STL - UIO

$395 Find Cheap Flights from St. Louis to Quito

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Quito departing on 3/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Quito

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Quito, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Quito, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$616
Typical prices: $719-$892
LATAM Airlines
Sun 2/1Sun 2/22
STL - UIO • 1 stop
Cheapest one-way
$395
Typical prices: $334-$448
LATAM Airlines
Fri 3/13
STL - UIO • 2 stops
Top airlines
LATAM Airlines
Cheapest • from $616 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
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+1
Airline reviews
Airline reviews
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Quito (STL-UIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Quito that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Quito

Sun, Feb 1 - Sun, Feb 22
LATAM Airlines Logo
6:00 am - 9:35 pmSTL-UIO
14h 35m1 stop
LATAM Airlines Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$616LATAM Airlines
Find Deal
Sun, Feb 1 - Sun, Feb 22
Delta Logo
7:10 am - 5:17 amSTL-UIO
21h 07m2 stops
Delta Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$629Delta
Find Deal
Sun, Feb 1 - Sun, Feb 22
LATAM Airlines Logo
6:00 am - 9:35 pmSTL-UIO
14h 35m1 stop
LATAM Airlines Logo
7:00 pm - 6:04 pmUIO-STL
24h 04m2 stops
$639LATAM Airlines
Find Deal
Sun, Feb 1 - Sun, Feb 22
LATAM Airlines Logo
6:00 am - 9:35 pmSTL-UIO
14h 35m1 stop
LATAM Airlines Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$649LATAM Airlines
Find Deal
Sun, Feb 1 - Sun, Feb 22
Delta Logo
7:10 am - 5:17 amSTL-UIO
21h 07m2 stops
Delta Logo
7:00 pm - 10:50 amUIO-STL
16h 50m2 stops
$666Delta
Find Deal
Mon, Dec 15 - Mon, Dec 29
United Airlines Logo
11:10 am - 12:30 amSTL-UIO
12h 20m1 stop
United Airlines Logo
8:00 am - 9:55 pmUIO-STL
14h 55m1 stop
$669United Airlines
Find Deal
Mon, Dec 15 - Mon, Dec 29
United Airlines Logo
11:10 am - 12:30 amSTL-UIO
12h 20m1 stop
United Airlines Logo
8:00 am - 12:27 pmUIO-STL
29h 27m2 stops
$673United Airlines
Find Deal
Mon, Dec 15 - Sat, Dec 27
United Airlines Logo
11:10 am - 12:30 amSTL-UIO
12h 20m1 stop
United Airlines Logo
1:35 am - 9:49 amUIO-STL
9h 14m1 stop
$679United Airlines
Find Deal
Sun, Dec 14 - Wed, Dec 17
American Airlines Logo
7:12 am - 11:02 pmSTL-UIO
14h 50m2 stops
American Airlines Logo
12:54 am - 5:10 pmUIO-STL
17h 16m2 stops
$835American Airlines
Find Deal
Sun, Dec 14 - Wed, Dec 17
American Airlines Logo
5:02 am - 7:45 pmSTL-UIO
13h 43m2 stops
American Airlines Logo
12:54 am - 5:24 pmUIO-STL
17h 30m2 stops
$925American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Quito flights

Get data-powered insights and trends into flights from St. Louis to Quito to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Quito?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Quito departing in February.

What’s the cheapest day of the week to fly from St. Louis to Quito?

The average price of all round-trip flights from St. Louis to Quito clicked on KAYAK for each day over the last 12 months.

For St. Louis to Quito, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Quito back to St. Louis, the best deals are generally found on Wednesday, with Sunday being the most expensive.

Good to know

Cheapest flight$395
Most popular time to fly with an average 46% increase in price.
Flight from St. Louis to Quito

When to book flights from St. Louis to Quito

Are your dates flexible? Find out the best times to travel from St. Louis to Quito based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Quito

  • What is the cheapest flight from St. Louis to Quito?

    In the last 3 days, the lowest price for a flight from St. Louis to Quito was $395 for a one-way ticket and $616 for a round-trip.

  • Do I need a passport to fly between St. Louis and Quito?

    Yes, you’ll need a passport to travel to Quito from St. Louis.

  • Which airports will I be using when flying from St. Louis to Quito?

    On your way to Quito, you’ll fly out from Lambert-St Louis. You’ll be landing at Quito Mariscal Sucr.

  • Which aircraft models fly most regularly from St. Louis to Quito?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Quito?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between St. Louis and Quito, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Quito, Delta or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Quito are Delta and LATAM Airlines. With an average price for the route of $764 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $917 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from St. Louis to Quito?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Quito.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Quito?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Quito from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Quito?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Quito with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and UIO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Quito?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Quito from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from St. Louis to Quito

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Quito. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Quito? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7993 reviews
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

The plane broke down at the Lima stopover and they offered to put me on a flight the be t day but I had to be back in LA that morning and so I had to buy another ticket from Avianca and United for $2k I asked LATAM for compensation and received none. Very bad experience

Poor handling of carry on luggage. We had a 8 hour stop in Santiago, are over 70 and, in spite of paying full fare they wanted to send carry on to luggage hold. No empathy. We had to show that several group 4/5 passengers were not sending their carry ons before they finally let Is keep them. Very poor .

I’m entitled to a refund per LATAM due to the mid flight itinerary change and being stuck in São Paulo for 24 hours and needing to get a hotel. The airline was dismissive and of no help.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

It’s a delta flight operated by LATAM. The whole ticket sale is a mess, delta changed my flight but didn’t update it in LATAM system, I couldn’t get my boarding pass, it took me hours to resolve this issue with delta. I had to change my travel plan. No apology from Delta even though it’s their fault.

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Where the plane landed and the next grate to get to is a LONG LONG LONG walk again if one is not fit and healthy with no carts to assist. It sucks

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

Delayed delayed delayed and no offer for food or vouchers

Disliked having to wait a little longer to disembark from the plan when we landed in London

Everything you need to know for your flight from St. Louis to Quito

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