What is the cheapest month to book a flight from Rio de Janeiro Santos Dumont Airport to Chicago?

Currently, August is the cheapest month in which you can book a flight from Rio de Janeiro Santos Dumont Airport to Chicago (average of $245). Flying from Rio de Janeiro Santos Dumont Airport to Chicago in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 41 days in advance, which can save you up to 76% on flights from Rio de Janeiro Santos Dumont Airport to Chicago compared to booking the week you need them. Waiting 41 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $509. For sooner than that we have options available in the next 3 days from $806.

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

February can be a great time to fly to Chicago from Rio de Janeiro Santos Dumont Airport with a flight ticket averaging about $747. Cheapflights users have found deals in the month of February for as cheap as $322. The most expensive prices can be found in the month of January.

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

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

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

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

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

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

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

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

$303+ Flights from Rio de Janeiro Santos Dumont Airport, Brazil to Chicago

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Santos Dumont to Chicago with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Santos Dumont to Chicago

Round-trip from	$668 (Mytrip)
One-way from	$303 (FlightHub)
Popular in	January
Cheapest in	February
Average price	$695

From Rio de Janeiro Santos Dumont to Chicago (CHI)

Search Deals

One-way flight from Rio de Janeiro Santos Dumont to Chicago (CHI)

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($111 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($47 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Santos Dumont to Chicago

Cheapest flights from Santos Dumont to Chicago
Explore the most affordable flight options available from Santos Dumont to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Sun 9/286:10 amSDU - ORD

3 stops37h 29mMultiple Airlines

Sun 10/54:45 pmORD - SDU

2 stops27h 40mMultiple Airlines

Deal found 8/14

$668

Fri 9/57:55 amSDU - ORD

3 stops27h 23mMultiple Airlines

Tue 9/166:44 pmORD - SDU

2 stops25h 41mMultiple Airlines

Deal found 8/13

$693

Sat 9/279:55 amSDU - ORD

2 stops26h 57mMultiple Airlines

Sat 10/46:44 pmORD - SDU

2 stops25h 41mMultiple Airlines

Deal found 8/13

$705

Sun 9/142:55 pmSDU - ORD

1 stop17h 50mUnited Airlines

Thu 9/259:15 pmORD - SDU

1 stop15h 05mUnited Airlines

Deal found 8/13

$733

Sun 9/142:55 pmSDU - ORD

2 stops21h 18mUnited Airlines

Fri 9/193:00 pmORD - SDU

2 stops21h 20mUnited Airlines

Deal found 8/13

$738

Sun 9/282:20 pmSDU - ORD

2 stops25h 23mLATAM Airlines

Sun 10/510:40 amORD - SDU

2 stops20h 55mLATAM Airlines

Deal found 8/14

$742

Tue 9/306:20 amSDU - ORD

2 stops18h 06mGOL

Tue 10/2811:54 amORD - SDU

2 stops20h 51mGOL

Deal found 8/13

$767

Wed 9/248:20 pmSDU - ORD

2 stops17h 56mLATAM Airlines

Fri 10/31:35 pmORD - SDU

2 stops18h 00mLATAM Airlines

Deal found 8/14

$768

Best flights from Santos Dumont to Chicago
Discover carefully curated flight deals from Santos Dumont to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Sun 9/286:10 amSDU - ORD

