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Cheap flights from St. Louis to Ecuador from $369

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 6/29. 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
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
5:18 am - 10:37 pm
STL
-
GYE
17h 19m
1 stop
American Airlines Logo
6:00 am - 11:32 pm
GYE
-
STL
17h 32m
2 stops
$700American Airlines
Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
5:18 am - 10:37 pm
STL
-
GYE
17h 19m
1 stop
American Airlines Logo
2:25 pm - 10:24 am
GYE
-
STL
19h 59m
1 stop
$708American Airlines
Tue, Jul 21 - Tue, Jul 28
United Airlines Logo
7:05 pm - 11:25 pm
STL
-
UIO
28h 20m
2 stops
United Airlines Logo
12:35 am - 8:39 am
UIO
-
STL
32h 04m
2 stops
$709United Airlines
Wed, Jul 8 - Tue, Jul 14
United Airlines Logo
5:33 pm - 11:25 pm
STL
-
UIO
29h 52m
2 stops
United Airlines Logo
7:25 am - 10:34 am
UIO
-
STL
27h 09m
2 stops
$712United Airlines
Wed, Jul 8 - Fri, Jul 17
Delta Logo
11:51 am - 9:25 pm
STL
-
UIO
8h 34m
1 stop
Delta Logo
12:55 am - 6:01 pm
UIO
-
STL
18h 06m
1 stop
$727Delta
Sat, Nov 7 - Fri, Nov 13
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
American Airlines Logo
5:18 am - 10:12 pm
STL
-
UIO
16h 54m
1 stop
American Airlines Logo
6:00 am - 10:54 pm
UIO
-
STL
16h 54m
1 stop
$746American Airlines
Thu, Jul 9 - Fri, Jul 17
Multiple Airlines Logo
7:03 pm - 11:30 pm
STL
-
GYE
28h 27m
3 stops
Multiple Airlines Logo
7:05 pm - 6:15 pm
GYE
-
STL
47h 10m
2 stops
$760Multiple Airlines
Tue, Jul 7 - Tue, Jul 14
Multiple Airlines Logo
7:03 pm - 11:30 pm
STL
-
GYE
28h 27m
3 stops
Multiple Airlines Logo
6:50 pm - 6:15 pm
GYE
-
STL
47h 25m
3 stops
$766Multiple Airlines
Tue, Jul 7 - Tue, Jul 14
Copa Airlines Logo
7:05 pm - 8:51 pm
STL
-
GYE
25h 46m
2 stops
Copa Airlines Logo
6:27 pm - 9:30 pm
GYE
-
STL
27h 03m
2 stops
$780Copa Airlines
Sat, Jun 6 - Mon, Jun 8

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Jul 8
STL7:05 pmLambert-St Louis
28h 20m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Jul 14
UIO12:35 amQuito Mariscal Sucr
32h 04m
2 stops
STL8:39 amLambert-St Louis
$709
United Airlines
Jul 8
STL5:33 pmLambert-St Louis
29h 52m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Jul 17
UIO7:25 amQuito Mariscal Sucr
27h 09m
2 stops
STL10:34 amLambert-St Louis
$712
United Airlines
Jul 6
STL11:25 amLambert-St Louis
17h 35m
2 stops
UIO5:00 amQuito Mariscal Sucr
Jul 13
UIO7:25 amQuito Mariscal Sucr
25h 14m
2 stops
STL8:39 amLambert-St Louis
$767

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Nov 7
STL11:51 amLambert-St Louis
8h 34m
1 stop
UIO9:25 pmQuito Mariscal Sucr
Nov 13
UIO12:55 amQuito Mariscal Sucr
18h 06m
1 stop
STL6:01 pmLambert-St Louis
$727
Delta
Jun 7
STL9:21 amLambert-St Louis
9h 38m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Jun 13
UIO12:59 amQuito Mariscal Sucr
8h 47m
1 stop
STL9:46 amLambert-St Louis
$963

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 May 25, 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

Tue 7/21

5:18 am-10:37 pm

1 stop17h 19m

Guayaquil Jose Joaquin de Olmedo

Tue 7/28

6:00 am-11:32 pm

2 stops17h 32m

$700

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 7/21

5:18 am-10:37 pm

1 stop17h 19m

Guayaquil Jose Joaquin de Olmedo

Tue 7/28

2:25 pm-10:24 am

1 stop19h 59m

$708

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 7/8

7:05 pm-11:25 pm

2 stops28h 20m

Quito Mariscal Sucr

Tue 7/14

12:35 am-8:39 am

2 stops32h 04m

$709

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 7/8

5:33 pm-11:25 pm

2 stops29h 52m

Quito Mariscal Sucr

Fri 7/17

7:25 am-10:34 am

2 stops27h 09m

$712
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/7

11:51 am-9:25 pm

1 stop8h 34m

Quito Mariscal Sucr

Fri 11/13

12:55 am-6:01 pm

1 stop18h 06m

$727

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

Thu 7/9

5:18 am-10:12 pm

1 stop16h 54m

Quito Mariscal Sucr

Fri 7/17

6:00 am-10:54 pm

1 stop16h 54m

$746

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 7/7

7:03 pm-11:30 pm

3 stops28h 27m

Guayaquil Jose Joaquin de Olmedo

Tue 7/14

7:05 pm-6:15 pm

2 stops47h 10m

$760

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 7/7

7:03 pm-11:30 pm

3 stops28h 27m

Guayaquil Jose Joaquin de Olmedo

Tue 7/14

6:50 pm-6:15 pm

3 stops47h 25m

$766

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sat 6/6

7:05 pm-8:51 pm

2 stops25h 46m

Guayaquil Jose Joaquin de Olmedo

Mon 6/8

6:27 pm-9:30 pm

2 stops27h 03m

$780

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

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

10h 59m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 10h 59m
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
11,631 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,436 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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