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Cheap flights from St. Louis to Ecuador from $359

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ecuador departing on 10/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Ecuador

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 am - 10:35 pmSTL  Lambert-St Louis-GYE Guayaquil Jose Joaquin de Olmedo
16h 35m2 stops Philadelphia Miami
American Airlines Logo
2:29 pm - 10:51 amGYE  Guayaquil Jose Joaquin de Olmedo-STL Lambert-St Louis
20h 22m2 stops Miami Chicago O'Hare Intl
$631American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
6:00 am - 10:39 pmSTL  Lambert-St Louis-GYE Guayaquil Jose Joaquin de Olmedo
16h 39m2 stops Philadelphia Miami
American Airlines Logo
6:00 am - 9:59 pmGYE  Guayaquil Jose Joaquin de Olmedo-STL Lambert-St Louis
15h 59m1 stop Miami
$631American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
5:00 am - 10:39 pmSTL  Lambert-St Louis-GYE Guayaquil Jose Joaquin de Olmedo
17h 39m2 stops Chicago O'Hare Intl Miami
American Airlines Logo
6:00 am - 9:59 pmGYE  Guayaquil Jose Joaquin de Olmedo-STL Lambert-St Louis
15h 59m1 stop Miami
$631American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
5:00 am - 10:39 pmSTL  Lambert-St Louis-GYE Guayaquil Jose Joaquin de Olmedo
17h 39m2 stops Chicago O'Hare Intl Miami
American Airlines Logo
2:29 pm - 10:51 amGYE  Guayaquil Jose Joaquin de Olmedo-STL Lambert-St Louis
20h 22m2 stops Miami Chicago O'Hare Intl
$631American Airlines
Thu, Oct 22 - Sun, Oct 25
LATAM Airlines Logo
6:00 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 59m1 stop Atlanta Hartsfield-Jackson
LATAM Airlines Logo
9:00 am - 11:42 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 42m2 stops Miami Atlanta Hartsfield-Jackson
$699LATAM Airlines
Tue, Sep 22 - Tue, Sep 29
LATAM Airlines Logo
6:00 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 59m1 stop Atlanta Hartsfield-Jackson
LATAM Airlines Logo
9:00 am - 11:42 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 42m2 stops Miami Atlanta Hartsfield-Jackson
$699LATAM Airlines
Thu, Sep 24 - Thu, Oct 1
LATAM Airlines Logo
6:00 am - 11:00 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
17h 00m2 stops Atlanta Hartsfield-Jackson Bogotá El Dorado
LATAM Airlines Logo
9:00 am - 11:42 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 42m2 stops Miami Atlanta Hartsfield-Jackson
$699LATAM Airlines
Thu, Sep 24 - Thu, Oct 1
Delta Logo
7:05 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
11h 54m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:59 am - 3:54 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 55m1 stop Atlanta Hartsfield-Jackson
$707Delta
Tue, Sep 22 - Mon, Sep 28
Delta Logo
7:05 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
11h 54m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:59 am - 10:55 amUIO  Quito Mariscal Sucr-STL Lambert-St Louis
9h 56m1 stop Atlanta Hartsfield-Jackson
$707Delta
Thu, Sep 24 - Wed, Sep 30
Delta Logo
7:20 pm - 7:05 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
23h 45m2 stops Atlanta Hartsfield-Jackson Miami
Delta Logo
9:00 am - 11:54 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 54m2 stops Miami Atlanta Hartsfield-Jackson
$737Delta
Mon, Oct 12 - Fri, Oct 23

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United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Sep 19
STL9:23 amLambert-St Louis
19h 37m
2 stops
UIO5:00 amQuito Mariscal Sucr
Sep 28
UIO7:00 amQuito Mariscal Sucr
15h 59m
2 stops
STL10:59 pmLambert-St Louis
$717
United Airlines
Oct 30
STL6:15 amLambert-St Louis
17h 15m
1 stop
UIO11:30 pmQuito Mariscal Sucr
Nov 8
UIO1:35 amQuito Mariscal Sucr
21h 51m
1 stop
STL10:26 pmLambert-St Louis
$722
United Airlines
Sep 18
STL5:30 pmLambert-St Louis
35h 30m
2 stops
UIO5:00 amQuito Mariscal Sucr
Sep 27
UIO12:35 amQuito Mariscal Sucr
20h 46m
2 stops
STL9:21 pmLambert-St Louis
$735