3 stops37h 29mMultiple Airlines

Sun 10/54:45 pmORD - SDU

2 stops27h 40mMultiple Airlines

Deal found 8/14

$668

Sun 9/142:55 pmSDU - ORD

1 stop17h 50mUnited Airlines

Fri 9/194:00 pmORD - SDU

2 stops20h 20mUnited Airlines

Deal found 8/13

$733

Fri 9/57:55 amSDU - ORD

3 stops27h 23mMultiple Airlines

Tue 9/166:44 pmORD - SDU

2 stops25h 41mMultiple Airlines

Deal found 8/13

$693

Sun 9/142:55 pmSDU - ORD

1 stop17h 50mUnited Airlines

Sat 9/209:15 pmORD - SDU

1 stop18h 30mUnited Airlines

Deal found 8/13

$733

Sat 9/279:55 amSDU - ORD

2 stops26h 57mMultiple Airlines

Sat 10/46:44 pmORD - SDU

2 stops25h 41mMultiple Airlines

Deal found 8/13

$705

Sun 9/142:55 pmSDU - ORD

1 stop17h 50mUnited Airlines

Thu 9/259:15 pmORD - SDU

1 stop15h 05mUnited Airlines

Deal found 8/13

$733

Last-minute flights from Santos Dumont to Chicago
Discover last-minute flight deals from Santos Dumont to Chicago. Data last updated August 14, 2025 and is based on user searches.

Tue 8/1911:25 amSDU - ORD

2 stops27h 48mAir Canada

Tue 8/2610:40 amORD - SDU

2 stops25h 40mAir Canada

Deal found 8/14

$1,374

Tue 8/1911:25 amSDU - ORD

2 stops29h 39mAir Canada

Thu 8/289:55 amORD - SDU

2 stops26h 25mAir Canada

Deal found 8/14

$1,381

Tue 8/198:20 pmSDU - ORD

2 stops18h 20mDelta

Sat 8/306:20 pmORD - SDU

2 stops37h 15mDelta

Deal found 8/14

$1,556

Tue 8/198:20 pmSDU - ORD

2 stops18h 20mDelta

Fri 8/296:00 pmORD - SDU

2 stops37h 35mDelta

Deal found 8/14

$1,714

Wed 8/208:20 pmSDU - ORD

2 stops23h 17mDelta

Sat 8/306:20 pmORD - SDU

2 stops37h 15mDelta

Deal found 8/14

$1,312

Wed 8/208:20 pmSDU - ORD

2 stops39h 44mDelta

Thu 8/281:25 pmORD - SDU

2 stops22h 15mDelta

Deal found 8/14

$1,470

Thu 8/218:20 pmSDU - ORD

2 stops39h 44mDelta

Tue 8/2611:15 amORD - SDU

2 stops20h 20mDelta

Deal found 8/14

$1,313

Fri 8/228:20 pmSDU - ORD

2 stops27h 27mDelta

Wed 8/271:25 pmORD - SDU

2 stops18h 10mDelta

Deal found 8/14

$2,012

Sat 8/238:20 pmSDU - ORD

2 stops23h 17mDelta

Fri 8/296:20 pmORD - SDU

2 stops37h 15mDelta

Deal found 8/14

$2,170

Fri 9/57:55 amSDU - ORD

3 stops27h 23mMultiple Airlines

Tue 9/166:44 pmORD - SDU

2 stops25h 41mMultiple Airlines

Deal found 8/13

$693

Sun 9/142:55 pmSDU - ORD

1 stop17h 50mUnited Airlines

Thu 9/259:15 pmORD - SDU

1 stop15h 05mUnited Airlines

Deal found 8/13

$733

Sun 9/142:55 pmSDU - ORD

2 stops21h 18mUnited Airlines

Fri 9/193:00 pmORD - SDU

2 stops21h 20mUnited Airlines

Deal found 8/13

$738

One-way flights from Santos Dumont to Chicago
Search for one-way flight options from Santos Dumont to Chicago. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Thu 12/48:05 pmSDU - ORD

