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Cheap flights from St. Louis to Ecuador from $296

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 7/20. 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.
United Airlines Logo
3:13 pm - 11:25 pm
STL
-
UIO
8h 12m
1 stop
United Airlines Logo
7:25 am - 10:30 pm
UIO
-
STL
15h 05m
1 stop
$687United Airlines
Tue, Sep 1 - Mon, Sep 14
Delta Logo
6:05 am - 7:05 pm
STL
-
UIO
13h 00m
2 stops
Delta Logo
9:00 am - 11:37 pm
UIO
-
STL
14h 37m
2 stops
$692Delta
Thu, Aug 27 - Thu, Sep 10
Delta Logo
3:39 pm - 6:59 pm
STL
-
UIO
27h 20m
1 stop
Delta Logo
12:59 am - 2:38 pm
UIO
-
STL
13h 39m
1 stop
$696Delta
Sun, Aug 30 - Wed, Sep 9
Delta Logo
3:39 pm - 6:59 pm
STL
-
UIO
27h 20m
1 stop
Delta Logo
9:00 am - 11:37 pm
UIO
-
STL
14h 37m
2 stops
$700Delta
Sun, Aug 30 - Tue, Sep 15
United Airlines Logo
3:13 pm - 5:00 am
STL
-
UIO
13h 47m
1 stop
United Airlines Logo
12:35 am - 6:31 pm
UIO
-
STL
17h 56m
1 stop
$707United Airlines
Sat, Aug 29 - Mon, Sep 14
American Airlines Logo
5:33 am - 1:33 pm
STL
-
GYE
8h 00m
1 stop
American Airlines Logo
8:25 am - 11:15 pm
GYE
-
STL
14h 50m
1 stop
$798American Airlines
Thu, Oct 22 - Sun, Oct 25
American Airlines Logo
5:33 am - 1:33 pm
STL
-
GYE
8h 00m
1 stop
American Airlines Logo
8:25 am - 11:09 pm
GYE
-
STL
14h 44m
2 stops
$803American Airlines
Thu, Oct 22 - Sun, Oct 25
Multiple Airlines Logo
2:15 pm - 11:30 pm
STL
-
GYE
33h 15m
3 stops
Multiple Airlines Logo
10:05 am - 12:21 pm
GYE
-
STL
26h 16m
3 stops
$1,250Multiple Airlines
Mon, Jun 15 - Sat, Jun 20
Multiple Airlines Logo
2:15 pm - 8:55 am
STL
-
GYE
18h 40m
2 stops
Multiple Airlines Logo
3:30 am - 12:21 pm
GYE
-
STL
32h 51m
3 stops
$1,292Multiple Airlines
Mon, Jun 15 - Fri, Jun 19
LATAM Airlines Logo
6:00 am - 10:16 am
STL
-
GPS
29h 16m
3 stops
LATAM Airlines Logo
10:45 am - 9:44 am
GPS
-
STL
21h 59m
3 stops
$2,193LATAM Airlines
Tue, Jun 2 - Thu, Jun 4

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Sep 1
STL3:13 pmLambert-St Louis
8h 12m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Sep 14
UIO7:25 amQuito Mariscal Sucr
15h 05m
1 stop
STL10:30 pmLambert-St Louis
$687
United Airlines
Aug 29
STL3:13 pmLambert-St Louis
13h 47m
1 stop
UIO5:00 amQuito Mariscal Sucr
Sep 14
UIO12:35 amQuito Mariscal Sucr
17h 56m
1 stop
STL6:31 pmLambert-St Louis
$707
United Airlines
Aug 30
STL5:30 pmLambert-St Louis
29h 55m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Sep 14
UIO7:25 amQuito Mariscal Sucr
15h 05m
1 stop
STL10:30 pmLambert-St Louis
$709

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Aug 27
STL6:05 amLambert-St Louis
13h 00m
2 stops
UIO7:05 pmQuito Mariscal Sucr
Sep 10
UIO9:00 amQuito Mariscal Sucr
14h 37m
2 stops
STL11:37 pmLambert-St Louis
$692
Delta
Aug 30
STL3:39 pmLambert-St Louis
27h 20m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 9
UIO12:59 amQuito Mariscal Sucr
13h 39m
1 stop
STL2:38 pmLambert-St Louis
$696
Delta
Aug 30
STL3:39 pmLambert-St Louis
27h 20m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Sep 15
UIO9:00 amQuito Mariscal Sucr
14h 37m
2 stops
STL11:37 pmLambert-St Louis
$700

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 18, 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

Tue 9/1

3:13 pm-11:25 pm

1 stop8h 12m

Quito Mariscal Sucr

Mon 9/14

7:25 am-10:30 pm

1 stop15h 05m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 8/27

6:05 am-7:05 pm

2 stops13h 00m

Quito Mariscal Sucr

Thu 9/10

9:00 am-11:37 pm

2 stops14h 37m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 8/30

3:39 pm-6:59 pm

1 stop27h 20m

Quito Mariscal Sucr

Wed 9/9

12:59 am-2:38 pm

1 stop13h 39m

$696

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 8/30

3:39 pm-6:59 pm

1 stop27h 20m

Quito Mariscal Sucr

Tue 9/15

9:00 am-11:37 pm

2 stops14h 37m

$700

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 8/29

3:13 pm-5:00 am

1 stop13h 47m

Quito Mariscal Sucr

Mon 9/14

12:35 am-6:31 pm

1 stop17h 56m

$707

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

5:33 am-1:33 pm

1 stop8h 00m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

8:25 am-11:15 pm

1 stop14h 50m

$798
Quickest round-trip

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 10/22

5:33 am-1:33 pm

1 stop8h 00m

Guayaquil Jose Joaquin de Olmedo

Sun 10/25

8:25 am-11:09 pm

2 stops14h 44m

$803

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 6/15

2:15 pm-11:30 pm

3 stops33h 15m

Guayaquil Jose Joaquin de Olmedo

Sat 6/20

10:05 am-12:21 pm

3 stops26h 16m

$1,250

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 6/15

2:15 pm-8:55 am

2 stops18h 40m

Guayaquil Jose Joaquin de Olmedo

Fri 6/19

3:30 am-12:21 pm

3 stops32h 51m

$1,292

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Tue 6/2

6:00 am-10:16 am

3 stops29h 16m

Baltra

Thu 6/4

10:45 am-9:44 am

3 stops21h 59m

$2,193

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

14h 05m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 14h 05m
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
11,648 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,447 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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