$270 Find Cheap Flights from St. Louis to Ecuador

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 Ecuador departing on 9/17. 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 Ecuador

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Quito
Quito1 stop$614
Guayaquil
Guayaquil2 stops$708
Baltra
Baltra2 stops$1,449
San Cristobal
San Cristobal3 stops$2,238
Quito
Quito1 stop$614
Guayaquil
Guayaquil2 stops$708
Baltra
Baltra2 stops$1,449
San Cristobal
San Cristobal3 stops$2,238

Book Cheap St. Louis to Ecuador 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 Ecuador 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 Ecuador

Tue, Sep 16 - Thu, Sep 25
Delta Logo
9:19 am - 7:30 pmSTL-UIO
10h 11m1 stop
Delta Logo
11:20 pm - 4:05 pmUIO-STL
16h 45m1 stop
$614Delta
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Tue, Sep 16 - Thu, Sep 25
Delta Logo
7:10 am - 7:05 pmSTL-UIO
11h 55m2 stops
Delta Logo
9:11 am - 9:15 pmUIO-STL
12h 04m2 stops
$619Delta
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Mon, Feb 2 - Fri, Feb 20
United Airlines Logo
6:15 am - 12:30 amSTL-UIO
17h 15m1 stop
United Airlines Logo
1:35 am - 4:35 pmUIO-STL
16h 00m1 stop
$624United Airlines
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Mon, Feb 2 - Fri, Feb 20
United Airlines Logo
5:18 pm - 12:30 amSTL-UIO
30h 12m2 stops
United Airlines Logo
1:35 am - 3:21 pmUIO-STL
14h 46m2 stops
$629United Airlines
Find Deal
Fri, Jan 2 - Sun, Jan 18
United Airlines Logo
6:00 am - 12:30 amSTL-UIO
17h 30m1 stop
United Airlines Logo
1:35 am - 10:06 pmUIO-STL
21h 31m1 stop
$633United Airlines
Find Deal
Fri, Jan 2 - Sat, Jan 17
United Airlines Logo
6:00 am - 12:30 amSTL-UIO
17h 30m1 stop
United Airlines Logo
1:35 am - 9:42 amUIO-STL
9h 07m1 stop
$634United Airlines
Find Deal
Mon, Feb 2 - Sat, Feb 21
LATAM Airlines Logo
6:00 am - 8:00 pmSTL-UIO
13h 00m1 stop
LATAM Airlines Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$654LATAM Airlines
Find Deal
Mon, Feb 2 - Sat, Feb 21
LATAM Airlines Logo
4:00 pm - 5:10 amSTL-UIO
36h 10m2 stops
LATAM Airlines Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$667LATAM Airlines
Find Deal
Thu, Dec 4 - Fri, Feb 20
American Airlines Logo
5:25 am - 10:05 pmSTL-GYE
15h 40m1 stop
American Airlines Logo
7:35 am - 8:06 amGYE-STL
25h 31m2 stops
$787American Airlines
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Thu, Nov 20 - Fri, Nov 28
American Airlines Logo
6:07 am - 7:57 pmSTL-UIO
12h 50m2 stops
American Airlines Logo
12:55 am - 1:47 pmUIO-STL
13h 52m2 stops
$789American Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from St. Louis to Ecuador 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 Ecuador?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Ecuador, 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 Ecuador is October, when tickets cost $571 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $1,267 and $1,227 respectively.

What’s the cheapest day of the week to fly from St. Louis to Ecuador?

The average price of all round-trip flights from St. Louis to Ecuador clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ecuador on a Tuesday and more expensive on a Friday. On your return trip to St. Louis, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

Good to know

Low seasonOctober
Cheapest flight$270
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 48% increase in price.
Flight from St. Louis to Quito

FAQs - booking Ecuador flights

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

    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 Ecuador.

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

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

    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 Ecuador 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 Ecuador?

    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 Ecuador 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 Ecuador?

    The cheapest time of day to fly to Ecuador is generally in the evening, when round-trip flights cost $656 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to Ecuador is generally in the morning, which is peak travel time and where the average cost of a ticket is $689.

Reviews of the top 4 airlines serving from St. Louis to Ecuador

 
Need help choosing which airline to fly with from St. Louis to Ecuador? 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 7982 reviews
7.9Entertainment
7.3Food
7.9Comfort
8.2Boarding
8.5Crew
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.

Horrible the worst airlines I have ever flown. Cancelled flight with no choices and when contacted them they were not helpful

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.

Lost ,y connection due to a mechanical delay, huge line to get new connection and vouchers

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

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

The flight was comfortable with the exit row and great service

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

Pretty good. The food was just mediocre, the boarding and crew were good.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

Sat on the ground in Cincinnati for 50 minutes before deplaning

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