Cheap flights from Quito to St. Louis from $684

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 2/17. 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

Enter your travel dates to find the best prices.
United Airlines Logo
1:35 am - 9:23 am
UIO
-
STL
8h 48m1 stop
United Airlines Logo
7:45 am - 11:25 pm
STL
-
UIO
39h 40m2 stops
$684United Airlines
Tue, Feb 17 - Mon, Apr 20
American Airlines Logo
12:45 am - 1:54 pm
UIO
-
STL
14h 09m2 stops
American Airlines Logo
9:38 am - 10:45 pm
STL
-
UIO
13h 07m2 stops
$697American Airlines
Tue, Feb 17 - Mon, Apr 20
American Airlines Logo
12:49 am - 9:08 am
UIO
-
STL
9h 19m1 stop
American Airlines Logo
11:19 am - 11:23 pm
STL
-
UIO
11h 04m1 stop
$705American Airlines
Mon, Jan 19 - Sun, Feb 22
American Airlines Logo
12:49 am - 2:57 pm
UIO
-
STL
15h 08m2 stops
American Airlines Logo
11:19 am - 11:23 pm
STL
-
UIO
11h 04m1 stop
$709American Airlines
Tue, Jan 20 - Sun, Mar 1
American Airlines Logo
12:45 am - 10:26 am
UIO
-
STL
10h 41m1 stop
American Airlines Logo
5:05 am - 8:35 pm
STL
-
UIO
14h 30m1 stop
$717American Airlines
Thu, Feb 12 - Sun, Mar 1
American Airlines Logo
12:45 am - 5:05 pm
UIO
-
STL
17h 20m2 stops
American Airlines Logo
6:00 am - 8:35 pm
STL
-
UIO
13h 35m2 stops
$721American Airlines
Thu, Feb 12 - Sun, Mar 1
American Airlines Logo
12:49 am - 3:04 pm
UIO
-
STL
15h 15m2 stops
American Airlines Logo
6:00 am - 8:35 pm
STL
-
UIO
13h 35m2 stops
$733American Airlines
Mon, Jan 19 - Sun, Feb 22
American Airlines Logo
12:45 am - 10:26 am
UIO
-
STL
10h 41m1 stop
American Airlines Logo
7:05 am - 7:34 pm
STL
-
UIO
12h 29m2 stops
$754American Airlines
Wed, Mar 4 - Sun, Mar 15
Delta Logo
7:00 pm - 2:47 pm
UIO
-
STL
20h 47m2 stops
Delta Logo
3:58 pm - 5:17 am
STL
-
UIO
13h 19m2 stops
$756Delta
Thu, Mar 5 - Sun, Mar 15
American Airlines Logo
7:30 am - 10:05 pm
UIO
-
STL
15h 35m1 stop
American Airlines Logo
7:05 am - 7:34 pm
STL
-
UIO
12h 29m2 stops
$757American Airlines
Thu, Mar 5 - Sun, Mar 15

United Airlines flights from Quito to St. Louis

Our best United Airlines deals on Quito to St. Louis flight tickets
United Airlines
Feb 17
UIO1:35 amQuito Mariscal Sucr
8h 48m
1 stop
STL9:23 amLambert-St Louis
Apr 20
STL7:45 amLambert-St Louis
39h 40m
2 stops
UIO11:25 pmQuito Mariscal Sucr
United Airlines
Mar 29
UIO12:35 amQuito Mariscal Sucr
21h 44m
1 stop
STL10:19 pmLambert-St Louis
Apr 4
STL4:44 pmLambert-St Louis
30h 41m
1 stop
UIO11:25 pmQuito Mariscal Sucr
United Airlines
Jan 22
UIO1:35 amQuito Mariscal Sucr
8h 47m
1 stop
STL9:22 amLambert-St Louis
Jan 26
STL6:00 amLambert-St Louis
17h 30m
1 stop
UIO12:30 amQuito Mariscal Sucr

American Airlines flights from Quito to St. Louis

Our best American Airlines deals on Quito to St. Louis flight tickets
American Airlines
Feb 17
UIO12:45 amQuito Mariscal Sucr
14h 09m
2 stops
STL1:54 pmLambert-St Louis
Apr 20
STL9:38 amLambert-St Louis
13h 07m
2 stops
UIO10:45 pmQuito Mariscal Sucr
American Airlines
Jan 19
UIO12:49 amQuito Mariscal Sucr
9h 19m
1 stop
STL9:08 amLambert-St Louis
Feb 22
STL11:19 amLambert-St Louis
11h 04m
1 stop
UIO11:23 pmQuito Mariscal Sucr
American Airlines
Jan 20
UIO12:49 amQuito Mariscal Sucr
15h 08m
2 stops
STL2:57 pmLambert-St Louis
Mar 1
STL11:19 amLambert-St Louis
11h 04m
1 stop
UIO11:23 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 December 8, 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

Tue 2/17

1:35 am-9:23 am

1 stop8h 48m

Lambert-St Louis

Mon 4/20

7:45 am-11:25 pm

2 stops39h 40m

$684

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 2/17

12:45 am-1:54 pm

2 stops14h 09m

Lambert-St Louis

Mon 4/20

9:38 am-10:45 pm

2 stops13h 07m

$697

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Mon 1/19

12:49 am-9:08 am

1 stop9h 19m

Lambert-St Louis

Sun 2/22

11:19 am-11:23 pm

1 stop11h 04m

$705

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Tue 1/20

12:49 am-2:57 pm

2 stops15h 08m

Lambert-St Louis

Sun 3/1

11:19 am-11:23 pm

1 stop11h 04m

$709

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 2/12

12:45 am-10:26 am

1 stop10h 41m

Lambert-St Louis

Sun 3/1

5:05 am-8:35 pm

1 stop14h 30m

$717

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 2/12

12:45 am-5:05 pm

2 stops17h 20m

Lambert-St Louis

Sun 3/1

6:00 am-8:35 pm

2 stops13h 35m

$721

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Mon 1/19

12:49 am-3:04 pm

2 stops15h 15m

Lambert-St Louis

Sun 2/22

6:00 am-8:35 pm

2 stops13h 35m

$733

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Wed 3/4

12:45 am-10:26 am

1 stop10h 41m

Lambert-St Louis

Sun 3/15

7:05 am-7:34 pm

2 stops12h 29m

$754

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 3/5

7:00 pm-2:47 pm

2 stops20h 47m

Lambert-St Louis

Sun 3/15

3:58 pm-5:17 am

2 stops13h 19m

$756

QuitoSt. Louis

UIO - STL

UIOSTL

Quito Mariscal Sucr

Thu 3/5

7:30 am-10:05 pm

1 stop15h 35m

Lambert-St Louis

Sun 3/15

7:05 am-7:34 pm

2 stops12h 29m

$757

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

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

Fastest flight time

8h 52m

Direct flights

None
The fastest flight from Quito to St. Louis takes 8h 52m
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 47m.

  • 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
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
Glencoe
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
Wed 1/7
Wed 1/14

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