HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santarém

$1,228+ Cheap flights from Illinois to Santarém (STM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STM
Dec 8 — Dec 151
Mon 12/8
Mon 12/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Santarém 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.

Find flight deals from Illinois to Santarém

Best flights from Illinois to Santarém
Discover carefully curated flight deals from Illinois to Santarém that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 8, 2025.

This GOL deal was found by Cheapflights users on 11/6. 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 GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:26 pmORD - STM
3 stops41h 34mGOL
Sun 2/222:45 pmSTM - ORD
3 stops33h 40mGOL
Deal found 11/6$1,228
This Ovago deal was found by Cheapflights users on 11/7. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/110:11 amORD - STM
3 stops24h 49mGOL
Thu 1/152:45 pmSTM - ORD
3 stops23h 20mGOL
Deal found 11/7$1,906

Cheap flight deals from Illinois to Santarém

Keep the following information in mind while searching for Illinois to Santarém flight deals. Data was last updated November 8, 2025.

Round-trip from

$1,228
(GOL)
From Illinois to Santarém Maestro Wilson Fonseca
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Santarém 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 November 8, 2025.
Use the filters below to find and compare flights from Illinois to Santarém that are best for you.

Fly from

Illinois

Fly to

Santarém

Route

Depart

Return

Price

ChicagoSantarém

ORD - STM

ORDSTM

Chicago O'Hare Intl

Wed 2/18

5:26 pm-2:00 pm

3 stops41h 34m

Santarém Maestro Wilson Fonseca

Sun 2/22

2:45 pm-9:25 pm

3 stops33h 40m

$1,228

ChicagoSantarém

ORD - STM

ORDSTM

Chicago O'Hare Intl

Thu 1/1

10:11 am-2:00 pm

3 stops24h 49m

Santarém Maestro Wilson Fonseca

Thu 1/15

2:45 pm-11:05 am

3 stops23h 20m

$1,906

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Best time to book a flight from Illinois to Santarém

Have a flexible travel schedule? Discover the best time to fly to Santarém 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 Santarém
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 Illinois to Santarém. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Santarém from Illinois?

    Located just 6.0 mi from the city center, Santarém Maestro Wilson Fonseca (STM) is the airport most travelers will use when flying to Santarém from Illinois.

  • How long is the flight from Illinois to Santarém?

    For as low as $1,228, GOL can have you in Santarém from Illinois in 41h 34m. Illinois and Santarém are separated by a distance of 3699 mi.

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

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

  • How can I find direct flights from Illinois to Santarém?

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

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

    Yes. Cheapflights offers flight deals from Illinois to Santarém 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

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.

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.