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Cheap flights from St. Louis to Ecuador from $600

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 7/4. 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.
Multiple Airlines Logo
2:56 pm - 6:50 pm
STL
-
GYE
51h 54m
3 stops
Multiple Airlines Logo
10:05 am - 2:56 pm
GYE
-
STL
28h 51m
3 stops
$600Multiple Airlines
Sat, Jul 4 - Fri, Jul 10
American Airlines Logo
6:43 am - 10:12 pm
STL
-
UIO
15h 29m
2 stops
American Airlines Logo
11:59 pm - 10:24 am
UIO
-
STL
10h 25m
1 stop
$692American Airlines
Wed, Jul 15 - Wed, Jul 22
United Airlines Logo
6:14 am - 11:25 pm
STL
-
UIO
17h 11m
1 stop
United Airlines Logo
12:35 am - 8:49 am
UIO
-
STL
32h 14m
2 stops
$709United Airlines
Mon, Jul 13 - Mon, Jul 20
American Airlines Logo
9:47 am - 11:02 pm
STL
-
UIO
12h 15m
2 stops
American Airlines Logo
8:27 am - 10:32 pm
UIO
-
STL
15h 05m
1 stop
$732American Airlines
Sat, Nov 7 - Sat, Nov 14
United Airlines Logo
6:30 pm - 5:00 am
STL
-
UIO
10h 30m
1 stop
United Airlines Logo
12:35 am - 10:45 pm
UIO
-
STL
22h 10m
1 stop
$742United Airlines
Mon, Jul 13 - Mon, Jul 20
United Airlines Logo
6:14 am - 5:00 am
STL
-
UIO
22h 46m
1 stop
United Airlines Logo
12:35 am - 10:07 am
UIO
-
STL
9h 32m
1 stop
$758United Airlines
Fri, Jul 10 - Sat, Jul 18
Copa Airlines Logo
6:15 am - 11:38 pm
STL
-
GYE
17h 23m
2 stops
Copa Airlines Logo
12:22 pm - 8:27 pm
GYE
-
STL
32h 05m
2 stops
$770Copa Airlines
Fri, Aug 14 - Fri, Aug 21
Copa Airlines Logo
11:15 am - 11:38 pm
STL
-
GYE
12h 23m
2 stops
Copa Airlines Logo
8:28 am - 10:10 am
GYE
-
STL
25h 42m
2 stops
$811Copa Airlines
Thu, Aug 13 - Wed, Aug 19
LATAM Airlines Logo
6:58 pm - 9:27 am
STL
-
GPS
39h 29m
3 stops
LATAM Airlines Logo
2:10 pm - 8:37 pm
GPS
-
STL
29h 27m
2 stops
$3,488LATAM Airlines
Fri, Jul 17 - Fri, Jul 24
LATAM Airlines Logo
1:22 pm - 12:55 pm
STL
-
GPS
48h 33m
2 stops
LATAM Airlines Logo
2:10 pm - 12:30 pm
GPS
-
STL
21h 20m
2 stops
$3,614LATAM Airlines
Fri, Jul 17 - Fri, Jul 24

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Jul 15
STL6:43 amLambert-St Louis
15h 29m
2 stops
UIO10:12 pmQuito Mariscal Sucr
Jul 22
UIO11:59 pmQuito Mariscal Sucr
10h 25m
1 stop
STL10:24 amLambert-St Louis
$692
American Airlines
Nov 7
STL9:47 amLambert-St Louis
12h 15m
2 stops
UIO11:02 pmQuito Mariscal Sucr
Nov 14
UIO8:27 amQuito Mariscal Sucr
15h 05m
1 stop
STL10:32 pmLambert-St Louis
$732
American Airlines
Jul 15
STL6:43 amLambert-St Louis
15h 29m
2 stops
UIO10:12 pmQuito Mariscal Sucr
Jul 22
UIO11:59 pmQuito Mariscal Sucr
16h 29m
2 stops
STL4:28 pmLambert-St Louis
$736

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Jul 13
STL6:14 amLambert-St Louis
17h 11m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Jul 20
UIO12:35 amQuito Mariscal Sucr
32h 14m
2 stops
STL8:49 amLambert-St Louis
$709
United Airlines
Jul 13
STL6:30 pmLambert-St Louis
10h 30m
1 stop
UIO5:00 amQuito Mariscal Sucr
Jul 20
UIO12:35 amQuito Mariscal Sucr
22h 10m
1 stop
STL10:45 pmLambert-St Louis
$742
United Airlines
Jul 10
STL6:14 amLambert-St Louis
22h 46m
1 stop
UIO5:00 amQuito Mariscal Sucr
Jul 18
UIO12:35 amQuito Mariscal Sucr
9h 32m
1 stop
STL10:07 amLambert-St Louis
$758

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 June 6, 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 - GYE

STLGYE

Lambert-St Louis

Sat 7/4

2:56 pm-6:50 pm

3 stops51h 54m

Guayaquil Jose Joaquin de Olmedo

Fri 7/10

10:05 am-2:56 pm

3 stops28h 51m

$600
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 7/15

6:43 am-10:12 pm

2 stops15h 29m

Quito Mariscal Sucr

Wed 7/22

11:59 pm-10:24 am

1 stop10h 25m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 7/13

6:14 am-11:25 pm

1 stop17h 11m

Quito Mariscal Sucr

Mon 7/20

12:35 am-8:49 am

2 stops32h 14m

$709

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/7

9:47 am-11:02 pm

2 stops12h 15m

Quito Mariscal Sucr

Sat 11/14

8:27 am-10:32 pm

1 stop15h 05m

$732

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 7/13

6:30 pm-5:00 am

1 stop10h 30m

Quito Mariscal Sucr

Mon 7/20

12:35 am-10:45 pm

1 stop22h 10m

$742

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 7/10

6:14 am-5:00 am

1 stop22h 46m

Quito Mariscal Sucr

Sat 7/18

12:35 am-10:07 am

1 stop9h 32m

$758

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Fri 8/14

6:15 am-11:38 pm

2 stops17h 23m

Guayaquil Jose Joaquin de Olmedo

Fri 8/21

12:22 pm-8:27 pm

2 stops32h 05m

$770

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 8/13

11:15 am-11:38 pm

2 stops12h 23m

Guayaquil Jose Joaquin de Olmedo

Wed 8/19

8:28 am-10:10 am

2 stops25h 42m

$811

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Fri 7/17

6:58 pm-9:27 am

3 stops39h 29m

Baltra

Fri 7/24

2:10 pm-8:37 pm

2 stops29h 27m

$3,488

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Fri 7/17

1:22 pm-12:55 pm

2 stops48h 33m

Baltra

Fri 7/24

2:10 pm-12:30 pm

2 stops21h 20m

$3,614

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 month to fly to Ecuador?

In general, November is the cheapest month to fly from St. Louis to Ecuador. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you’re not able to fly to Ecuador in November, then October is your next best option. Flight prices from St. Louis to Ecuador during October average around $0.

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

11h 16m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 11h 16m
There are no direct flights from St. Louis to Ecuador. There are no popular flight routes from St. Louis to Ecuador.
Search flight deals

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 $516Free CancellationRating
7.1
11,651 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.8
8,395 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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