Cheap flights from Quito to St. Louis from $368

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Quito to St. Louis departing on 9/12. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Quito to St. Louis

Cheap round-trip flights

American Airlines Logo
7:00 am - 11:59 pmUIO-STL
16h 59m1 stop
American Airlines Logo
5:23 am - 8:52 pmSTL-UIO
15h 29m1 stop
$692American Airlines
Find Deal
Thu, Sep 25 - Tue, Oct 14
American Airlines Logo
7:00 am - 10:22 pmUIO-STL
15h 22m2 stops
American Airlines Logo
9:43 am - 8:52 pmSTL-UIO
11h 09m2 stops
$697American Airlines
Find Deal
Thu, Sep 25 - Tue, Oct 14
United Airlines Logo
12:35 am - 10:00 pmUIO-STL
21h 25m1 stop
United Airlines Logo
11:06 am - 11:25 pmSTL-UIO
12h 19m1 stop
$710United Airlines
Find Deal
Wed, Sep 24 - Tue, Oct 14
United Airlines Logo
12:35 am - 10:00 pmUIO-STL
21h 25m1 stop
United Airlines Logo
6:30 am - 11:25 pmSTL-UIO
16h 55m2 stops
$722United Airlines
Find Deal
Wed, Sep 24 - Tue, Oct 14
United Airlines Logo
12:35 am - 10:00 pmUIO-STL
21h 25m1 stop
United Airlines Logo
6:30 am - 11:25 pmSTL-UIO
16h 55m2 stops
$767United Airlines
Find Deal
Wed, Sep 24 - Tue, Oct 14
United Airlines Logo
12:35 am - 12:28 pmUIO-STL
35h 53m2 stops
United Airlines Logo
6:30 am - 11:25 pmSTL-UIO
16h 55m2 stops
$774United Airlines
Find Deal
Wed, Sep 24 - Tue, Oct 14
 Logo
7:09 am - 1:07 pmUIO-STL
29h 58m2 stops
 Logo
7:55 pm - 11:40 amSTL-UIO
39h 45m3 stops
Wed, Aug 20 - Sat, Sep 6
 Logo
2:05 pm - 7:38 pmUIO-STL
29h 33m3 stops
 Logo
1:30 pm - 5:00 pmSTL-UIO
27h 30m3 stops
$1,112
Find Deal
Fri, Sep 12 - Mon, Sep 15
LATAM Airlines Logo
7:00 pm - 6:04 pmUIO-STL
24h 04m2 stops
LATAM Airlines Logo
6:00 am - 5:10 amSTL-UIO
22h 10m2 stops
$1,225LATAM Airlines
Find Deal
Mon, Jan 5 - Sat, Jan 10
LATAM Airlines Logo
7:00 pm - 6:04 pmUIO-STL
24h 04m2 stops
LATAM Airlines Logo
10:00 am - 8:00 pmSTL-UIO
9h 00m1 stop
$1,267LATAM Airlines
Find Deal
Mon, Jan 5 - Sat, Jan 10

American Airlines flights from Quito to St. Louis

Our best American Airlines deals on Quito to St. Louis flight tickets
American Airlines
Sep 25
UIO7:00 amQuito Mariscal Sucr
16h 59m
1 stop
STL11:59 pmLambert-St Louis
Oct 14
STL5:23 amLambert-St Louis
15h 29m
1 stop
UIO8:52 pmQuito Mariscal Sucr
American Airlines
Sep 25
UIO7:00 amQuito Mariscal Sucr
15h 22m
2 stops
STL10:22 pmLambert-St Louis
Oct 14
STL9:43 amLambert-St Louis
11h 09m
2 stops
UIO8:52 pmQuito Mariscal Sucr
American Airlines
Sep 12
UIO7:50 amQuito Mariscal Sucr
16h 09m
1 stop
STL11:59 pmLambert-St Louis
Sep 15
STL6:00 amLambert-St Louis
13h 19m
2 stops
UIO7:19 pmQuito Mariscal Sucr

