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$274+ Cheap flights from Santos Dumont, Brazil (SDU) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SDU — ORD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Santos Dumont to Illinois

Cheapest flights from Santos Dumont to Illinois
Explore the most affordable flight options available from Santos Dumont to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This 123 Milhas deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:05 pmSDU - ORD
2 stops18h 30mLATAM Airlines
Sun 1/412:55 pmORD - SDU
2 stops21h 20mLATAM Airlines
Deal found 12/16$1,332
This Expedia deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:00 pmSDU - ORD
2 stops24h 35mMultiple Airlines
Tue 12/232:31 pmORD - SDU
2 stops47h 24mMultiple Airlines
Deal found 12/17$1,431
This LATAM Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:05 pmSDU - ORD
2 stops18h 47mLATAM Airlines
Mon 1/55:59 pmORD - SDU
2 stops16h 16mLATAM Airlines
Deal found 12/16$1,480
This 123 Milhas deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:00 pmSDU - ORD
2 stops24h 35mLATAM Airlines
Sat 12/2712:55 pmORD - SDU
2 stops21h 20mLATAM Airlines
Deal found 12/16$1,496
This FlightHub deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:05 pmSDU - ORD
2 stops18h 47mLATAM Airlines
Sat 1/35:29 pmORD - SDU
2 stops16h 46mLATAM Airlines
Deal found 12/17$2,055

Find flight deals from Santos Dumont to Illinois

Keep the following information in mind while searching for Santos Dumont to Illinois flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$661
(United Airlines)

One-way from

$274
(FlightHub)

Popular in

January

Cheapest in

February

Average price

$738
Provider with most accurate pricing for Rio de Janeiro (RIO)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Rio de Janeiro (RIO)-Chicago (CHI) flights.
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From Rio de Janeiro Santos Dumont to Illinois
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One-way flight from Rio de Janeiro Santos Dumont to Illinois
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Highest demand for flights based on searches. 3% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Santos Dumont to Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Rio de Janeiro Santos Dumont Airport to Illinois that are best for you.

Fly from

Santos Dumont

Fly to

Illinois

Route

Depart

Return

Price

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Thu 3/19

1:45 pm-7:00 am

1 stop19h 15m

Chicago O'Hare Intl

Sun 3/22

6:50 pm-4:40 pm

1 stop19h 50m

$657

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Mon 4/20

1:45 pm-10:08 am

2 stops22h 23m

Chicago O'Hare Intl

Sun 4/26

3:45 pm-4:45 pm

2 stops23h 00m

$663

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Thu 3/19

1:45 pm-12:00 pm

2 stops24h 15m

Chicago O'Hare Intl

Sun 3/22

2:00 pm-4:40 pm

2 stops24h 40m

$728

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sat 3/21

1:45 pm-10:10 pm

3 stops34h 25m

Chicago O'Hare Intl

Thu 3/26

7:15 am-4:40 pm

2 stops31h 25m

$805

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sun 3/22

2:50 pm-2:33 pm

2 stops25h 43m

Chicago O'Hare Intl

Thu 3/26

6:50 pm-4:40 pm

1 stop19h 50m

$881

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Wed 2/4

8:05 pm-1:39 pm

2 stops20h 34m

$274

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Tue 2/17

8:05 pm-1:34 pm

2 stops20h 29m

$322

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Mon 1/26

5:40 pm-9:05 am

2 stops18h 25m

$431

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Tue 2/17

9:55 am-9:39 am

3 stops26h 44m

$447

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Fri 2/20

3:05 pm-9:02 am

2 stops20h 57m

$492

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 15 results
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Best time to book a flight from Santos Dumont to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Santos Dumont with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rio de Janeiro Santos Dumont Airport to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Santos Dumont to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Rio de Janeiro Santos Dumont Airport to Illinois?

    For as low as $657, United Airlines can have you in Illinois from Rio de Janeiro Santos Dumont Airport in 19h 15m. Rio de Janeiro Santos Dumont Airport and Illinois are separated by a distance of 5312 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Santos Dumont to Illinois that include hotel bookings?

    Yes. In addition to deals on Santos Dumont to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santos Dumont to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santos Dumont to Illinois.

  • Can I find deals for business class flights from Santos Dumont to Illinois?

    Yes. Cheapflights offers flight deals from Santos Dumont to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Santos Dumont to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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