$400 Find Cheap Flights from St. Louis to Chile

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 Chile departing on 11/1. 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

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Cheap Flights from St. Louis to Chile

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Santiago
Santiago2 stops$724
Easter Island
Easter Island2 stops$4,889
Santiago
Santiago2 stops$724
Easter Island
Easter Island2 stops$4,889

Book Cheap St. Louis to Chile 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 Chile 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 Chile

Mon, Aug 11 - Thu, Aug 14
 Logo
5:40 pm - 4:15 amSTL-SCL
33h 35m2 stops
 Logo
9:45 am - 11:47 pmSCL-STL
15h 02m1 stop
Mon, Aug 11 - Thu, Aug 14
 Logo
5:40 pm - 4:15 amSTL-SCL
33h 35m2 stops
 Logo
9:45 am - 11:47 pmSCL-STL
15h 02m1 stop
Thu, Nov 27 - Tue, Dec 9
United Airlines Logo
8:20 am - 8:50 amSTL-SCL
21h 30m1 stop
United Airlines Logo
10:45 pm - 10:04 amSCL-STL
14h 19m1 stop
$784United Airlines
Find Deal
Thu, Nov 27 - Tue, Dec 9
United Airlines Logo
11:20 am - 8:50 amSTL-SCL
18h 30m1 stop
United Airlines Logo
10:45 pm - 2:25 pmSCL-STL
18h 40m2 stops
$788United Airlines
Find Deal
Thu, Nov 27 - Mon, Dec 8
Delta Logo
6:00 am - 5:40 amSTL-SCL
20h 40m2 stops
Delta Logo
6:30 pm - 10:46 amSCL-STL
19h 16m2 stops
$804Delta
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Sun, Nov 30 - Thu, Dec 11
LATAM Airlines Logo
9:00 am - 9:35 pmSTL-SCL
33h 35m3 stops
LATAM Airlines Logo
9:30 pm - 6:02 pmSCL-STL
23h 32m1 stop
$808LATAM Airlines
Find Deal
Sun, Nov 30 - Thu, Dec 11
Delta Logo
7:05 pm - 7:00 amSTL-SCL
32h 55m1 stop
Delta Logo
11:40 pm - 4:40 pmSCL-STL
20h 00m1 stop
$812Delta
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Tue, Oct 14 - Fri, Oct 24
American Airlines Logo
5:23 am - 8:00 amSTL-SCL
24h 37m1 stop
American Airlines Logo
9:55 pm - 4:23 pmSCL-STL
20h 28m2 stops
$839American Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
American Airlines Logo
5:28 am - 7:55 amSTL-SCL
24h 27m1 stop
American Airlines Logo
9:55 pm - 5:28 pmSCL-STL
21h 33m1 stop
$875American Airlines
Find Deal
Thu, Nov 27 - Mon, Dec 8
LATAM Airlines Logo
11:20 am - 6:35 amSTL-SCL
16h 15m2 stops
LATAM Airlines Logo
7:15 am - 11:39 pmSCL-STL
19h 24m3 stops
$878LATAM Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from St. Louis to Chile 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 Chile?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Chile, 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 Chile is October, when tickets cost $772 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $1,194 and $1,156 respectively.

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

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

If your flying dates are flexible, you should consider flying to Chile on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from St. Louis to Chile. For your return ticket, we recommend flying on a Tuesday and avoiding Fridays for the best deals.

How far in advance should I book a flight from St. Louis to Chile?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Chile, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Chile, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.


Good to know

Low seasonApril
Cheapest flight$400
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from St. Louis to Santiago

FAQs - booking Chile flights

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

    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 Chile.

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

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

    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 Chile 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 Chile?

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

  • What is the cheapest time of day to fly to Chile?

    The cheapest time of day to fly to Chile is generally in the afternoon, when round-trip flights cost $982 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to Chile is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,074.

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

 
Need help choosing which airline to fly with from St. Louis to Chile? 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
7.9Comfort
8.5Crew
7.3Food
8.2Boarding
7.9Entertainment
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

Bought a ticket that included a bag and they still charged me to check it in, latam is the worst airline.

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.

Lost ,y connection due to a mechanical delay, huge line to get new connection and vouchers

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.

It was a very good flight, no entertainment is the reason for not checking that box.

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.

Our flight was cancelled and it took them 5 hours to reschedule and the next morning they said we still didn’t have a new ticket.

We departed and landed on time, the aircraft was clean and comfortable, the crew were lovely. Online checkin worked well and the self service bag drop at the airport worked well. The a/c was an Airbus A330 and has been fitted with a good entertainment system with lots of choice in many languages. The price I paid for the flight was competitive with other airlines apart from the budget carriers, none of whom I was familiar with so I stuck to an airline I have used in previous visits to South America.

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 Chile

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