What are the cheapest airlines to fly from Illinois to Rio de Janeiro Santos Dumont Airport one-way?

To fly one-way, consider booking your trip with LATAM Airlines, which is currently one of the cheapest options available, starting at $433. United Airlines flights start at $489 while deals on Delta start at $536 one-way.

What are the most popular routes from Illinois to Rio de Janeiro Santos Dumont Airport?

While some choose either Chicago Midway - Rio de Janeiro Santos Dumont or Lambert-St Louis - Rio de Janeiro Santos Dumont, Chicago O'Hare Intl - Rio de Janeiro Santos Dumont is the most popular route from Illinois to Rio de Janeiro Santos Dumont Airport.

How far in advance should I book a flight from Illinois to Rio de Janeiro Santos Dumont Airport?

Travelers have found it’s best to book a flight 14 days in advance to save up to 38% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 14 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Illinois to Rio de Janeiro Santos Dumont Airport 1-2 weeks in advance for as low as $512, or $724 for flights within the next 24 hours.

What is the cheapest month to fly from Illinois to Rio de Janeiro Santos Dumont Airport?

The best pricing can be found in the month of October. Prices to Rio de Janeiro Santos Dumont Airport from Illinois average $837. You can even find prices in October for less than $837, as users have found deals to Rio de Janeiro Santos Dumont Airport from as low as $485. The month of December appears to be one of the more expensive times to travel to Rio de Janeiro Santos Dumont Airport from Illinois. Flying in the targeted month can save you up to 30%.

What is the cheapest time of day to fly from IL to SDU?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Rio de Janeiro Santos Dumont Airport as you normally would.

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

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

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

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

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

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

$313+ Flights from Illinois to Rio de Janeiro Santos Dumont Airport, Brazil

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Cheap flight deals from Illinois to Santos Dumont

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$679 (Mytrip)
One-way from	$313 (Kiwi.com)
Popular in	December
Cheapest in	October
Average price	$704

Provider with most accurate pricing for Chicago (CHI)-Rio de Janeiro (RIO) flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-Rio de Janeiro (RIO) flights.

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From Illinois to Rio de Janeiro Santos Dumont

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One-way flight from Illinois to Rio de Janeiro Santos Dumont

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($62 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from Illinois to Santos Dumont

Cheapest flights from Illinois to Santos Dumont
Explore the most affordable flight options available from Illinois to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

Sat 6/712:41 pmORD - SDU

2 stops31h 44mMultiple Airlines

Sat 6/144:30 pmSDU - ORD

3 stops33h 15mMultiple Airlines

Deal found 4/23

$679

Thu 5/12:00 pmORD - SDU

2 stops23h 50mAir Canada

Wed 5/77:55 amSDU - ORD

2 stops27h 57mAir Canada

Deal found 4/22

$711

Fri 5/167:30 amSTL - SDU

2 stops30h 20mAir Canada

Tue 6/31:00 pmSDU - STL

2 stops25h 36mAir Canada

Deal found 4/22

$780

Thu 11/62:59 pmORD - SDU

2 stops16h 41mGOL

Tue 11/116:00 amSDU - ORD

2 stops19h 15mGOL

Deal found 4/23

$813

Mon 9/221:16 pmORD - SDU

2 stops18h 19mLATAM Airlines

Sat 10/48:20 pmSDU - ORD

2 stops18h 58mLATAM Airlines

Deal found 4/22

$814

Tue 5/209:20 pmORD - SDU

1 stop16h 30mUnited Airlines

Tue 5/271:05 pmSDU - ORD

1 stop19h 40mUnited Airlines

Deal found 4/23

$817

Fri 6/209:20 pmORD - SDU

1 stop16h 30mLufthansa

Sat 6/281:00 pmSDU - ORD

1 stop19h 45mLufthansa

Deal found 4/23

$907

Mon 6/24:15 pmMDW - SDU

2 stops19h 25mLATAM Airlines

Mon 6/98:20 pmSDU - MDW

2 stops17h 39mLATAM Airlines

Deal found 4/21

$909

Wed 7/237:55 pmORD - SDU

2 stops35h 40mDelta

Sat 8/28:20 pmSDU - ORD

2 stops21h 59mDelta

Deal found 4/23

$1,004

Fri 11/74:34 pmSTL - SDU

2 stops15h 06mGOL

Sun 11/166:00 amSDU - STL

2 stops20h 01mGOL

Deal found 4/23

$1,038

Sat 6/219:20 pmORD - SDU

1 stop33h 20mAzul

Sat 6/281:00 pmSDU - ORD

1 stop19h 45mAzul

Deal found 4/22

$1,058

Fri 6/61:30 pmSTL - SDU

2 stops24h 20mMultiple Airlines

Fri 6/131:00 pmSDU - STL

2 stops25h 36mMultiple Airlines

Deal found 4/23

$1,065

Best flights from Illinois to Santos Dumont
Discover carefully curated flight deals from Illinois to Santos Dumont that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2025.

