STL - RIO

$298 Find Cheap Flights from St. Louis to Rio de Janeiro

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Rio de Janeiro departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Rio de Janeiro

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Rio de Janeiro, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Rio de Janeiro, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$769
Air Canada
Sat 3/7Wed 3/11
STL - GIG • 1 stop
Cheapest one-way
$298
Multiple Airlines
Mon 3/2
STL - GIG • 2 stops
Top airlines
Air Canada
Cheapest • from $769 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
May
Cheapest • 31% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Rio de Janeiro!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Rio de Janeiro (STL-RIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Rio de Janeiro that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Rio de Janeiro

Sat, Mar 7 - Wed, Mar 11
Air Canada Logo
4:05 pm - 12:05 pm
STL
-
GIG
17h 00m1 stop
Air Canada Logo
8:00 pm - 3:29 pm
GIG
-
STL
21h 29m1 stop
$769Air Canada
Sat, Mar 7 - Wed, Mar 11
Air Canada Logo
4:05 pm - 12:05 pm
STL
-
GIG
17h 00m1 stop
Air Canada Logo
3:55 pm - 3:29 pm
GIG
-
STL
25h 34m2 stops
$775Air Canada
Sat, Mar 7 - Wed, Mar 11
Air Canada Logo
4:05 pm - 12:05 pm
STL
-
GIG
17h 00m1 stop
Air Canada Logo
3:55 pm - 3:29 pm
GIG
-
STL
25h 34m2 stops
$850Air Canada
Mon, Jan 26 - Sun, Feb 1
Copa Airlines Logo
8:30 am - 8:00 am
STL
-
GIG
20h 30m2 stops
Copa Airlines Logo
1:40 am - 10:13 am
GIG
-
STL
35h 33m2 stops
$853Copa Airlines
Wed, Mar 11 - Thu, Mar 12
GOL Logo
3:22 pm - 10:45 am
STL
-
SDU
17h 23m2 stops
GOL Logo
8:25 pm - 9:51 pm
SDU
-
STL
27h 26m2 stops
$931GOL
Wed, Mar 11 - Thu, Mar 12
GOL Logo
3:22 pm - 10:15 am
STL
-
GIG
16h 53m2 stops
GOL Logo
6:10 pm - 9:51 pm
GIG
-
STL
29h 41m2 stops
$931GOL
Sat, Mar 7 - Sun, Mar 8
Multiple Airlines Logo
4:05 pm - 12:05 pm
STL
-
GIG
17h 00m1 stop
Multiple Airlines Logo
8:45 pm - 3:29 pm
GIG
-
STL
44h 44m2 stops
$962Multiple Airlines
Mon, Mar 9 - Tue, Mar 24
Multiple Airlines Logo
4:05 pm - 4:40 pm
STL
-
SDU
22h 35m2 stops
Multiple Airlines Logo
1:45 pm - 3:29 pm
SDU
-
STL
27h 44m2 stops
$968Multiple Airlines
Sun, Mar 22 - Thu, Mar 26
United Airlines Logo
1:14 pm - 4:40 pm
STL
-
SDU
25h 26m2 stops
United Airlines Logo
1:45 pm - 2:43 pm
SDU
-
STL
26h 58m2 stops
$1,295United Airlines
Sun, Mar 22 - Thu, Mar 26
United Airlines Logo
10:00 am - 4:40 pm
STL
-
SDU
28h 40m2 stops
United Airlines Logo
1:45 pm - 12:27 pm
SDU
-
STL
24h 42m2 stops
$1,296United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Rio de Janeiro flights

Get data-powered insights and trends into flights from St. Louis to Rio de Janeiro to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Rio de Janeiro?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Rio de Janeiro, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Rio de Janeiro is May, where tickets cost $761 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,511 and $1,347 respectively.

Good to know

Low seasonMay
Cheapest flight$298
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from St. Louis to Rio de Janeiro-Galeao Airport

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

Are your dates flexible? Find out the best times to travel from St. Louis to Rio de Janeiro based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Rio de Janeiro

  • What is the cheapest flight from St. Louis to Rio de Janeiro?

    In the last 3 days, the lowest price for a flight from St. Louis to Rio de Janeiro was $298 for a one-way ticket and $769 for a round-trip.

  • Do I need a passport to fly between St. Louis and Rio de Janeiro?

    Yes, you’ll need a passport to travel to Rio de Janeiro from St. Louis.

  • Which airports will I be using when flying from St. Louis to Rio de Janeiro?

    On your way to Rio de Janeiro, you’ll fly out from Lambert-St Louis. You’ll be landing in one of Rio de Janeiro’s 2 airports: Rio de Janeiro–Galeão Intl or Rio de Janeiro Santos Dumont.

  • Which aircraft models fly most regularly from St. Louis to Rio de Janeiro?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Rio de Janeiro?

    SkyTeam is the only airline alliance operating flights between St. Louis and Rio de Janeiro.

  • Which is the best airline for flights from St. Louis to Rio de Janeiro, Delta or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Rio de Janeiro are Delta and LATAM Airlines. With an average price for the route of $1,259 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,104 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from St. Louis to Rio de Janeiro?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Rio de Janeiro.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Rio de Janeiro?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rio de Janeiro from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Rio de Janeiro?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Rio de Janeiro with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Rio de Janeiro?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Rio de Janeiro from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from St. Louis to Rio de Janeiro

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Rio de Janeiro. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Rio de Janeiro? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8009 reviews
8.1Boarding
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

6.0 GoodJeff, Dec 2025
JFK - MIA
Read more Delta reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

Poor, the airline was not able to help me move flights.

The way the Pilot made all announcements, specially the way he congratulated the entire crew as the best team ever, making a comment that due to them they were able to shorter the delay to the destination. Amazing flight .

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

I’m entitled to a refund per LATAM due to the mid flight itinerary change and being stuck in São Paulo for 24 hours and needing to get a hotel. The airline was dismissive and of no help.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

Boarding was confusing with a delayed flight because there was no English translation

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Bought a ticket that included a bag and they still charged me to check it in, latam is the worst airline.

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

Everything you need to know for your flight from St. Louis to Rio de Janeiro

Information on your arrival and departure airports