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Oct 22
STL6:00 amLambert-St Louis
16h 39m
2 stops
GYE10:39 pmGuayaquil Jose Joaquin de Olmedo
Oct 25
GYE2:29 pmGuayaquil Jose Joaquin de Olmedo
20h 22m
2 stops
STL10:51 amLambert-St Louis
$631
American Airlines
Oct 22
STL5:00 amLambert-St Louis
17h 39m
1 stop
GYE10:39 pmGuayaquil Jose Joaquin de Olmedo
Oct 25
GYE6:00 amGuayaquil Jose Joaquin de Olmedo
15h 59m
1 stop
STL9:59 pmLambert-St Louis
$653
American Airlines
Oct 22
STL6:07 pmLambert-St Louis
19h 22m
1 stop
GYE1:29 pmGuayaquil Jose Joaquin de Olmedo
Oct 25
GYE6:00 amGuayaquil Jose Joaquin de Olmedo
15h 59m
1 stop
STL9:59 pmLambert-St Louis
$664

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Ecuador that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from St. Louis to Ecuador that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisGuayaquil

STL Lambert-St Louis - GYE Guayaquil Jose Joaquin de Olmedo

STLGYE

Lambert-St Louis

Thu 10/22

6:00 am-10:35 pm

2 stops16h 35m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-10:51 am

2 stops20h 22m

$631

St. LouisGuayaquil

STL Lambert-St Louis - GYE Guayaquil Jose Joaquin de Olmedo

STLGYE

Lambert-St Louis

Thu 10/22

6:00 am-10:39 pm

2 stops16h 39m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

6:00 am-9:59 pm

1 stop15h 59m

$631

St. LouisGuayaquil

STL Lambert-St Louis - GYE Guayaquil Jose Joaquin de Olmedo

STLGYE

Lambert-St Louis

Thu 10/22

5:00 am-10:39 pm

2 stops17h 39m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

6:00 am-9:59 pm

1 stop15h 59m

$631

St. LouisGuayaquil

STL Lambert-St Louis - GYE Guayaquil Jose Joaquin de Olmedo

STLGYE

Lambert-St Louis

Thu 10/22

5:00 am-10:39 pm

2 stops17h 39m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-10:51 am

2 stops20h 22m

$631

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Tue 9/22

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Tue 9/29

9:00 am-11:42 pm

2 stops14h 42m

$699

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 9/24

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Thu 10/1

9:00 am-11:42 pm

2 stops14h 42m

$699

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 9/24

6:00 am-11:00 pm

2 stops17h 00m

Quito Mariscal Sucr

Thu 10/1

9:00 am-11:42 pm

2 stops14h 42m

$699

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Tue 9/22

7:05 am-6:59 pm

1 stop11h 54m

Quito Mariscal Sucr

Mon 9/28

12:59 am-3:54 pm

1 stop14h 55m

$707
Quickest round-trip

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 9/24

7:05 am-6:59 pm

1 stop11h 54m

Quito Mariscal Sucr

Wed 9/30

12:59 am-10:55 am

1 stop9h 56m

$707

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Mon 10/12

7:20 pm-7:05 pm

2 stops23h 45m

Quito Mariscal Sucr

Fri 10/23

9:00 am-11:54 pm

2 stops14h 54m

$737

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Ecuador from

How to get the cheapest flight ticket from St. Louis to Ecuador

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

Can stopping save me money on St. Louis to Ecuador flights?

You could potentially save up to 5% on your flight if you consider stops on a St. Louis to Ecuador flight.

Cheap St. Louis to Ecuador flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ecuador

Fastest flight time

8h 45m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 8h 45m
There are no direct flights from St. Louis to Ecuador. There are no popular flight routes from St. Louis to Ecuador.
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Frequently asked questions about flying from St. Louis to Ecuador

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Ecuador?

    Prices for flights from Lambert-St Louis Airport to Ecuador were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Ecuador?

  • How old do you have to be to fly from Lambert-St Louis Airport to Ecuador?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Ecuador.

  • What documentation or ID do you need to fly to Ecuador?

    The necessary travel and health documents for your Ecuador 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.

Best airlines flying from St. Louis to Ecuador

Compare and see reviews for airlines that fly from St. Louis to Ecuador with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $592Free CancellationRating
7.1
11,902 reviews
Search American Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.8
8,505 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Ecuador?

Finding the right flight to Ecuador from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ecuador quick and easy, saving you time and money.

Can I find flights from St. Louis to Ecuador with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ecuador from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Ecuador?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ecuador from St. Louis.

I’m not ready to book a flight from St. Louis to Ecuador right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Ecuador 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.

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