HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$692+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
UIO — STL
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Quito to St. Louis 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.

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 August 20, 2025.

Round-trip from

$692
(United Airlines)

Popular in

June

Cheapest in

May

Average price

$759
From Quito Mariscal Sucr to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/2412:35 amUIO - STL
1 stop18h 22mUnited Airlines
Tue 10/146:15 amSTL - UIO
1 stop17h 10mUnited Airlines
Deal found 8/18$692
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 9/257:00 amUIO - STL
2 stops16h 53mAmerican Airlines
Tue 10/146:25 amSTL - UIO
2 stops14h 27mAmerican Airlines
Deal found 8/19$697
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Sun 9/712:35 amUIO - STL
1 stop18h 23mUnited Airlines
Tue 9/167:04 pmSTL - UIO
2 stops28h 21mUnited Airlines
Deal found 8/18$773
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/104:15 amUIO - STL
2 stops29h 25mMultiple Airlines
Tue 9/165:11 pmSTL - UIO
1 stop26h 19mMultiple Airlines
Deal found 8/18$811
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/812:35 amUIO - STL
1 stop18h 23mUnited Airlines
Tue 9/167:04 pmSTL - UIO
2 stops28h 21mUnited Airlines
Deal found 8/18$817
This Priceline deal was found by Cheapflights users on 8/18. 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 9/113:50 pmUIO - STL
2 stops26h 33mMultiple Airlines
Tue 9/166:01 amSTL - UIO
1 stop13h 29mMultiple Airlines
Deal found 8/18$822
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/51:10 amUIO - STL
2 stops32h 30mMultiple Airlines
Tue 9/165:11 pmSTL - UIO
1 stop26h 19mMultiple Airlines
Deal found 8/18$831
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:20 amUIO - STL
2 stops32h 42mMultiple Airlines
Tue 9/165:11 pmSTL - UIO
1 stop26h 19mMultiple Airlines
Deal found 8/18$832
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/74:20 amUIO - STL
2 stops32h 42mMultiple Airlines
Tue 9/165:11 pmSTL - UIO
1 stop26h 19mMultiple Airlines
Deal found 8/18$861

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 August 20, 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 9/24

12:35 am-6:57 pm

1 stop18h 22m

Lambert-St Louis

Tue 10/14

6:15 am-11:25 pm

1 stop17h 10m

$692

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 9/25

7:00 am-11:59 pm

1 stop16h 59m

Lambert-St Louis

Tue 10/14

5:23 am-8:52 pm

1 stop15h 29m

$692

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

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 August 20, 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.

How much does it cost to fly round-trip from Quito to St. Louis?

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 16h 59m. United Airlines provides one of the quickest options available for as low as $692. The distance between Quito and St. Louis is about 2790 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

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 Quito to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Quito to Kansas City flights
Guayaquil to Kansas City flights
Cuenca to Kansas City flights

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.