$315 Find Cheap Flights from Santiago to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Santiago to Illinois departing on 7/25. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Santiago to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago2 stops$616
St. Louis
St. Louis1 stop$865
Chicago
Chicago2 stops$616
St. Louis
St. Louis1 stop$865

Book Cheap Santiago to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Santiago to Illinois 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 Santiago to Illinois

Tue, Aug 4 - Wed, Aug 12
LATAM Airlines Logo
11:00 pm - 6:49 pm
SCL
-
ORD
20h 49m
2 stops
LATAM Airlines Logo
3:25 pm - 6:55 am
ORD
-
SCL
14h 30m
2 stops
$616LATAM Airlines
Wed, Sep 2 - Tue, Sep 22
LATAM Airlines Logo
11:00 pm - 10:36 pm
SCL
-
MDW
24h 36m
2 stops
LATAM Airlines Logo
5:11 pm - 5:08 pm
MDW
-
SCL
21h 57m
2 stops
$616LATAM Airlines
Mon, Aug 17 - Mon, Aug 31
Avianca Logo
6:40 am - 9:20 pm
SCL
-
ORD
15h 40m
1 stop
Avianca Logo
11:20 pm - 2:15 pm
ORD
-
SCL
13h 55m
1 stop
$617Avianca
Tue, Aug 4 - Fri, Aug 14
Avianca Logo
12:30 am - 9:20 pm
SCL
-
ORD
21h 50m
1 stop
Avianca Logo
11:20 pm - 2:15 pm
ORD
-
SCL
13h 55m
1 stop
$618Avianca
Thu, Nov 12 - Mon, Nov 16
LATAM Airlines Logo
11:10 pm - 2:13 pm
SCL
-
ORD
18h 03m
1 stop
LATAM Airlines Logo
3:35 pm - 2:05 pm
ORD
-
SCL
19h 30m
2 stops
$619LATAM Airlines
Tue, Aug 11 - Tue, Aug 18
Delta Logo
8:40 pm - 2:33 pm
SCL
-
STL
18h 53m
1 stop
Delta Logo
11:00 am - 5:55 am
STL
-
SCL
17h 55m
2 stops
$865Delta
Wed, Sep 9 - Wed, Sep 16
Delta Logo
7:55 pm - 12:32 pm
SCL
-
STL
18h 37m
2 stops
Delta Logo
7:05 am - 6:55 am
STL
-
SCL
21h 50m
2 stops
$866Delta
Thu, Nov 19 - Mon, Nov 23
United Airlines Logo
10:45 pm - 10:05 am
SCL
-
STL
14h 20m
1 stop
United Airlines Logo
11:00 am - 8:50 am
STL
-
SCL
18h 50m
1 stop
$875United Airlines
Mon, Aug 3 - Sun, Aug 9
American Airlines Logo
9:00 pm - 10:54 pm
SCL
-
STL
26h 54m
1 stop
American Airlines Logo
11:35 am - 7:05 am
STL
-
SCL
18h 30m
1 stop
$879American Airlines
Mon, Aug 3 - Sun, Aug 9
American Airlines Logo
9:00 pm - 5:21 pm
SCL
-
STL
21h 21m
2 stops
American Airlines Logo
11:35 am - 7:05 am
STL
-
SCL
18h 30m
1 stop
$884American Airlines
Booking Insights

KAYAK's insights & trends for Santiago to Illinois flights

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

How much is a round-trip flight from Santiago to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Santiago to Illinois departing in August.

What is the cheapest month to fly from Santiago to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Santiago to Illinois, 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 Santiago to Illinois is April, when tickets cost $253 (return) on average. On the other hand, the most expensive months are January and March, when the average cost of round-trip tickets is $587 and $583 respectively.

How far in advance should I book a flight from Santiago to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Santiago to Illinois, 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 Santiago to Illinois, you should book around 3 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$315
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Santiago to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Santiago to Illinois?

    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 Santiago to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Santiago to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Santiago to Illinois 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 Santiago to Illinois?

    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 Santiago to Illinois 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 Santiago to Illinois?

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

Reviews of the top 5 airlines serving from Santiago to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Santiago to Illinois. 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 Santiago to Illinois? 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.
7.8
DeltaOverall score based on 8454 reviews
8.5Crew
7.2Food
7.8Entertainment
7.8Comfort
8.1Boarding
Airline reviews

It was as good as it could be. Flying is not a pleasant experience these days.

8.0 ExcellentMark, Jun 2026
LAX - ORD
Read more Delta reviews

It was as good as it could be. Flying is not a pleasant experience these days.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

Got on the plane and sat there for an hour before departure.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

I've flown several other airlines, and Delta is really on top on things.

Cramped seating for me. Luckily it wasn’t a long flight

The crew was very nice and very attentive. However, I was surprised to find that they did not carry small throw-up bags. I got sick from the turbulence and they had to bring me a trash bag.😳 You can imagine how embarrassing is to lift a large trash bag with vomit over somebody else's head. Just bring this small discreet little bags back to the regular supply for the seats. Otherwise, I love Delta airlines.

Worst food I've ever seen on a plane. One flight attendant must have been going through a bad breakup, although the one who kept covering for her was excellent.

The crew in Chile was late to open the counter to check in. It was the longest check in ever. But they were pleasant and thorough. Food was great going to Chile, coming back to USA was pretty bad. All the airplane crew were great.

stood in line to check in luggage for nearly an hour. very poor service and not excusable

Same as the previous flight as far as comfort and food. Entertainment didn’t have a watchable screen so everything would need to be watched on your own device in which they didn’t have a charging port that accommodated my iPhone. Seats were very uncomfortable. Staff was very friendly.

