$443 Find Cheap Flights from St. Louis to Uruguay

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 Uruguay departing on 9/15. 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

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Cheap Flights from St. Louis to Uruguay

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Montevideo
Montevideo1 stop$966
Montevideo
Montevideo1 stop$966

Book Cheap St. Louis to Uruguay Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Uruguay 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 Uruguay

Wed, Dec 10 - Mon, Dec 15
American Airlines Logo
4:35 pm - 10:15 amSTL-MVD
14h 40m1 stop
American Airlines Logo
11:25 pm - 3:37 pmMVD-STL
19h 12m1 stop
$966American Airlines
Find Deal
Wed, Dec 10 - Mon, Dec 15
American Airlines Logo
12:54 pm - 10:15 amSTL-MVD
18h 21m2 stops
American Airlines Logo
11:25 pm - 3:37 pmMVD-STL
19h 12m1 stop
$971American Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
LATAM Airlines Logo
1:30 pm - 10:30 amSTL-MVD
18h 00m2 stops
LATAM Airlines Logo
2:25 am - 8:09 amMVD-STL
32h 44m2 stops
$996LATAM Airlines
Find Deal
Tue, Dec 2 - Thu, Dec 4
Delta Logo
1:30 pm - 10:30 amSTL-MVD
18h 00m2 stops
Delta Logo
2:25 am - 9:41 amMVD-STL
34h 16m2 stops
$1,006Delta
Find Deal
Tue, Dec 2 - Fri, Dec 5
American Airlines Logo
7:58 pm - 10:15 amSTL-MVD
35h 17m2 stops
American Airlines Logo
11:25 pm - 3:37 pmMVD-STL
19h 12m1 stop
$1,171American Airlines
Find Deal
Tue, Dec 2 - Thu, Dec 4
United Airlines Logo
6:15 am - 7:26 amSTL-MVD
22h 11m2 stops
United Airlines Logo
12:37 am - 9:58 pmMVD-STL
24h 21m2 stops
$1,185United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Uruguay flights

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

Which airlines provide the cheapest flights from St. Louis to Uruguay?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Uruguay were found on American Airlines ($966) and LATAM Airlines ($996).

Good to know

Cheapest flight$443
Flight from St. Louis to Montevideo

FAQs - booking Uruguay flights

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

    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 Uruguay.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Uruguay 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 Uruguay?

    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 from St. Louis to Uruguay with an airline and back with another airline.

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

    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 from St. Louis to Uruguay up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Uruguay?

    The cheapest time of day to fly to Uruguay is generally in the evening, when round-trip flights cost $1,354 on average. Morning departures are around 2% more expensive than evening flights, on average. The most expensive time of day to fly to Uruguay is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,386.

Reviews of the top airlines flying from St. Louis to Uruguay

 
Need help choosing which airline to fly with from St. Louis to Uruguay? 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 7981 reviews
8.2Boarding
7.9Comfort
8.5Crew
7.3Food
7.9Entertainment
Airline reviews

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

6.0 GoodKristopher, Aug 2025HPN - ATL
Read more Delta reviews

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

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.

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.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

It’s a delta flight operated by LATAM. The whole ticket sale is a mess, delta changed my flight but didn’t update it in LATAM system, I couldn’t get my boarding pass, it took me hours to resolve this issue with delta. I had to change my travel plan. No apology from Delta even though it’s their fault.

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

Wider seats, better seat cushions, (I felt like there was a board I was sitting on). I had the chicken to eat but It neither tasted nor looked like chicken. The fruit was good.

Everything you need to know for your flight from St. Louis to Uruguay

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