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Cheap flights from St. Louis to Ecuador from $418

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 1/6. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:51 am - 11:53 pmSTL-GYE
11h 02m1 stop
Multiple Airlines Logo
7:05 pm - 9:46 amGYE-STL
39h 41m2 stops
$418Multiple Airlines
Find Deal
Tue, Jan 6 - Tue, Jan 13
Multiple Airlines Logo
11:51 am - 11:53 pmSTL-GYE
11h 02m1 stop
Multiple Airlines Logo
6:50 pm - 10:04 amGYE-STL
40h 14m2 stops
$421Multiple Airlines
Find Deal
Tue, Dec 30 - Mon, Jan 12
United Airlines Logo
6:00 am - 8:43 pmSTL-GYE
13h 43m2 stops
United Airlines Logo
2:35 pm - 9:22 amGYE-STL
43h 47m2 stops
$587United Airlines
Find Deal
Wed, Dec 31 - Tue, Jan 13
LATAM Airlines Logo
6:00 am - 9:35 pmSTL-UIO
14h 35m1 stop
LATAM Airlines Logo
7:00 pm - 5:43 pmUIO-STL
23h 43m2 stops
$639LATAM Airlines
Find Deal
Sun, Feb 1 - Sun, Feb 22
American Airlines Logo
5:05 am - 11:50 pmSTL-GYE
17h 45m1 stop
American Airlines Logo
7:15 am - 5:22 pmGYE-STL
11h 07m1 stop
$653American Airlines
Find Deal
Wed, Dec 31 - Tue, Jan 13
United Airlines Logo
6:00 am - 12:30 amSTL-UIO
17h 30m1 stop
United Airlines Logo
12:35 am - 2:31 pmUIO-STL
37h 56m2 stops
$655United Airlines
Find Deal
Fri, Mar 6 - Thu, Mar 12
American Airlines Logo
7:05 am - 11:50 pmSTL-GYE
15h 45m2 stops
American Airlines Logo
7:15 am - 11:12 pmGYE-STL
16h 57m2 stops
$658American Airlines
Find Deal
Wed, Dec 31 - Tue, Jan 13
LATAM Airlines Logo
9:59 am - 9:35 pmSTL-UIO
10h 36m1 stop
LATAM Airlines Logo
7:05 am - 9:08 amUIO-STL
27h 03m2 stops
$672LATAM Airlines
Find Deal
Sun, Feb 1 - Sun, Feb 22
Delta Logo
4:00 pm - 2:15 pmSTL-UIO
22h 15m2 stops
Delta Logo
11:30 pm - 3:01 pmUIO-STL
15h 31m1 stop
$746Delta
Find Deal
Mon, Apr 6 - Wed, Apr 8
Delta Logo
7:10 am - 5:17 amSTL-UIO
21h 07m2 stops
Delta Logo
7:00 pm - 4:01 pmUIO-STL
21h 01m2 stops
$807Delta
Find Deal
Fri, Mar 6 - Fri, Mar 13

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Feb 1
STL6:00 amLambert-St Louis
14h 35m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Feb 22
UIO7:00 pmQuito Mariscal Sucr
23h 43m
2 stops
STL5:43 pmLambert-St Louis
$639
Find similar
LATAM Airlines
Feb 1
STL9:59 amLambert-St Louis
10h 36m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Feb 22
UIO7:05 amQuito Mariscal Sucr
27h 03m
2 stops
STL9:08 amLambert-St Louis
$672
Find similar
LATAM Airlines
Feb 1
STL3:45 pmLambert-St Louis
36h 32m
2 stops
UIO5:17 amQuito Mariscal Sucr
Feb 22
UIO7:00 pmQuito Mariscal Sucr
23h 43m
2 stops
STL5:43 pmLambert-St Louis
$742
Find similar

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Apr 6
STL4:00 pmLambert-St Louis
22h 15m
2 stops
UIO2:15 pmQuito Mariscal Sucr
Apr 8
UIO11:30 pmQuito Mariscal Sucr
15h 31m
1 stop
STL3:01 pmLambert-St Louis
$746
Find similar
Delta
Mar 6
STL7:10 amLambert-St Louis
21h 07m
2 stops
UIO5:17 amQuito Mariscal Sucr
Mar 13
UIO7:00 pmQuito Mariscal Sucr
21h 01m
2 stops
STL4:01 pmLambert-St Louis
$807
Find similar
Delta
Dec 14
STL9:30 amLambert-St Louis
9h 30m
1 stop
UIO8:00 pmQuito Mariscal Sucr
Dec 18
UIO11:45 pmQuito Mariscal Sucr
12h 09m
1 stop
STL10:54 amLambert-St Louis
$808
Find similar

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 November 10, 2025.
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. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 1/6

11:51 am-11:53 pm

1 stop11h 02m

Guayaquil Jose Joaquin de Olmedo

Tue 1/13

7:05 pm-9:46 am

2 stops39h 41m

$418

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 12/30

11:51 am-11:53 pm

1 stop11h 02m

Guayaquil Jose Joaquin de Olmedo

Mon 1/12

6:50 pm-10:04 am

2 stops40h 14m

$421

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 12/31

6:00 am-8:43 pm

2 stops13h 43m

Guayaquil Jose Joaquin de Olmedo

Tue 1/13

2:35 pm-9:22 am

2 stops43h 47m

$587

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

6:00 am-9:35 pm

1 stop14h 35m

Quito Mariscal Sucr

Sun 2/22

7:00 pm-5:43 pm

2 stops23h 43m

$639

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 12/31

5:05 am-11:50 pm

1 stop17h 45m

Guayaquil Jose Joaquin de Olmedo

Tue 1/13

7:15 am-5:22 pm

1 stop11h 07m

$653

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 3/6

6:00 am-12:30 am

1 stop17h 30m

Quito Mariscal Sucr

Thu 3/12

12:35 am-2:31 pm

2 stops37h 56m

$655

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 12/31

7:05 am-11:50 pm

2 stops15h 45m

Guayaquil Jose Joaquin de Olmedo

Tue 1/13

7:15 am-11:12 pm

2 stops16h 57m

$658

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

9:59 am-9:35 pm

1 stop10h 36m

Quito Mariscal Sucr

Sun 2/22

7:05 am-9:08 am

2 stops27h 03m

$672

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 4/6

4:00 pm-2:15 pm

2 stops22h 15m

Quito Mariscal Sucr

Wed 4/8

11:30 pm-3:01 pm

1 stop15h 31m

$746

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 3/6

7:10 am-5:17 am

2 stops21h 07m

Quito Mariscal Sucr

Fri 3/13

7:00 pm-4:01 pm

2 stops21h 01m

$807

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

What is the cheapest day to depart on your flight to Ecuador?

The cheapest day to depart from St. Louis to Ecuador is on a Tuesday. Travelers who choose to depart for Ecuador on a Tuesday will often find tickets for as low as $549. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $862. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ecuador.

What is the cheapest time of day to depart on your flight to Ecuador?

Flying to Ecuador from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $656 when looking at flights departing in the afternoon. Flights to Ecuador are more costly in the morning, with an average ticket price of $689. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on St. Louis to Ecuador flights?

You could potentially save up to 6% 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

Direct flights

None
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
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,011 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,004 reviews
Search Delta flights
LATAM AirlinesPriceFrom $664Free CancellationRating
7.5
1,870 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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