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Cheap flights from Illinois to Antofagasta from $921

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Antofagasta departing on 3/23. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:51 pm - 10:19 pmORD-ANF
30h 28m2 stops
American Airlines Logo
8:08 pm - 5:59 pmANF-ORD
47h 51m2 stops
$921American Airlines
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Mon, Mar 23 - Sun, Mar 29
American Airlines Logo
3:02 pm - 8:12 pmORD-ANF
27h 10m2 stops
American Airlines Logo
9:08 pm - 12:00 pmANF-ORD
40h 52m2 stops
$961American Airlines
Find Deal
Sun, Mar 22 - Sun, Mar 29
LATAM Airlines Logo
11:19 am - 12:11 pmORD-ANF
22h 52m2 stops
LATAM Airlines Logo
12:13 pm - 8:39 amANF-ORD
22h 26m2 stops
$1,025LATAM Airlines
Find Deal
Sat, Mar 21 - Sun, Mar 29

American Airlines flights from Illinois to Antofagasta

Our best American Airlines deals on Illinois to Antofagasta flight tickets
American Airlines
Mar 23
ORD1:51 pmChicago O'Hare Intl
30h 28m
2 stops
ANF10:19 pmAntofagasta Cerro Moreno
Mar 29
ANF8:08 pmAntofagasta Cerro Moreno
47h 51m
2 stops
ORD5:59 pmChicago O'Hare Intl
$921
Find similar
American Airlines
Mar 22
ORD3:02 pmChicago O'Hare Intl
27h 10m
2 stops
ANF8:12 pmAntofagasta Cerro Moreno
Mar 29
ANF9:08 pmAntofagasta Cerro Moreno
40h 52m
2 stops
ORD12:00 pmChicago O'Hare Intl
$961
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Antofagasta 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 November 10, 2025.
Use the filters below to find and compare flights from Illinois to Antofagasta that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoAntofagasta

ORD - ANF

ORDANF

Chicago O'Hare Intl

Mon 3/23

1:51 pm-10:19 pm

2 stops30h 28m

Antofagasta Cerro Moreno

Sun 3/29

8:08 pm-5:59 pm

2 stops47h 51m

$921

ChicagoAntofagasta

ORD - ANF

ORDANF

Chicago O'Hare Intl

Sun 3/22

3:02 pm-8:12 pm

2 stops27h 10m

Antofagasta Cerro Moreno

Sun 3/29

9:08 pm-12:00 pm

2 stops40h 52m

$961

ChicagoAntofagasta

ORD - ANF

ORDANF

Chicago O'Hare Intl

Sat 3/21

11:19 am-12:11 pm

2 stops22h 52m

Antofagasta Cerro Moreno

Sun 3/29

12:13 pm-8:39 am

2 stops22h 26m

$1,025

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Illinois to Antofagasta flight deals and tips

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

Direct flights

None
There are no direct flights from Illinois to Antofagasta. There are no popular flight routes from Illinois to Antofagasta.
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  • When did momondo last update prices for flights from Illinois to Antofagasta Cerro Moreno Airport?

    Prices for flights from Illinois to Antofagasta Cerro Moreno Airport refresh daily.

  • How old do you have to be to fly from Illinois to Antofagasta Cerro Moreno Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Antofagasta Cerro Moreno Airport.

  • What documentation or ID do you need to fly to Antofagasta Cerro Moreno Airport?

    The required travel and health documents for your Antofagasta Cerro Moreno 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 Antofagasta Cerro Moreno Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Illinois to Antofagasta?

    Confirm your travel details to search for the latest offers for flights from Illinois to Antofagasta. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Illinois to Antofagasta with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Antofagasta for you.

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

Yes. momondo allows you to filter the results for Illinois to Antofagasta flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Antofagasta.

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

Yes. momondo can track prices for Illinois to Antofagasta flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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