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Cheap flights from St. Louis to Quito from $618

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 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
10:13 am - 9:35 pm
STL
-
UIO
10h 22m1 stop
LATAM Airlines Logo
7:00 pm - 5:53 pm
UIO
-
STL
22h 53m2 stops
$618LATAM Airlines
Sun, Mar 1 - Mon, Mar 9
Delta Logo
10:13 am - 5:17 am
STL
-
UIO
18h 04m2 stops
Delta Logo
7:00 pm - 4:16 pm
UIO
-
STL
21h 16m2 stops
$619Delta
Sun, Mar 1 - Mon, Mar 9
American Airlines Logo
11:19 am - 8:35 pm
STL
-
UIO
8h 16m1 stop
American Airlines Logo
6:30 am - 9:51 pm
UIO
-
STL
15h 21m1 stop
$625American Airlines
Sun, Mar 1 - Mon, Mar 9
Delta Logo
10:13 am - 5:17 am
STL
-
UIO
18h 04m2 stops
Delta Logo
7:00 pm - 12:58 pm
UIO
-
STL
17h 58m2 stops
$629Delta
Sun, Mar 1 - Sun, Mar 8
Delta Logo
10:13 am - 5:17 am
STL
-
UIO
18h 04m2 stops
Delta Logo
11:45 pm - 11:58 pm
UIO
-
STL
24h 13m1 stop
$634Delta
Sun, Mar 1 - Sun, Mar 8
American Airlines Logo
11:19 am - 8:35 pm
STL
-
UIO
8h 16m1 stop
American Airlines Logo
11:44 pm - 10:32 am
UIO
-
STL
10h 48m1 stop
$635American Airlines
Sun, Mar 1 - Sun, Mar 8
American Airlines Logo
6:00 am - 8:16 pm
STL
-
UIO
13h 16m2 stops
American Airlines Logo
12:45 am - 10:26 am
UIO
-
STL
10h 41m1 stop
$639American Airlines
Sun, Feb 1 - Sat, Feb 21
Delta Logo
9:59 am - 5:17 am
STL
-
UIO
18h 18m2 stops
Delta Logo
7:00 pm - 2:47 pm
UIO
-
STL
20h 47m2 stops
$683Delta
Sun, Feb 1 - Sun, Feb 22
American Airlines Logo
5:05 am - 11:47 pm
STL
-
UIO
17h 42m1 stop
American Airlines Logo
12:45 am - 10:26 am
UIO
-
STL
10h 41m1 stop
$689American Airlines
Sun, Feb 1 - Sat, Feb 21
LATAM Airlines Logo
1:30 pm - 4:43 am
STL
-
UIO
15h 13m2 stops
LATAM Airlines Logo
6:50 pm - 10:45 am
UIO
-
STL
15h 55m2 stops
$693LATAM Airlines
Wed, May 13 - Tue, May 19

LATAM Airlines flights from St. Louis to Quito

Our best LATAM Airlines deals on St. Louis to Quito flight tickets
LATAM Airlines
Mar 1
STL10:13 amLambert-St Louis
10h 22m
1 stop
UIO9:35 pmQuito Mariscal Sucr
Mar 9
UIO7:00 pmQuito Mariscal Sucr
22h 53m
2 stops
STL5:53 pmLambert-St Louis
$618
Find similar
LATAM Airlines
May 13
STL1:30 pmLambert-St Louis
15h 13m
2 stops
UIO4:43 amQuito Mariscal Sucr
May 19
UIO6:50 pmQuito Mariscal Sucr
15h 55m
2 stops
STL10:45 amLambert-St Louis
$693
Find similar
LATAM Airlines
Feb 1
STL3:45 pmLambert-St Louis
36h 32m
2 stops
UIO5:17 amQuito Mariscal Sucr
Feb 22
UIO7:00 pmQuito Mariscal Sucr
23h 42m
2 stops
STL5:42 pmLambert-St Louis
$742
Find similar

