h 15m

$1,199

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 12/18

7:20 am-6:25 am

2 stops20h 05m

Rio de Janeiro–Galeão Intl

Sun 12/28

9:30 pm-4:11 pm

1 stop21h 41m

$1,329

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 12/18

9:00 am-6:25 am

2 stops42h 25m

Rio de Janeiro–Galeão Intl

Sun 1/11

2:25 am-9:04 am

2 stops33h 39m

$1,951

St. LouisRio de Janeiro

STL - GIG

STLGIG

Lambert-St Louis

Thu 2/12

4:00 pm-8:20 am

1 stop13h 20m

Rio de Janeiro–Galeão Intl

Tue 2/17

9:30 pm-10:50 am

1 stop16h 20m

$5,802

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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

Best Price Found

$489

Fastest flight time

13h 20m

Direct flights

None

Airports in Rio de Janeiro

2 airports
The best one-way flight to Rio de Janeiro from St. Louis in the past 72 hours is $489. The best round-trip flight deal from St. Louis to Rio de Janeiro found on momondo in the last 72 hours is $774.
The fastest flight from St. Louis to Rio de Janeiro takes 13h 20m
There are no direct flights from St. Louis to Rio de Janeiro. Popular non-direct routes for this connection are Lambert-St Louis Airport - Rio de Janeiro–Galeão Intl Airport and Lambert-St Louis Airport - Rio de Janeiro Santos Dumont Airport.
There are 2 airports near Rio de Janeiro: Rio de Janeiro–Galeão Intl (GIG), Rio de Janeiro Santos Dumont (SDU)
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  • 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 13h 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 $697Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $717Free CancellationRating
7.2
10,000 reviews
Search American Airlines 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