Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Ecuador from $120

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 2/2. 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.
Delta Logo
9:59 am - 5:17 am
STL
-
UIO
18h 18m2 stops
Delta Logo
7:00 pm - 2:49 pm
UIO
-
STL
20h 49m2 stops
$639Delta
Fri, Jan 23 - Sun, Feb 1
Delta Logo
7:10 am - 9:35 pm
STL
-
UIO
13h 25m1 stop
Delta Logo
11:45 pm - 11:37 pm
UIO
-
STL
24h 52m1 stop
$640Delta
Fri, Jan 23 - Sun, Feb 1
American Airlines Logo
8:13 am - 11:47 pm
STL
-
UIO
14h 34m2 stops
American Airlines Logo
12:45 am - 12:29 pm
UIO
-
STL
12h 44m2 stops
$676American Airlines
Sun, Feb 1 - Sat, Feb 21
United Airlines Logo
4:49 pm - 12:30 am
STL
-
UIO
30h 41m2 stops
United Airlines Logo
1:35 am - 3:52 pm
UIO
-
STL
15h 17m1 stop
$703United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
4:42 pm - 12:30 am
STL
-
UIO
30h 48m1 stop
United Airlines Logo
1:35 am - 3:52 pm
UIO
-
STL
15h 17m1 stop
$708United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
4:35 pm - 8:46 pm
STL
-
GYE
51h 11m2 stops
United Airlines Logo
2:35 pm - 10:00 pm
GYE
-
STL
56h 25m2 stops
$737United Airlines
Sun, Jan 18 - Thu, Jan 22
American Airlines Logo
6:00 am - 8:16 pm
STL
-
UIO
13h 16m2 stops
American Airlines Logo
12:45 am - 12:29 pm
UIO
-
STL
12h 44m2 stops
$750American Airlines
Sun, Feb 1 - Sat, Feb 21
United Airlines Logo
6:00 am - 12:30 am
STL
-
UIO
17h 30m1 stop
United Airlines Logo
1:35 am - 9:23 am
UIO
-
STL
8h 48m1 stop
$752United Airlines
Sun, Feb 1 - Sat, Feb 21
LATAM Airlines Logo
3:45 pm - 5:17 am
STL
-
UIO
12h 32m2 stops
LATAM Airlines Logo
11:45 pm - 8:53 am
UIO
-
STL
10h 08m1 stop
$760LATAM Airlines
Fri, Jan 16 - Mon, Jan 19
LATAM Airlines Logo
12:00 pm - 9:35 pm
STL
-
UIO
8h 35m1 stop
LATAM Airlines Logo
11:45 pm - 8:53 am
UIO
-
STL
10h 08m1 stop
$776LATAM Airlines
Fri, Jan 16 - Mon, Jan 19

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Feb 1
STL6:00 amLambert-St Louis
14h 35m
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
LATAM Airlines
Jan 16
STL3:45 pmLambert-St Louis
12h 32m
2 stops
UIO5:17 amQuito Mariscal Sucr
Jan 19
UIO11:45 pmQuito Mariscal Sucr
10h 08m
1 stop
STL8:53 amLambert-St Louis
$760
Find similar
LATAM Airlines
Jan 16
STL12:00 pmLambert-St Louis
8h 35m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Jan 19
UIO11:45 pmQuito Mariscal Sucr
10h 08m
1 stop
STL8:53 amLambert-St Louis
$776
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 31
STL4:49 pmLambert-St Louis
30h 41m
2 stops
UIO12:30 amQuito Mariscal Sucr
Feb 3
UIO1:35 amQuito Mariscal Sucr
20h 38m
2 stops
STL9:13 pmLambert-St Louis
$703
Find similar
United Airlines
Jan 31
STL4:42 pmLambert-St Louis
30h 48m
1 stop
UIO12:30 amQuito Mariscal Sucr
Feb 3
UIO1:35 amQuito Mariscal Sucr
15h 17m
1 stop
STL3:52 pmLambert-St Louis
$708
Find similar
United Airlines
Jan 18
STL4:35 pmLambert-St Louis
30h 07m
2 stops
GYE11:42 pmGuayaquil Jose Joaquin de Olmedo
Jan 22
GYE2:35 pmGuayaquil Jose Joaquin de Olmedo
50h 04m
2 stops
STL3:39 pmLambert-St Louis
$737
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 December 9, 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. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 1/23

9:59 am-5:17 am

2 stops18h 18m

Quito Mariscal Sucr

Sun 2/1

7:00 pm-2:49 pm

2 stops20h 49m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 1/23

7:10 am-9:35 pm

1 stop13h 25m

Quito Mariscal Sucr

Sun 2/1

11:45 pm-11:37 pm

1 stop24h 52m

$640

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

8:13 am-11:47 pm

2 stops14h 34m

Quito Mariscal Sucr

Sat 2/21

12:45 am-12:29 pm

2 stops12h 44m

$676

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 1/31

4:49 pm-12:30 am

2 stops30h 41m

Quito Mariscal Sucr

Tue 2/3

1:35 am-3:52 pm

1 stop15h 17m

$703

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 1/31

4:42 pm-12:30 am

1 stop30h 48m

Quito Mariscal Sucr

Tue 2/3

1:35 am-3:52 pm

1 stop15h 17m

$708

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sun 1/18

4:35 pm-8:46 pm

2 stops51h 11m

Guayaquil Jose Joaquin de Olmedo

Thu 1/22

2:35 pm-10:00 pm

2 stops56h 25m

$737

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

6:00 am-8:16 pm

2 stops13h 16m

Quito Mariscal Sucr

Sat 2/21

12:45 am-12:29 pm

2 stops12h 44m

$750

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

6:00 am-12:30 am

1 stop17h 30m

Quito Mariscal Sucr

Sat 2/21

1:35 am-9:23 am

1 stop8h 48m

$752

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 1/16

3:45 pm-5:17 am

2 stops12h 32m

Quito Mariscal Sucr

Mon 1/19

11:45 pm-8:53 am

1 stop10h 08m

$760

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 1/16

12:00 pm-9:35 pm

1 stop8h 35m

Quito Mariscal Sucr

Mon 1/19

11:45 pm-8:53 am

1 stop10h 08m

$776

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 35m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 8h 35m
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
11,043 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,088 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,009 reviews
Search Delta flights
LATAM AirlinesPriceFrom $664Free CancellationRating
7.5
1,889 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 1/8
Thu 1/15
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 $301
Flights to Guayaquilfrom $197
Flights to Baltrafrom $400
Flights to Cuencafrom $366
Flights to San Cristobalfrom $460
Flights to Mantafrom $425
Flights to Lojafrom $754
Flights to Esmeraldas