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Cheap flights from St. Louis to Ecuador from $160

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 11/13. 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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0 bags

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Find the cheapest flights from St. Louis to Ecuador

Cheap round-trip flights

Spirit Airlines Logo
12:20 pm - 11:45 pmSTL-GYE
10h 25m1 stop
Spirit Airlines Logo
12:59 am - 11:01 amGYE-STL
11h 02m1 stop
$577Spirit Airlines
Find Deal
Thu, Feb 19 - Sat, Feb 28
United Airlines Logo
6:15 am - 11:18 amSTL-GYE
28h 03m2 stops
United Airlines Logo
2:35 pm - 10:46 amGYE-STL
21h 11m2 stops
$597United Airlines
Find Deal
Thu, Dec 4 - Fri, Feb 20
American Airlines Logo
6:00 am - 8:52 pmSTL-UIO
14h 52m2 stops
American Airlines Logo
12:55 am - 4:11 pmUIO-STL
16h 16m1 stop
$629American Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 11
Delta Logo
6:00 am - 6:55 pmSTL-UIO
12h 55m1 stop
Delta Logo
12:55 am - 4:10 pmUIO-STL
16h 15m1 stop
$634Delta
Find Deal
Fri, Oct 31 - Thu, Nov 6
American Airlines Logo
6:03 am - 8:52 pmSTL-UIO
14h 49m2 stops
American Airlines Logo
8:27 am - 10:52 pmUIO-STL
15h 25m1 stop
$639American Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
Multiple Airlines Logo
5:11 pm - 11:45 pmSTL-GYE
53h 34m2 stops
Multiple Airlines Logo
12:59 am - 11:01 amGYE-STL
11h 02m1 stop
$643Multiple Airlines
Find Deal
Thu, Feb 19 - Sat, Feb 28
LATAM Airlines Logo
6:00 am - 8:00 pmSTL-UIO
13h 00m1 stop
LATAM Airlines Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$654LATAM Airlines
Find Deal
Mon, Feb 2 - Sat, Feb 21
LATAM Airlines Logo
11:51 am - 5:17 amSTL-UIO
16h 26m2 stops
LATAM Airlines Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$659LATAM Airlines
Find Deal
Mon, Feb 2 - Sat, Feb 21
Delta Logo
7:05 pm - 8:00 pmSTL-UIO
23h 55m1 stop
Delta Logo
11:45 pm - 8:39 pmUIO-STL
21h 54m1 stop
$762Delta
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Thu, Feb 19 - Sun, Mar 1
Multiple Airlines Logo
9:20 am - 1:10 pmSTL-UIO
27h 50m3 stops
Multiple Airlines Logo
10:05 am - 3:29 pmUIO-STL
30h 24m3 stops
$1,013Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7

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
GYE2:35 pmGuayaquil Jose Joaquin de Olmedo
21h 11m
2 stops
STL10:46 amLambert-St Louis
$597
Find similar
United Airlines
Feb 19
STL4:17 pmLambert-St Louis
42h 01m
2 stops
GYE11:18 amGuayaquil Jose Joaquin de Olmedo
Mar 1
GYE12:20 pmGuayaquil Jose Joaquin de Olmedo
34h 54m
2 stops
STL10:14 pmLambert-St Louis
$615
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
15h 15m
1 stop
STL3:50 pmLambert-St Louis
$624
Find similar

LATAM Airlines flights from St. Louis to Ecuador

Our best LATAM Airlines deals on St. Louis to Ecuador flight tickets
LATAM Airlines
Feb 2
STL6:00 amLambert-St Louis
13h 00m
1 stop
UIO8:00 pmQuito Mariscal Sucr
Feb 21
UIO7:00 pmQuito Mariscal Sucr
16h 50m
2 stops
STL10:50 amLambert-St Louis
$654
Find similar
LATAM Airlines
Feb 2
STL11:51 amLambert-St Louis
16h 26m
2 stops
UIO5:17 amQuito Mariscal Sucr
Feb 21
UIO7:00 pmQuito Mariscal Sucr
16h 50m
2 stops
STL10:50 amLambert-St Louis
$659
Find similar
LATAM Airlines
Feb 19
STL6:00 amLambert-St Louis
46h 17m
2 stops
UIO5:17 amQuito Mariscal Sucr
Mar 1
UIO7:00 pmQuito Mariscal Sucr
24h 04m
2 stops
STL6:04 pmLambert-St Louis
$686
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 17, 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 2/19

12:20 pm-11:45 pm

1 stop10h 25m

Guayaquil Jose Joaquin de Olmedo

Sat 2/28

12:59 am-11:01 am

1 stop11h 02m

$577

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

2:35 pm-10:46 am

2 stops21h 11m

$597

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

6:00 am-8:52 pm

2 stops14h 52m

Quito Mariscal Sucr

Tue 11/11

12:55 am-4:11 pm

1 stop16h 16m

$629

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 10/31

6:00 am-6:55 pm

1 stop12h 55m

Quito Mariscal Sucr

Thu 11/6

12:55 am-4:10 pm

1 stop16h 15m

$634

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 10/31

6:03 am-8:52 pm

2 stops14h 49m

Quito Mariscal Sucr

Fri 11/7

8:27 am-10:52 pm

1 stop15h 25m

$639

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 2/19

5:11 pm-11:45 pm

2 stops53h 34m

Guayaquil Jose Joaquin de Olmedo

Sat 2/28

12:59 am-11:01 am

1 stop11h 02m

$643

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/2

6:00 am-8:00 pm

1 stop13h 00m

Quito Mariscal Sucr

Sat 2/21

7:00 pm-10:50 am

2 stops16h 50m

$654

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/2

11:51 am-5:17 am

2 stops16h 26m

Quito Mariscal Sucr

Sat 2/21

7:00 pm-10:50 am

2 stops16h 50m

$659

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 2/19

7:05 pm-8:00 pm

1 stop23h 55m

Quito Mariscal Sucr

Sun 3/1

11:45 pm-8:39 pm

1 stop21h 54m

$762

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Fri 10/31

9:20 am-1:10 pm

3 stops27h 50m

Quito Mariscal Sucr

Fri 11/7

10:05 am-3:29 pm

3 stops30h 24m

$1,013

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, 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 September is your next best option. Flight prices from St. Louis to Ecuador during September average around $674.

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.
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  • 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
10,000 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $571Free CancellationRating
7.5
1,849 reviews
Search LATAM Airlines flights
DeltaPriceFrom $595Free CancellationRating
7.9
7,961 reviews
Search Delta flights
United AirlinesPriceFrom $636Free CancellationRating
7.4
8,926 reviews
Search United 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.

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