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Cheap flights from St. Louis to Ecuador from $687

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 8/11. 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.
United Airlines Logo
11:15 am - 11:25 pm
STL
-
UIO
12h 10m
1 stop
United Airlines Logo
12:35 am - 10:10 am
UIO
-
STL
9h 35m
1 stop
$687United Airlines
Tue, Aug 11 - Wed, Aug 19
Delta Logo
11:51 am - 9:25 pm
STL
-
UIO
8h 34m
1 stop
Delta Logo
8:45 am - 11:39 pm
UIO
-
STL
15h 54m
2 stops
$692Delta
Mon, Nov 16 - Wed, Dec 16
United Airlines Logo
6:15 am - 12:30 am
STL
-
UIO
17h 15m
1 stop
United Airlines Logo
1:35 am - 2:13 pm
UIO
-
STL
13h 38m
1 stop
$751United Airlines
Sat, Nov 14 - Tue, Nov 17
United Airlines Logo
6:15 am - 12:30 am
STL
-
UIO
17h 15m
1 stop
United Airlines Logo
1:35 am - 3:41 pm
UIO
-
STL
15h 06m
2 stops
$756United Airlines
Sat, Nov 14 - Tue, Nov 17
United Airlines Logo
5:30 pm - 11:25 pm
STL
-
UIO
29h 55m
2 stops
United Airlines Logo
7:00 am - 6:04 pm
UIO
-
STL
11h 04m
1 stop
$773United Airlines
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
11:15 am - 11:25 pm
STL
-
UIO
12h 10m
1 stop
United Airlines Logo
7:00 am - 10:10 am
UIO
-
STL
27h 10m
1 stop
$785United Airlines
Tue, Aug 11 - Mon, Aug 17
American Airlines Logo
5:00 am - 1:29 pm
STL
-
GYE
8h 29m
1 stop
American Airlines Logo
6:00 am - 9:56 pm
GYE
-
STL
15h 56m
1 stop
$808American 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
6:00 am - 9:56 pm
GYE
-
STL
15h 56m
1 stop
$813American Airlines
Thu, Oct 22 - Sun, Oct 25
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
12:59 am - 11:21 pm
UIO
-
STL
22h 22m
1 stop
$818LATAM Airlines
Tue, Aug 11 - Tue, Aug 18
LATAM Airlines Logo
12:52 pm - 1:30 pm
STL
-
GPS
49h 38m
2 stops
LATAM Airlines Logo
10:56 am - 9:54 am
GPS
-
STL
21h 58m
3 stops
$2,009LATAM Airlines
Wed, Aug 19 - Wed, Aug 26

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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 11
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Aug 18
UIO12:59 amQuito Mariscal Sucr
22h 22m
1 stop
STL11:21 pmLambert-St Louis
$818
LATAM Airlines
Jul 20
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Aug 4
UIO12:59 amQuito Mariscal Sucr
10h 47m
1 stop
STL11:46 amLambert-St Louis
$968
LATAM Airlines
Aug 19
STL12:52 pmLambert-St Louis
49h 38m
2 stops
GPS1:30 pmBaltra
Aug 26
GPS10:56 amBaltra
21h 58m
3 stops
STL9:54 amLambert-St Louis
$2,009

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Oct 22
STL5:00 amLambert-St Louis
8h 29m
1 stop
GYE1:29 pmGuayaquil Jose Joaquin de Olmedo
Oct 25
GYE6:00 amGuayaquil Jose Joaquin de Olmedo
15h 56m
1 stop
STL9:56 pmLambert-St Louis
$808
American Airlines
Oct 22
STL6:00 amLambert-St Louis
16h 45m
2 stops
GYE10:45 pmGuayaquil Jose Joaquin de Olmedo
Oct 25
GYE6:00 amGuayaquil Jose Joaquin de Olmedo
14h 52m
2 stops
STL8:52 pmLambert-St Louis
$813
American Airlines
Aug 11
STL6:00 amLambert-St Louis
15h 10m
2 stops
UIO9:10 pmQuito Mariscal Sucr
Aug 19
UIO6:00 amQuito Mariscal Sucr
16h 40m
2 stops
STL10:40 pmLambert-St Louis
$842

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 6, 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
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 8/11

11:15 am-11:25 pm

1 stop12h 10m

Quito Mariscal Sucr

Wed 8/19

12:35 am-10:10 am

1 stop9h 35m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 11/16

11:51 am-9:25 pm

1 stop8h 34m

Quito Mariscal Sucr

Wed 12/16

8:45 am-11:39 pm

2 stops15h 54m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/14

6:15 am-12:30 am

1 stop17h 15m

Quito Mariscal Sucr

Tue 11/17

1:35 am-2:13 pm

1 stop13h 38m

$751

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/14

6:15 am-12:30 am

1 stop17h 15m

Quito Mariscal Sucr

Tue 11/17

1:35 am-3:41 pm

2 stops15h 06m

$756

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 8/11

5:30 pm-11:25 pm

2 stops29h 55m

Quito Mariscal Sucr

Tue 8/18

7:00 am-6:04 pm

1 stop11h 04m

$773

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 8/11

11:15 am-11:25 pm

1 stop12h 10m

Quito Mariscal Sucr

Mon 8/17

7:00 am-10:10 am

1 stop27h 10m

$785

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

5:00 am-1:29 pm

1 stop8h 29m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

6:00 am-9:56 pm

1 stop15h 56m

$808

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

$813

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 8/11

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Tue 8/18

12:59 am-11:21 pm

1 stop22h 22m

$818

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Wed 8/19

12:52 pm-1:30 pm

2 stops49h 38m

Baltra

Wed 8/26

10:56 am-9:54 am

3 stops21h 58m

$2,009

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

10h 30m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 10h 30m
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
11,782 reviews
Search American Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.8
8,452 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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