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Cheap flights from St. Louis to Ecuador from $295

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 3/15. 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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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
11:06 am - 10:24 pm
STL
-
UIO
11h 18m
1 stop
American Airlines Logo
6:30 am - 10:58 pm
UIO
-
STL
16h 28m
1 stop
$636American Airlines
Thu, May 14 - Tue, May 26
United Airlines Logo
6:00 am - 11:39 pm
STL
-
GYE
17h 39m
2 stops
United Airlines Logo
8:28 am - 9:25 am
GYE
-
STL
24h 57m
2 stops
$639United Airlines
Mon, Mar 30 - Mon, Apr 6
LATAM Airlines Logo
9:59 am - 6:59 pm
STL
-
UIO
9h 00m
1 stop
LATAM Airlines Logo
6:50 pm - 9:36 am
UIO
-
STL
14h 46m
2 stops
$639LATAM Airlines
Sun, Apr 26 - Wed, May 6
American Airlines Logo
5:24 am - 10:24 pm
STL
-
UIO
17h 00m
1 stop
American Airlines Logo
11:59 pm - 4:33 pm
UIO
-
STL
16h 34m
2 stops
$640American Airlines
Thu, May 14 - Tue, May 26
LATAM Airlines Logo
9:59 am - 6:59 pm
STL
-
UIO
9h 00m
1 stop
LATAM Airlines Logo
12:59 am - 10:34 am
UIO
-
STL
9h 35m
1 stop
$646LATAM Airlines
Sun, Apr 26 - Tue, May 5
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
6:50 pm - 12:20 pm
UIO
-
STL
17h 30m
2 stops
$648LATAM Airlines
Thu, Apr 30 - Sun, May 10
Delta Logo
6:00 am - 4:43 am
STL
-
UIO
22h 43m
2 stops
Delta Logo
6:50 pm - 5:46 pm
UIO
-
STL
22h 56m
2 stops
$650Delta
Thu, May 14 - Tue, May 26
Delta Logo
6:00 am - 4:43 am
STL
-
UIO
22h 43m
2 stops
Delta Logo
6:50 pm - 4:10 pm
UIO
-
STL
21h 20m
2 stops
$660Delta
Thu, May 14 - Tue, May 26
LATAM Airlines Logo
6:00 am - 8:35 pm
STL
-
UIO
14h 35m
1 stop
LATAM Airlines Logo
12:59 am - 11:09 am
UIO
-
STL
10h 10m
1 stop
$666LATAM Airlines
Fri, Mar 27 - Thu, Apr 2
Multiple Airlines Logo
4:05 pm - 11:30 pm
STL
-
GYE
31h 25m
3 stops
Multiple Airlines Logo
6:50 pm - 3:24 pm
GYE
-
STL
20h 34m
2 stops
$1,951Multiple Airlines
Mon, Mar 30 - Mon, Apr 6

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
May 14
STL11:06 amLambert-St Louis
8h 51m
1 stop
UIO7:57 pmQuito Mariscal Sucr
May 26
UIO11:59 pmQuito Mariscal Sucr
10h 35m
1 stop
STL10:34 amLambert-St Louis
$636
American Airlines
May 14
STL5:24 amLambert-St Louis
17h 00m
1 stop
UIO10:24 pmQuito Mariscal Sucr
May 26
UIO11:59 pmQuito Mariscal Sucr
16h 34m
2 stops
STL4:33 pmLambert-St Louis
$640
American Airlines
Mar 30
STL5:15 amLambert-St Louis
8h 15m
1 stop
GYE1:30 pmGuayaquil Jose Joaquin de Olmedo
Apr 6
GYE2:30 pmGuayaquil Jose Joaquin de Olmedo
19h 46m
1 stop
STL10:16 amLambert-St Louis
$708

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Apr 26
STL9:59 amLambert-St Louis
9h 00m
1 stop
UIO6:59 pmQuito Mariscal Sucr
May 6
UIO6:50 pmQuito Mariscal Sucr
14h 46m
2 stops
STL9:36 amLambert-St Louis
$639
LATAM Airlines
Apr 26
STL9:59 amLambert-St Louis
9h 00m
1 stop
UIO6:59 pmQuito Mariscal Sucr
May 5
UIO12:59 amQuito Mariscal Sucr
9h 35m
1 stop
STL10:34 amLambert-St Louis
$646
LATAM Airlines
Mar 27
STL6:00 amLambert-St Louis
14h 35m
1 stop
UIO8:35 pmQuito Mariscal Sucr
Apr 2
UIO12:59 amQuito Mariscal Sucr
10h 10m
1 stop
STL11:09 amLambert-St Louis
$666

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 February 14, 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

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 5/14

11:06 am-10:24 pm

1 stop11h 18m

Quito Mariscal Sucr

Tue 5/26

6:30 am-10:58 pm

1 stop16h 28m

$636

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 3/30

6:00 am-11:39 pm

2 stops17h 39m

Guayaquil Jose Joaquin de Olmedo

Mon 4/6

8:28 am-9:25 am

2 stops24h 57m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 4/26

9:59 am-6:59 pm

1 stop9h 00m

Quito Mariscal Sucr

Wed 5/6

6:50 pm-9:36 am

2 stops14h 46m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 5/14

5:24 am-10:24 pm

1 stop17h 00m

Quito Mariscal Sucr

Tue 5/26

11:59 pm-4:33 pm

2 stops16h 34m

$640

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 4/26

9:59 am-6:59 pm

1 stop9h 00m

Quito Mariscal Sucr

Tue 5/5

12:59 am-10:34 am

1 stop9h 35m

$646

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 4/30

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Sun 5/10

6:50 pm-12:20 pm

2 stops17h 30m

$648

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 5/14

6:00 am-4:43 am

2 stops22h 43m

Quito Mariscal Sucr

Tue 5/26

6:50 pm-5:46 pm

2 stops22h 56m

$650

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 5/14

6:00 am-4:43 am

2 stops22h 43m

Quito Mariscal Sucr

Tue 5/26

6:50 pm-4:10 pm

2 stops21h 20m

$660

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 3/27

6:00 am-8:35 pm

1 stop14h 35m

Quito Mariscal Sucr

Thu 4/2

12:59 am-11:09 am

1 stop10h 10m

$666

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 3/30

4:05 pm-11:30 pm

3 stops31h 25m

Guayaquil Jose Joaquin de Olmedo

Mon 4/6

6:50 pm-3:24 pm

2 stops20h 34m

$1,951

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 10% 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

12h 02m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 12h 02m
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
7.2
11,288 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,203 reviews
Search Delta flights
LATAM AirlinesPriceFrom $664Free CancellationRating
7.5
1,920 reviews
Search LATAM Airlines 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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