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Cheap flights from St. Louis to Ecuador from $333

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 6/22. 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.
Delta Logo
11:51 am - 9:25 pm
STL
-
UIO
8h 34m
1 stop
Delta Logo
12:55 am - 12:56 pm
UIO
-
STL
13h 01m
1 stop
$737Delta
Sat, Nov 7 - Fri, Nov 13
American Airlines Logo
9:47 am - 11:02 pm
STL
-
UIO
12h 15m
2 stops
American Airlines Logo
12:55 am - 1:47 pm
UIO
-
STL
13h 52m
2 stops
$742American Airlines
Sat, Nov 7 - Fri, Nov 13
LATAM Airlines Logo
11:51 am - 9:25 pm
STL
-
UIO
8h 34m
1 stop
LATAM Airlines Logo
12:55 am - 6:01 pm
UIO
-
STL
18h 06m
1 stop
$757LATAM Airlines
Sat, Nov 7 - Fri, Nov 13
American Airlines Logo
5:21 am - 11:02 pm
STL
-
UIO
16h 41m
1 stop
American Airlines Logo
8:27 am - 10:32 pm
UIO
-
STL
15h 05m
1 stop
$772American Airlines
Sat, Nov 7 - Sat, Nov 14
United Airlines Logo
6:15 am - 11:30 pm
STL
-
UIO
17h 15m
1 stop
United Airlines Logo
12:35 am - 4:35 pm
UIO
-
STL
16h 00m
1 stop
$798United Airlines
Tue, Oct 27 - Thu, Oct 29
American Airlines Logo
5:33 am - 1:33 pm
STL
-
GYE
8h 00m
1 stop
American Airlines Logo
8:25 am - 5:23 pm
GYE
-
STL
8h 58m
1 stop
$798American Airlines
Thu, Oct 22 - Sun, Oct 25
United Airlines Logo
8:00 am - 11:30 pm
STL
-
UIO
15h 30m
2 stops
United Airlines Logo
12:35 am - 2:18 pm
UIO
-
STL
13h 43m
2 stops
$803United Airlines
Tue, Oct 27 - Thu, Oct 29
United Airlines Logo
8:50 am - 11:30 pm
STL
-
UIO
14h 40m
1 stop
United Airlines Logo
12:35 am - 9:42 am
UIO
-
STL
9h 07m
1 stop
$808United Airlines
Tue, Oct 27 - Thu, Oct 29
Copa Airlines Logo
6:14 am - 8:53 pm
STL
-
GYE
14h 39m
2 stops
Copa Airlines Logo
4:12 am - 5:42 pm
GYE
-
STL
13h 30m
2 stops
$823Copa Airlines
Mon, Jul 13 - Thu, Jul 23
LATAM Airlines Logo
5:23 pm - 2:25 pm
STL
-
SCY
46h 02m
3 stops
LATAM Airlines Logo
1:14 pm - 11:37 pm
SCY
-
STL
33h 23m
3 stops
$3,254LATAM Airlines
Fri, Sep 4 - Sat, Sep 12

Avianca flights from St. Louis to Ecuador

Our best Avianca deals on St. Louis to Ecuador flight tickets
Avianca
Oct 27
STL8:25 amLambert-St Louis
35h 40m
3 stops
UIO8:05 pmQuito Mariscal Sucr
Oct 29
UIO3:30 amQuito Mariscal Sucr
30h 18m
2 stops
STL9:48 amLambert-St Louis
$1,360
Avianca
Oct 27
STL8:25 amLambert-St Louis
35h 40m
3 stops
UIO8:05 pmQuito Mariscal Sucr
Oct 29
UIO3:30 amQuito Mariscal Sucr
30h 18m
2 stops
STL9:48 amLambert-St Louis
$1,548

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Oct 27
STL6:15 amLambert-St Louis
17h 15m
1 stop
UIO11:30 pmQuito Mariscal Sucr
Oct 29
UIO12:35 amQuito Mariscal Sucr
16h 00m
1 stop
STL4:35 pmLambert-St Louis
$798
United Airlines
Oct 27
STL8:00 amLambert-St Louis
15h 30m
2 stops
UIO11:30 pmQuito Mariscal Sucr
Oct 29
UIO12:35 amQuito Mariscal Sucr
13h 43m
2 stops
STL2:18 pmLambert-St Louis
$803
United Airlines
Oct 27
STL8:50 amLambert-St Louis
14h 40m
1 stop
UIO11:30 pmQuito Mariscal Sucr
Oct 29
UIO12:35 amQuito Mariscal Sucr
9h 07m
1 stop
STL9:42 amLambert-St Louis
$808

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 31, 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

Sat 11/7

11:51 am-9:25 pm

1 stop8h 34m

Quito Mariscal Sucr

Fri 11/13

12:55 am-12:56 pm

1 stop13h 01m

$737

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/7

9:47 am-11:02 pm

2 stops12h 15m

Quito Mariscal Sucr

Fri 11/13

12:55 am-1:47 pm

2 stops13h 52m

$742

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

$757

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/7

5:21 am-11:02 pm

1 stop16h 41m

Quito Mariscal Sucr

Sat 11/14

8:27 am-10:32 pm

1 stop15h 05m

$772

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 10/27

6:15 am-11:30 pm

1 stop17h 15m

Quito Mariscal Sucr

Thu 10/29

12:35 am-4:35 pm

1 stop16h 00m

$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-5:23 pm

1 stop8h 58m

$798

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 10/27

8:00 am-11:30 pm

2 stops15h 30m

Quito Mariscal Sucr

Thu 10/29

12:35 am-2:18 pm

2 stops13h 43m

$803

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 10/27

8:50 am-11:30 pm

1 stop14h 40m

Quito Mariscal Sucr

Thu 10/29

12:35 am-9:42 am

1 stop9h 07m

$808

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Mon 7/13

6:14 am-8:53 pm

2 stops14h 39m

Guayaquil Jose Joaquin de Olmedo

Thu 7/23

4:12 am-5:42 pm

2 stops13h 30m

$823

St. LouisSan Cristobal

STL - SCY

STLSCY

Lambert-St Louis

Fri 9/4

5:23 pm-2:25 pm

3 stops46h 02m

San Cristobal

Sat 9/12

1:14 pm-11:37 pm

3 stops33h 23m

$3,254

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

11h 17m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 11h 17m
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
11,640 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,416 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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