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Cheap flights from St. Louis to Quito from $679

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Quito departing on 1/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Quito

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
6:00 am - 9:25 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
14h 25m1 stop Atlanta Hartsfield-Jackson
LATAM Airlines Logo
8:55 am - 11:39 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
15h 44m2 stops Miami Atlanta Hartsfield-Jackson
$679LATAM Airlines
Wed, Jan 20 - Tue, Feb 16
American Airlines Logo
7:03 am - 8:16 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 13m1 stop Miami
American Airlines Logo
7:30 am - 10:05 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
15h 35m1 stop Miami
$687American Airlines
Wed, Jan 20 - Tue, Feb 16
United Airlines Logo
11:10 am - 11:25 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
7:00 am - 10:30 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
15h 30m1 stop Houston George Bush Intcntl
$687United Airlines
Mon, Sep 28 - Mon, Oct 5
United Airlines Logo
8:00 am - 11:25 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
15h 25m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
12:35 am - 9:21 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
20h 46m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$692United Airlines
Mon, Sep 28 - Sun, Oct 4
American Airlines Logo
9:33 am - 11:47 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
13h 14m2 stops Philadelphia Miami
American Airlines Logo
7:30 am - 8:18 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
13h 48m2 stops Miami New York LaGuardia
$692American Airlines
Wed, Jan 20 - Tue, Feb 16
United Airlines Logo
11:10 am - 11:25 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
7:00 am - 9:21 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 21m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$692United Airlines
Mon, Sep 28 - Mon, Oct 5
Delta Logo
6:00 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
12h 59m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:59 am - 5:45 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
16h 46m1 stop Atlanta Hartsfield-Jackson
$727Delta
Fri, Sep 11 - Thu, Sep 17
Delta Logo
7:05 am - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
11h 54m1 stop Atlanta Hartsfield-Jackson
Delta Logo
9:00 am - 11:42 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
14h 42m2 stops Miami Atlanta Hartsfield-Jackson
$732Delta
Fri, Sep 11 - Fri, Sep 18
American Airlines Logo
10:38 am - 10:35 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
10h 57m1 stop Miami
American Airlines Logo
12:49 am - 5:24 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
17h 35m1 stop Miami
$760American Airlines
Thu, Dec 3 - Tue, Jan 5
Delta Logo
12:52 pm - 6:59 pmSTL  Lambert-St Louis-UIO Quito Mariscal Sucr
30h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:59 am - 1:23 pmUIO  Quito Mariscal Sucr-STL Lambert-St Louis
12h 24m1 stop Atlanta Hartsfield-Jackson
$772Delta
Tue, Sep 1 - Wed, Sep 16

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LATAM Airlines flights from St. Louis to Quito

Our best LATAM Airlines deals on St. Louis to Quito flight tickets
LATAM Airlines
Jan 20
STL6:00 amLambert-St Louis
14h 25m
1 stop
UIO9:25 pmQuito Mariscal Sucr
Feb 16
UIO8:55 amQuito Mariscal Sucr
15h 44m
2 stops
STL11:39 pmLambert-St Louis
$679
LATAM Airlines
Jan 30
STL6:00 amLambert-St Louis
16h 00m
2 stops
UIO11:00 pmQuito Mariscal Sucr
Feb 3
UIO8:55 amQuito Mariscal Sucr
15h 44m
2 stops
STL11:39 pmLambert-St Louis
$736
LATAM Airlines
Oct 29
STL12:00 pmLambert-St Louis
9h 25m
1 stop
UIO9:25 pmQuito Mariscal Sucr
Nov 1
UIO12:55 amQuito Mariscal Sucr
9h 22m
1 stop
STL9:17 amLambert-St Louis
$761

United Airlines flights from St. Louis to Quito

Our best United Airlines deals on St. Louis to Quito flight tickets
United Airlines
Sep 28
STL11:10 amLambert-St Louis
12h 15m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Oct 5
UIO7:00 amQuito Mariscal Sucr
15h 30m
1 stop
STL10:30 pmLambert-St Louis
$687
United Airlines
Sep 28
STL8:00 amLambert-St Louis
15h 25m
2 stops
UIO11:25 pmQuito Mariscal Sucr
Oct 4
UIO12:35 amQuito Mariscal Sucr
20h 46m
2 stops
STL9:21 pmLambert-St Louis
$692
United Airlines
Aug 31
STL6:15 amLambert-St Louis
17h 10m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Sep 15
UIO12:35 amQuito Mariscal Sucr
9h 35m
1 stop
STL10:10 amLambert-St Louis
$725