Sat 6/712:41 pmORD - SDU

2 stops31h 44mMultiple Airlines

Sat 6/144:30 pmSDU - ORD

3 stops33h 15mMultiple Airlines

Deal found 4/23

$679

Tue 5/203:50 pmORD - SDU

2 stops22h 00mAir Canada

Tue 5/271:05 pmSDU - ORD

2 stops28h 00mAir Canada

Deal found 4/23

$720

Mon 9/221:16 pmORD - SDU

2 stops18h 19mLATAM Airlines

Sat 10/48:20 pmSDU - ORD

2 stops18h 58mLATAM Airlines

Deal found 4/22

$814

Tue 5/209:20 pmORD - SDU

1 stop16h 30mUnited Airlines

Tue 5/271:05 pmSDU - ORD

1 stop19h 40mUnited Airlines

Deal found 4/23

$817

Fri 6/209:20 pmORD - SDU

1 stop16h 30mLufthansa

Sat 6/281:00 pmSDU - ORD

1 stop19h 45mLufthansa

Deal found 4/23

$907

Mon 9/82:25 pmORD - SDU

2 stops18h 15mGOL

Mon 9/158:30 pmSDU - ORD

2 stops46h 14mGOL

Deal found 4/21

$930

Wed 7/237:55 pmORD - SDU

2 stops35h 40mDelta

Sat 8/28:20 pmSDU - ORD

2 stops21h 59mDelta

Deal found 4/23

$1,004

Sat 6/219:20 pmORD - SDU

1 stop33h 20mAzul

Sat 6/281:00 pmSDU - ORD

1 stop19h 45mAzul

Deal found 4/22

$1,058

Mon 5/192:30 pmSTL - SDU

2 stops23h 20mMultiple Airlines

Tue 6/31:00 pmSDU - STL

2 stops25h 36mMultiple Airlines

Deal found 4/23

$760

Sun 5/187:30 amSTL - SDU

2 stops30h 20mAir Canada

Tue 6/31:00 pmSDU - STL

2 stops25h 36mAir Canada

Deal found 4/23

$780

Wed 7/2310:35 amMDW - SDU

2 stops28h 45mLATAM Airlines

Wed 7/302:20 pmSDU - MDW

2 stops29h 43mLATAM Airlines

Deal found 4/23

$1,335

Thu 6/265:30 pmSTL - SDU

2 stops20h 20mUnited Airlines

Sat 7/51:00 pmSDU - STL

2 stops28h 47mUnited Airlines

Deal found 4/23

$1,402

Last-minute flights from Illinois to Santos Dumont
Discover last-minute flight deals from Illinois to Santos Dumont. Data last updated April 24, 2025 and is based on user searches.

