HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santiago de los Caballeros

$217+ Cheap flights from Illinois to Santiago de los Caballeros (STI)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STI
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Santiago de los Caballeros 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 Illinois to Santiago de los Caballeros

Keep the following information in mind while searching for Illinois to Santiago de los Caballeros flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$393
(American Airlines)

One-way from

$217
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$473
Provider with most accurate pricing for Chicago (CHI)-Santiago de los Caballeros flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Santiago de los Caballeros flights.
Search Deals
From Illinois to Santiago de los Caballeros
Search Deals
One-way flight from Illinois to Santiago de los Caballeros
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

Find flight deals from Illinois to Santiago de los Caballeros

Cheapest flights from Illinois to Santiago de los Caballeros
Explore the most affordable flight options available from Illinois to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/106:00 amORD - STI
1 stop13h 48mAmerican Airlines
Sat 8/161:31 pmSTI - ORD
1 stop11h 26mAmerican Airlines
Deal found 4/29$393
This eDestinos deal was found by Cheapflights users on 4/29. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/295:05 amORD - STI
1 stop8h 43mSpirit Airlines
Thu 6/53:53 pmSTI - ORD
1 stop9h 12mSpirit Airlines
Deal found 4/29$396
This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/87:00 amORD - STI
1 stop9h 50mDelta
Wed 5/146:11 amSTI - ORD
1 stop12h 18mDelta
Deal found 5/1$403
This JetBlue deal was found by Cheapflights users on 4/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/46:15 amORD - STI
1 stop13h 15mJetBlue
Wed 6/115:20 amSTI - ORD
1 stop10h 44mJetBlue
Deal found 4/30$470
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/289:20 amMDW - STI
2 stops13h 54mDelta
Wed 6/46:11 amSTI - MDW
2 stops12h 34mDelta
Deal found 4/30$481
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:00 amORD - STI
1 stop8h 12mUnited Airlines
Mon 5/124:23 pmSTI - ORD
1 stop8h 16mUnited Airlines
Deal found 4/30$504

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Santiago de los Caballeros 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 May 1, 2025.
Use the filters below to find and compare flights from Illinois to Santiago de los Caballeros that are best for you.

Fly from

Illinois

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Sun 8/10

6:00 am-8:48 pm

1 stop13h 48m

Santiago de los Caballeros

Sat 8/16

1:31 pm-11:57 pm

1 stop11h 26m

$393

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Thu 5/29

5:05 am-2:48 pm

1 stop8h 43m

Santiago de los Caballeros

Thu 6/5

3:53 pm-12:05 am

1 stop9h 12m

$396

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Wed 5/28

1:30 pm-12:14 am

1 stop9h 44m

Santiago de los Caballeros

Wed 6/4

6:11 am-5:29 pm

1 stop12h 18m

$403

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Wed 6/4

6:15 am-8:30 pm

1 stop13h 15m

Santiago de los Caballeros

Wed 6/11

5:20 am-3:04 pm

1 stop10h 44m

$470

ChicagoSantiago de los Caballeros

MDW - STI

MDWSTI

Chicago Midway

Wed 5/28

9:20 am-12:14 am

2 stops13h 54m

Santiago de los Caballeros

Wed 6/4

6:11 am-5:45 pm

2 stops12h 34m

$481

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Tue 10/14

6:34 pm-11:24 am

1 stop15h 50m

$217

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Tue 10/14

7:00 am-6:38 pm

2 stops10h 38m

$235

St. LouisSantiago de los Caballeros

STL - STI

STLSTI

Lambert-St Louis

Thu 7/10

4:28 pm-12:29 pm

2 stops19h 01m

$276

St. LouisSantiago de los Caballeros

STL - STI

STLSTI

Lambert-St Louis

Thu 7/10

7:37 pm-1:00 pm

3 stops40h 23m

$767

ChicagoSantiago de los Caballeros

ORD - STI

ORDSTI

Chicago O'Hare Intl

Tue 10/14

9:04 am-1:46 am

3 stops15h 42m

$2,653

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Best time to book a flight from Illinois to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros 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 Santiago de los Caballeros

What is the cheapest month to book a flight from Illinois to Santiago de los Caballeros?

Currently, May is the cheapest month in which you can book a flight from Illinois to Santiago de los Caballeros (average of $347). Flying from Illinois to Santiago de los Caballeros in July is currently the most expensive (average of $631). 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.

