Cheap flights from Quito to St. Louis from $704

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Quito to St. Louis departing on 1/19. 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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Cheap round-trip flights

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United Airlines Logo
1:35 am - 9:13 pmUIO-STL
20h 38m2 stops
United Airlines Logo
7:41 am - 12:30 amSTL-UIO
39h 49m2 stops
$704United Airlines
Find Deal
Mon, Jan 19 - Sun, Feb 22
American Airlines Logo
12:49 am - 9:08 amUIO-STL
9h 19m1 stop
American Airlines Logo
11:30 am - 12:10 amSTL-UIO
11h 40m1 stop
$705American Airlines
Find Deal
Tue, Jan 20 - Sun, Mar 1
United Airlines Logo
1:35 am - 3:39 pmUIO-STL
15h 04m1 stop
United Airlines Logo
4:39 pm - 12:30 amSTL-UIO
30h 51m1 stop
$708United Airlines
Find Deal
Fri, Jan 16 - Sat, Feb 28
American Airlines Logo
12:49 am - 9:08 amUIO-STL
9h 19m1 stop
American Airlines Logo
9:39 am - 12:10 amSTL-UIO
13h 31m2 stops
$709American Airlines
Find Deal
Tue, Jan 20 - Sun, Mar 1
LATAM Airlines Logo
7:00 pm - 11:50 amUIO-STL
17h 50m2 stops
LATAM Airlines Logo
10:00 am - 8:00 pmSTL-UIO
9h 00m1 stop
$739LATAM Airlines
Find Deal
Sat, Jan 17 - Sat, Feb 28
Delta Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
Delta Logo
6:00 am - 5:17 amSTL-UIO
22h 17m2 stops
$756Delta
Find Deal
Sun, Feb 1 - Fri, Feb 27
Delta Logo
11:45 pm - 9:04 amUIO-STL
10h 19m1 stop
Delta Logo
10:00 am - 8:00 pmSTL-UIO
9h 00m1 stop
$783Delta
Find Deal
Sat, Jan 17 - Sat, Feb 28
LATAM Airlines Logo
7:00 pm - 10:45 amUIO-STL
16h 45m2 stops
LATAM Airlines Logo
6:00 am - 9:09 pmSTL-UIO
14h 09m1 stop
$806LATAM Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 29
Multiple Airlines Logo
12:55 am - 9:07 amUIO-STL
33h 12m2 stops
Multiple Airlines Logo
3:40 pm - 11:45 amSTL-UIO
43h 05m2 stops
$910Multiple Airlines
Find Deal
Thu, Nov 13 - Tue, Dec 23
Multiple Airlines Logo
9:11 am - 9:07 amUIO-STL
48h 56m2 stops
Multiple Airlines Logo
5:33 pm - 9:09 pmSTL-UIO
26h 36m1 stop
$924Multiple Airlines
Find Deal
Fri, Nov 14 - Tue, Dec 23

American Airlines flights from Quito to St. Louis

Our best American Airlines deals on Quito to St. Louis flight tickets
American Airlines
Jan 20
UIO12:49 amQuito Mariscal Sucr
9h 19m
1 stop
STL9:08 amLambert-St Louis
Mar 1
STL11:30 amLambert-St Louis
11h 40m
1 stop
UIO12:10 amQuito Mariscal Sucr
American Airlines
Jan 20
UIO12:49 amQuito Mariscal Sucr
9h 19m
1 stop
STL9:08 amLambert-St Louis
Mar 1
STL9:39 amLambert-St Louis
13h 31m
2 stops
UIO12:10 amQuito Mariscal Sucr
American Airlines
Feb 13
UIO6:40 amQuito Mariscal Sucr
16h 04m
2 stops
STL9:44 pmLambert-St Louis
Mar 1
STL7:29 amLambert-St Louis
13h 21m
2 stops
UIO9:50 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
Jan 19
UIO1:35 amQuito Mariscal Sucr
20h 38m
2 stops
STL9:13 pmLambert-St Louis
Feb 22
STL7:41 amLambert-St Louis
39h 49m
2 stops
UIO12:30 amQuito Mariscal Sucr
United Airlines
Jan 16
UIO1:35 amQuito Mariscal Sucr
15h 04m
1 stop
STL3:39 pmLambert-St Louis
Feb 28
STL4:39 pmLambert-St Louis
30h 51m
1 stop
UIO12:30 amQuito Mariscal Sucr
United Airlines
Feb 12
UIO1:35 amQuito Mariscal Sucr
22h 21m
2 stops
STL10:56 pmLambert-St Louis
Mar 1
STL7:41 amLambert-St Louis
39h 49m
2 stops
UIO12:30 amQuito 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 October 16, 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

Mon 1/19

1:35 am-9:13 pm

2 stops20h 38m

Lambert-St Louis

Sun 2/22

7:41 am-12:30 am

2 stops39h 49m

$704

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 1/20

12:49 am-9:08 am

1 stop9h 19m

Lambert-St Louis

Sun 3/1

11:30 am-12:10 am

1 stop11h 40m

$705

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Fri 1/16

1:35 am-3:39 pm

1 stop15h 04m

Lambert-St Louis

Sat 2/28

4:39 pm-12:30 am

1 stop30h 51m

$708

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 1/20

12:49 am-9:08 am

1 stop9h 19m

Lambert-St Louis

Sun 3/1

9:39 am-12:10 am

2 stops13h 31m

$709

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Sat 1/17

7:00 pm-11:50 am

2 stops17h 50m

Lambert-St Louis

Sat 2/28

10:00 am-8:00 pm

1 stop9h 00m

$739

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Sun 2/1

7:00 pm-10:50 am

2 stops16h 50m

Lambert-St Louis

Fri 2/27

6:00 am-5:17 am

2 stops22h 17m

$756

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Sat 1/17

11:45 pm-9:04 am

1 stop10h 19m

Lambert-St Louis

Sat 2/28

10:00 am-8:00 pm

1 stop9h 00m

$783

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 12/3

7:00 pm-10:45 am

2 stops16h 45m

Lambert-St Louis

Mon 12/29

6:00 am-9:09 pm

1 stop14h 09m

$806

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 11/13

12:55 am-9:07 am

2 stops33h 12m

Lambert-St Louis

Tue 12/23

3:40 pm-11:45 am

2 stops43h 05m

$910

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Fri 11/14

9:11 am-9:07 am

2 stops48h 56m

Lambert-St Louis

Tue 12/23

5:33 pm-9:09 pm

1 stop26h 36m

$924

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 month to fly to St. Louis?

In general, May is the cheapest month to fly from Quito to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $683. The month of November is another great option to travel to St. Louis, with average flight prices from Quito averaging around $692.

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

Direct flights

None
There are no direct flights from Quito to St. Louis. There are no popular flight routes from Quito to St. Louis.
  • 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 8h 33m.

  • 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Collinsville
Fenton
St. Peters
Alton
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
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.

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1 adult
Sat 11/15
Sat 11/22

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