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Cheap flights from Illinois to Santiago from $285

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Santiago departing on 9/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Santiago

Cheap round-trip flights

Logo
10:27 am - 11:20 amORD-SCL
22h 53m2 stops
Logo
11:00 am - 9:22 amSCL-ORD
24h 22m1 stop
$611
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Fri, Sep 26 - Wed, Oct 8
Logo
10:27 am - 3:35 amORD-SCL
39h 08m2 stops
Logo
11:00 am - 9:18 amSCL-ORD
24h 18m1 stop
$622
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Wed, Sep 10 - Mon, Sep 22
LATAM Airlines Logo
11:20 am - 5:45 amORD-SCL
16h 25m2 stops
LATAM Airlines Logo
1:10 pm - 12:24 pmSCL-ORD
25h 14m2 stops
$691LATAM Airlines
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Sun, Sep 14 - Sat, Sep 20
Avianca Logo
11:20 pm - 3:20 pmORD-SCL
14h 00m1 stop
Avianca Logo
1:35 am - 8:20 pmSCL-ORD
21h 45m1 stop
$719Avianca
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Fri, Oct 31 - Sun, Nov 9
Avianca Logo
2:35 pm - 2:25 pmORD-SCL
21h 50m1 stop
Avianca Logo
12:55 am - 1:15 pmSCL-ORD
14h 20m1 stop
$724Avianca
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Tue, Sep 16 - Sun, Sep 21
LATAM Airlines Logo
10:40 am - 6:55 amORD-SCL
17h 15m1 stop
LATAM Airlines Logo
11:40 pm - 5:37 pmSCL-ORD
20h 57m1 stop
$744LATAM Airlines
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Tue, Jan 27 - Tue, Feb 10
Delta Logo
1:26 pm - 7:00 amSTL-SCL
15h 34m1 stop
Delta Logo
11:30 pm - 4:05 pmSCL-STL
18h 35m2 stops
$776Delta
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Mon, Sep 8 - Mon, Sep 22
Delta Logo
6:00 am - 6:35 amSTL-SCL
21h 35m2 stops
Delta Logo
11:15 pm - 3:58 pmSCL-STL
19h 43m1 stop
$784Delta
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Thu, Nov 27 - Mon, Dec 8
American Airlines Logo
7:00 am - 7:50 amSTL-SCL
21h 50m1 stop
American Airlines Logo
10:15 pm - 3:50 pmSCL-STL
20h 35m1 stop
$824American Airlines
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Sat, Nov 8 - Wed, Nov 12
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
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Sat, Oct 4 - Sat, Oct 11

United Airlines flights from Illinois to Santiago

Our best United Airlines deals on Illinois to Santiago flight tickets
United Airlines
Dec 8
MLI1:00 pmMoline Quad-City
16h 50m
2 stops
SCL8:50 amSantiago Arturo Merino Benitez
Dec 12
SCL10:45 pmSantiago Arturo Merino Benitez
16h 05m
2 stops
MLI11:50 amMoline Quad-City
$828
Find similar
United Airlines
Nov 1
STL4:48 pmLambert-St Louis
13h 02m
1 stop
SCL7:50 amSantiago Arturo Merino Benitez
Nov 22
SCL10:45 pmSantiago Arturo Merino Benitez
23h 02m
1 stop
STL6:47 pmLambert-St Louis
$864
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Avianca flights from Illinois to Santiago

Our best Avianca deals on Illinois to Santiago flight tickets
Avianca
Oct 31
ORD11:20 pmChicago O'Hare Intl
14h 00m
1 stop
SCL3:20 pmSantiago Arturo Merino Benitez
Nov 9
SCL1:35 amSantiago Arturo Merino Benitez
21h 45m
1 stop
ORD8:20 pmChicago O'Hare Intl
$719
Find similar
Avianca
Sep 1
ORD2:35 pmChicago O'Hare Intl
21h 50m
1 stop
SCL1:25 pmSantiago Arturo Merino Benitez
Sep 23
SCL12:55 amSantiago Arturo Merino Benitez
14h 20m
1 stop
ORD1:15 pmChicago O'Hare Intl
$724
Find similar
Avianca
Sep 14
ORD2:35 pmChicago O'Hare Intl
12h 40m
1 stop
SCL5:15 amSantiago Arturo Merino Benitez
Sep 20
SCL12:55 amSantiago Arturo Merino Benitez
14h 20m
1 stop
ORD1:15 pmChicago O'Hare Intl
$730
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momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Santiago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Illinois to Santiago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSantiago

