Cheap flights from St. Louis to Rio de Janeiro from $747
This is the cheapest round-trip 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 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Rio de Janeiro
Cheap round-trip flights
American Airlines flights from St. Louis to Rio de Janeiro
Our best American Airlines deals on St. Louis to Rio de Janeiro flight tickets
Delta flights from St. Louis to Rio de Janeiro
Our best Delta deals on St. Louis to Rio de Janeiro flight tickets
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 February. Flight prices, which tend to average around $853, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Rio de Janeiro, with average flight prices from St. Louis averaging around $857.
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.
When to book flights from St. Louis to Rio de Janeiro
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 | $747 |
|---|---|
Fastest flight time | 12h 00m |
Direct flights | None |
Airports in Rio de Janeiro | 2 airports |
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 00m.
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?
As of March 2025, there is 1 operator available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Rio de Janeiro is LATAM Airlines (37% of total bookings). The next most popular airlines are United Airlines (35%), Delta (16%), and American Airlines (12%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $717 | Free Cancellation | Rating 7.2 10,000 reviews |
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.