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Cheap flights from St. Louis to Ecuador from $231

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 6/7. 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.
United Airlines Logo
11:00 am - 11:30 pm
STL
-
UIO
12h 30m
1 stop
United Airlines Logo
1:35 am - 4:35 pm
UIO
-
STL
16h 00m
1 stop
$687United Airlines
Wed, Oct 28 - Tue, Nov 10
Delta Logo
5:30 pm - 4:58 am
STL
-
UIO
11h 28m
2 stops
Delta Logo
7:00 pm - 1:20 pm
UIO
-
STL
19h 20m
2 stops
$692Delta
Wed, Oct 28 - Wed, Nov 11
American Airlines Logo
6:02 am - 8:40 pm
STL
-
UIO
14h 38m
2 stops
American Airlines Logo
12:55 am - 3:50 pm
UIO
-
STL
15h 55m
1 stop
$732American Airlines
Sat, Oct 31 - Fri, Nov 6
American Airlines Logo
5:33 am - 8:40 pm
STL
-
UIO
15h 07m
1 stop
American Airlines Logo
8:27 am - 10:32 pm
UIO
-
STL
15h 05m
1 stop
$737American Airlines
Sat, Oct 31 - Sat, Nov 7
United Airlines Logo
6:14 am - 11:25 pm
STL
-
UIO
17h 11m
1 stop
United Airlines Logo
7:25 am - 5:42 pm
UIO
-
STL
10h 17m
1 stop
$747United Airlines
Sun, Jul 12 - Fri, Jul 17
Copa Airlines Logo
6:00 am - 5:29 pm
STL
-
GYE
35h 29m
2 stops
Copa Airlines Logo
12:21 pm - 11:35 pm
GYE
-
STL
35h 14m
2 stops
$920Copa Airlines
Sun, Jun 7 - Thu, Jun 11
Avianca Logo
6:24 pm - 10:50 am
STL
-
GPS
17h 26m
3 stops
Avianca Logo
1:05 pm - 5:42 pm
GPS
-
STL
27h 37m
2 stops
$1,806Avianca
Mon, Jun 1 - Mon, Jun 15
LATAM Airlines Logo
5:30 pm - 12:55 pm
STL
-
GPS
44h 25m
2 stops
LATAM Airlines Logo
11:12 am - 4:55 pm
GPS
-
STL
28h 43m
2 stops
$2,009LATAM Airlines
Fri, Sep 18 - Fri, Sep 25
LATAM Airlines Logo
6:00 am - 9:10 am
STL
-
GPS
28h 10m
3 stops
LATAM Airlines Logo
12:42 pm - 6:07 pm
GPS
-
STL
28h 25m
3 stops
$2,116LATAM Airlines
Mon, Jun 1 - Mon, Jun 15
Avianca Logo
2:57 pm - 10:30 am
STL
-
GPS
20h 33m
2 stops
Avianca Logo
1:05 pm - 10:07 am
GPS
-
STL
20h 02m
2 stops
$6,128Avianca
Mon, Jun 1 - Mon, Jun 15

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Oct 31
STL6:02 amLambert-St Louis
14h 38m
2 stops
UIO8:40 pmQuito Mariscal Sucr
Nov 6
UIO12:55 amQuito Mariscal Sucr
15h 55m
1 stop
STL3:50 pmLambert-St Louis
$732
American Airlines
Oct 31
STL5:33 amLambert-St Louis
15h 07m
1 stop
UIO8:40 pmQuito Mariscal Sucr
Nov 7
UIO8:27 amQuito Mariscal Sucr
15h 05m
1 stop
STL10:32 pmLambert-St Louis
$737
American Airlines
Jul 8
STL5:48 pmLambert-St Louis
19h 37m
2 stops
GYE1:25 pmGuayaquil Jose Joaquin de Olmedo
Jul 22
GYE6:00 amGuayaquil Jose Joaquin de Olmedo
16h 53m
1 stop
STL10:53 pmLambert-St Louis
$790

GOL flights from St. Louis to Ecuador

Our best GOL deals on St. Louis to Ecuador flight tickets
GOL
Jul 28
STL11:00 amLambert-St Louis
12h 58m
1 stop
UIO11:58 pmQuito Mariscal Sucr
Jul 31
UIO6:00 amQuito Mariscal Sucr
16h 53m
1 stop
STL10:53 pmLambert-St Louis
$1,014
GOL
Jul 28
STL11:00 amLambert-St Louis
12h 58m
1 stop
UIO11:58 pmQuito Mariscal Sucr
Aug 2
UIO6:00 amQuito Mariscal Sucr
16h 53m
1 stop
STL10:53 pmLambert-St Louis
$1,031
GOL
Jul 28
STL9:24 amLambert-St Louis
12h 48m
2 stops
UIO10:12 pmQuito Mariscal Sucr
Aug 1
UIO6:00 amQuito Mariscal Sucr
16h 53m
1 stop
STL10:53 pmLambert-St Louis
$1,042

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 11, 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. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 10/28

11:00 am-11:30 pm

1 stop12h 30m

Quito Mariscal Sucr

Tue 11/10

1:35 am-4:35 pm

1 stop16h 00m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 10/28

5:30 pm-4:58 am

2 stops11h 28m

Quito Mariscal Sucr

Wed 11/11

7:00 pm-1:20 pm

2 stops19h 20m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 10/31

6:02 am-8:40 pm

2 stops14h 38m

Quito Mariscal Sucr

Fri 11/6

12:55 am-3:50 pm

1 stop15h 55m

$732

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 10/31

5:33 am-8:40 pm

1 stop15h 07m

Quito Mariscal Sucr

Sat 11/7

8:27 am-10:32 pm

1 stop15h 05m

$737
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 7/12

6:14 am-11:25 pm

1 stop17h 11m

Quito Mariscal Sucr

Fri 7/17

7:25 am-5:42 pm

1 stop10h 17m

$747

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sun 6/7

6:00 am-5:29 pm

2 stops35h 29m

Guayaquil Jose Joaquin de Olmedo

Thu 6/11

12:21 pm-11:35 pm

2 stops35h 14m

$920

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Mon 6/1

6:24 pm-10:50 am

3 stops17h 26m

Baltra

Mon 6/15

1:05 pm-5:42 pm

2 stops27h 37m

$1,806

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Fri 9/18

5:30 pm-12:55 pm

2 stops44h 25m

Baltra

Fri 9/25

11:12 am-4:55 pm

2 stops28h 43m

$2,009

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Mon 6/1

6:00 am-9:10 am

3 stops28h 10m

Baltra

Mon 6/15

12:42 pm-6:07 pm

3 stops28h 25m

$2,116

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Mon 6/1

2:57 pm-10:30 am

2 stops20h 33m

Baltra

Mon 6/15

1:05 pm-10:07 am

2 stops20h 02m

$6,128

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 28m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 11h 28m
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
11,667 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,451 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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