How long is the flight from St. Louis to Rio de Janeiro Santos Dumont Airport?

GOL and Air Canada can get you from St. Louis to Rio de Janeiro Santos Dumont Airport in just under 22h 35m. Your travel time can differ by up to 22h 15m. The distance between St. Louis and Rio de Janeiro Santos Dumont Airport is about 5238 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Rio de Janeiro Santos Dumont Airport ranges from 1.6 - 5.1 inches per month. January is typically the wettest month, when rainfall can reach 5.1 in. July is typically the driest time to visit Rio de Janeiro Santos Dumont Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to Rio de Janeiro Santos Dumont Airport, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 69.8 F).

What is the cheapest time of day to fly from STL to SDU?

When flying from St. Louis to Rio de Janeiro Santos Dumont Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from St. Louis to Rio de Janeiro Santos Dumont?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Rio de Janeiro Santos Dumont. On average, Lambert-St Louis has 0 outbound flights to Rio de Janeiro Santos Dumont per day from 0 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

Can I find deals for flights from St. Louis to Santos Dumont that include hotel bookings?

Yes. In addition to deals on St. Louis to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Santos Dumont?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Santos Dumont.

Can I find deals for business class flights from St. Louis to Santos Dumont?

Yes. Cheapflights offers flight deals from St. Louis to Santos Dumont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$310+ Flights from St. Louis to Rio de Janeiro Santos Dumont Airport, Brazil

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Santos Dumont with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Santos Dumont

Cheapest flights from St. Louis to Santos Dumont
Explore the most affordable flight options available from St. Louis to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

mar. 12/306:00 pmSTL - SDU

2 stops25h 25mGOL

jue. 1/16:00 amSDU - STL

2 stops19h 35mGOL

Deal found 12/11

$1,445

sáb. 12/131:35 pmSTL - SDU

2 stops17h 00mLATAM Airlines

mié. 12/248:05 pmSDU - STL

2 stops19h 19mLATAM Airlines

Deal found 12/10

$4,494

mié. 12/104:05 pmSTL - SDU

2 stops23h 40mMultiple Airlines

mar. 11/32:05 pmSDU - STL

2 stops28h 25mMultiple Airlines

Deal found 12/10

$4,815

mié. 12/241:22 pmSTL - SDU

2 stops17h 03mLATAM Airlines

vie. 12/268:05 pmSDU - STL

2 stops18h 58mLATAM Airlines

Deal found 12/11

$4,916

mié. 12/102:02 pmSTL - SDU

2 stops20h 03mLATAM Airlines

jue. 12/118:05 pmSDU - STL

2 stops24h 51mLATAM Airlines

Deal found 12/10

$5,303

jue. 12/115:12 pmSTL - SDU

2 stops17h 03mLATAM Airlines

jue. 12/182:00 pmSDU - STL

2 stops21h 24mLATAM Airlines

Deal found 12/11

$6,567

Best flights from St. Louis to Santos Dumont
Discover carefully curated flight deals from St. Louis to Santos Dumont that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

