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Cheap flights from St. Louis to Ecuador from $244

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 5/19. 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
0 bags

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Find the cheapest flights from St. Louis to Ecuador

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
9:59 am - 11:00 pm
STL
-
UIO
13h 01m
2 stops
LATAM Airlines Logo
12:59 am - 9:44 am
UIO
-
STL
8h 45m
1 stop
$687LATAM Airlines
mer, mag 6 - mar, mag 12
American Airlines Logo
6:06 am - 10:37 pm
STL
-
GYE
16h 31m
2 stops
American Airlines Logo
2:37 pm - 8:32 am
GYE
-
STL
17h 55m
2 stops
$692American Airlines
mer, lug 8 - mer, lug 22
United Airlines Logo
8:30 pm - 11:25 pm
STL
-
UIO
26h 55m
2 stops
United Airlines Logo
7:25 am - 8:39 am
UIO
-
STL
25h 14m
2 stops
$692United Airlines
lun, mag 11 - lun, mag 18
American Airlines Logo
5:17 am - 10:37 pm
STL
-
GYE
17h 20m
1 stop
American Airlines Logo
2:37 pm - 8:32 am
GYE
-
STL
17h 55m
2 stops
$694American Airlines
mer, lug 8 - mer, lug 22
Delta Logo
10:49 am - 4:43 am
STL
-
UIO
17h 54m
2 stops
Delta Logo
6:50 pm - 9:44 am
UIO
-
STL
14h 54m
2 stops
$702Delta
dom, mag 10 - dom, mag 17
Delta Logo
7:01 pm - 6:59 pm
STL
-
UIO
23h 58m
1 stop
Delta Logo
12:59 am - 9:44 am
UIO
-
STL
8h 45m
1 stop
$703Delta
dom, mag 10 - sab, mag 16
United Airlines Logo
6:00 am - 5:29 pm
STL
-
GYE
11h 29m
2 stops
United Airlines Logo
8:28 am - 4:01 pm
GYE
-
STL
31h 33m
2 stops
$739United Airlines
ven, mag 8 - ven, mag 15
LATAM Airlines Logo
6:00 am - 9:10 am
STL
-
GPS
52h 10m
3 stops
LATAM Airlines Logo
1:35 pm - 9:44 am
GPS
-
STL
19h 09m
2 stops
$1,283LATAM Airlines
dom, mag 10 - dom, mag 17
Avianca Logo
8:30 am - 12:15 pm
STL
-
SCY
28h 45m
3 stops
Avianca Logo
1:05 pm - 8:39 am
SCY
-
STL
42h 34m
3 stops
$1,732Avianca
mar, apr 21 - mar, apr 28
Avianca Logo
7:09 pm - 12:40 pm
STL
-
GPS
18h 31m
3 stops
Avianca Logo
11:40 am - 8:39 am
GPS
-
STL
43h 59m
3 stops
$2,028Avianca
ven, mag 8 - ven, mag 15

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
May 10
STL10:49 amLambert-St Louis
17h 54m
2 stops
UIO4:43 amQuito Mariscal Sucr
May 17
UIO6:50 pmQuito Mariscal Sucr
14h 54m
2 stops
STL9:44 amLambert-St Louis
$702
Delta
May 10
STL7:01 pmLambert-St Louis
23h 58m
1 stop
UIO6:59 pmQuito Mariscal Sucr
May 16
UIO12:59 amQuito Mariscal Sucr
8h 45m
1 stop
STL9:44 amLambert-St Louis
$703
Delta
May 8
STL6:00 amLambert-St Louis
12h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
May 14
UIO12:59 amQuito Mariscal Sucr
16h 57m
1 stop
STL5:56 pmLambert-St Louis
$707

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Jul 8
STL6:06 amLambert-St Louis
16h 31m
2 stops
GYE10:37 pmGuayaquil Jose Joaquin de Olmedo
Jul 22
GYE2:37 pmGuayaquil Jose Joaquin de Olmedo
17h 55m
2 stops
STL8:32 amLambert-St Louis
$692
American Airlines
Jul 8
STL5:17 amLambert-St Louis
17h 20m
1 stop
GYE10:37 pmGuayaquil Jose Joaquin de Olmedo
Jul 22
GYE2:37 pmGuayaquil Jose Joaquin de Olmedo
17h 55m
2 stops
STL8:32 amLambert-St Louis
$694
American Airlines
May 7
STL11:06 amLambert-St Louis
10h 06m
1 stop
GYE9:12 pmGuayaquil Jose Joaquin de Olmedo
May 14
GYE6:05 amGuayaquil Jose Joaquin de Olmedo
16h 19m
1 stop
STL10:24 pmLambert-St Louis
$705

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 marzo 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
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

mer 5/6

9:59 am-11:00 pm

2 stops13h 01m

Quito Mariscal Sucr

mar 5/12

12:59 am-9:44 am

1 stop8h 45m

$687

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

mer 7/8

6:06 am-10:37 pm

2 stops16h 31m

Guayaquil Jose Joaquin de Olmedo

mer 7/22

2:37 pm-8:32 am

2 stops17h 55m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

lun 5/11

8:30 pm-11:25 pm

2 stops26h 55m

Quito Mariscal Sucr

lun 5/18

7:25 am-8:39 am

2 stops25h 14m

$692

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

mer 7/8

5:17 am-10:37 pm

1 stop17h 20m

Guayaquil Jose Joaquin de Olmedo

mer 7/22

2:37 pm-8:32 am

2 stops17h 55m

$694

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

dom 5/10

10:49 am-4:43 am

2 stops17h 54m

Quito Mariscal Sucr

dom 5/17

6:50 pm-9:44 am

2 stops14h 54m

$702

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

dom 5/10

7:01 pm-6:59 pm

1 stop23h 58m

Quito Mariscal Sucr

sab 5/16

12:59 am-9:44 am

1 stop8h 45m

$703

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

ven 5/8

6:00 am-5:29 pm

2 stops11h 29m

Guayaquil Jose Joaquin de Olmedo

ven 5/15

8:28 am-4:01 pm

2 stops31h 33m

$739

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

dom 5/10

6:00 am-9:10 am

3 stops52h 10m

Baltra

dom 5/17

1:35 pm-9:44 am

2 stops19h 09m

$1,283

St. LouisSan Cristobal

STL - SCY

STLSCY

Lambert-St Louis

mar 4/21

8:30 am-12:15 pm

3 stops28h 45m

San Cristobal

mar 4/28

1:05 pm-8:39 am

3 stops42h 34m

$1,732

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

ven 5/8

7:09 pm-12:40 pm

3 stops18h 31m

Baltra

ven 5/15

11:40 am-8:39 am

3 stops43h 59m

$2,028

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 21% 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

14h 06m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 14h 06m
There are no direct flights from St. Louis to Ecuador. There are no popular flight routes from St. Louis to Ecuador.
Search flight deals

  • 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
11,509 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,493 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $655Free CancellationRating
7.4
1,902 reviews
Search LATAM Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,343 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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