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Cheap flights from St. Louis to Quito from $614

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 9/25. 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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Find the cheapest flights from St. Louis to Quito (STL-UIO)

Cheap round-trip flights

United Airlines Logo
6:15 am - 11:25 pmSTL-UIO
17h 10m1 stop
United Airlines Logo
12:35 am - 6:57 pmUIO-STL
18h 22m1 stop
$614United Airlines
Find Deal
Thu, Sep 25 - Wed, Oct 1
United Airlines Logo
6:15 am - 11:25 pmSTL-UIO
17h 10m1 stop
United Airlines Logo
12:35 am - 2:27 pmUIO-STL
13h 52m2 stops
$619United Airlines
Find Deal
Thu, Sep 25 - Wed, Oct 1
United Airlines Logo
8:20 am - 11:45 pmSTL-UIO
15h 25m1 stop
United Airlines Logo
1:35 am - 10:39 amUIO-STL
10h 04m1 stop
$624United Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 11
LATAM Airlines Logo
6:00 am - 11:00 pmSTL-UIO
17h 00m2 stops
LATAM Airlines Logo
6:45 pm - 11:40 pmUIO-STL
29h 55m2 stops
$634LATAM Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 12
Delta Logo
6:00 am - 5:17 amSTL-UIO
22h 17m2 stops
Delta Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$639Delta
Find Deal
Mon, Feb 2 - Sat, Feb 21
LATAM Airlines Logo
6:01 am - 11:40 amSTL-UIO
29h 39m2 stops
LATAM Airlines Logo
7:09 am - 11:24 pmUIO-STL
16h 15m2 stops
$670LATAM Airlines
Find Deal
Thu, Sep 25 - Thu, Oct 2
American Airlines Logo
5:23 am - 8:52 pmSTL-UIO
15h 29m1 stop
American Airlines Logo
8:27 am - 10:27 pmUIO-STL
15h 00m1 stop
$735American Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 12
American Airlines Logo
6:00 am - 8:52 pmSTL-UIO
14h 52m2 stops
American Airlines Logo
8:27 am - 9:17 pmUIO-STL
13h 50m2 stops
$740American Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 12
Delta Logo
7:05 pm - 8:00 pmSTL-UIO
23h 55m1 stop
Delta Logo
7:00 pm - 12:57 pmUIO-STL
18h 57m2 stops
$822Delta
Find Deal
Sun, Dec 14 - Thu, Dec 18
Logo
4:05 pm - 8:55 amSTL-UIO
15h 50m2 stops
Logo
4:00 am - 11:08 pmUIO-STL
44h 08m3 stops
$7,239
Find Deal
Mon, Feb 2 - Fri, Feb 20

LATAM Airlines flights from St. Louis to Quito

Our best LATAM Airlines deals on St. Louis to Quito flight tickets
LATAM Airlines
Nov 1
STL6:00 amLambert-St Louis
17h 00m
2 stops
UIO11:00 pmQuito Mariscal Sucr
Nov 12
UIO6:45 pmQuito Mariscal Sucr
29h 55m
2 stops
STL11:40 pmLambert-St Louis
$634
Find similar
LATAM Airlines
Sep 25
STL6:01 amLambert-St Louis
29h 39m
2 stops
UIO11:40 amQuito Mariscal Sucr
Oct 2
UIO7:09 amQuito Mariscal Sucr
16h 15m
2 stops
STL11:24 pmLambert-St Louis
$670
Find similar
LATAM Airlines
Nov 1
STL1:30 pmLambert-St Louis
29h 25m
1 stop
UIO6:55 pmQuito Mariscal Sucr
Nov 12
UIO6:45 pmQuito Mariscal Sucr
29h 55m
2 stops
STL11:40 pmLambert-St Louis
$722
Find similar

United Airlines flights from St. Louis to Quito

Our best United Airlines deals on St. Louis to Quito flight tickets
United Airlines
Sep 25
STL6:15 amLambert-St Louis
17h 10m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Oct 1
UIO12:35 amQuito Mariscal Sucr
18h 22m
1 stop
STL6:57 pmLambert-St Louis
$614
Find similar
United Airlines
Sep 25
STL6:15 amLambert-St Louis
17h 10m
1 stop
UIO11:25 pmQuito Mariscal Sucr
Oct 1
UIO12:35 amQuito Mariscal Sucr
13h 52m
2 stops
STL2:27 pmLambert-St Louis
$619
Find similar
United Airlines
Nov 1
STL8:20 amLambert-St Louis
15h 25m
1 stop
UIO11:45 pmQuito Mariscal Sucr
Nov 11
UIO1:35 amQuito Mariscal Sucr
10h 04m
1 stop
STL10:39 amLambert-St Louis
$624
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 August 28, 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

Thu 9/25

6:15 am-11:25 pm

1 stop17h 10m

Quito Mariscal Sucr

Wed 10/1

12:35 am-6:57 pm

1 stop18h 22m

$614

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 9/25

6:15 am-11:25 pm

1 stop17h 10m

Quito Mariscal Sucr

Wed 10/1

12:35 am-2:27 pm

2 stops13h 52m

$619

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

8:20 am-11:45 pm

1 stop15h 25m

Quito Mariscal Sucr

Tue 11/11

1:35 am-10:39 am

1 stop10h 04m

$624

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

6:00 am-11:00 pm

2 stops17h 00m

Quito Mariscal Sucr

Wed 11/12

6:45 pm-11:40 pm

2 stops29h 55m

$634

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/2

6:00 am-5:17 am

2 stops22h 17m

Quito Mariscal Sucr

Sat 2/21

7:00 pm-10:50 am

2 stops16h 50m

$639

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Thu 9/25

6:01 am-11:40 am

2 stops29h 39m

Quito Mariscal Sucr

Thu 10/2

7:09 am-11:24 pm

2 stops16h 15m

$670

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

5:23 am-8:52 pm

1 stop15h 29m

Quito Mariscal Sucr

Wed 11/12

8:27 am-10:27 pm

1 stop15h 00m

$735

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sat 11/1

6:00 am-8:52 pm

2 stops14h 52m

Quito Mariscal Sucr

Wed 11/12

8:27 am-9:17 pm

2 stops13h 50m

$740

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Sun 12/14

7:05 pm-8:00 pm

1 stop23h 55m

Quito Mariscal Sucr

Thu 12/18

7:00 pm-12:57 pm

2 stops18h 57m

$822

St. LouisQuito

STL - UIO

STLUIO

Lambert-St Louis

Mon 2/2

4:05 pm-8:55 am

2 stops15h 50m

Quito Mariscal Sucr

Fri 2/20

4:00 am-11:08 pm

3 stops44h 08m

$7,239

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 cheapest month to fly to Quito?

The cheapest month to fly to Quito from St. Louis is in October. Flight prices, which tend to average around $571, are often lower during this time because this is during the off-season. If you aren’t able to travel to Quito during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $648.

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

Direct flights

None
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 8h 34m 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
United AirlinesPriceFrom $451Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $571Free CancellationRating
7.5
1,842 reviews
Search LATAM Airlines flights
DeltaPriceFrom $595Free CancellationRating
7.9
7,977 reviews
Search Delta flights
American AirlinesPriceFrom $625Free CancellationRating
7.2
10,000 reviews
Search American 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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