HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ecuador

$379+ Cheap flights from St. Louis (STL) to Ecuador

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UIO
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Ecuador with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from St. Louis to Ecuador

Cheapest flights from St. Louis to Ecuador
Explore the most affordable flight options available from St. Louis to Ecuador. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This Spirit Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Spirit Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:47 pmSTL - GYE
1 stop7h 56mSpirit Airlines
Wed 12/1012:49 amGYE - STL
1 stop14h 03mSpirit Airlines
Deal found 11/19$458
This Mytrip deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:51 amSTL - UIO
2 stops18h 29mMultiple Airlines
Mon 12/291:48 pmUIO - STL
2 stops22h 08mMultiple Airlines
Deal found 11/18$727
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:05 pmSTL - UIO
3 stops24h 50mMultiple Airlines
Wed 12/103:25 pmUIO - STL
2 stops23h 27mMultiple Airlines
Deal found 11/19$805
This United Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:42 pmSTL - UIO
2 stops28h 48mUnited Airlines
Thu 12/188:00 amUIO - STL
1 stop14h 55mUnited Airlines
Deal found 11/20$807
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:27 pmSTL - UIO
2 stops11h 43mUnited Airlines
Tue 12/91:35 amUIO - STL
1 stop15h 29mUnited Airlines
Deal found 11/19$821
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:12 pmSTL - GYE
2 stops31h 28mDelta
Thu 12/118:40 pmGYE - STL
2 stops20h 26mDelta
Deal found 11/19$838
This Priceline deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:22 pmSTL - UIO
2 stops32h 38mLATAM Airlines
Mon 12/2911:45 pmUIO - STL
1 stop13h 36mLATAM Airlines
Deal found 11/18$844
This LATAM Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:30 amSTL - UIO
1 stop9h 30mLATAM Airlines
Fri 12/127:00 pmUIO - STL
2 stops16h 24mLATAM Airlines
Deal found 11/18$856
This United Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/84:45 pmSTL - UIO
1 stop12h 25mUnited Airlines
Thu 12/111:35 amUIO - STL
1 stop15h 29mUnited Airlines
Deal found 11/18$869
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:15 amSTL - UIO
1 stop13h 44mAmerican Airlines
Tue 12/912:55 amUIO - STL
1 stop16h 11mAmerican Airlines
Deal found 11/19$877
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amSTL - GYE
2 stops37h 28mUnited Airlines
Fri 2/202:35 pmGYE - STL
2 stops43h 48mUnited Airlines
Deal found 11/19$1,003
This United Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:45 pmSTL - GYE
2 stops28h 56mUnited Airlines
Tue 1/2012:20 pmGYE - STL
2 stops22h 02mUnited Airlines
Deal found 11/20$1,216

Cheap flight deals from St. Louis to Ecuador

Keep the following information in mind while searching for St. Louis to Ecuador flight deals. Data was last updated November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$372
(Spirit Airlines)
Provider with most accurate pricing for Lambert-St Louis-Guayaquil Jose Joaquin de Olmedo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Guayaquil Jose Joaquin de Olmedo flights.
Search Deals
From Lambert-St Louis to Ecuador
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated November 20, 2025.
Use the filters below to find and compare flights from St. Louis to Ecuador that are best for you.