Sun 4/274:59 pmMDW - SDU

2 stops18h 41mLATAM Airlines

Sun 5/48:20 pmSDU - MDW

2 stops28h 02mLATAM Airlines

Deal found 4/22

$1,206

Sun 4/271:50 pmORD - SDU

2 stops17h 45mLATAM Airlines

Sun 5/48:20 pmSDU - ORD

2 stops18h 50mLATAM Airlines

Deal found 4/22

$1,505

Wed 4/304:59 pmMDW - SDU

2 stops18h 41mDelta

Mon 5/58:20 pmSDU - MDW

2 stops17h 43mDelta

Deal found 4/23

$5,212

Thu 5/12:00 pmORD - SDU

2 stops23h 50mAir Canada

Wed 5/77:55 amSDU - ORD

2 stops27h 57mAir Canada

Deal found 4/22

$711

Thu 5/19:20 pmORD - SDU

1 stop16h 30mUnited Airlines

Wed 5/71:05 pmSDU - ORD

1 stop19h 40mUnited Airlines

Deal found 4/22

$856

Sat 5/310:19 amORD - SDU

3 stops23h 56mMultiple Airlines

Mon 5/126:15 amSDU - ORD

2 stops19h 50mMultiple Airlines

Deal found 4/22

$1,063

Mon 5/510:20 amMDW - SDU

3 stops27h 30mMultiple Airlines

Thu 5/87:55 amSDU - MDW

3 stops35h 50mMultiple Airlines

Deal found 4/21

$1,860

Fri 5/167:30 amSTL - SDU

2 stops30h 20mAir Canada

Tue 6/31:00 pmSDU - STL

2 stops25h 36mAir Canada

Deal found 4/22

$780

Mon 5/1912:48 pmMDW - SDU

2 stops18h 47mDelta

Wed 6/48:20 pmSDU - MDW

2 stops23h 16mDelta

Deal found 4/22

$1,259

Mon 5/195:29 pmSTL - SDU

2 stops20h 21mUnited Airlines

Fri 6/131:00 pmSDU - STL

2 stops28h 30mUnited Airlines

Deal found 4/21

$1,289

Tue 5/209:20 pmORD - SDU

1 stop16h 30mUnited Airlines

Tue 5/271:05 pmSDU - ORD

1 stop19h 40mUnited Airlines

Deal found 4/23

$817

Thu 5/227:30 amSTL - SDU

2 stops30h 20mMultiple Airlines

Fri 6/136:00 amSDU - STL

2 stops19h 59mMultiple Airlines

Deal found 4/21

$1,324

One-way flights from Illinois to Santos Dumont
Search for one-way flight options from Illinois to Santos Dumont. Find affordable one-way fares based on user searches. Data last updated April 24, 2025.

