$226 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 5/17. 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, 0 bags

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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$687
Guayaquil
Guayaquil1 stop$735
Baltra
Baltra3 stops$2,070
Quito
Quito1 stop$687
Guayaquil
Guayaquil1 stop$735
Baltra
Baltra3 stops$2,070

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

Wed, Oct 28 - Tue, Nov 10
United Airlines Logo
11:00 am - 11:30 pm
STL
-
UIO
12h 30m
1 stop
United Airlines Logo
1:35 am - 9:42 am
UIO
-
STL
9h 07m
1 stop
$687United Airlines
Wed, Oct 28 - Tue, Nov 10
United Airlines Logo
9:23 am - 11:30 pm
STL
-
UIO
14h 07m
2 stops
United Airlines Logo
1:35 am - 2:18 pm
UIO
-
STL
13h 43m
2 stops
$692United Airlines
Sat, Oct 31 - Sat, Nov 7
United Airlines Logo
8:50 am - 11:45 pm
STL
-
UIO
14h 55m
1 stop
United Airlines Logo
1:35 am - 4:35 pm
UIO
-
STL
16h 00m
1 stop
$727United Airlines
Sat, Oct 31 - Sat, Nov 7
United Airlines Logo
6:15 am - 11:45 pm
STL
-
UIO
17h 30m
1 stop
United Airlines Logo
1:35 am - 2:18 pm
UIO
-
STL
13h 43m
2 stops
$732United Airlines
Fri, Sep 18 - Sun, Sep 27
American Airlines Logo
5:33 am - 7:00 pm
STL
-
GYE
13h 27m
1 stop
American Airlines Logo
8:20 am - 11:12 pm
GYE
-
STL
14h 52m
1 stop
$735American Airlines
Fri, Sep 18 - Sun, Sep 27
American Airlines Logo
6:31 pm - 7:00 pm
STL
-
GYE
24h 29m
2 stops
American Airlines Logo
8:20 am - 10:24 pm
GYE
-
STL
14h 04m
2 stops
$740American Airlines
Mon, Jun 15 - Mon, Jun 22
American Airlines Logo
5:14 am - 10:36 pm
STL
-
GYE
17h 22m
2 stops
American Airlines Logo
6:01 am - 11:59 pm
GYE
-
STL
17h 58m
2 stops
$759American Airlines
Mon, Jun 1 - Sat, Jun 6
Delta Logo
7:01 pm - 6:59 pm
STL
-
UIO
23h 58m
1 stop
Delta Logo
12:59 am - 12:34 pm
UIO
-
STL
11h 35m
1 stop
$780Delta
Mon, Jun 15 - Sun, Jun 21
LATAM Airlines Logo
7:12 pm - 6:59 pm
STL
-
UIO
23h 47m
1 stop
LATAM Airlines Logo
12:59 am - 11:56 pm
UIO
-
STL
22h 57m
1 stop
$781LATAM Airlines
Sat, Jun 20 - Wed, Jul 1
LATAM Airlines Logo
10:16 am - 6:59 pm
STL
-
UIO
8h 43m
1 stop
LATAM Airlines Logo
12:59 am - 9:46 am
UIO
-
STL
8h 47m
1 stop
$793LATAM Airlines
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 $0 (return) on average. On the other hand, the most expensive months are June and January, when the average cost of round-trip tickets is $818 and $708 respectively.

Good to know

Low seasonApril
Cheapest flight$226
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from St. Louis to Guayaquil

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.

Reviews of the top 3 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 8460 reviews
8.1Boarding
7.2Food
7.9Comfort
7.8Entertainment
8.5Crew
Airline reviews

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

10.0 ExcellentIrmara, May 2026
MCO - BOS
Read more Delta reviews

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Nothing I like, I missed this connection b/c of an earlier flight delay. I had to stay one more night and I paid out my own pocket. LATAM failed to send me to a safe and decent hotel.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Good check in process Poor information on payments at Lima airport

Apart of Sky miles delta. And they go everywhere in Brazil

Comfort in exit seat was excellent. FLight crew and flight were excellent. However exit seat tray table was broken so could not use it. Entertainment monitor did not work at all despite attempts to reset it.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

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.

Check in -- in business took over 30 mins as there was only one attendant. Boarding was also a mess. The seat was too narrow and was not working properly. Food was very bad and the entertainment very poor. Crew was very polite and helpful, in fairness.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

The crew was very attentive through out the flight. Seats were comfortable, nice flight bag with pillow and blanket. Food was okay, since it was a overnight flight seemed to go by fast.

The flight attendant on my side of business class seemed like a novice and did not provide good service. Otherwise the flight was good and the entertainment system was very good. No free WiFi.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

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

Information on your arrival and departure airports