vie. 4/2410:00 amSTL - SDU

2 stops44h 50mGOL

lun. 4/276:00 amSDU - STL

2 stops17h 35mGOL

Deal found 12/10

$931

dom. 3/224:05 pmSTL - SDU

2 stops22h 35mAir Canada

jue. 3/261:45 pmSDU - STL

2 stops27h 44mAir Canada

Deal found 12/10

$1,141

dom. 3/2210:00 amSTL - SDU

2 stops28h 40mUnited Airlines

jue. 3/261:45 pmSDU - STL

2 stops24h 42mUnited Airlines

Deal found 12/9

$1,296

dom. 2/19:59 amSTL - SDU

2 stops24h 06mLATAM Airlines

lun. 2/28:05 pmSDU - STL

2 stops39h 48mLATAM Airlines

Deal found 12/10

$1,448

mié. 3/113:22 pmSTL - SDU

2 stops17h 23mGOL

jue. 3/128:25 pmSDU - STL

2 stops27h 26mGOL

Deal found 12/10

$931

dom. 3/111:19 amSTL - SDU

2 stops20h 26mGOL

lun. 3/28:25 pmSDU - STL

2 stops28h 40mGOL

Deal found 12/11

$1,108

mié. 2/119:57 amSTL - SDU

2 stops25h 33mUnited Airlines

dom. 2/152:50 pmSDU - STL

2 stops33h 10mUnited Airlines

Deal found 12/11

$1,303

sáb. 3/76:34 pmSTL - SDU

2 stops43h 06mUnited Airlines

sáb. 3/215:30 pmSDU - STL

2 stops29h 30mUnited Airlines

Deal found 12/10

$1,310

sáb. 3/711:00 amSTL - SDU

2 stops20h 45mGOL

dom. 3/88:25 pmSDU - STL

2 stops27h 26mGOL

Deal found 12/10

$1,233

mié. 1/283:11 pmSTL - SDU

2 stops20h 19mUnited Airlines

dom. 2/12:50 pmSDU - STL

2 stops21h 32mUnited Airlines

Deal found 12/11

$1,439

jue. 1/83:37 pmSTL - SDU

2 stops19h 08mGOL

jue. 1/224:35 pmSDU - STL

2 stops19h 16mGOL

Deal found 12/10

$1,334

mar. 12/306:00 pmSTL - SDU

2 stops25h 25mGOL

jue. 1/16:00 amSDU - STL

2 stops19h 35mGOL

Deal found 12/11

$1,445

Last-minute flights from St. Louis to Santos Dumont
Discover last-minute flight deals from St. Louis to Santos Dumont. Data last updated diciembre 12, 2025 and is based on user searches.

sáb. 12/131:35 pmSTL - SDU

2 stops17h 00mLATAM Airlines

mié. 12/248:05 pmSDU - STL

2 stops19h 19mLATAM Airlines

Deal found 12/10

$4,494

mié. 12/241:22 pmSTL - SDU

2 stops17h 03mLATAM Airlines

vie. 12/268:05 pmSDU - STL

2 stops18h 58mLATAM Airlines

Deal found 12/11

$4,916

mar. 12/306:00 pmSTL - SDU

2 stops25h 25mGOL

jue. 1/16:00 amSDU - STL

2 stops19h 35mGOL

Deal found 12/11

$1,445

jue. 1/83:37 pmSTL - SDU

2 stops19h 08mGOL

jue. 1/224:35 pmSDU - STL

2 stops19h 16mGOL

Deal found 12/10

$1,334

jue. 1/86:02 pmSTL - SDU

2 stops25h 23mGOL

sáb. 1/106:00 amSDU - STL

2 stops20h 59mGOL

Deal found 12/10

$2,120

jue. 1/84:05 pmSTL - SDU

2 stops19h 25mMultiple Airlines

sáb. 1/1011:20 amSDU - STL

3 stops31h 09mMultiple Airlines

Deal found 12/10

$3,541

sáb. 1/105:00 pmSTL - SDU

2 stops26h 10mLATAM Airlines

sáb. 1/172:00 pmSDU - STL

2 stops24h 05mLATAM Airlines

Deal found 12/11

$1,598

sáb. 1/105:05 amSTL - SDU

2 stops38h 20mGOL

sáb. 1/245:40 pmSDU - STL

2 stops33h 19mGOL

Deal found 12/11

$2,146

mié. 1/1410:00 amSTL - SDU

2 stops21h 45mGOL

vie. 1/236:00 amSDU - STL

2 stops20h 59mGOL

Deal found 12/11

$1,528

lun. 1/1912:00 pmSTL - SDU

2 stops22h 15mLATAM Airlines

vie. 1/232:00 pmSDU - STL

2 stops32h 27mLATAM Airlines

Deal found 12/10

$1,443

sáb. 1/245:07 pmSTL - SDU

2 stops26h 18mGOL

sáb. 1/316:00 amSDU - STL

2 stops20h 59mGOL

Deal found 12/9

$1,608

mié. 1/283:11 pmSTL - SDU

2 stops20h 19mUnited Airlines

dom. 2/12:50 pmSDU - STL

2 stops21h 32mUnited Airlines

Deal found 12/11

$1,439

One-way flights from St. Louis to Santos Dumont
Search for one-way flight options from St. Louis to Santos Dumont. Find affordable one-way fares based on user searches. Data last updated diciembre 12, 2025.

lun. 3/23:49 pmSTL - SDU

3 stops40h 31mMultiple Airlines

Deal found 12/10

$310

mar. 3/104:51 pmSTL - SDU

3 stops36h 14mMultiple Airlines

Deal found 12/10

$386

mié. 4/13:30 pmSTL - SDU

2 stops19h 30mMultiple Airlines

Deal found 12/10

$394

lun. 2/28:22 pmSTL - SDU

3 stops55h 43mMultiple Airlines

Deal found 12/10

$403

lun. 5/1110:00 amSTL - SDU

2 stops22h 50mGOL

Deal found 12/10

$420

dom. 3/18:36 pmSTL - SDU

3 stops59h 09mMultiple Airlines

Deal found 12/10

$430

lun. 1/125:11 pmSTL - SDU

3 stops36h 59mMultiple Airlines

Deal found 12/10

$437

lun. 3/304:05 pmSTL - SDU

2 stops22h 40mMultiple Airlines

Deal found 12/10

$464

lun. 3/94:05 pmSTL - SDU

2 stops22h 35mMultiple Airlines

Deal found 12/10

$476

Find flight deals from St. Louis to Santos Dumont

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$931 (FlightHub)
One-way from	$310 (Kiwi.com)
Popular in	December
Cheapest in	May
Average price	$1,511

Provider with most accurate pricing for Lambert-St Louis-Rio de Janeiro (RIO) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Rio de Janeiro (RIO) flights.

