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Cheap flights from St. Louis to Ecuador from $170

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 6/10. 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.
LATAM Airlines Logo
10:49 am - 6:59 pm
STL
-
UIO
8h 10m
1 stop
LATAM Airlines Logo
12:59 am - 9:44 am
UIO
-
STL
8h 45m
1 stop
$687LATAM Airlines
Thu, May 28 - Wed, Jun 3
American Airlines Logo
11:18 am - 11:59 pm
STL
-
UIO
12h 41m
2 stops
American Airlines Logo
6:01 am - 8:52 pm
UIO
-
STL
14h 51m
2 stops
$692American Airlines
Thu, May 28 - Thu, Jun 4
American Airlines Logo
5:33 am - 7:00 pm
STL
-
GYE
13h 27m
1 stop
American Airlines Logo
8:20 am - 11:12 pm
GYE
-
STL
14h 52m
1 stop
$695American Airlines
Wed, Sep 9 - Thu, Sep 17
United Airlines Logo
5:33 pm - 11:25 pm
STL
-
UIO
29h 52m
2 stops
United Airlines Logo
12:35 am - 10:07 am
UIO
-
STL
9h 32m
1 stop
$787United Airlines
Wed, Jul 8 - Thu, Jul 16
Copa Airlines Logo
5:41 pm - 11:36 pm
STL
-
GYE
29h 55m
2 stops
Copa Airlines Logo
6:27 pm - 12:11 pm
GYE
-
STL
17h 44m
2 stops
$818Copa Airlines
Tue, Jun 2 - Thu, Jun 11
Copa Airlines Logo
7:45 am - 12:34 am
STL
-
UIO
16h 49m
2 stops
Copa Airlines Logo
6:30 pm - 9:21 pm
UIO
-
STL
26h 51m
2 stops
$819Copa Airlines
Wed, May 13 - Wed, May 20
Delta Logo
7:12 pm - 6:59 pm
STL
-
UIO
23h 47m
1 stop
Delta Logo
6:50 pm - 3:50 pm
UIO
-
STL
21h 00m
2 stops
$823Delta
Fri, Jun 19 - Sat, Jun 27
United Airlines Logo
6:15 am - 11:37 pm
STL
-
GYE
17h 22m
2 stops
United Airlines Logo
2:35 pm - 10:06 pm
GYE
-
STL
31h 31m
2 stops
$823United Airlines
Thu, Oct 22 - Sun, Oct 25
Delta Logo
7:08 am - 4:43 am
STL
-
UIO
21h 35m
2 stops
Delta Logo
6:50 pm - 3:50 pm
UIO
-
STL
21h 00m
2 stops
$847Delta
Fri, Jun 19 - Sat, Jun 27
LATAM Airlines Logo
7:05 pm - 1:30 pm
STL
-
GPS
43h 25m
2 stops
LATAM Airlines Logo
1:35 pm - 6:01 pm
GPS
-
STL
27h 26m
2 stops
$1,819LATAM Airlines
Wed, Oct 21 - Sun, Oct 25

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
May 28
STL10:49 amLambert-St Louis
8h 10m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Jun 3
UIO12:59 amQuito Mariscal Sucr
8h 45m
1 stop
STL9:44 amLambert-St Louis
$687
LATAM Airlines
Jun 22
STL7:12 pmLambert-St Louis
23h 47m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Jun 27
UIO6:50 pmQuito Mariscal Sucr
29h 06m
2 stops
STL11:56 pmLambert-St Louis
$865
LATAM Airlines
Aug 3
STL5:19 pmLambert-St Louis
25h 40m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Aug 10
UIO6:30 pmQuito Mariscal Sucr
29h 07m
2 stops
STL11:37 pmLambert-St Louis
$979

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
May 28
STL11:18 amLambert-St Louis
12h 41m
2 stops
UIO11:59 pmQuito Mariscal Sucr
Jun 4
UIO6:01 amQuito Mariscal Sucr
14h 51m
2 stops
STL8:52 pmLambert-St Louis
$692
American Airlines
Jun 11
STL5:16 amLambert-St Louis
8h 15m
1 stop
GYE1:31 pmGuayaquil Jose Joaquin de Olmedo
Jun 20
GYE6:01 amGuayaquil Jose Joaquin de Olmedo
17h 58m
2 stops
STL11:59 pmLambert-St Louis
$750
American Airlines
Jul 8
STL5:18 amLambert-St Louis
18h 40m
1 stop
UIO11:58 pmQuito Mariscal Sucr
Jul 17
UIO6:00 amQuito Mariscal Sucr
16h 53m
1 stop
STL10:53 pmLambert-St Louis
$830

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 April 30, 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
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 5/28

10:49 am-6:59 pm

1 stop8h 10m

Quito Mariscal Sucr

Wed 6/3

12:59 am-9:44 am

1 stop8h 45m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 5/28

11:18 am-11:59 pm

2 stops12h 41m

Quito Mariscal Sucr

Thu 6/4

6:01 am-8:52 pm

2 stops14h 51m

$692

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 9/9

5:33 am-7:00 pm

1 stop13h 27m

Guayaquil Jose Joaquin de Olmedo

Thu 9/17

8:20 am-11:12 pm

1 stop14h 52m

$695

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 7/8

5:33 pm-11:25 pm

2 stops29h 52m

Quito Mariscal Sucr

Thu 7/16

12:35 am-10:07 am

1 stop9h 32m

$787

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 6/2

5:41 pm-11:36 pm

2 stops29h 55m

Guayaquil Jose Joaquin de Olmedo

Thu 6/11

6:27 pm-12:11 pm

2 stops17h 44m

$818

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 5/13

7:45 am-12:34 am

2 stops16h 49m

Quito Mariscal Sucr

Wed 5/20

6:30 pm-9:21 pm

2 stops26h 51m

$819

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 6/19

7:12 pm-6:59 pm

1 stop23h 47m

Quito Mariscal Sucr

Sat 6/27

6:50 pm-3:50 pm

2 stops21h 00m

$823

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

6:15 am-11:37 pm

2 stops17h 22m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

2:35 pm-10:06 pm

2 stops31h 31m

$823

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 6/19

7:08 am-4:43 am

2 stops21h 35m

Quito Mariscal Sucr

Sat 6/27

6:50 pm-3:50 pm

2 stops21h 00m

$847

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Wed 10/21

7:05 pm-1:30 pm

2 stops43h 25m

Baltra

Sun 10/25

1:35 pm-6:01 pm

2 stops27h 26m

$1,819

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, October 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 October, then December is your next best option. Flight prices from St. Louis to Ecuador during December average around $396.

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
11,684 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $655Free CancellationRating
7.4
1,911 reviews
Search LATAM Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,464 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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