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Cheap flights from St. Louis to Ecuador from $264

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 8/10. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Ecuador

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
LATAM Airlines Logo
8:45 am - 11:48 pm
UIO
-
STL
15h 03m
2 stops
$667LATAM Airlines
Mon, Oct 19 - Mon, Oct 26
Delta Logo
6:00 am - 6:59 pm
STL
-
UIO
12h 59m
1 stop
Delta Logo
12:59 am - 4:17 pm
UIO
-
STL
15h 18m
1 stop
$687Delta
Tue, Aug 18 - Mon, Aug 24
Delta Logo
6:00 am - 6:42 pm
STL
-
UIO
11h 42m
2 stops
Delta Logo
8:45 am - 11:18 pm
UIO
-
STL
15h 33m
2 stops
$692Delta
Thu, Dec 24 - Mon, Jan 11
United Airlines Logo
6:15 am - 12:30 am
STL
-
UIO
17h 15m
1 stop
United Airlines Logo
1:35 am - 2:13 pm
UIO
-
STL
13h 38m
1 stop
$751United Airlines
Sat, Nov 14 - Tue, Nov 17
United Airlines Logo
6:15 am - 12:30 am
STL
-
UIO
17h 15m
1 stop
United Airlines Logo
1:35 am - 3:41 pm
UIO
-
STL
15h 06m
2 stops
$756United Airlines
Sat, Nov 14 - Tue, Nov 17
American Airlines Logo
7:32 am - 11:58 pm
STL
-
UIO
16h 26m
2 stops
American Airlines Logo
11:59 pm - 2:50 pm
UIO
-
STL
14h 51m
2 stops
$767American Airlines
Mon, Jul 20 - Mon, Aug 3
United Airlines Logo
2:57 pm - 5:00 am
STL
-
UIO
14h 03m
1 stop
United Airlines Logo
7:00 am - 5:42 pm
UIO
-
STL
10h 42m
1 stop
$782United Airlines
Mon, Jul 20 - Fri, Jul 31
American Airlines Logo
7:32 am - 11:58 pm
STL
-
UIO
16h 26m
2 stops
American Airlines Logo
11:59 pm - 10:24 am
UIO
-
STL
10h 25m
1 stop
$793American Airlines
Mon, Jul 20 - Mon, Aug 3
Copa Airlines Logo
9:30 am - 11:38 pm
STL
-
GYE
14h 08m
2 stops
Copa Airlines Logo
12:22 pm - 12:02 pm
GYE
-
STL
23h 40m
2 stops
$839Copa Airlines
Wed, Jul 22 - Mon, Aug 31
Multiple Airlines Logo
12:10 pm - 8:55 am
STL
-
GYE
20h 45m
2 stops
Multiple Airlines Logo
10:05 am - 2:02 pm
GYE
-
STL
27h 57m
3 stops
$1,787Multiple Airlines
Wed, Jul 22 - Mon, Aug 31

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American Airlines flights from St. Louis to Ecuador

Our best American Airlines deals on St. Louis to Ecuador flight tickets
American Airlines
Jul 20
STL7:32 amLambert-St Louis
16h 26m
2 stops
UIO11:58 pmQuito Mariscal Sucr
Aug 3
UIO11:59 pmQuito Mariscal Sucr
14h 51m
2 stops
STL2:50 pmLambert-St Louis
$767
American Airlines
Jul 20
STL7:32 amLambert-St Louis
16h 26m
2 stops
UIO11:58 pmQuito Mariscal Sucr
Aug 3
UIO11:59 pmQuito Mariscal Sucr
10h 25m
1 stop
STL10:24 amLambert-St Louis
$793
American Airlines
Jul 14
STL11:00 amLambert-St Louis
12h 58m
1 stop
UIO11:58 pmQuito Mariscal Sucr
Jul 28
UIO11:59 pmQuito Mariscal Sucr
10h 25m
1 stop
STL10:24 amLambert-St Louis
$839

United Airlines flights from St. Louis to Ecuador

Our best United Airlines deals on St. Louis to Ecuador flight tickets
United Airlines
Jul 20
STL2:57 pmLambert-St Louis
14h 03m
1 stop
UIO5:00 amQuito Mariscal Sucr
Jul 31
UIO7:00 amQuito Mariscal Sucr
10h 42m
1 stop
STL5:42 pmLambert-St Louis
$782
United Airlines
Jul 19
STL6:30 pmLambert-St Louis
10h 30m
1 stop
UIO5:00 amQuito Mariscal Sucr
Jul 30
UIO12:35 amQuito Mariscal Sucr
17h 07m
1 stop
STL5:42 pmLambert-St Louis
$802
United Airlines
Jul 20
STL2:57 pmLambert-St Louis
8h 28m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Aug 3
UIO7:00 amQuito Mariscal Sucr
15h 45m
1 stop
STL10:45 pmLambert-St Louis
$806

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 June 30, 2026.
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

Cheapest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 10/19

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Mon 10/26

8:45 am-11:48 pm

2 stops15h 03m

$667

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 8/18

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Mon 8/24

12:59 am-4:17 pm

1 stop15h 18m

$687

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 12/24

6:00 am-6:42 pm

2 stops11h 42m

Quito Mariscal Sucr

Mon 1/11

8:45 am-11:18 pm

2 stops15h 33m

$692

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/14

6:15 am-12:30 am

1 stop17h 15m

Quito Mariscal Sucr

Tue 11/17

1:35 am-2:13 pm

1 stop13h 38m

$751

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/14

6:15 am-12:30 am

1 stop17h 15m

Quito Mariscal Sucr

Tue 11/17

1:35 am-3:41 pm

2 stops15h 06m

$756

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 7/20

7:32 am-11:58 pm

2 stops16h 26m

Quito Mariscal Sucr

Mon 8/3

11:59 pm-2:50 pm

2 stops14h 51m

$767
Quickest round-trip

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 7/20

2:57 pm-5:00 am

1 stop14h 03m

Quito Mariscal Sucr

Fri 7/31

7:00 am-5:42 pm

1 stop10h 42m

$782

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 7/20

7:32 am-11:58 pm

2 stops16h 26m

Quito Mariscal Sucr

Mon 8/3

11:59 pm-10:24 am

1 stop10h 25m

$793

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 7/22

9:30 am-11:38 pm

2 stops14h 08m

Guayaquil Jose Joaquin de Olmedo

Mon 8/31

12:22 pm-12:02 pm

2 stops23h 40m

$839

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Wed 7/22

12:10 pm-8:55 am

2 stops20h 45m

Guayaquil Jose Joaquin de Olmedo

Mon 8/31

10:05 am-2:02 pm

3 stops27h 57m

$1,787

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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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

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

You could potentially save up to 5% 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

11h 42m

Direct flights

None
The fastest flight from St. Louis to Ecuador takes 11h 42m
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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Frequently asked questions about flying from St. Louis to Ecuador

  • 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
7.1
11,762 reviews
Search American Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.8
8,451 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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