Delta flights from St. Louis to Quito

Our best Delta deals on St. Louis to Quito flight tickets
Delta
Mar 1
STL10:13 amLambert-St Louis
18h 04m
2 stops
UIO5:17 amQuito Mariscal Sucr
Mar 9
UIO7:00 pmQuito Mariscal Sucr
21h 16m
2 stops
STL4:16 pmLambert-St Louis
$619
Find similar
Delta
Mar 1
STL10:13 amLambert-St Louis
18h 04m
2 stops
UIO5:17 amQuito Mariscal Sucr
Mar 8
UIO7:00 pmQuito Mariscal Sucr
17h 58m
2 stops
STL12:58 pmLambert-St Louis
$629
Find similar
Delta
Mar 1
STL10:13 amLambert-St Louis
18h 04m
2 stops
UIO5:17 amQuito Mariscal Sucr
Mar 8
UIO11:45 pmQuito Mariscal Sucr
24h 13m
1 stop
STL11:58 pmLambert-St Louis
$634
Find similar

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 December 23, 2025.
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

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/1

10:13 am-9:35 pm

1 stop10h 22m

Quito Mariscal Sucr

Mon 3/9

7:00 pm-5:53 pm

2 stops22h 53m

$618

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/1

10:13 am-5:17 am

2 stops18h 04m

Quito Mariscal Sucr

Mon 3/9

7:00 pm-4:16 pm

2 stops21h 16m

$619

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/1

11:19 am-8:35 pm

1 stop8h 16m

Quito Mariscal Sucr

Mon 3/9

6:30 am-9:51 pm

1 stop15h 21m

$625

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/1

10:13 am-5:17 am

2 stops18h 04m

Quito Mariscal Sucr

Sun 3/8

7:00 pm-12:58 pm

2 stops17h 58m

$629

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/1

10:13 am-5:17 am

2 stops18h 04m

Quito Mariscal Sucr

Sun 3/8

11:45 pm-11:58 pm

1 stop24h 13m

$634

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 3/1

11:19 am-8:35 pm

1 stop8h 16m

Quito Mariscal Sucr

Sun 3/8

11:44 pm-10:32 am

1 stop10h 48m

$635

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

6:00 am-8:16 pm

2 stops13h 16m

Quito Mariscal Sucr

Sat 2/21

12:45 am-10:26 am

1 stop10h 41m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

9:59 am-5:17 am

2 stops18h 18m

Quito Mariscal Sucr

Sun 2/22

7:00 pm-2:47 pm

2 stops20h 47m

$683

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 2/1

5:05 am-11:47 pm

1 stop17h 42m

Quito Mariscal Sucr

Sat 2/21

12:45 am-10:26 am

1 stop10h 41m

$689

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Wed 5/13

1:30 pm-4:43 am

2 stops15h 13m

Quito Mariscal Sucr

Tue 5/19

6:50 pm-10:45 am

2 stops15h 55m

$693

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Quito from

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

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Quito?

What is the cheapest day to depart on your flight to Quito?

The cheapest day to depart from St. Louis to Quito is on a Tuesday. Travelers who choose to depart for Quito on a Tuesday will often find tickets for as low as $549. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Quito on Friday is $862.

What is the cheapest time of day to depart on your flight to Quito?

Our most recent data shows that the best time of day to fly to Quito is in the afternoon. Flights from St. Louis to Quito during this time can be as low as $656. Try not to purchase tickets in the morning because they tend to be around $689. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fastest flight time

7h 35m

Direct flights

None
The fastest flight from St. Louis to Quito takes 7h 35m
There are no direct flights from St. Louis to Quito. There are no popular flight routes from St. Louis to Quito.
Search flight deals

  • 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 7h 35m 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 $625Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,109 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,015 reviews
Search Delta flights
LATAM AirlinesPriceFrom $664Free CancellationRating
7.5
1,894 reviews
Search LATAM Airlines flights

Traveling to a place near Quito?

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

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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.

I’m not ready to book a flight from St. Louis to Quito right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Quito, momondo offers a useful price alert feature which will track prices for flights to Quito from St. Louis and alert you when they change.

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