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Cheap flights from St. Louis to Ecuador from $180

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 2/7. 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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Find the cheapest flights from St. Louis to Ecuador

Cheap round-trip flights

United Airlines Logo
6:15 am - 11:18 amSTL-GYE
28h 03m2 stops
United Airlines Logo
8:34 am - 4:35 pmGYE-STL
33h 01m2 stops
$605United Airlines
Find Deal
Thu, Dec 4 - Fri, Feb 20
Delta Logo
7:05 am - 6:59 pmSTL-UIO
11h 54m1 stop
Delta Logo
12:55 am - 2:43 pmUIO-STL
13h 48m1 stop
$614Delta
Find Deal
Thu, Oct 23 - Wed, Oct 29
United Airlines Logo
5:00 am - 11:25 pmSTL-UIO
18h 25m2 stops
United Airlines Logo
12:35 am - 10:39 amUIO-STL
10h 04m1 stop
$619United Airlines
Find Deal
Thu, Oct 23 - Wed, Oct 29
American Airlines Logo
9:43 am - 8:52 pmSTL-UIO
11h 09m2 stops
American Airlines Logo
8:27 am - 10:27 pmUIO-STL
15h 00m1 stop
$629American Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 12
LATAM Airlines Logo
10:30 am - 6:59 pmSTL-UIO
8h 29m1 stop
LATAM Airlines Logo
12:55 am - 12:35 pmUIO-STL
11h 40m1 stop
$654LATAM Airlines
Find Deal
Sat, Oct 25 - Fri, Oct 31
American Airlines Logo
5:23 am - 8:52 pmSTL-UIO
15h 29m1 stop
American Airlines Logo
8:27 am - 10:27 pmUIO-STL
15h 00m1 stop
$661American Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 12
LATAM Airlines Logo
5:15 pm - 7:05 pmSTL-UIO
49h 50m2 stops
LATAM Airlines Logo
12:55 am - 12:35 pmUIO-STL
11h 40m1 stop
$670LATAM Airlines
Find Deal
Sat, Oct 25 - Fri, Oct 31
Delta Logo
6:00 am - 8:00 pmSTL-UIO
13h 00m1 stop
Delta Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$683Delta
Find Deal
Mon, Feb 9 - Sat, Feb 28
Avianca Logo
11:25 am - 11:35 pmSTL-GYE
35h 10m2 stops
Avianca Logo
3:30 am - 9:48 amGYE-STL
31h 18m2 stops
$4,260Avianca
Find Deal
Thu, Dec 4 - Thu, Feb 19
Avianca Logo
5:02 pm - 8:55 amSTL-UIO
14h 53m2 stops
Avianca Logo
3:55 am - 6:33 pmUIO-STL
38h 38m3 stops
$6,858Avianca
Find Deal
Mon, Jan 5 - Wed, Apr 1

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Oct 25
STL10:30 amLambert-St Louis
8h 29m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Oct 31
UIO12:55 amQuito Mariscal Sucr
11h 40m
1 stop
STL12:35 pmLambert-St Louis
$654
Find similar
LATAM Airlines
Oct 25
STL5:15 pmLambert-St Louis
49h 50m
2 stops
UIO7:05 pmQuito Mariscal Sucr
Oct 31
UIO12:55 amQuito Mariscal Sucr
11h 40m
1 stop
STL12:35 pmLambert-St Louis
$670
Find similar
LATAM Airlines
Oct 25
STL10:30 amLambert-St Louis
8h 29m
1 stop
UIO6:59 pmQuito Mariscal Sucr
Nov 1
UIO6:45 pmQuito Mariscal Sucr
46h 25m
2 stops
STL5:10 pmLambert-St Louis
$722
Find similar

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Dec 4
STL6:15 amLambert-St Louis
28h 03m
2 stops
GYE11:18 amGuayaquil Jose Joaquin de Olmedo
Feb 20
GYE8:34 amGuayaquil Jose Joaquin de Olmedo
33h 01m
2 stops
STL4:35 pmLambert-St Louis
$605
Find similar
United Airlines
Oct 23
STL5:00 amLambert-St Louis
18h 25m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Oct 29
UIO12:35 amQuito Mariscal Sucr
10h 04m
1 stop
STL10:39 amLambert-St Louis
$619
Find similar
United Airlines
Nov 1
STL8:20 amLambert-St Louis
15h 25m
1 stop
UIO11:45 pmQuito Mariscal Sucr
Nov 11
UIO1:35 amQuito Mariscal Sucr
18h 12m
1 stop
STL6:47 pmLambert-St Louis
$624
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 September 11, 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

Thu 12/4

6:15 am-11:18 am

2 stops28h 03m

Guayaquil Jose Joaquin de Olmedo

Fri 2/20

8:34 am-4:35 pm

2 stops33h 01m

$605

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 10/23

7:05 am-6:59 pm

1 stop11h 54m

Quito Mariscal Sucr

Wed 10/29

12:55 am-2:43 pm

1 stop13h 48m

$614

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 10/23

5:00 am-11:25 pm

2 stops18h 25m

Quito Mariscal Sucr

Wed 10/29

12:35 am-10:39 am

1 stop10h 04m

$619

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

9:43 am-8:52 pm

2 stops11h 09m

Quito Mariscal Sucr

Wed 11/12

8:27 am-10:27 pm

1 stop15h 00m

$629

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 10/25

10:30 am-6:59 pm

1 stop8h 29m

Quito Mariscal Sucr

Fri 10/31

12:55 am-12:35 pm

1 stop11h 40m

$654

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

5:23 am-8:52 pm

1 stop15h 29m

Quito Mariscal Sucr

Wed 11/12

8:27 am-10:27 pm

1 stop15h 00m

$661

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 10/25

5:15 pm-7:05 pm

2 stops49h 50m

Quito Mariscal Sucr

Fri 10/31

12:55 am-12:35 pm

1 stop11h 40m

$670

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/9

6:00 am-8:00 pm

1 stop13h 00m

Quito Mariscal Sucr

Sat 2/28

7:00 pm-10:50 am

2 stops16h 50m

$683

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 12/4

11:25 am-11:35 pm

2 stops35h 10m

Guayaquil Jose Joaquin de Olmedo

Thu 2/19

3:30 am-9:48 am

2 stops31h 18m

$4,260

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 1/5

5:02 pm-8:55 am

2 stops14h 53m

Quito Mariscal Sucr

Wed 4/1

3:55 am-6:33 pm

3 stops38h 38m

$6,858

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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, October 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 $571. If you’re not able to fly to Ecuador in October, then January is your next best option. Flight prices from St. Louis to Ecuador during January average around $648.

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.

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

Direct flights

None
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
United AirlinesPriceFrom $451Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
American AirlinesPriceFrom $516Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $571Free CancellationRating
7.5
1,847 reviews
Search LATAM Airlines flights
DeltaPriceFrom $595Free CancellationRating
7.9
7,960 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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