United Airlines flights from Quito to St. Louis

Our best United Airlines deals on Quito to St. Louis flight tickets
United Airlines
Sep 24
UIO12:35 amQuito Mariscal Sucr
21h 25m
1 stop
STL10:00 pmLambert-St Louis
Oct 14
STL11:06 amLambert-St Louis
12h 19m
1 stop
UIO11:25 pmQuito Mariscal Sucr
United Airlines
Sep 24
UIO12:35 amQuito Mariscal Sucr
21h 25m
1 stop
STL10:00 pmLambert-St Louis
Oct 14
STL6:30 amLambert-St Louis
16h 55m
2 stops
UIO11:25 pmQuito Mariscal Sucr
United Airlines
Sep 24
UIO12:35 amQuito Mariscal Sucr
21h 25m
1 stop
STL10:00 pmLambert-St Louis
Oct 14
STL6:30 amLambert-St Louis
16h 55m
2 stops
UIO11:25 pmQuito Mariscal Sucr

momondo 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, momondo users made 832,500 searches. Data last updated August 6, 2025.
Use the filters below to find and compare flights from Quito to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 9/25

7:00 am-10:22 pm

2 stops15h 22m

Lambert-St Louis

Tue 10/14

9:43 am-8:52 pm

2 stops11h 09m

$697

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 9/24

12:35 am-10:00 pm

1 stop21h 25m

Lambert-St Louis

Tue 10/14

11:06 am-11:25 pm

1 stop12h 19m

$710

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 9/24

12:35 am-10:00 pm

1 stop21h 25m

Lambert-St Louis

Tue 10/14

6:30 am-11:25 pm

2 stops16h 55m

$722

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 9/24

12:35 am-10:00 pm

1 stop21h 25m

Lambert-St Louis

Tue 10/14

6:30 am-11:25 pm

2 stops16h 55m

$767

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 9/24

12:35 am-12:28 pm

2 stops35h 53m

Lambert-St Louis

Tue 10/14

6:30 am-11:25 pm

2 stops16h 55m

$774

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 8/20

7:09 am-1:07 pm

2 stops29h 58m

Lambert-St Louis

Sat 9/6

7:55 pm-11:40 am

3 stops39h 45m

$835

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Fri 9/12

2:05 pm-7:38 pm

3 stops29h 33m

Lambert-St Louis

Mon 9/15

1:30 pm-5:00 pm

3 stops27h 30m

$1,112

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Mon 1/5

7:00 pm-6:04 pm

2 stops24h 04m

Lambert-St Louis

Sat 1/10

6:00 am-5:10 am

2 stops22h 10m

$1,225

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Mon 1/5

7:00 pm-6:04 pm

2 stops24h 04m

Lambert-St Louis

Sat 1/10

10:00 am-8:00 pm

1 stop9h 00m

$1,267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

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

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 day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $657. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $799. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Quito in the morning is the least expensive time of day to depart. momondo users have found prices as low as $624 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $740 per ticket.

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

You could potentially save up to 16% on your flight if you consider stops on a Quito to St. Louis flight.

When to book flights from Quito to St. Louis

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

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

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

Best Price Found

$368

Fastest flight time

9h 17m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Quito in the past 72 hours is $368. The best round-trip flight deal from Quito to St. Louis found on momondo in the last 72 hours is $692.
The fastest flight from Quito to St. Louis takes 9h 17m
There are no direct flights from Quito to St. Louis. Popular non-direct route for this connection is Quito Mariscal Sucr Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
  • How far is Quito Mariscal Sucr to Lambert-St Louis by plane?

    A flight from Quito Mariscal Sucr to Lambert-St Louis will travel around 2783.2 mi. In terms of flight time, this usually takes a little over 11h 08m.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Quito Mariscal Sucr Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
Fenton
O'Fallon
Collinsville
Alton
Wentzville
St. Peters
Farmington
Festus
Glencoe
Eureka
Edwardsville
Clayton
Litchfield
Shrewsbury

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Quito to St. Louis for you.

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

Yes. All flights to St. Louis from Quito on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Quito to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to St. Louis from Quito are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/11
Mon 8/18

Find better results for your trip to the United States