ORD - SCL

ORDSCL

Chicago O'Hare Intl

Fri 9/26

10:27 am-11:20 am

2 stops22h 53m

Santiago Arturo Merino Benitez

Wed 10/8

11:00 am-9:22 am

1 stop24h 22m

$611

ChicagoSantiago

ORD - SCL

ORDSCL

Chicago O'Hare Intl

Wed 9/10

10:27 am-3:35 am

2 stops39h 08m

Santiago Arturo Merino Benitez

Mon 9/22

11:00 am-9:18 am

1 stop24h 18m

$622

ChicagoSantiago

ORD - SCL

ORDSCL

Chicago O'Hare Intl

Sun 9/14

11:20 am-5:45 am

2 stops16h 25m

Santiago Arturo Merino Benitez

Sat 9/20

1:10 pm-12:24 pm

2 stops25h 14m

$691

ChicagoSantiago

ORD - SCL

ORDSCL

Chicago O'Hare Intl

Fri 10/31

11:20 pm-3:20 pm

1 stop14h 00m

Santiago Arturo Merino Benitez

Sun 11/9

1:35 am-8:20 pm

1 stop21h 45m

$719

ChicagoSantiago

ORD - SCL

ORDSCL

Chicago O'Hare Intl

Tue 9/16

2:35 pm-2:25 pm

1 stop21h 50m

Santiago Arturo Merino Benitez

Sun 9/21

12:55 am-1:15 pm

1 stop14h 20m

$724

ChicagoSantiago

ORD - SCL

ORDSCL

Chicago O'Hare Intl

Tue 1/27

10:40 am-6:55 am

1 stop17h 15m

Santiago Arturo Merino Benitez

Tue 2/10

11:40 pm-5:37 pm

1 stop20h 57m

$744

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Mon 9/8

1:26 pm-7:00 am

1 stop15h 34m

Santiago Arturo Merino Benitez

Mon 9/22

11:30 pm-4:05 pm

2 stops18h 35m

$776

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Thu 11/27

6:00 am-6:35 am

2 stops21h 35m

Santiago Arturo Merino Benitez

Mon 12/8

11:15 pm-3:58 pm

1 stop19h 43m

$784

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Sat 11/8

7:00 am-7:50 am

1 stop21h 50m

Santiago Arturo Merino Benitez

Wed 11/12

10:15 pm-3:50 pm

1 stop20h 35m

$824

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Sat 10/4

5:28 am-7:55 am

1 stop24h 27m

Santiago Arturo Merino Benitez

Sat 10/11

9:55 pm-5:28 pm

1 stop21h 33m

$875

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to Santiago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Santiago?

In general, April is the cheapest month to fly from Illinois to Santiago. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $684. If you don’t want to visit Santiago in April, then you should wait until May to fly from Illinois, when ticket prices are also cheap, with an average price of $801.

What is the cheapest day to depart on your flight to Santiago?

The cheapest day to depart on your flight to Santiago is on a Monday when prices can be found for as low as $847. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Santiago on Saturday is $992.

What is the cheapest time of day to depart on your flight to Santiago?

In the evening is the cheapest time of day to fly from Illinois to Santiago when you can find flight prices for as low as $843. Flying to Santiago in the evening is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Santiago, so prices are often more expensive at around $942 per ticket.

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

You are more likely to see cheaper flights to Santiago from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Santiago for around $855 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Santiago from Illinois for as low as $716 on momondo.

Can stopping save me money on Illinois to Santiago flights?

You could potentially save up to 41% on your flight if you consider stops on a Illinois to Santiago flight.

Cheap Illinois to Santiago flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Santiago

Best Price Found

$285

Fastest flight time

11h 49m

Direct flights

None

Airports in Santiago

1 airport
The best one-way flight to Santiago from Illinois in the past 72 hours is $285. The best round-trip flight deal from Illinois to Santiago found on momondo in the last 72 hours is $611.
The fastest flight from Illinois to Santiago takes 11h 49m
There are no direct flights from Illinois to Santiago. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Santiago Arturo Merino Benitez Airport and Chicago Midway Airport - Santiago Arturo Merino Benitez Airport.
There is 1 airport near Santiago: Santiago Arturo Merino Benitez (SCL)
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  • When did momondo last update prices for flights from Illinois to Santiago Arturo Merino Benitez Airport?

    Prices for flights from Illinois to Santiago Arturo Merino Benitez Airport were last updated today.

  • How many operators does momondo search for flights from Illinois to Santiago Arturo Merino Benitez Airport?

  • How old do you have to be to fly from Illinois to Santiago Arturo Merino Benitez Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Santiago Arturo Merino Benitez Airport.

  • What documentation or ID do you need to fly to Santiago Arturo Merino Benitez Airport?

    The required travel and health documents for your Santiago Arturo Merino Benitez Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Santiago Arturo Merino Benitez Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Santiago

Compare and see reviews for airlines that fly from Illinois to Santiago with momondo
Airline
Rating
Free Cancellation
Price
Copa AirlinesPriceFrom $511Free CancellationRating
7.5
1,510 reviews
Search Copa Airlines flights
AviancaPriceFrom $539Free CancellationRating
6.7
2,407 reviews
Search Avianca flights
LATAM AirlinesPriceFrom $694Free CancellationRating
7.5
1,844 reviews
Search LATAM Airlines flights
DeltaPriceFrom $698Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Air CanadaPriceFrom $707Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights
American AirlinesPriceFrom $750Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $782Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights

Traveling to a place near Santiago?

Book flights to Santiago if you plan to visit one of these locations
Viña del Mar
Santa Cruz
Valparaíso
Valle Nevado
San Fernando
Pichilemu

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Santiago?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Santiago from Illinois.

Can I find flights from Illinois to Santiago with flexible booking policies on momondo?

Yes. All flights to Santiago from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Santiago?

Once all potential Illinois to Santiago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Santiago right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Santiago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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