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Cheap flights from St. Louis to Ecuador from $571

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 Ecuador departing on 10/22. 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 - 10:45 pm
STL
-
GYE
16h 45m
2 stops
American Airlines Logo
2:29 pm - 10:51 am
GYE
-
STL
20h 22m
2 stops
$571American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
6:00 am - 10:45 pm
STL
-
GYE
16h 45m
2 stops
American Airlines Logo
2:29 pm - 5:26 pm
GYE
-
STL
26h 57m
1 stop
$610American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
5:00 am - 10:45 pm
STL
-
GYE
17h 45m
1 stop
American Airlines Logo
2:29 pm - 5:26 pm
GYE
-
STL
26h 57m
1 stop
$663American Airlines
Thu, Oct 22 - Sun, Oct 25
LATAM Airlines Logo
11:00 am - 6:59 pm
STL
-
UIO
7h 59m
1 stop
LATAM Airlines Logo
9:00 am - 11:58 pm
UIO
-
STL
14h 58m
2 stops
$667LATAM Airlines
Thu, Aug 27 - Thu, Sep 3
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
9:00 am - 11:48 pm
UIO
-
STL
14h 48m
2 stops
$686LATAM Airlines
Thu, Oct 1 - Thu, Oct 15
Delta Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
Delta Logo
12:59 am - 5:53 pm
UIO
-
STL
16h 54m
1 stop
$687Delta
Thu, Aug 27 - Wed, Sep 2
United Airlines Logo
8:50 am - 5:00 am
STL
-
UIO
20h 10m
2 stops
United Airlines Logo
12:35 am - 3:38 pm
UIO
-
STL
15h 03m
2 stops
$692United Airlines
Thu, Aug 27 - Wed, Sep 2
American Airlines Logo
5:00 am - 9:04 pm
STL
-
UIO
16h 04m
1 stop
American Airlines Logo
12:55 am - 3:50 pm
UIO
-
STL
15h 55m
1 stop
$703American Airlines
Tue, Oct 20 - Mon, Nov 2
Delta Logo
7:05 am - 7:05 pm
STL
-
UIO
12h 00m
2 stops
Delta Logo
9:00 am - 9:16 pm
UIO
-
STL
12h 16m
2 stops
$712Delta
Thu, Oct 1 - Thu, Oct 15
United Airlines Logo
7:25 am - 11:25 pm
STL
-
UIO
16h 00m
2 stops
United Airlines Logo
12:35 am - 12:02 pm
UIO
-
STL
35h 27m
3 stops
$744United Airlines
Thu, Aug 27 - Wed, Sep 2

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LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Aug 27
STL11:00 amLambert-St Louis
7h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 3
UIO9:00 amQuito Mariscal Sucr
14h 58m
2 stops
STL11:58 pmLambert-St Louis
$667
LATAM Airlines
Oct 1
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Oct 15
UIO9:00 amQuito Mariscal Sucr
14h 48m
2 stops
STL11:48 pmLambert-St Louis
$686
LATAM Airlines
Oct 1
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Oct 14
UIO12:59 amQuito Mariscal Sucr
17h 16m
1 stop
STL6:15 pmLambert-St Louis
$707

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Aug 27
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 2
UIO12:59 amQuito Mariscal Sucr
16h 54m
1 stop
STL5:53 pmLambert-St Louis
$687
Delta
Oct 1
STL7:05 amLambert-St Louis
12h 00m
2 stops
UIO7:05 pmQuito Mariscal Sucr
Oct 15
UIO9:00 amQuito Mariscal Sucr
12h 16m
2 stops
STL9:16 pmLambert-St Louis
$712
Delta
Dec 24
STL6:00 amLambert-St Louis
11h 42m
2 stops
UIO6:42 pmQuito Mariscal Sucr
Jan 11
UIO8:45 amQuito Mariscal Sucr
15h 33m
2 stops
STL11:18 pmLambert-St Louis
$793

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 July 15, 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 - GYE

STLGYE

Lambert-St Louis

Thu 10/22

6:00 am-10:45 pm

2 stops16h 45m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-10:51 am

2 stops20h 22m

$571

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

6:00 am-10:45 pm

2 stops16h 45m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-5:26 pm

1 stop26h 57m

$610

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

5:00 am-10:45 pm

1 stop17h 45m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-5:26 pm

1 stop26h 57m

$663
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 8/27

11:00 am-6:59 pm

1 stop7h 59m

Quito Mariscal Sucr

Thu 9/3

9:00 am-11:58 pm

2 stops14h 58m

$667

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 10/1

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Thu 10/15

9:00 am-11:48 pm

2 stops14h 48m

$686

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 8/27

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Wed 9/2

12:59 am-5:53 pm

1 stop16h 54m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 8/27

8:50 am-5:00 am

2 stops20h 10m

Quito Mariscal Sucr

Wed 9/2

12:35 am-3:38 pm

2 stops15h 03m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 10/20

5:00 am-9:04 pm

1 stop16h 04m

Quito Mariscal Sucr

Mon 11/2

12:55 am-3:50 pm

1 stop15h 55m

$703

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 10/1

7:05 am-7:05 pm

2 stops12h 00m

Quito Mariscal Sucr

Thu 10/15

9:00 am-9:16 pm

2 stops12h 16m

$712

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 8/27

7:25 am-11:25 pm

2 stops16h 00m

Quito Mariscal Sucr

Wed 9/2

12:35 am-12:02 pm

3 stops35h 27m

$744

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

11h 15m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 11h 15m
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
11,806 reviews
Search American Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.8
8,469 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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