Cheap flights from St. Louis to Ecuador from $270

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 6/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:15 am - 11:59 pm
STL
-
UIO
18h 44m
1 stop
American Airlines Logo
11:59 pm - 10:35 am
UIO
-
STL
10h 36m
1 stop
$707American Airlines
Tue, Jun 2 - Tue, Jun 9
American Airlines Logo
12:45 pm - 11:59 pm
STL
-
UIO
11h 14m
2 stops
American Airlines Logo
6:30 am - 9:37 pm
UIO
-
STL
15h 07m
2 stops
$712American Airlines
Tue, Jun 2 - Tue, Jun 9
LATAM Airlines Logo
10:49 am - 6:59 pm
STL
-
UIO
8h 10m
1 stop
LATAM Airlines Logo
12:59 am - 11:56 pm
UIO
-
STL
22h 57m
1 stop
$717LATAM Airlines
Thu, Jun 4 - Wed, Jun 10
American Airlines Logo
5:15 am - 10:37 pm
STL
-
GYE
17h 22m
1 stop
American Airlines Logo
6:00 am - 8:52 pm
GYE
-
STL
14h 52m
2 stops
$724American Airlines
Wed, Jun 10 - Tue, Jun 16
American Airlines Logo
11:15 am - 10:37 pm
STL
-
GYE
11h 22m
1 stop
American Airlines Logo
2:31 pm - 10:35 am
GYE
-
STL
20h 04m
1 stop
$732American Airlines
Wed, Jun 10 - Tue, Jun 16
Delta Logo
7:05 pm - 6:59 pm
STL
-
UIO
23h 54m
1 stop
Delta Logo
12:59 am - 6:00 pm
UIO
-
STL
17h 01m
1 stop
$733Delta
Sat, May 16 - Fri, May 22
Delta Logo
7:05 pm - 6:59 pm
STL
-
UIO
23h 54m
1 stop
Delta Logo
6:50 pm - 12:56 pm
UIO
-
STL
18h 06m
2 stops
$737Delta
Sat, May 16 - Sat, May 23
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
12:59 am - 9:46 am
UIO
-
STL
8h 47m
1 stop
$738LATAM Airlines
Thu, Jun 4 - Sat, Jun 20
United Airlines Logo
6:00 am - 11:25 pm
STL
-
UIO
17h 25m
1 stop
United Airlines Logo
12:35 am - 9:30 am
UIO
-
STL
8h 55m
1 stop
$762United Airlines
Wed, May 13 - Tue, May 19
GOL Logo
5:24 am - 9:12 pm
STL
-
GYE
15h 48m
1 stop
GOL Logo
2:37 pm - 10:48 am
GYE
-
STL
20h 11m
2 stops
$1,085GOL
Fri, May 1 - Fri, Jul 31

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Jun 2
STL5:15 amLambert-St Louis
18h 44m
1 stop
UIO11:59 pmQuito Mariscal Sucr
Jun 9
UIO11:59 pmQuito Mariscal Sucr
10h 36m
1 stop
STL10:35 amLambert-St Louis
$707
American Airlines
Jun 2
STL12:45 pmLambert-St Louis
11h 14m
2 stops
UIO11:59 pmQuito Mariscal Sucr
Jun 9
UIO6:30 amQuito Mariscal Sucr
15h 07m
2 stops
STL9:37 pmLambert-St Louis
$712
American Airlines
Jun 10
STL5:15 amLambert-St Louis
17h 22m
1 stop
GYE10:37 pmGuayaquil Jose Joaquin de Olmedo
Jun 16
GYE6:00 amGuayaquil Jose Joaquin de Olmedo
14h 52m
2 stops
STL8:52 pmLambert-St Louis
$724

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Jun 4
STL10:49 amLambert-St Louis
8h 10m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Jun 10
UIO12:59 amQuito Mariscal Sucr
22h 57m
1 stop
STL11:56 pmLambert-St Louis
$717
LATAM Airlines
Jun 4
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Jun 20
UIO12:59 amQuito Mariscal Sucr
8h 47m
1 stop
STL9:46 amLambert-St Louis
$738
LATAM Airlines
Jun 14
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Jun 20
UIO12:59 amQuito Mariscal Sucr
8h 47m
1 stop
STL9:46 amLambert-St Louis
$748

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 April 21, 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. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 6/2

5:15 am-11:59 pm

1 stop18h 44m

Quito Mariscal Sucr

Tue 6/9

11:59 pm-10:35 am

1 stop10h 36m

$707

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 6/2

12:45 pm-11:59 pm

2 stops11h 14m

Quito Mariscal Sucr

Tue 6/9

6:30 am-9:37 pm

2 stops15h 07m

$712

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 6/4

10:49 am-6:59 pm

1 stop8h 10m

Quito Mariscal Sucr

Wed 6/10

12:59 am-11:56 pm

1 stop22h 57m

$717

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 6/10

5:15 am-10:37 pm

1 stop17h 22m

Guayaquil Jose Joaquin de Olmedo

Tue 6/16

6:00 am-8:52 pm

2 stops14h 52m

$724

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 6/10

11:15 am-10:37 pm

1 stop11h 22m

Guayaquil Jose Joaquin de Olmedo

Tue 6/16

2:31 pm-10:35 am

1 stop20h 04m

$732

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 5/16

7:05 pm-6:59 pm

1 stop23h 54m

Quito Mariscal Sucr

Fri 5/22

12:59 am-6:00 pm

1 stop17h 01m

$733

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 5/16

7:05 pm-6:59 pm

1 stop23h 54m

Quito Mariscal Sucr

Sat 5/23

6:50 pm-12:56 pm

2 stops18h 06m

$737
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 6/4

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Sat 6/20

12:59 am-9:46 am

1 stop8h 47m

$738

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 5/13

6:00 am-11:25 pm

1 stop17h 25m

Quito Mariscal Sucr

Tue 5/19

12:35 am-9:30 am

1 stop8h 55m

$762

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Fri 5/1

5:24 am-9:12 pm

1 stop15h 48m

Guayaquil Jose Joaquin de Olmedo

Fri 7/31

2:37 pm-10:48 am

2 stops20h 11m

$1,085

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 10m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 8h 10m
There are no direct flights from St. Louis to Ecuador. There are no popular flight routes from St. Louis to Ecuador.

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 $516Free CancellationRating
7.1
11,647 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $655Free CancellationRating
7.4
1,910 reviews
Search LATAM Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,433 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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Thu 5/21
Thu 5/28

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