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Cheap flights from St. Louis to Ecuador from $235

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 4/27. 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.
American Airlines Logo
11:06 am - 10:24 pm
STL
-
UIO
11h 18m
1 stop
American Airlines Logo
6:00 am - 10:58 pm
UIO
-
STL
16h 58m
1 stop
$687American Airlines
Wed, May 13 - Thu, May 21
American Airlines Logo
7:00 am - 7:57 pm
STL
-
UIO
12h 57m
2 stops
American Airlines Logo
6:00 am - 8:30 pm
UIO
-
STL
14h 30m
2 stops
$692American Airlines
Wed, May 13 - Thu, May 21
Delta Logo
1:02 pm - 4:43 am
STL
-
UIO
15h 41m
2 stops
Delta Logo
6:50 pm - 3:32 pm
UIO
-
STL
20h 42m
2 stops
$702Delta
Sun, Apr 26 - Sun, May 3
Delta Logo
6:50 pm - 6:59 pm
STL
-
UIO
24h 09m
1 stop
Delta Logo
12:59 am - 3:32 pm
UIO
-
STL
14h 33m
1 stop
$703Delta
Sun, Apr 26 - Sat, May 2
Delta Logo
9:59 am - 6:59 pm
STL
-
UIO
9h 00m
1 stop
Delta Logo
12:59 am - 3:32 pm
UIO
-
STL
14h 33m
1 stop
$707Delta
Fri, Apr 24 - Thu, Apr 30
United Airlines Logo
11:10 am - 11:25 pm
STL
-
UIO
12h 15m
1 stop
United Airlines Logo
7:25 am - 8:41 am
UIO
-
STL
25h 16m
2 stops
$716United Airlines
Thu, Jun 18 - Mon, Jul 27
Air Canada Logo
6:00 am - 8:54 pm
STL
-
GYE
14h 54m
2 stops
Air Canada Logo
8:28 am - 9:25 am
GYE
-
STL
24h 57m
2 stops
$753Air Canada
Thu, Apr 9 - Mon, Apr 20
United Airlines Logo
6:00 am - 8:52 pm
STL
-
GYE
14h 52m
2 stops
United Airlines Logo
12:22 pm - 9:30 am
GYE
-
STL
21h 08m
2 stops
$840United Airlines
Sun, May 10 - Thu, May 14
LATAM Airlines Logo
6:50 pm - 10:10 am
STL
-
GPS
40h 20m
2 stops
LATAM Airlines Logo
1:35 pm - 10:34 am
GPS
-
STL
19h 59m
2 stops
$1,707LATAM Airlines
Sun, Apr 26 - Sun, May 3
LATAM Airlines Logo
6:00 am - 10:16 am
STL
-
GPS
29h 16m
3 stops
LATAM Airlines Logo
9:50 am - 10:34 am
GPS
-
STL
23h 44m
3 stops
$1,749LATAM Airlines
Tue, Apr 28 - Tue, May 5

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
May 13
STL11:06 amLambert-St Louis
11h 18m
1 stop
UIO10:24 pmQuito Mariscal Sucr
May 21
UIO6:00 amQuito Mariscal Sucr
16h 58m
1 stop
STL10:58 pmLambert-St Louis
$687
American Airlines
May 13
STL7:00 amLambert-St Louis
12h 57m
2 stops
UIO7:57 pmQuito Mariscal Sucr
May 21
UIO6:00 amQuito Mariscal Sucr
14h 30m
2 stops
STL8:30 pmLambert-St Louis
$692
American Airlines
May 14
STL5:24 amLambert-St Louis
17h 00m
1 stop
UIO10:24 pmQuito Mariscal Sucr
Aug 21
UIO6:09 amQuito Mariscal Sucr
17h 50m
1 stop
STL11:59 pmLambert-St Louis
$720

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Apr 27
STL1:02 pmLambert-St Louis
15h 41m
2 stops
UIO4:43 amQuito Mariscal Sucr
Apr 30
UIO6:50 pmQuito Mariscal Sucr
22h 54m
2 stops
STL5:44 pmLambert-St Louis
$773
LATAM Airlines
Jun 24
STL11:51 amLambert-St Louis
16h 52m
2 stops
UIO4:43 amQuito Mariscal Sucr
Jul 27
UIO6:50 pmQuito Mariscal Sucr
15h 55m
2 stops
STL10:45 amLambert-St Louis
$785
LATAM Airlines
Jun 24
STL11:51 amLambert-St Louis
16h 52m
2 stops
UIO4:43 amQuito Mariscal Sucr
Jul 27
UIO6:50 pmQuito Mariscal Sucr
15h 55m
2 stops
STL10:45 amLambert-St Louis
$788

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 March 14, 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 5/13

11:06 am-10:24 pm

1 stop11h 18m

Quito Mariscal Sucr

Thu 5/21

6:00 am-10:58 pm

1 stop16h 58m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 5/13

7:00 am-7:57 pm

2 stops12h 57m

Quito Mariscal Sucr

Thu 5/21

6:00 am-8:30 pm

2 stops14h 30m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 4/26

1:02 pm-4:43 am

2 stops15h 41m

Quito Mariscal Sucr

Sun 5/3

6:50 pm-3:32 pm

2 stops20h 42m

$702

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 4/26

6:50 pm-6:59 pm

1 stop24h 09m

Quito Mariscal Sucr

Sat 5/2

12:59 am-3:32 pm

1 stop14h 33m

$703
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 4/24

9:59 am-6:59 pm

1 stop9h 00m

Quito Mariscal Sucr

Thu 4/30

12:59 am-3:32 pm

1 stop14h 33m

$707

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 6/18

11:10 am-11:25 pm

1 stop12h 15m

Quito Mariscal Sucr

Mon 7/27

7:25 am-8:41 am

2 stops25h 16m

$716

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 4/9

6:00 am-8:54 pm

2 stops14h 54m

Guayaquil Jose Joaquin de Olmedo

Mon 4/20

8:28 am-9:25 am

2 stops24h 57m

$753

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sun 5/10

6:00 am-8:52 pm

2 stops14h 52m

Guayaquil Jose Joaquin de Olmedo

Thu 5/14

12:22 pm-9:30 am

2 stops21h 08m

$840

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Sun 4/26

6:50 pm-10:10 am

2 stops40h 20m

Baltra

Sun 5/3

1:35 pm-10:34 am

2 stops19h 59m

$1,707

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Tue 4/28

6:00 am-10:16 am

3 stops29h 16m

Baltra

Tue 5/5

9:50 am-10:34 am

3 stops23h 44m

$1,749

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

Can stopping save me money on St. Louis to Ecuador flights?

You could potentially save up to 21% 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

15h 16m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 15h 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

  • 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
11,464 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,422 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $655Free CancellationRating
7.4
1,918 reviews
Search LATAM Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,291 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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