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Cheap flights from St. Louis to Ecuador from $294

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 9/30. 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
6:00 am - 9:56 pm
GYE
-
STL
15h 56m
1 stop
$611American 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 - 10:51 am
GYE
-
STL
20h 22m
2 stops
$611American 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 - 10:51 am
GYE
-
STL
20h 22m
2 stops
$611American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
7:16 am - 10:45 pm
STL
-
GYE
15h 29m
2 stops
American Airlines Logo
2:29 pm - 10:51 am
GYE
-
STL
20h 22m
2 stops
$611American Airlines
Thu, Oct 22 - Sun, Oct 25
United Airlines Logo
3:13 pm - 11:25 pm
STL
-
UIO
8h 12m
1 stop
United Airlines Logo
12:35 am - 10:10 am
UIO
-
STL
9h 35m
1 stop
$697United Airlines
Wed, Sep 9 - Tue, Sep 15
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
9:00 am - 11:42 pm
UIO
-
STL
14h 42m
2 stops
$699LATAM Airlines
Tue, Sep 8 - Tue, Sep 15
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
9:00 am - 11:42 pm
UIO
-
STL
14h 42m
2 stops
$699LATAM Airlines
Wed, Sep 9 - Wed, Sep 16
Delta Logo
7:05 am - 6:59 pm
STL
-
UIO
11h 54m
1 stop
Delta Logo
12:59 am - 11:42 pm
UIO
-
STL
22h 43m
1 stop
$713Delta
Tue, Sep 8 - Mon, Sep 14
Delta Logo
6:00 am - 6:42 pm
STL
-
UIO
11h 42m
2 stops
Delta Logo
8:45 am - 8:12 am
UIO
-
STL
24h 27m
2 stops
$977Delta
Thu, Dec 24 - Mon, Jan 11
Delta Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
Delta Logo
12:59 am - 11:46 am
UIO
-
STL
10h 47m
1 stop
$988Delta
Sun, Aug 9 - Wed, Aug 12

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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 9
STL3:13 pmLambert-St Louis
8h 12m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Sep 15
UIO12:35 amQuito Mariscal Sucr
9h 35m
1 stop
STL10:10 amLambert-St Louis
$697
United Airlines
Sep 9
STL10:53 amLambert-St Louis
12h 32m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Sep 15
UIO12:35 amQuito Mariscal Sucr
15h 03m
2 stops
STL3:38 pmLambert-St Louis
$702
United Airlines
Sep 6
STL6:00 amLambert-St Louis
17h 25m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Sep 13
UIO7:00 amQuito Mariscal Sucr
15h 59m
2 stops
STL10:59 pmLambert-St Louis
$732

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Sep 8
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 15
UIO9:00 amQuito Mariscal Sucr
14h 42m
2 stops
STL11:42 pmLambert-St Louis
$699
LATAM Airlines
Sep 6
STL11:00 amLambert-St Louis
7h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 12
UIO12:59 amQuito Mariscal Sucr
8h 35m
1 stop
STL9:34 amLambert-St Louis
$727
LATAM Airlines
Aug 9
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Aug 13
UIO9:00 amQuito Mariscal Sucr
14h 58m
2 stops
STL11:58 pmLambert-St Louis
$974

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 27, 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

6:00 am-9:56 pm

1 stop15h 56m

$611

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

$611

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-10:51 am

2 stops20h 22m

$611

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

7:16 am-10:45 pm

2 stops15h 29m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-10:51 am

2 stops20h 22m

$611
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 9/9

3:13 pm-11:25 pm

1 stop8h 12m

Quito Mariscal Sucr

Tue 9/15

12:35 am-10:10 am

1 stop9h 35m

$697

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 9/8

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Tue 9/15

9:00 am-11:42 pm

2 stops14h 42m

$699

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 9/9

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Wed 9/16

9:00 am-11:42 pm

2 stops14h 42m

$699

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 9/8

7:05 am-6:59 pm

1 stop11h 54m

Quito Mariscal Sucr

Mon 9/14

12:59 am-11:42 pm

1 stop22h 43m

$713

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 12/24

6:00 am-6:42 pm

2 stops11h 42m

Quito Mariscal Sucr

Mon 1/11

8:45 am-8:12 am

2 stops24h 27m

$977

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 8/9

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Wed 8/12

12:59 am-11:46 am

1 stop10h 47m

$988

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 19m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 8h 19m
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
11,836 reviews
Search American Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.8
8,482 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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