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Cheap flights from St. Louis to Ecuador from $589

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 2/2. 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.
American Airlines Logo
5:05 am - 11:22 pmSTL-GYE
17h 17m1 stop
American Airlines Logo
3:31 pm - 10:59 amGYE-STL
20h 28m2 stops
$589American Airlines
Find Deal
Mon, Feb 2 - Mon, Mar 2
American Airlines Logo
5:05 am - 11:22 pmSTL-GYE
17h 17m1 stop
American Airlines Logo
3:31 pm - 10:26 amGYE-STL
19h 55m1 stop
$595American Airlines
Find Deal
Mon, Feb 2 - Mon, Mar 2
LATAM Airlines Logo
9:59 am - 9:35 pmSTL-UIO
10h 36m1 stop
LATAM Airlines Logo
11:45 pm - 8:53 amUIO-STL
10h 08m1 stop
$625LATAM Airlines
Find Deal
Thu, Jan 15 - Fri, Jan 23
United Airlines Logo
6:15 am - 11:25 pmSTL-UIO
17h 10m1 stop
United Airlines Logo
12:35 am - 3:04 pmUIO-STL
14h 29m1 stop
$635United Airlines
Find Deal
Fri, May 8 - Fri, May 15
United Airlines Logo
6:15 am - 11:25 pmSTL-UIO
17h 10m1 stop
United Airlines Logo
12:35 am - 3:21 pmUIO-STL
14h 46m2 stops
$639United Airlines
Find Deal
Fri, May 8 - Fri, May 15
American Airlines Logo
6:13 am - 10:23 pmSTL-UIO
16h 10m2 stops
American Airlines Logo
6:30 am - 7:29 pmUIO-STL
12h 59m2 stops
$664American Airlines
Find Deal
Sat, Mar 21 - Thu, Apr 2
LATAM Airlines Logo
7:05 pm - 4:58 amSTL-UIO
33h 53m2 stops
LATAM Airlines Logo
11:20 pm - 8:07 amUIO-STL
8h 47m1 stop
$672LATAM Airlines
Find Deal
Fri, May 8 - Sat, May 16
Delta Logo
9:59 am - 9:35 pmSTL-UIO
10h 36m1 stop
Delta Logo
11:45 pm - 11:37 pmUIO-STL
24h 52m1 stop
$677Delta
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Fri, Jan 23 - Sun, Feb 1
Multiple Airlines Logo
8:30 am - 9:15 amSTL-GYE
23h 45m2 stops
Multiple Airlines Logo
10:25 am - 3:29 pmGYE-STL
30h 04m3 stops
$1,017Multiple Airlines
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Mon, Feb 2 - Mon, Mar 2
Multiple Airlines Logo
4:05 pm - 5:45 pmSTL-GYE
24h 40m2 stops
Multiple Airlines Logo
4:40 am - 3:29 pmGYE-STL
35h 49m2 stops
$1,057Multiple Airlines
Find Deal
Mon, Feb 2 - Sun, Mar 1

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Jan 15
STL9:59 amLambert-St Louis
10h 36m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Jan 23
UIO11:45 pmQuito Mariscal Sucr
10h 08m
1 stop
STL8:53 amLambert-St Louis
$625
Find similar
LATAM Airlines
May 8
STL7:05 pmLambert-St Louis
33h 53m
2 stops
UIO4:58 amQuito Mariscal Sucr
May 16
UIO11:20 pmQuito Mariscal Sucr
8h 47m
1 stop
STL8:07 amLambert-St Louis
$672
Find similar
LATAM Airlines
Jan 15
STL9:59 amLambert-St Louis
42h 18m
2 stops
UIO5:17 amQuito Mariscal Sucr
Jan 23
UIO11:45 pmQuito Mariscal Sucr
10h 08m
1 stop
STL8:53 amLambert-St Louis
$681
Find similar

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Jan 23
STL9:59 amLambert-St Louis
10h 36m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Feb 1
UIO11:45 pmQuito Mariscal Sucr
24h 52m
1 stop
STL11:37 pmLambert-St Louis
$677
Find similar
Delta
Jan 31
STL9:59 amLambert-St Louis
27h 06m
2 stops
UIO2:05 pmQuito Mariscal Sucr
Feb 4
UIO11:45 pmQuito Mariscal Sucr
10h 08m
1 stop
STL8:53 amLambert-St Louis
$699
Find similar
Delta
Dec 4
STL4:32 pmLambert-St Louis
13h 48m
1 stop
GYE7:20 amGuayaquil Jose Joaquin de Olmedo
Feb 20
GYE7:07 pmGuayaquil Jose Joaquin de Olmedo
14h 59m
2 stops
STL9:06 amLambert-St Louis
$3,292
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 December 2, 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

Mon 2/2

5:05 am-11:22 pm

1 stop17h 17m

Guayaquil Jose Joaquin de Olmedo

Mon 3/2

3:31 pm-10:59 am

2 stops20h 28m

$589

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 2/2

5:05 am-11:22 pm

1 stop17h 17m

Guayaquil Jose Joaquin de Olmedo

Mon 3/2

3:31 pm-10:26 am

1 stop19h 55m

$595

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 1/15

9:59 am-9:35 pm

1 stop10h 36m

Quito Mariscal Sucr

Fri 1/23

11:45 pm-8:53 am

1 stop10h 08m

$625

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 5/8

6:15 am-11:25 pm

1 stop17h 10m

Quito Mariscal Sucr

Fri 5/15

12:35 am-3:04 pm

1 stop14h 29m

$635

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 5/8

6:15 am-11:25 pm

1 stop17h 10m

Quito Mariscal Sucr

Fri 5/15

12:35 am-3:21 pm

2 stops14h 46m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 3/21

6:13 am-10:23 pm

2 stops16h 10m

Quito Mariscal Sucr

Thu 4/2

6:30 am-7:29 pm

2 stops12h 59m

$664

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 5/8

7:05 pm-4:58 am

2 stops33h 53m

Quito Mariscal Sucr

Sat 5/16

11:20 pm-8:07 am

1 stop8h 47m

$672

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 1/23

9:59 am-9:35 pm

1 stop10h 36m

Quito Mariscal Sucr

Sun 2/1

11:45 pm-11:37 pm

1 stop24h 52m

$677

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 2/2

8:30 am-9:15 am

2 stops23h 45m

Guayaquil Jose Joaquin de Olmedo

Mon 3/2

10:25 am-3:29 pm

3 stops30h 04m

$1,017

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 2/2

4:05 pm-5:45 pm

2 stops24h 40m

Guayaquil Jose Joaquin de Olmedo

Sun 3/1

4:40 am-3:29 pm

2 stops35h 49m

$1,057

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

Fastest flight time

9h 53m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 9h 53m
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
11,042 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,062 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,009 reviews
Search Delta flights
LATAM AirlinesPriceFrom $664Free CancellationRating
7.5
1,889 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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