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Cheap flights from St. Louis to Ecuador from $611

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

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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.
American Airlines Logo
6:00 am - 10:35 pmSTL  Lambert-St Louis-GYE Guayaquil Jose Joaquin de Olmedo
16h 35m2 stops Philadelphia Miami
American Airlines Logo
2:29 pm - 10:51 amGYE  Guayaquil Jose Joaquin de Olmedo-STL Lambert-St Louis
20h 22m2 stops Miami Chicago O'Hare Intl
$611American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
6:00 am - 10:45 pmSTL  Lambert-St Louis-GYE Guayaquil Jose Joaquin de Olmedo
16h 45m2 stops Philadelphia Miami
American Airlines Logo
6:00 am - 9:56 pmGYE  Guayaquil Jose Joaquin de Olmedo-STL Lambert-St Louis
15h 56m1 stop Miami
$611American Airlines
Thu, Oct 22 - Sun, Oct 25
LATAM Airlines Logo
6:00 am - 6:42 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
11h 42m2 stops Atlanta Hartsfield-Jackson Miami
LATAM Airlines Logo
8:45 am - 11:56 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
16h 11m2 stops Miami Atlanta Hartsfield-Jackson
$692LATAM Airlines
Thu, Nov 19 - Mon, Nov 30
Air Canada Logo
4:05 pm - 1:05 amSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
32h 00m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:30 am - 3:26 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
30h 56m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$708Air Canada
Sat, Jan 23 - Sat, Jan 30
United Airlines Logo
11:00 am - 12:30 amSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 30m1 stop Houston George Bush Intcntl
United Airlines Logo
1:35 am - 9:42 amUIO  Quito Mariscal Sucr-STL Lambert-St Louis
9h 07m1 stop Houston George Bush Intcntl
$737United Airlines
Sat, Jan 23 - Fri, Jan 29
Delta Logo
7:00 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
11h 59m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:59 am - 3:54 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 55m1 stop Atlanta Hartsfield-Jackson
$743Delta
Thu, Sep 3 - Tue, Sep 8
American Airlines Logo
5:00 am - 10:18 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
16h 18m1 stop Miami
American Airlines Logo
6:45 am - 9:50 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
16h 05m1 stop Miami
$813American Airlines
Thu, Nov 19 - Mon, Nov 30
American Airlines Logo
5:10 am - 11:02 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
16h 52m1 stop Miami
American Airlines Logo
12:54 am - 11:09 amUIO  Quito Mariscal Sucr-STL Lambert-St Louis
11h 15m1 stop Miami
$873American Airlines
Tue, Dec 15 - Thu, Dec 17
Delta Logo
12:30 pm - 6:42 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
29h 12m2 stops Minneapolis St Paul Miami
Delta Logo
8:45 am - 11:39 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
15h 54m2 stops Miami Atlanta Hartsfield-Jackson
$1,027Delta
Sat, Dec 19 - Tue, Dec 29
Delta Logo
12:30 pm - 6:42 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
29h 12m2 stops Minneapolis St Paul Miami
Delta Logo
8:45 am - 11:18 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
39h 33m2 stops Miami Minneapolis St Paul
$1,048Delta
Sat, Dec 19 - Thu, Dec 31

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Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Nov 10
STL7:18 pmLambert-St Louis
22h 24m
2 stops
UIO6:42 pmQuito Mariscal Sucr
Nov 24
UIO8:45 amQuito Mariscal Sucr
16h 11m
2 stops
STL11:56 pmLambert-St Louis
$722
Delta
Sep 3
STL7:00 amLambert-St Louis
11h 59m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 8
UIO12:59 amQuito Mariscal Sucr
14h 55m
1 stop
STL3:54 pmLambert-St Louis
$743
Delta
Dec 19
STL12:30 pmLambert-St Louis
29h 12m
2 stops
UIO6:42 pmQuito Mariscal Sucr
Dec 29
UIO8:45 amQuito Mariscal Sucr
15h 54m
2 stops
STL11:39 pmLambert-St Louis
$1,027

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Nov 19
STL6:00 amLambert-St Louis
11h 42m
2 stops
UIO6:42 pmQuito Mariscal Sucr
Nov 30
UIO8:45 amQuito Mariscal Sucr
16h 11m
2 stops
STL11:56 pmLambert-St Louis
$692
LATAM Airlines
Nov 10
STL5:37 pmLambert-St Louis
26h 48m
1 stop
UIO9:25 pmQuito Mariscal Sucr
Nov 23
UIO12:55 amQuito Mariscal Sucr
16h 37m
1 stop
STL4:32 pmLambert-St Louis
$725
LATAM Airlines
Jan 23
STL6:59 pmLambert-St Louis
46h 43m
2 stops
UIO6:42 pmQuito Mariscal Sucr
Jan 29
UIO12:55 amQuito Mariscal Sucr
10h 53m
1 stop
STL10:48 amLambert-St Louis
$738

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 August 5, 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 Lambert-St Louis - GYE Guayaquil Jose Joaquin de Olmedo

STLGYE

Lambert-St Louis

Thu 10/22

6:00 am-10:35 pm

2 stops16h 35m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:29 pm-10:51 am

2 stops20h 22m

$611

St. LouisGuayaquil

STL Lambert-St Louis - GYE Guayaquil Jose Joaquin de Olmedo

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. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 11/19

6:00 am-6:42 pm

2 stops11h 42m

Quito Mariscal Sucr

Mon 11/30

8:45 am-11:56 pm

2 stops16h 11m

$692

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Sat 1/23

4:05 pm-1:05 am

2 stops32h 00m

Quito Mariscal Sucr

Sat 1/30

9:30 am-3:26 pm

2 stops30h 56m

$708
Quickest round-trip

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Sat 1/23

11:00 am-12:30 am

1 stop12h 30m

Quito Mariscal Sucr

Fri 1/29

1:35 am-9:42 am

1 stop9h 07m

$737

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 9/3

7:00 am-6:59 pm

1 stop11h 59m

Quito Mariscal Sucr

Tue 9/8

12:59 am-3:54 pm

1 stop14h 55m

$743

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 11/19

5:00 am-10:18 pm

1 stop16h 18m

Quito Mariscal Sucr

Mon 11/30

6:45 am-9:50 pm

1 stop16h 05m

$813

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Tue 12/15

5:10 am-11:02 pm

1 stop16h 52m

Quito Mariscal Sucr

Thu 12/17

12:54 am-11:09 am

1 stop11h 15m

$873

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Sat 12/19

12:30 pm-6:42 pm

2 stops29h 12m

Quito Mariscal Sucr

Tue 12/29

8:45 am-11:39 pm

2 stops15h 54m

$1,027

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Sat 12/19

12:30 pm-6:42 pm

2 stops29h 12m

Quito Mariscal Sucr

Thu 12/31

8:45 am-11:18 pm

2 stops39h 33m

$1,048

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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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 28m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 8h 28m
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
11,848 reviews
Search American Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.8
8,491 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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