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Quito 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, momondo users made 832,500 searches. Data last updated August 17, 2026.
Use the filters below to find and compare flights from St. Louis to Quito that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Wed 1/20

6:00 am-9:25 pm

1 stop14h 25m

Quito Mariscal Sucr

Tue 2/16

8:55 am-11:39 pm

2 stops15h 44m

$679

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Wed 1/20

7:03 am-8:16 pm

1 stop12h 13m

Quito Mariscal Sucr

Tue 2/16

7:30 am-10:05 pm

1 stop15h 35m

$687

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Mon 9/28

11:10 am-11:25 pm

1 stop12h 15m

Quito Mariscal Sucr

Mon 10/5

7:00 am-10:30 pm

1 stop15h 30m

$687

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Mon 9/28

8:00 am-11:25 pm

2 stops15h 25m

Quito Mariscal Sucr

Sun 10/4

12:35 am-9:21 pm

2 stops20h 46m

$692

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Wed 1/20

9:33 am-11:47 pm

2 stops13h 14m

Quito Mariscal Sucr

Tue 2/16

7:30 am-8:18 pm

2 stops13h 48m

$692
Quickest round-trip

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Mon 9/28

11:10 am-11:25 pm

1 stop12h 15m

Quito Mariscal Sucr

Mon 10/5

7:00 am-9:21 pm

2 stops14h 21m

$692

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Fri 9/11

6:00 am-6:59 pm

1 stop12h 59m

Quito Mariscal Sucr

Thu 9/17

12:59 am-5:45 pm

1 stop16h 46m

$727

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Fri 9/11

7:05 am-6:59 pm

1 stop11h 54m

Quito Mariscal Sucr

Fri 9/18

9:00 am-11:42 pm

2 stops14h 42m

$732

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Thu 12/3

10:38 am-10:35 pm

1 stop10h 57m

Quito Mariscal Sucr

Tue 1/5

12:49 am-5:24 pm

1 stop17h 35m

$760

St. LouisQuito

STL Lambert-St Louis - UIO Quito Mariscal Sucr

STLUIO

Lambert-St Louis

Tue 9/1

12:52 pm-6:59 pm

1 stop30h 07m

Quito Mariscal Sucr

Wed 9/16

12:59 am-1:23 pm

1 stop12h 24m

$772

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from St. Louis to Quito

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Can stopping save me money on St. Louis to Quito flights?

You could potentially save up to 17% on your flight if you consider stops on a St. Louis to Quito flight.

When to book flights from St. Louis to Quito

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Quito according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Quito (STL to UIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Quito

Best Price Found

$679

Fastest flight time

8h 19m

Direct flights

None
The best flight deal from St. Louis to Quito found on momondo in the last 72 hours is $679
The fastest flight from St. Louis to Quito takes 8h 19m
There are no direct flights from St. Louis to Quito. There are no popular flight routes from St. Louis to Quito.
Search flight deals

Frequently asked questions about flying from St. Louis to Quito

  • How far is Lambert-St Louis to Quito Mariscal Sucr by plane?

    There are 2783.2 mi between Lambert-St Louis and Quito Mariscal Sucr. Typically, this will take 8h 19m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Quito Mariscal Sucr Airport?

    Prices for flights from Lambert-St Louis Airport to Quito Mariscal Sucr Airport refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Quito Mariscal Sucr Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Quito Mariscal Sucr Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Quito Mariscal Sucr Airport.

  • What documentation or ID do you need to fly to Quito Mariscal Sucr Airport?

    The required travel and health documents for your Quito Mariscal Sucr Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Quito Mariscal Sucr Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from St. Louis to Quito?

Best airlines flying from St. Louis to Quito

Compare and see reviews for airlines that fly from St. Louis to Quito with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $592Free CancellationRating
7.1
11,944 reviews
Search American Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.8
8,503 reviews
Search Delta flights

Traveling to a place near Quito?

Book flights to Quito if you plan to visit one of these locations
Mindo
Otavalo
Ibarra

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Why should I use momondo to find a flight deal from St. Louis to Quito?

Finding the right flight to Quito from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Quito quick and easy, saving you time and money.

Can I find flights from St. Louis to Quito with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Quito from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Quito?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Quito.

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