Sat 6/144:45 pmORD - SDU

3 stops50h 25mMultiple Airlines

Deal found 4/21

$313

Fri 5/305:50 pmMDW - SDU

3 stops36h 20mMultiple Airlines

Deal found 4/21

$337

Sun 5/1810:10 amSTL - SDU

3 stops43h 05mMultiple Airlines

Deal found 4/21

$371

Fri 5/301:30 pmORD - SDU

2 stops22h 25mLATAM Airlines

Deal found 4/22

$433

Wed 6/1810:26 amMDW - SDU

2 stops22h 39mLATAM Airlines

Deal found 4/23

$451

Sun 5/189:20 pmORD - SDU

1 stop16h 30mUnited Airlines

Deal found 4/21

$489

Fri 6/2010:26 amMDW - SDU

2 stops21h 09mDelta

Deal found 4/23

$536

Sun 10/1910:40 amORD - SDU

2 stops27h 10mAir Canada

Deal found 4/22

$590

Wed 5/217:30 amSTL - SDU

2 stops30h 20mAir Canada

Deal found 4/21

$620

Sun 7/1311:51 amSTL - SDU

2 stops24h 09mLATAM Airlines

Deal found 4/23

$747

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Sat 6/7

12:41 pm-10:25 pm

2 stops31h 44m

Rio de Janeiro Santos Dumont

Sat 6/14

4:30 pm-11:45 pm

3 stops33h 15m

$679

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Tue 5/20

3:50 pm-3:50 pm

2 stops22h 00m

Rio de Janeiro Santos Dumont

Tue 5/27

1:05 pm-3:05 pm

2 stops28h 00m

$720

St. LouisRio de Janeiro

STL - SDU

STLSDU

Lambert-St Louis

Fri 5/16

7:30 am-3:50 pm

2 stops30h 20m

Rio de Janeiro Santos Dumont

Tue 6/3

1:00 pm-12:36 pm

2 stops25h 36m

$780

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Mon 9/22

1:16 pm-9:35 am

2 stops18h 19m

Rio de Janeiro Santos Dumont

Sat 10/4

8:20 pm-1:18 pm

2 stops18h 58m

$814

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Mon 5/26

9:20 pm-3:50 pm

1 stop16h 30m

Rio de Janeiro Santos Dumont

Sun 6/8

1:00 pm-6:45 am

1 stop19h 45m

$817

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Fri 6/20

9:20 pm-3:50 pm

1 stop16h 30m

Rio de Janeiro Santos Dumont

Sat 6/28

1:00 pm-6:45 am

1 stop19h 45m

$907

ChicagoRio de Janeiro

MDW - SDU

MDWSDU

Chicago Midway

Mon 6/2

4:15 pm-1:40 pm

2 stops19h 25m

Rio de Janeiro Santos Dumont

Mon 6/9

8:20 pm-11:59 am

2 stops17h 39m

$909

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Mon 9/8

2:25 pm-10:40 am

2 stops18h 15m

Rio de Janeiro Santos Dumont

Mon 9/15

8:30 pm-4:44 pm

2 stops46h 14m

$930

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Wed 7/23

7:55 pm-9:35 am

2 stops35h 40m

Rio de Janeiro Santos Dumont

Sat 8/2

8:20 pm-4:19 pm

2 stops21h 59m

$1,004

ChicagoRio de Janeiro

ORD - SDU

ORDSDU

Chicago O'Hare Intl

Sat 6/21

9:20 pm-8:40 am

1 stop33h 20m

Rio de Janeiro Santos Dumont

Sat 6/28

1:00 pm-6:45 am

1 stop19h 45m

$1,058

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 24 results

Best time to book a flight from Illinois to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Illinois 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 Illinois to Rio de Janeiro Santos Dumont Airport

Rainfall in Santos Dumont by month

In terms of precipitation, rainfall in Rio de Janeiro Santos Dumont Airport ranges from 1.6 - 5.1 inches per month. January is typically the wettest month, when rainfall can reach 5.1 in. July is typically the driest time to visit Rio de Janeiro Santos Dumont Airport when rainfall is around 1.6 in.

Temperature in Santos Dumont by month

If weather is an important factor for your trip to Rio de Janeiro Santos Dumont Airport, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Santos Dumont

Read reviews from past customers who have flown Azul, Delta and LATAM Airlines from Illinois to Rio de Janeiro. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Azul

8.0

Very good

775 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

Azul

8.0

Very good

775 reviews

Azul

8.0

Very good

775 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

Delta

8.0

Very good

7,920 reviews

Azul

8.0

Very good

775 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

LATAM Airlines

7.5

Good

1,765 reviews

Azul

8.0

Very good

775 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

United Airlines

7.4

Good

8,685 reviews

Azul

8.0

Very good

775 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

GOL

7.3

Good

1,066 reviews

Azul

8.0

Very good

775 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

Related info for your journey

What are the cheapest airlines to fly from Illinois to Rio de Janeiro Santos Dumont Airport one-way?
To fly one-way, consider booking your trip with LATAM Airlines, which is currently one of the cheapest options available, starting at $433. United Airlines flights start at $489 while deals on Delta start at $536 one-way.
What are the most popular routes from Illinois to Rio de Janeiro Santos Dumont Airport?
While some choose either Chicago Midway - Rio de Janeiro Santos Dumont or Lambert-St Louis - Rio de Janeiro Santos Dumont, Chicago O'Hare Intl - Rio de Janeiro Santos Dumont is the most popular route from Illinois to Rio de Janeiro Santos Dumont Airport.
Can I find deals for flights from Illinois to Santos Dumont that include hotel bookings?
Yes. In addition to deals on Illinois to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Santos Dumont?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Santos Dumont.
Can I find deals for business class flights from Illinois to Santos Dumont?
Yes. Cheapflights offers flight deals from Illinois to Santos Dumont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$313+ Cheap flights from Illinois to Santos Dumont, Brazil (SDU)

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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Santos Dumont with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Illinois to Santos Dumont

Keep the following information in mind while searching for Illinois to Santos Dumont flight deals. Data was last updated April 24, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Illinois to Santos Dumont

Cheapest flights from Illinois to Santos DumontExplore the most affordable flight options available from Illinois to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

Explore the most affordable flight options available from Illinois to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Rio de Janeiro Santos Dumont Airport that are best for you.

Best time to book a flight from Illinois to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Illinois with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Rio de Janeiro Santos Dumont Airport

Rainfall in Santos Dumont by month

Plan your trip to Santos Dumont by taking into account the average rainfall totals by month.

Temperature in Santos Dumont by month

Plan your trip to Santos Dumont by taking into account the average temperature totals by month.

Reviews of airlines servicing Santos Dumont

Read reviews from past customers who have flown Azul, Delta and LATAM Airlines from Illinois to Rio de Janeiro. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines to fly from Illinois to Rio de Janeiro Santos Dumont Airport one-way?

What are the most popular routes from Illinois to Rio de Janeiro Santos Dumont Airport?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Santos Dumont

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Cheapest flights from Illinois to Santos Dumont
Explore the most affordable flight options available from Illinois to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.