Fly from

St. Louis

Fly to

Ecuador

Route

Depart

Return

Price

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sun 12/7

2:47 pm-11:43 pm

1 stop7h 56m

Guayaquil Jose Joaquin de Olmedo

Wed 12/10

12:49 am-1:52 pm

1 stop14h 03m

$458

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

9:59 am-9:35 pm

1 stop10h 36m

Quito Mariscal Sucr

Sun 2/22

7:00 pm-5:43 pm

2 stops23h 43m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/8

6:00 am-12:30 am

1 stop17h 30m

Quito Mariscal Sucr

Fri 2/20

1:35 am-9:23 am

1 stop8h 48m

$721

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

6:40 pm-12:30 am

2 stops28h 50m

Quito Mariscal Sucr

Sat 2/21

1:35 am-9:23 am

1 stop8h 48m

$746

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/8

1:00 pm-9:35 pm

1 stop7h 35m

Quito Mariscal Sucr

Sat 2/21

7:05 am-11:38 pm

2 stops17h 33m

$752

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/15

10:00 am-8:35 pm

1 stop10h 35m

Quito Mariscal Sucr

Sat 3/21

7:00 pm-10:50 am

2 stops15h 50m

$793

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 12/14

5:27 pm-12:30 am

2 stops30h 03m

Quito Mariscal Sucr

Wed 12/17

1:35 am-10:43 pm

2 stops22h 08m

$807

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sun 12/7

5:12 pm-1:40 am

2 stops31h 28m

Guayaquil Jose Joaquin de Olmedo

Thu 12/11

8:40 pm-4:06 pm

2 stops20h 26m

$838

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 12/4

6:15 am-8:43 pm

2 stops37h 28m

Guayaquil Jose Joaquin de Olmedo

Fri 2/20

2:35 pm-9:23 am

2 stops43h 48m

$1,003

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Sat 1/3

6:35 pm-11:42 pm

2 stops28h 07m

Guayaquil Jose Joaquin de Olmedo

Sat 1/10

8:34 am-9:22 am

2 stops25h 48m

$1,271

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from St. Louis to Ecuador

Have a flexible travel schedule? Discover the best time to fly to Ecuador from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Ecuador

What is the cheapest time of day to fly from STL to EC?

Find hourly flight availability from St. Louis to Ecuador. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

One of the essential ways to save on airfare from St. Louis to Ecuador is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 37% on airfare.

Reviews of airlines servicing Ecuador

Get insights into the airlines that provide service to Ecuador. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ecuador. Reviews last updated November 20, 2025.
See what other customers who have flown with Delta, LATAM Airlines, and United Airlines from St. Louis to Ecuador have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,002 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,002 reviews
Delta
7.9
Good
8,002 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
LATAM Airlines
7.5
Good
1,882 reviews
Delta
7.9
Good
8,002 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,027 reviews
Delta
7.9
Good
8,002 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,045 reviews
Delta
7.9
Good
8,002 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Ecuador. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Ecuador?

    For a flight from St. Louis to Ecuador, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • How long is the flight from St. Louis to Ecuador?

    A quick flight from St. Louis to Ecuador can take about 7h 56m. Spirit Airlines provides one of the quickest options available for as low as $458. There are 2902 mi between St. Louis and Ecuador. This flight may include one or multiple stops.

  • What are the most popular routes from St. Louis to Ecuador?

    Most travelers choose Lambert-St Louis - Quito Mariscal Sucr, Lambert-St Louis - Guayaquil Jose Joaquin de Olmedo or Lambert-St Louis - Baltra when deciding on the best route from St. Louis to Ecuador.

  • Can I find deals for flights from St. Louis to Ecuador that include hotel bookings?

    Yes. In addition to deals on St. Louis to Ecuador flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Ecuador?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Ecuador.

  • Can I find deals for business class flights from St. Louis to Ecuador?

    Yes. Cheapflights offers flight deals from St. Louis to Ecuador by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Ecuador

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Jose Maria Cordova Intl flights
St. Louis to Lima flights
St. Louis to Santiago flights
St. Louis to Ministro Pistarini flights
Kansas City to Guarulhos Intl flights
St. Louis to Guarulhos Intl flights
Kansas City to Lima flights
Kansas City to Ministro Pistarini flights
Kansas City to Rio de Janeiro–Galeão Intl flights
Kansas City to Jose Maria Cordova Intl flights
Kansas City to Bogotá flights
Kansas City to Jorge Newbery flights
St. Louis to Cuzco flights
St. Louis to Rio de Janeiro–Galeão Intl flights
Kansas City to Santiago flights
St. Louis to Quito flights
St. Louis to Jorge Newbery flights
Kansas City to Quito flights
St. Louis to Bogotá flights
St. Louis to Cartagena flights
Kansas City to Cali flights
St. Louis to Santos Dumont flights
Kansas City to Cuzco flights
Kansas City to Asuncion flights
Kansas City to Santos Dumont flights
St. Louis to Montevideo flights
Kansas City to Cartagena flights
Springfield to Jose Maria Cordova Intl flights
Kansas City to Montevideo flights
Kansas City to Brasilia flights
St. Louis to Guayaquil flights
Kansas City to Guayaquil flights
St. Louis to Bucaramanga flights
Kansas City to Barranquilla flights
St. Louis to Santa Cruz de la Sierra flights
Kansas City to Belo Horizonte flights
Springfield to Santiago flights
Kansas City to Santa Cruz de la Sierra flights
Kansas City to Florianopolis flights
St. Louis to Arequipa flights
Kansas City to Cordoba flights
Kansas City to Santa Marta flights
Kansas City to Arequipa flights
Kansas City to Manaus flights
Kansas City to Cuenca flights

Top 4 airlines flying from St. Louis to Ecuador

Discover the top 4 airlines that operate flights from St. Louis to Ecuador. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$516Average$890FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$634Average$768FlexibilityNo cancel feeOn-time69%
DeltaCheapest$661Average$763FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$664Average$917FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.