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Ecuador

$396+ 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 12/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UIO
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
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 August 21, 2025.

Round-trip from

$560
(Kiwi.com)

One-way from

$396
(United Airlines)
From Lambert-St Louis to Ecuador
Search Deals
One-way flight from Lambert-St Louis to Ecuador
Search Deals

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 August 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:20 pmSTL - GYE
1 stop10h 25mMultiple Airlines
Fri 2/2011:35 amGYE - STL
2 stops48h 26mMultiple Airlines
Deal found 8/21$560
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:10 amSTL - UIO
1 stop12h 20mDelta
Thu 9/2511:20 pmUIO - STL
1 stop18h 27mDelta
Deal found 8/20$614
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/166:15 amSTL - UIO
1 stop17h 10mUnited Airlines
Wed 9/2412:35 amUIO - STL
1 stop18h 22mUnited Airlines
Deal found 8/21$689
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Thu 12/46:15 amSTL - GYE
2 stops28h 03mUnited Airlines
Fri 2/2012:20 pmGYE - STL
2 stops29h 15mUnited Airlines
Deal found 8/20$716
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Fri 11/215:24 pmSTL - UIO
2 stops30h 06mUnited Airlines
Fri 11/281:35 amUIO - STL
2 stops39h 11mUnited Airlines
Deal found 8/20$763
This American Airlines deal was found by Cheapflights users on 8/21. 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 12/45:25 amSTL - GYE
1 stop15h 40mAmerican Airlines
Fri 2/207:35 amGYE - STL
2 stops25h 31mAmerican Airlines
Deal found 8/21$787
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Fri 12/126:15 amSTL - UIO
1 stop17h 15mUnited Airlines
Sun 12/218:00 amUIO - STL
2 stops34h 54mUnited Airlines
Deal found 8/20$809
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sun 12/1411:14 amSTL - UIO
2 stops11h 45mAmerican Airlines
Wed 12/1712:40 amUIO - STL
2 stops12h 18mAmerican Airlines
Deal found 8/21$835
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:14 amSTL - UIO
2 stops11h 45mAmerican Airlines
Sat 12/2012:40 amUIO - STL
2 stops12h 18mAmerican Airlines
Deal found 8/20$860
This Delta deal was found by Cheapflights users on 8/21. 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 12/47:20 amSTL - GYE
2 stops17h 20mDelta
Fri 2/204:30 pmGYE - STL
2 stops19h 20mDelta
Deal found 8/21$876
This LATAM Airlines deal was found by Cheapflights users on 8/21. 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 stops28h 54mLATAM Airlines
Deal found 8/21$2,039
This Priceline deal was found by Cheapflights users on 8/21. 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.
Mon 10/611:21 amSTL - GPS
3 stops24h 50mLATAM Airlines
Mon 10/1311:17 amGPS - STL
3 stops22h 09mLATAM Airlines
Deal found 8/21$2,094

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 August 21, 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

12:20 pm-11:45 pm

1 stop10h 25m

Guayaquil Jose Joaquin de Olmedo

Fri 2/20

11:35 am-11:01 am

2 stops48h 26m

$560

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 9/16

7:10 am-7:30 pm

1 stop12h 20m

Quito Mariscal Sucr

Thu 9/25

11:20 pm-5:47 pm

1 stop18h 27m

$614

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 2/10

8:25 am-11:50 pm

2 stops14h 25m

Quito Mariscal Sucr

Wed 2/11

4:00 am-4:35 pm

2 stops13h 35m

$634

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 9/16

11:05 am-11:25 pm

1 stop12h 20m

Quito Mariscal Sucr

Wed 9/24

12:35 am-6:57 pm

1 stop18h 22m

$689

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Tue 9/16

5:28 am-7:19 pm

1 stop13h 51m

Quito Mariscal Sucr

Thu 9/25

7:00 am-11:59 pm

1 stop16h 59m

$689

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

12:20 pm-4:35 pm

2 stops29h 15m

$716

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 12/4

5:25 am-10:05 pm

1 stop15h 40m

Guayaquil Jose Joaquin de Olmedo

Fri 2/20

7:35 am-8:06 am

2 stops25h 31m

$787

St. LouisGuayaquil

STL - GYE

STLGYE

Lambert-St Louis

Thu 12/4

7:20 am-1:40 am

2 stops17h 20m

Guayaquil Jose Joaquin de Olmedo

Fri 2/20

4:30 pm-10:50 am

2 stops19h 20m

$876

St. LouisSan Cristobal

STL - SCY

STLSCY

Lambert-St Louis

Sat 10/11

10:30 am-10:03 am

3 stops24h 33m

San Cristobal

Tue 10/14

12:08 pm-6:02 pm

3 stops28h 54m

$2,039

St. LouisBaltra

STL - GPS

STLGPS

Lambert-St Louis

Mon 10/6

11:21 am-11:11 am

3 stops24h 50m

Baltra

Mon 10/13

11:17 am-10:26 am

3 stops22h 09m

$2,094

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 16 results
1
2

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 August 21, 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 August 21, 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
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
1,844 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,934 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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 12h 20m. Delta 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 United Airlines, with whom users have recently found tickets for as low as $396. However, be on the lookout for offers from Spirit Airlines and LATAM 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 - Baltra or Lambert-St Louis - Guayaquil Jose Joaquin de Olmedo 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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Alternative routes for St. Louis to Ecuador

See prices for flight routes from nearby airports that may be better suited for you.
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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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$451Average$818FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$516Average$982FlexibilityNo cancel feeOn-time71%
LATAM AirlinesCheapest$571Average$799FlexibilityNo cancel feeOn-time81%
DeltaCheapest$595Average$763FlexibilityNo cancel feeOn-timeN/A

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