Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Ecuador from $379

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 4/26. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Ecuador

Cheap round-trip flights

Enter your travel dates to find the best prices.
Spirit Airlines Logo
11:51 am - 11:53 pmSTL-GYE
11h 02m1 stop
Spirit Airlines Logo
12:49 am - 10:56 amGYE-STL
11h 07m1 stop
$582Spirit Airlines
Find Deal
Tue, Dec 23 - Mon, Dec 29
Delta Logo
6:00 am - 9:35 pmSTL-UIO
14h 35m1 stop
Delta Logo
11:45 pm - 8:53 amUIO-STL
10h 08m1 stop
$607Delta
Find Deal
Mon, Jan 12 - Mon, Jan 19
United Airlines Logo
10:07 am - 12:30 amSTL-UIO
13h 23m1 stop
United Airlines Logo
1:35 am - 3:52 pmUIO-STL
15h 17m1 stop
$615United Airlines
Find Deal
Tue, Jan 20 - Mon, Jan 26
Multiple Airlines Logo
4:27 pm - 11:35 pmSTL-GYE
30h 08m2 stops
Multiple Airlines Logo
12:49 am - 10:56 amGYE-STL
11h 07m1 stop
$616Multiple Airlines
Find Deal
Tue, Dec 23 - Mon, Dec 29
Multiple Airlines Logo
9:57 am - 5:17 amSTL-UIO
18h 20m3 stops
Multiple Airlines Logo
7:00 pm - 11:54 amUIO-STL
17h 54m2 stops
$619Multiple Airlines
Find Deal
Tue, Jan 20 - Tue, Jan 27
United Airlines Logo
10:09 am - 11:25 pmSTL-UIO
13h 16m1 stop
United Airlines Logo
12:35 am - 9:42 amUIO-STL
9h 07m1 stop
$625United Airlines
Find Deal
Sat, Apr 18 - Wed, Apr 29
LATAM Airlines Logo
1:30 pm - 8:09 pmSTL-UIO
30h 39m1 stop
LATAM Airlines Logo
11:20 pm - 6:02 pmUIO-STL
18h 42m1 stop
$653LATAM Airlines
Find Deal
Sat, Apr 18 - Thu, Apr 30
LATAM Airlines Logo
1:30 pm - 4:58 amSTL-UIO
15h 28m2 stops
LATAM Airlines Logo
11:20 pm - 10:45 amUIO-STL
11h 25m1 stop
$664LATAM Airlines
Find Deal
Sat, Apr 18 - Thu, Apr 30
American Airlines Logo
10:00 am - 11:22 pmSTL-GYE
12h 22m1 stop
American Airlines Logo
7:15 am - 5:22 pmGYE-STL
11h 07m1 stop
$865American Airlines
Find Deal
Sat, Jan 24 - Wed, Jan 28
American Airlines Logo
7:00 am - 11:22 pmSTL-GYE
15h 22m2 stops
American Airlines Logo
7:15 am - 5:22 pmGYE-STL
11h 07m1 stop
$870American Airlines
Find Deal
Sat, Jan 24 - Wed, Jan 28

Delta flights from St. Louis to Ecuador

Our best Delta deals on St. Louis to Ecuador flight tickets
Delta
Jan 12
STL6:00 amLambert-St Louis
14h 35m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Jan 19
UIO11:45 pmQuito Mariscal Sucr
10h 08m
1 stop
STL8:53 amLambert-St Louis
$607
Find similar
Delta
Feb 1
STL6:00 amLambert-St Louis
22h 17m
2 stops
UIO5:17 amQuito Mariscal Sucr
Feb 22
UIO7:00 pmQuito Mariscal Sucr
23h 42m
2 stops
STL5:42 pmLambert-St Louis
$629
Find similar
Delta
Feb 1
STL9:59 amLambert-St Louis
10h 36m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Feb 22
UIO7:00 pmQuito Mariscal Sucr
23h 42m
2 stops
STL5:42 pmLambert-St Louis
$639
Find similar

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Jan 20
STL10:07 amLambert-St Louis
13h 23m
1 stop
UIO12:30 amQuito Mariscal Sucr
Jan 26
UIO1:35 amQuito Mariscal Sucr
15h 17m
1 stop
STL3:52 pmLambert-St Louis
$615
Find similar
United Airlines
Apr 18
STL10:09 amLambert-St Louis
13h 16m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Apr 29
UIO12:35 amQuito Mariscal Sucr
9h 07m
1 stop
STL9:42 amLambert-St Louis
$625
Find similar
United Airlines
Apr 18
STL7:45 amLambert-St Louis
15h 40m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Apr 29
UIO12:35 amQuito Mariscal Sucr
14h 46m
2 stops
STL3:21 pmLambert-St Louis
$648
Find similar

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 November 25, 2025.
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

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 12/23

11:51 am-11:53 pm

1 stop11h 02m

Guayaquil Jose Joaquin de Olmedo

Mon 12/29

12:49 am-10:56 am

1 stop11h 07m

$582

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 1/12

6:00 am-9:35 pm

1 stop14h 35m

Quito Mariscal Sucr

Mon 1/19

11:45 pm-8:53 am

1 stop10h 08m

$607

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 1/20

10:07 am-12:30 am

1 stop13h 23m

Quito Mariscal Sucr

Mon 1/26

1:35 am-3:52 pm

1 stop15h 17m

$615

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Tue 12/23

4:27 pm-11:35 pm

2 stops30h 08m

Guayaquil Jose Joaquin de Olmedo

Mon 12/29

12:49 am-10:56 am

1 stop11h 07m

$616

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 1/20

9:57 am-5:17 am

3 stops18h 20m

Quito Mariscal Sucr

Tue 1/27

7:00 pm-11:54 am

2 stops17h 54m

$619

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 4/18

10:09 am-11:25 pm

1 stop13h 16m

Quito Mariscal Sucr

Wed 4/29

12:35 am-9:42 am

1 stop9h 07m

$625

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 4/18

1:30 pm-8:09 pm

1 stop30h 39m

Quito Mariscal Sucr

Thu 4/30

11:20 pm-6:02 pm

1 stop18h 42m

$653

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 4/18

1:30 pm-4:58 am

2 stops15h 28m

Quito Mariscal Sucr

Thu 4/30

11:20 pm-10:45 am

1 stop11h 25m

$664

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sat 1/24

10:00 am-11:22 pm

1 stop12h 22m

Guayaquil Jose Joaquin de Olmedo

Wed 1/28

7:15 am-5:22 pm

1 stop11h 07m

$865

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sat 1/24

7:00 am-11:22 pm

2 stops15h 22m

Guayaquil Jose Joaquin de Olmedo

Wed 1/28

7:15 am-5:22 pm

1 stop11h 07m

$870

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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?

  • 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
7.2
11,039 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,043 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
7,998 reviews
Search Delta flights
LATAM AirlinesPriceFrom $664Free CancellationRating
7.5
1,887 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.

An easier way to manage your Ecuador trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 12/25
Thu 1/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ecuador

Popular cities in Ecuador

Popular flights according to clicks in the last 7 days on momondo
Flights to Quitofrom $324
Flights to Guayaquilfrom $212
Flights to Baltrafrom $331
Flights to Cuencafrom $336
Flights to San Cristobalfrom $462
Flights to Mantafrom $342
Flights to Lojafrom $747
Flights to Esmeraldas