STL - UIO

$288 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 9/16. 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

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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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

Tue, Sep 16 - Thu, Sep 25
Delta Logo
9:19 am - 7:30 pmSTL-UIO
10h 11m1 stop
Delta Logo
11:20 pm - 4:05 pmUIO-STL
16h 45m1 stop
$614Delta
Find Deal
Tue, Sep 16 - Wed, Sep 24
United Airlines Logo
6:35 am - 11:25 pmSTL-UIO
16h 50m2 stops
United Airlines Logo
12:35 am - 6:57 pmUIO-STL
18h 22m1 stop
$619United Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
LATAM Airlines Logo
7:00 am - 8:00 pmSTL-UIO
13h 00m1 stop
LATAM Airlines Logo
11:20 pm - 8:14 amUIO-STL
8h 54m1 stop
$634LATAM Airlines
Find Deal
Tue, Sep 16 - Wed, Sep 24
United Airlines Logo
6:35 am - 11:25 pmSTL-UIO
16h 50m2 stops
United Airlines Logo
12:35 am - 10:49 amUIO-STL
34h 14m2 stops
$635United Airlines
Find Deal
Sat, Sep 6 - Fri, Sep 12
United Airlines Logo
4:32 pm - 11:25 pmSTL-UIO
30h 53m1 stop
United Airlines Logo
12:35 am - 2:19 pmUIO-STL
13h 44m2 stops
$702United Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
LATAM Airlines Logo
10:15 am - 11:40 amSTL-UIO
25h 25m2 stops
LATAM Airlines Logo
11:20 pm - 9:59 amUIO-STL
10h 39m1 stop
$714LATAM Airlines
Find Deal
Sun, Dec 14 - Wed, Dec 17
American Airlines Logo
7:33 am - 11:59 pmSTL-UIO
15h 26m2 stops
American Airlines Logo
12:40 am - 5:48 pmUIO-STL
18h 08m1 stop
$847American Airlines
Find Deal
Sun, Dec 14 - Thu, Dec 18
Delta Logo
6:00 am - 5:10 amSTL-UIO
22h 10m2 stops
Delta Logo
7:00 pm - 10:46 amUIO-STL
16h 46m2 stops
$852Delta
Find Deal
Sun, Dec 14 - Wed, Dec 17
American Airlines Logo
5:25 am - 9:50 pmSTL-UIO
15h 25m1 stop
American Airlines Logo
12:40 am - 5:48 pmUIO-STL
18h 08m1 stop
$920American Airlines
Find Deal
Sat, Sep 6 - Fri, Sep 12
Air Canada Logo
1:30 pm - 8:35 amSTL-UIO
19h 05m2 stops
Air Canada Logo
1:40 am - 7:57 pmUIO-STL
18h 17m2 stops
$2,120Air Canada
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.

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.

What is the cheapest month to fly from St. Louis to Quito?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Quito, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Quito is October, where tickets cost $571 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $1,233 and $1,230 respectively.

Good to know

Low seasonOctober
Cheapest flight$288
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 49% 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 $288 for a one-way ticket and $614 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Quito, with Star Alliance 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 $759 and an overall rating of 8.0, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $799 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.
8.0
DeltaOverall score based on 7980 reviews
7.9Entertainment
7.9Comfort
8.2Boarding
7.3Food
8.5Crew
Airline reviews

Delayed and took off even later than the scheduled delay time

8.0 ExcellentAnonymous, Jul 2025DTW - SEA
Read more Delta reviews

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Only issue was with seating. The economy fare we purchased did say there was no guarantee the three people in our party would be seated together, and we were not. At the gate, the agent told us more specifically, the fare we purchased meant we would be seated in middle seats only. This should just be made more obvious.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

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

Wider seats, better seat cushions, (I felt like there was a board I was sitting on). I had the chicken to eat but It neither tasted nor looked like chicken. The fruit was good.

I was in the last row and they sent me to check in my luggage last minute after boarding. I had to go through the crowd.

It was good, however the airplane was really cold. We received snacks and the crew was friendly.

Delta has an outstanding service. They are courteous and punctual most of the time. The flight departed a half hour late but we arrived 15 minutes early.

Change of gate in Santiago devolved into half plus hour delay and a really tight connection in Lima

Although the flight is goof and the crew is good, the way the airline charges you for every service is ridiculous.

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

The plane was broken so we had to change planes.

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

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

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