Search Deals

From Lambert-St Louis to Rio de Janeiro Santos Dumont

Search Deals

One-way flight from Lambert-St Louis to Rio de Janeiro Santos Dumont

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($162 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights 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

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

vie. 4/24

10:00 am-8:50 am

2 stops44h 50m

Rio de Janeiro Santos Dumont

lun. 4/27

6:00 am-9:35 pm

2 stops17h 35m

$931

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

mié. 3/11

3:22 pm-10:45 am

2 stops17h 23m

Rio de Janeiro Santos Dumont

jue. 3/12

8:25 pm-9:51 pm

2 stops27h 26m

$931

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

dom. 3/1

11:19 am-10:45 am

2 stops20h 26m

Rio de Janeiro Santos Dumont

lun. 3/2

8:25 pm-10:05 pm

2 stops28h 40m

$1,108

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

dom. 3/22

4:05 pm-4:40 pm

2 stops22h 35m

Rio de Janeiro Santos Dumont

jue. 3/26

1:45 pm-3:29 pm

2 stops27h 44m

$1,141

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

sáb. 3/7

11:00 am-10:45 am

2 stops20h 45m

Rio de Janeiro Santos Dumont

dom. 3/8

8:25 pm-9:51 pm

2 stops27h 26m

$1,233

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

dom. 3/22

10:00 am-4:40 pm

2 stops28h 40m

Rio de Janeiro Santos Dumont

jue. 3/26

1:45 pm-12:27 pm

2 stops24h 42m

$1,296

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

mié. 2/11

9:57 am-2:30 pm

2 stops25h 33m

Rio de Janeiro Santos Dumont

dom. 2/15

2:50 pm-9:00 pm

2 stops33h 10m

$1,303

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

sáb. 3/7

6:34 pm-4:40 pm

2 stops43h 06m

Rio de Janeiro Santos Dumont

sáb. 3/21

5:30 pm-9:00 pm

2 stops29h 30m

$1,310

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

jue. 1/8

3:37 pm-1:45 pm

2 stops19h 08m

Rio de Janeiro Santos Dumont

jue. 1/22

4:35 pm-8:51 am

2 stops19h 16m

$1,334

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

mié. 1/28

3:11 pm-2:30 pm

2 stops20h 19m

Rio de Janeiro Santos Dumont

dom. 2/1

2:50 pm-9:22 am

2 stops21h 32m

$1,439

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 21 results

Best time to book a flight from St. Louis to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

What airport do you fly from for flights from St. Louis to Rio de Janeiro Santos Dumont?
Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Rio de Janeiro Santos Dumont. On average, Lambert-St Louis has 0 outbound flights to Rio de Janeiro Santos Dumont per day from 0 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
How long is the flight from St. Louis to Rio de Janeiro Santos Dumont Airport?
GOL and Air Canada can get you from St. Louis to Rio de Janeiro Santos Dumont Airport in just under 22h 35m. Your travel time can differ by up to 22h 15m. The distance between St. Louis and Rio de Janeiro Santos Dumont Airport is about 5238 mi. This flight may include one or multiple stops.
Can I find deals for flights from St. Louis to Santos Dumont that include hotel bookings?
Yes. In addition to deals on St. Louis to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Santos Dumont?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Santos Dumont.
Can I find deals for business class flights from St. Louis to Santos Dumont?
Yes. Cheapflights offers flight deals from St. Louis to Santos Dumont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$310+ Cheap flights from St. Louis (STL) to Santos Dumont, Brazil (SDU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Santos Dumont with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Santos Dumont

Cheapest flights from St. Louis to Santos DumontExplore the most affordable flight options available from St. Louis to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

Explore the most affordable flight options available from St. Louis to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

Find flight deals from St. Louis to Santos Dumont

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights 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.

Best time to book a flight from St. Louis to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from St. Louis with our price prediction graph.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Santos Dumont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Rio de Janeiro Santos Dumont?

How long is the flight from St. Louis to Rio de Janeiro Santos Dumont Airport?

Can I find deals for flights from St. Louis to Santos Dumont that include hotel bookings?

How can I find direct flights from St. Louis to Santos Dumont?

Can I find deals for business class flights from St. Louis to Santos Dumont?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Santos Dumont

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from St. Louis to Santos Dumont
Explore the most affordable flight options available from St. Louis to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.