They didn’t have any headphones for the entertainment screen and their USB port didn’t accommodate a USB-C for more modern phones. The food was just ok. The staff was friendly but the seats were very uncomfortable for a full flight.

Do not book it’s a scam! They stole $1200 from me

Flight got delayed; had to go through security three times.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

I would like a glass of wine or some kind of alcoholic drink.

Very long delay but we just made the connection. The requested wheel chairs were not there so I had to assist/carry BOTH of my parents to the gate while carrying their bags so we could make the connection. The plane had no entertainment system and NO WIFI, legroom zero. Restrooms on ALL of flights were dirty and one restroom did not even work properly. I was surprised to see COPA like this since my flight with them in 2013 was incredible, the seats were amazing and the food options were spectacular. Of course, I see this kind of service on many airlines now, with services and hospitality at an all time low. The worse part of the trip was seeing my 90 year old parents go through hell on these flights and having to try and rush to a gate to make the next flight. Never again

Copa delayed the fight three times. We ended up flying about 24 hours after the original time.

Food was not good, no options for vegetarian or gluten free

In flight from Miami to Anchorage, we were all on board ready to take off. Pilot decided to take on more fuel causing a delay. Once fueled, the pilot came back over the radio stating more delay due to VIP. These delays caused me to miss my connecting flight. I went to the Alaska Air counter for information. They flat out stated that it was ATCs fault that I missed my flight and booked me a flight the next day about 1300 . I believe if we had the fuel prior to getting on board we would not of been delayed and I would have taken off on time. Pilot was taken out of the equation. I think they should’ve taken responsibility for their pilots decision to top off his aircraft instead of waiting til the last moment. Enough said…

We liked the way we were treated by the sraff at lima airport counter and the the flight attendants. We did not like the fact that the kiosks at airport rebooted after we entered our information and then told us that there was an issueand we needed to go to the counter. Such a waste of time for a group of 6. Once we got our boarding passes there was no assigned gate so we did not know where to go.

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

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

They didi not provide wheelchair though we had requested. We had to run around for 40 minutes and arrange it from the airport!

Everything was good except the check in. Could not do it online neither on the machines in the airport. Needed special assistance from the airline desk clerk

Great customer service, very accommodating. (Check in) Smooth flight, thank you Pilots. Only negative was one working bathroom in first class. Atlanta Base flight attendants were wonderful. Thank you for your smiling faces Delta..

The seats are getting smaller and smaller. Very uncomfortable trip. More than in other airlines

I do not speak Spanish or read in Spanish When asking for help, people were hard to find they spoke quickly and pointed a lot directions for where to go and what to do we’re unclear. Which made my traveling uneasy.

Flight was great Customer service was questionable until we found someone at checkin to help us. One young lady took all our passports disappeared for 15 minutes, came back with nothing done, handed to someone else and left for lunch. Very complacent. Baggage was very expensive until we went to the service counter and a separate person helped us. Even with platinum status they wouldn’t allow free bags. We will continue to fly Delta as our preferred carrier but will avoid checking in with Latam. Dr. Armand Radke

Nothing, I wont be flying American Airlines again and will not be recommending anyone to fly American Airlines. It was the worst experience flying I've ever had.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

The planes can use an actual cleaning. The armrest and seats do not appear to be cleaned on this one and most other planes.

Flight was delayed…once landed at ORD, no gates were available so made us wait for 56 minutes after we landed to let us out of the aircraft!

Very efficient boarding and quick flight. Attendants don’t come by often so would often have a lot of trash at seat.

The flight de-boarded after being informed of a 3 hour delay. The gate agent said we could go to lounge. The flight ended up boarding 20 minutes later and I missed it.

I love the e fact that the staff communicated swiftly when my flight was delayed and gate number changed

We had a mechanical delay which made us 90 minutes late (9:30 PM) then land and put into the penalty box because a plane was in our gate? What the hell! We should get priority.Damn American.

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

The person next to me used my leg space up and made it an uncomfortable ride the whole time

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

I handed in my suitcase in perfect condition at SAL Airport. And in MIA Airport I received it with one corner broken and the wheels bent.

I like the crew members they're very friendly. Clean plane. The flight was on time. I dont like the comfort my car seat its better that the plane seats. They charge for everything. This airline was very good. Now it's a low cost airline

6 hour flight and have to pay for everything 100 dollars to add a carry-on bag is insane

The check in is the only positive thing in Avianca. The seat is the most uncomfortable I have traveled, the distance is minimal.

Not what it used to be. The sale of food makes them look greedy!

Avianca is not what it used to be. So disappointing

It was horrible. My experience with Avianca. I didn’t know it was Pakistan international Airlines but anyway, whatever it is it is bad horrible you guys need to upgrade everything in those planes. And you guys charge $130 for a carry-on did they wanna let me in with my carry-on that I travel everywhere with the luggage you guys are such a dog thank you

why did we have to go through security mid flight

Purchased a business class ticket and got a economy seat with center seat blocked they call it business. 3100usd ticket on a flight where economy costs 500usd The biggest scam insult have had on a regular airline. Avianca should be in the low cost category and kicked out of Star Alliance. I want the difference to be credited. Ets see what Avianca does. No reply so far. Avianca = low cost airline. Beware

Everything you need to know for your flight from Santiago to Illinois

Information on your arrival and departure airports