$333 Find Cheap Flights from St. Louis to Ecuador

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 Ecuador departing on 6/22. 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

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Flight Deals

Cheap Flights from St. Louis to Ecuador

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Quito
Quito2 stops$709
Guayaquil
Guayaquil1 stop$700
Baltra
Baltra2 stops$1,758
San Cristobal
San Cristobal3 stops$3,254
Quito
Quito2 stops$709
Guayaquil
Guayaquil1 stop$700
Baltra
Baltra2 stops$1,758
San Cristobal
San Cristobal3 stops$3,254

Book Cheap St. Louis to Ecuador Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Ecuador 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 Ecuador

Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
5:18 am - 10:37 pm
STL
-
GYE
17h 19m
1 stop
American Airlines Logo
6:00 am - 11:32 pm
GYE
-
STL
17h 32m
2 stops
$700American Airlines
Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
5:18 am - 10:37 pm
STL
-
GYE
17h 19m
1 stop
American Airlines Logo
2:25 pm - 10:24 am
GYE
-
STL
19h 59m
1 stop
$708American Airlines
Wed, Jul 8 - Tue, Jul 14
United Airlines Logo
7:05 pm - 11:25 pm
STL
-
UIO
28h 20m
2 stops
United Airlines Logo
12:35 am - 8:39 am
UIO
-
STL
32h 04m
2 stops
$709United Airlines
Wed, Jul 8 - Fri, Jul 17
United Airlines Logo
7:05 pm - 11:25 pm
STL
-
UIO
28h 20m
2 stops
United Airlines Logo
7:25 am - 10:45 pm
UIO
-
STL
15h 20m
1 stop
$712United Airlines
Fri, Aug 21 - Sat, Aug 29
United Airlines Logo
6:15 am - 11:25 pm
STL
-
UIO
17h 10m
1 stop
United Airlines Logo
12:35 am - 10:10 am
UIO
-
STL
9h 35m
1 stop
$727United Airlines
Sat, Nov 7 - Fri, Nov 13
LATAM Airlines Logo
11:51 am - 9:25 pm
STL
-
UIO
8h 34m
1 stop
LATAM Airlines Logo
12:55 am - 6:01 pm
UIO
-
STL
18h 06m
1 stop
$757LATAM Airlines
Tue, Jul 7 - Tue, Jul 14
Multiple Airlines Logo
7:03 pm - 11:30 pm
STL
-
GYE
28h 27m
3 stops
Multiple Airlines Logo
7:05 pm - 6:15 pm
GYE
-
STL
47h 10m
2 stops
$760Multiple Airlines
Tue, Jul 7 - Tue, Jul 14
Multiple Airlines Logo
7:03 pm - 11:30 pm
STL
-
GYE
28h 27m
3 stops
Multiple Airlines Logo
6:50 pm - 6:15 pm
GYE
-
STL
47h 25m
3 stops
$766Multiple Airlines
Sat, Jun 6 - Mon, Jun 8
Copa Airlines Logo
7:05 pm - 8:51 pm
STL
-
GYE
25h 46m
2 stops
Copa Airlines Logo
6:27 pm - 9:30 pm
GYE
-
STL
27h 03m
2 stops
$780Copa Airlines
Fri, Nov 13 - Fri, Nov 20
LATAM Airlines Logo
4:13 pm - 2:15 pm
STL
-
GPS
22h 02m
2 stops
LATAM Airlines Logo
12:21 pm - 5:06 pm
GPS
-
STL
28h 45m
2 stops
$1,758LATAM Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Ecuador, 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 Ecuador is October, when tickets cost $0 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $818 and $746 respectively.

Good to know

Low seasonMay
Cheapest flight$333
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from St. Louis to Guayaquil

FAQs - booking Ecuador flights

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

    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 Ecuador.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Ecuador 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 Ecuador?

    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 from St. Louis to Ecuador with an airline and back with another airline.

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

    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 from St. Louis to Ecuador up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Ecuador

 
Need help choosing which airline to fly with from St. Louis to Ecuador? 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 8423 reviews
8.5Crew
7.8Entertainment
7.2Food
8.1Boarding
7.8Comfort
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The flight attendants were very friendly, efficient, and helpful. The plane was ahead of schedule, and it all went very smoothly. Thank you.

They lost my baggage and I am still struggling to the information and update

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

There were flight delays making our flight arrive at our destination after midnight didn’t seem to have enough crew or airplanes for the flights laid over in Dallas should’ve had plenty of time to make it to our next flight only made it because that flight was also delayed because our plane wasn’t even at the airport yet overall have not had a good experience on American

Flight left on time. Captain provided relevant announcements. We had to wait 45 minutes to desembark due to the ramp closed because of lightening.

It's a long flight and that is always difficult. I was comfortable and well. The movies available were great and the crew was good.

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

Information on your arrival and departure airports