2 stops19h 47mLATAM Airlines

Deal found 8/13

$303

Thu 11/208:05 pmSDU - ORD

2 stops19h 47mDelta

Deal found 8/13

$304

Thu 11/208:05 pmSDU - ORD

2 stops19h 47mLATAM Airlines

Deal found 8/14

$309

Thu 12/43:15 pmSDU - ORD

1 stop17h 15mMultiple Airlines

Deal found 8/13

$384

Mon 9/83:15 pmSDU - ORD

2 stops34h 34mGOL

Deal found 8/14

$391

Thu 1/88:15 amSDU - ORD

3 stops55h 15mMultiple Airlines

Deal found 8/14

$428

Sat 10/42:15 pmSDU - ORD

2 stops27h 35mMultiple Airlines

Deal found 8/14

$437

Mon 11/106:50 pmSDU - ORD

3 stops23h 06mMultiple Airlines

Deal found 8/13

$439

Tue 9/28:30 pmSDU - ORD

2 stops42h 45mGOL

Deal found 8/14

$460

Tue 1/68:15 amSDU - ORD

3 stops55h 15mMultiple Airlines

Deal found 8/13

$463

Mon 11/248:05 pmSDU - ORD

2 stops19h 33mDelta

Deal found 8/13

$483

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sun 9/28

6:10 am-5:39 pm

3 stops37h 29m

Chicago O'Hare Intl

Sun 10/5

4:45 pm-10:25 pm

2 stops27h 40m

$668

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Fri 9/5

7:55 am-9:18 am

3 stops27h 23m

Chicago O'Hare Intl

Tue 9/16

6:44 pm-10:25 pm

2 stops25h 41m

$693

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sat 9/27

9:55 am-10:52 am

2 stops26h 57m

Chicago O'Hare Intl

Sat 10/4

6:44 pm-10:25 pm

2 stops25h 41m

$705

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sun 9/14

2:55 pm-6:45 am

1 stop17h 50m

Chicago O'Hare Intl

Fri 9/19

4:00 pm-2:20 pm

2 stops20h 20m

$733

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sun 9/14

2:55 pm-6:45 am

1 stop17h 50m

Chicago O'Hare Intl

Sat 9/20

9:15 pm-5:45 pm

1 stop18h 30m

$733

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Sun 9/14

2:55 pm-6:45 am

1 stop17h 50m

Chicago O'Hare Intl

Thu 9/25

9:15 pm-2:20 pm

1 stop15h 05m

$733

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Thu 12/4

8:05 pm-12:52 pm

2 stops19h 47m

$303

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Tue 11/25

8:05 pm-5:45 pm

2 stops24h 40m

$304

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Thu 11/20

8:05 pm-12:52 pm

2 stops19h 47m

$304

Rio de JaneiroChicago

SDU - ORD

SDUORD

Rio de Janeiro Santos Dumont

Fri 11/21

2:00 pm-12:08 pm

2 stops25h 08m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 16 results

Best time to book a flight from Santos Dumont to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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 Chicago

No data available for this route at this time. Please check back soon.

Related info for your journey

Can I find deals for flights from Santos Dumont to Chicago that include hotel bookings?
Yes. In addition to deals on Santos Dumont to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Santos Dumont to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santos Dumont to Chicago.
Can I find deals for business class flights from Santos Dumont to Chicago?
Yes. Cheapflights offers flight deals from Santos Dumont to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Rio de Janeiro Santos Dumont Airport to Chicago?
Currently, August is the cheapest month in which you can book a flight from Rio de Janeiro Santos Dumont Airport to Chicago (average of $245). Flying from Rio de Janeiro Santos Dumont Airport to Chicago in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Merrillville

Lansing

Hammond

Benton Harbor

Porter

Chesterton

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$303+ Cheap flights from Santos Dumont, Brazil (SDU) to Chicago (CHI)

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Santos Dumont to Chicago with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Santos Dumont to Chicago

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Santos Dumont to Chicago

Cheapest flights from Santos Dumont to ChicagoExplore the most affordable flight options available from Santos Dumont to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Santos Dumont to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Santos Dumont to Chicago

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

Cheapflights Insights

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

Related info for your journey

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

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

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

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

What is the cheapest month to book a flight from Rio de Janeiro Santos Dumont Airport to Chicago?

Traveling to a place near Chicago?

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 Santos Dumont to Chicago

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Santos Dumont to Chicago
Explore the most affordable flight options available from Santos Dumont to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.