What is the cheapest airline that flies from Lambert-St Louis to Ecuador?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Ecuador

What airlines fly to Ecuador?

Delta, American Airlines and LATAM Airlines are the top three most popular airlines that fly to Ecuador from St. Louis according to our data. Delta is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Ecuador. Keep in mind that there are 4 different airlines that fly to Ecuador on a routine basis, so you have a few additional options to choose from.

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?

As of December 2025, there are 4 operators available to choose from 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.

$206 Cheap Flights from St. Louis to Ecuador in 2025/26

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Find the cheapest flights from St. Louis to Ecuador

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 11:25 pm

STL

UIO

17h 25m1 stop

12:35 am - 9:28 am

UIO

STL

8h 53m1 stop

$625United Airlines

Sat, Apr 25 - Mon, May 4

10:00 am - 11:25 pm

STL

UIO

13h 25m2 stops

12:35 am - 4:26 pm

UIO

STL

15h 51m2 stops

$629United Airlines

Sat, Apr 25 - Mon, May 4

6:45 am - 4:58 am

STL

UIO

22h 13m2 stops

11:20 pm - 12:54 pm

UIO

STL

13h 34m1 stop

$639Delta

Fri, May 22 - Fri, May 29

6:15 am - 5:00 am

STL

UIO

22h 45m1 stop

12:35 am - 9:42 am

UIO

STL

9h 07m1 stop

$644United Airlines

Fri, May 22 - Thu, May 28

7:10 am - 8:35 pm

STL

UIO

13h 25m1 stop

7:00 pm - 11:42 pm

UIO

STL

28h 42m2 stops

$662LATAM Airlines

Mon, Mar 23 - Sun, Apr 5

10:02 am - 8:35 pm

STL

UIO

10h 33m1 stop

7:00 pm - 5:53 pm

UIO

STL

22h 53m2 stops

$664LATAM Airlines

Sun, Mar 22 - Sat, Apr 4

6:15 am - 5:00 am

STL

UIO

22h 45m1 stop

7:25 am - 10:27 am

UIO

STL

27h 02m2 stops

$665United Airlines

Fri, May 22 - Fri, May 29

6:00 am - 11:47 pm

STL

UIO

16h 47m2 stops

12:45 am - 10:26 am

UIO

STL

10h 41m1 stop

$676American Airlines

Sun, Feb 1 - Sat, Feb 21

6:53 pm - 1:30 pm

STL

GYE

18h 37m2 stops

2:33 pm - 9:16 am

GYE

STL

18h 43m1 stop

$748American Airlines

Sat, Mar 14 - Sat, Apr 11

11:51 am - 11:53 pm

STL

GYE

11h 02m1 stop

6:50 pm - 6:51 am

GYE

STL

37h 01m2 stops

$790Multiple Airlines

Tue, Dec 30 - Mon, Jan 12

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets

United Airlines

Apr 25

STL6:00 amLambert-St Louis

17h 25m

1 stop

UIO11:25 pmQuito Mariscal Sucr

May 4

UIO12:35 amQuito Mariscal Sucr

8h 53m

1 stop

STL9:28 amLambert-St Louis

$625

Find similar

United Airlines

Apr 25

STL10:00 amLambert-St Louis

13h 25m

2 stops

UIO11:25 pmQuito Mariscal Sucr

May 4

UIO12:35 amQuito Mariscal Sucr

15h 51m

2 stops

STL4:26 pmLambert-St Louis

$629

Find similar

United Airlines

Jan 31

STL4:49 pmLambert-St Louis

30h 41m

2 stops

UIO12:30 amQuito Mariscal Sucr

Feb 3

UIO1:35 amQuito Mariscal Sucr

22h 23m

2 stops

STL10:58 pmLambert-St Louis

$703

Find similar

American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets

American Airlines

Feb 1

STL6:00 amLambert-St Louis

16h 47m

2 stops

UIO11:47 pmQuito Mariscal Sucr

Feb 21

UIO12:45 amQuito Mariscal Sucr

12h 44m

2 stops

STL12:29 pmLambert-St Louis

$709

Find similar

American Airlines

May 21

STL5:25 amLambert-St Louis

17h 20m

1 stop

UIO10:45 pmQuito Mariscal Sucr

May 25

UIO11:40 pmQuito Mariscal Sucr

24h 19m

1 stop

STL11:59 pmLambert-St Louis

$742

Find similar

American Airlines

Mar 14

STL6:53 pmLambert-St Louis

18h 37m

2 stops

GYE1:30 pmGuayaquil Jose Joaquin de Olmedo

Apr 11

GYE2:33 pmGuayaquil Jose Joaquin de Olmedo

18h 43m

1 stop

STL9:16 amLambert-St Louis

$748

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 4/25

6:00 am-11:25 pm

1 stop17h 25m

Quito Mariscal Sucr

Mon 5/4

12:35 am-9:28 am

1 stop8h 53m

$625

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 4/25

10:00 am-11:25 pm

2 stops13h 25m

Quito Mariscal Sucr

Mon 5/4

12:35 am-4:26 pm

2 stops15h 51m

$629

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 5/22

6:45 am-4:58 am

2 stops22h 13m

Quito Mariscal Sucr

Fri 5/29

11:20 pm-12:54 pm

1 stop13h 34m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 5/22

6:15 am-5:00 am

1 stop22h 45m

Quito Mariscal Sucr

Thu 5/28

12:35 am-9:42 am

1 stop9h 07m

$644

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 3/23

7:10 am-8:35 pm

1 stop13h 25m

Quito Mariscal Sucr

Sun 4/5

7:00 pm-11:42 pm

2 stops28h 42m

$662

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/22

10:02 am-8:35 pm

1 stop10h 33m

Quito Mariscal Sucr

Sat 4/4

7:00 pm-5:53 pm

2 stops22h 53m

$664

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 5/22

6:15 am-5:00 am

1 stop22h 45m

Quito Mariscal Sucr

Fri 5/29

7:25 am-10:27 am

2 stops27h 02m

$665

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

6:00 am-11:47 pm

2 stops16h 47m

Quito Mariscal Sucr

Sat 2/21

12:45 am-10:26 am

1 stop10h 41m

$676

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sat 3/14

6:53 pm-1:30 pm

2 stops18h 37m

Guayaquil Jose Joaquin de Olmedo

Sat 4/11

2:33 pm-9:16 am

1 stop18h 43m

$748

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 12/30

11:51 am-11:53 pm

1 stop11h 02m

Guayaquil Jose Joaquin de Olmedo

Mon 1/12

6:50 pm-6:51 am

2 stops37h 01m

$790

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest day to depart on your flight to Ecuador?

The cheapest day to depart from St. Louis to Ecuador is on a Tuesday. Travelers who choose to depart for Ecuador on a Tuesday will often find tickets for as low as $549. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $862. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ecuador.

What is the cheapest time of day to depart on your flight to Ecuador?

Flying to Ecuador from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $656 when looking at flights departing in the afternoon. Flights to Ecuador are more costly in the morning, with an average ticket price of $689. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You could potentially save up to 6% 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	8h 18m
Direct flights	None

The fastest flight from St. Louis to Ecuador takes 8h 18m

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?
As of December 2025, there are 4 operators available to choose from 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 Airlines	PriceFrom $516	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights
United Airlines	PriceFrom $634	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Delta	PriceFrom $661	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
LATAM Airlines	PriceFrom $664	Free Cancellation	Rating 7.5 1,891 reviews	Search LATAM Airlines 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.