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St. Louis

$683+ Cheap flights from Quito (UIO) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
UIO — STL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Quito to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Quito (UIO) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$683
(United Airlines)

Popular in

June

Cheapest in

May

Average price

$755
From Quito Mariscal Sucr to Lambert-St Louis
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Highest demand for flights based on searches. 6% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Quito to St. Louis

Cheapest flights from Quito to St. Louis
Explore the most affordable flight options available from Quito to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 12/101:35 amUIO - STL
1 stop9h 29mUnited Airlines
Mon 12/156:15 amSTL - UIO
1 stop17h 15mUnited Airlines
Deal found 9/15$772
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/81:35 amUIO - STL
2 stops11h 40mUnited Airlines
Sun 12/286:35 pmSTL - UIO
2 stops28h 55mUnited Airlines
Deal found 9/15$830
This American Airlines deal was found by Cheapflights users on 9/14. 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 9/257:00 amUIO - STL
1 stop16h 59mAmerican Airlines
Tue 10/145:23 amSTL - UIO
1 stop15h 29mAmerican Airlines
Deal found 9/14$996
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:05 amUIO - STL
2 stops34h 17mLATAM Airlines
Sun 12/281:21 pmSTL - UIO
2 stops32h 39mLATAM Airlines
Deal found 9/16$1,055
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 9/2412:35 amUIO - STL
1 stop9h 17mUnited Airlines
Tue 10/146:15 amSTL - UIO
1 stop17h 10mUnited Airlines
Deal found 9/15$1,074

Cheapflights Fare Finder

 
Customize your flight search to find flights from Quito to St. Louis 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 16, 2025.
Use the filters below to find and compare flights from Quito to St. Louis that are best for you.

Fly from

Quito

Fly to

St. Louis

Route

Depart

Return

Price

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 1/21

1:35 am-3:52 pm

1 stop15h 17m

Lambert-St Louis

Sun 3/1

6:45 pm-12:30 am

2 stops28h 45m

$683

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 1/20

1:35 am-10:00 pm

1 stop21h 25m

Lambert-St Louis

Tue 2/24

10:30 am-12:30 am

2 stops13h 00m

$683

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 1/21

1:35 am-3:52 pm

1 stop15h 17m

Lambert-St Louis

Sat 2/28

4:39 pm-12:30 am

1 stop30h 51m

$695

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 1/20

1:35 am-10:00 pm

1 stop21h 25m

Lambert-St Louis

Sun 3/1

10:10 am-12:30 am

1 stop13h 20m

$695

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 2/4

1:35 am-12:29 pm

2 stops35h 54m

Lambert-St Louis

Fri 2/13

6:00 am-12:30 am

1 stop17h 30m

$695

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 1/20

1:35 am-10:00 pm

1 stop21h 25m

Lambert-St Louis

Sat 2/28

6:45 pm-12:30 am

2 stops28h 45m

$695

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 1/21

7:45 am-8:09 pm

2 stops13h 24m

Lambert-St Louis

Tue 2/24

7:30 am-9:50 pm

2 stops13h 20m

$697

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Quito 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 Quito to St. Louis

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

Find hourly flight availability from Quito to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Quito to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 16% versus a flight in the afternoon.

Related info for your journey

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

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

    A quick flight from Quito to St. Louis can take about 15h 17m. United Airlines provides one of the quickest options available for as low as $683. The distance between Quito and St. Louis is about 2790 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Quito to St. Louis 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 Quito to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Quito to St. Louis (average of $311). Flying from Quito to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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