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Ecuador

$180+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UIO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$605
(United Airlines)

One-way from

$180
(KAYAK)
From Lambert-St Louis to Ecuador
Search Deals
One-way flight from Lambert-St Louis to Ecuador
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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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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 stops28h 03mUnited Airlines
Fri 2/208:34 amGYE - STL
2 stops33h 01mUnited Airlines
Deal found 9/10$605
This Delta deal was found by Cheapflights users on 9/8. 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.
Thu 10/237:05 amSTL - UIO
1 stop11h 54mDelta
Wed 10/2912:55 amUIO - STL
1 stop13h 48mDelta
Deal found 9/8$614
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/235:00 amSTL - UIO
2 stops18h 25mUnited Airlines
Wed 10/2912:35 amUIO - STL
1 stop10h 04mUnited Airlines
Deal found 9/8$619
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/18:20 amSTL - UIO
1 stop15h 25mUnited Airlines
Tue 11/111:35 amUIO - STL
1 stop18h 12mUnited Airlines
Deal found 9/9$624
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 11/19:43 amSTL - UIO
2 stops11h 09mAmerican Airlines
Wed 11/128:27 amUIO - STL
1 stop15h 00mAmerican Airlines
Deal found 9/11$629
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:30 amSTL - UIO
1 stop8h 29mLATAM Airlines
Fri 10/3112:55 amUIO - STL
1 stop11h 40mLATAM Airlines
Deal found 9/9$654
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 12/45:10 amSTL - GYE
1 stop16h 56mAmerican Airlines
Fri 2/202:33 pmGYE - STL
1 stop10h 13mAmerican Airlines
Deal found 9/10$902
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:52 pmSTL - GPS
3 stops41h 19mLATAM Airlines
Sun 11/21:35 pmGPS - STL
2 stops26h 35mLATAM Airlines
Deal found 9/11$1,309
This United deal was found by Cheapflights users on 9/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/224:35 pmSTL - GPS
2 stops43h 45mMultiple Airlines
Fri 11/288:55 amGPS - STL
2 stops37h 27mMultiple Airlines
Deal found 9/11$1,826
This LATAM Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/1110:30 amSTL - GPS
3 stops23h 56mLATAM Airlines
Wed 10/1510:56 amGPS - STL
3 stops29h 51mLATAM Airlines
Deal found 9/10$2,032
This LATAM Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/1110:30 amSTL - SCY
3 stops24h 33mLATAM Airlines
Tue 10/1412:08 pmSCY - STL
3 stops21h 18mLATAM Airlines
Deal found 9/10$2,077
This Gurufare deal was found by Cheapflights users on 9/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/225:12 pmSTL - GPS
3 stops42h 48mLATAM Airlines
Fri 11/2810:11 amGPS - STL
3 stops26h 49mLATAM Airlines
Deal found 9/11$3,127

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 September 11, 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

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

5:23 am-8:52 pm

1 stop15h 29m

Quito Mariscal Sucr

Thu 10/30

6:30 am-11:54 pm

2 stops17h 24m

$619

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

8:20 am-11:45 pm

1 stop15h 25m

Quito Mariscal Sucr

Tue 11/11

1:35 am-6:47 pm

1 stop18h 12m

$624

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/9

10:07 am-12:30 am

1 stop13h 23m

Quito Mariscal Sucr

Fri 2/27

1:35 am-4:35 pm

1 stop16h 00m

$624

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/9

10:00 am-8:00 pm

1 stop9h 00m

Quito Mariscal Sucr

Sat 2/28

7:00 pm-10:50 am

2 stops16h 50m

$629

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

7:00 am-8:52 pm

2 stops13h 52m

Quito Mariscal Sucr

Tue 11/11

12:55 am-12:37 pm

2 stops12h 42m

$629

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 12/4

5:10 am-11:06 pm

1 stop16h 56m

Guayaquil Jose Joaquin de Olmedo

Fri 2/20

2:33 pm-11:46 pm

1 stop10h 13m

$902

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Sun 10/26

6:52 pm-11:11 am

3 stops41h 19m

Baltra

Sun 11/2

1:35 pm-4:10 pm

2 stops26h 35m

$1,309

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 21 results
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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 month to book a flight from St. Louis to Ecuador?

Currently, April is the cheapest month in which you can book a flight from St. Louis to Ecuador (average of $463). Flying from St. Louis to Ecuador in December is currently the most expensive (average of $791). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 September 11, 2025.

When flying from St. Louis to Ecuador, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 11, 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
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,847 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 11h 54m. United Airlines provides one of the quickest options available for as low as $614. There are 2790 mi between St. Louis and Ecuador. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from St. Louis to Ecuador one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $180. However, be on the lookout for offers from Avianca and American Airlines, as they are both options that can get you from St. Louis to Ecuador for a low price.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Ecuador?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Ecuador (average of $463). Flying from St. Louis to Ecuador in December is currently the most expensive (average of $791). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$451Average$818FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$516Average$948FlexibilityNo cancel feeOn-time71%
LATAM AirlinesCheapest$571Average$799FlexibilityNo cancel feeOn-time81%
DeltaCheapest$595Average$763FlexibilityNo cancel feeOn-timeN/A

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