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

Find hourly flight availability from Illinois to Santiago de los Caballeros. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Santiago de los Caballeros as you normally would.

Rainfall in Santiago de los Caballeros by month

Plan your trip to Santiago de los Caballeros by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Santiago de los Caballeros ranges from 3.0 - 11.6 inches per month. December is typically the wettest month, when rainfall can reach 11.6 in. July is typically the driest time to visit Santiago de los Caballeros when rainfall is around 3.0 in.

Temperature in Santiago de los Caballeros by month

Plan your trip to Santiago de los Caballeros by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Santiago de los Caballeros, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 73.4 F).

Reviews of airlines servicing Santiago de los Caballeros

Get insights into the airlines that provide service to Santiago de los Caballeros. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santiago de los Caballeros. Reviews last updated May 1, 2025.
Read reviews from past customers who have flown Delta, United Airlines and JetBlue from Illinois to Santiago de los Caballeros. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.3
Good
2,923 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Spirit Airlines
6.3
Okay
7,963 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Santiago de los Caballeros. 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 Santiago de los Caballeros from Illinois?

    Santiago de los Caballeros (STI) is the airport you will fly into if you book a flight from Illinois to Santiago de los Caballeros. It is only a 6.8 mi journey from Santiago (STI) to Santiago de los Caballeros’s city center.

  • What are the cheapest airlines to fly from Illinois to Santiago de los Caballeros one-way?

    The cheapest airlines for a one-way flight from Illinois to Santiago de los Caballeros are Spirit Airlines ($217), Delta ($235), and American Airlines ($276).

  • What are the most popular routes from Illinois to Santiago de los Caballeros?

    The most popular flight routes from Illinois to Santiago de los Caballeros are Chicago O'Hare Intl - Santiago de los Caballeros, Chicago Midway - Santiago de los Caballeros and Lambert-St Louis - Santiago de los Caballeros.

  • Can I find deals for flights from Illinois to Santiago de los Caballeros that include hotel bookings?

    Yes. In addition to deals on Illinois to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Santiago de los Caballeros?

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

  • Can I find deals for business class flights from Illinois to Santiago de los Caballeros?

    Yes. Cheapflights offers flight deals from Illinois to Santiago de los Caballeros 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 Illinois to Santiago de los Caballeros?

    Currently, May is the cheapest month in which you can book a flight from Illinois to Santiago de los Caballeros (average of $347). Flying from Illinois to Santiago de los Caballeros in July is currently the most expensive (average of $631). 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

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 Santiago de los Caballeros

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Santiago de los Caballeros flights
John F Kennedy Intl to Punta Cana flights
Newark to Santiago de los Caballeros flights
Newark to Punta Cana flights
John F Kennedy Intl to Santo Domingo flights
Newark to Santo Domingo flights
LaGuardia to Punta Cana flights
Dulles Intl to Punta Cana flights
Atlanta to Punta Cana flights
O'Hare Intl to Punta Cana flights
LaGuardia to Santo Domingo flights
Boston to Punta Cana flights
Dallas/Fort Worth to Punta Cana flights
Philadelphia to Punta Cana flights
Boston to Santo Domingo flights
Orlando to Punta Cana flights
LaGuardia to Santiago de los Caballeros flights
Fort Lauderdale to Punta Cana flights
Hobby to Punta Cana flights
John F Kennedy Intl to Puerto Plata flights
Baltimore to Punta Cana flights
Charlotte to Punta Cana flights
Orlando to Santo Domingo flights
Reagan-National to Punta Cana flights
Fort Lauderdale to Santo Domingo flights
George Bush Intcntl to Punta Cana flights
Miami to Punta Cana flights
Boston to Santiago de los Caballeros flights
Orlando to Santiago de los Caballeros flights
Atlanta to Santo Domingo flights
Midway to Punta Cana flights
Los Angeles to Punta Cana flights
Miami to Santo Domingo flights
Miami to Santiago de los Caballeros flights
Baltimore to Santo Domingo flights
Cleveland to Punta Cana flights
Dulles Intl to Santo Domingo flights
Dallas/Fort Worth to Santo Domingo flights
Philadelphia to Santo Domingo flights
Denver to Punta Cana flights
New Orleans to Punta Cana flights
Minneapolis to Punta Cana flights
San Francisco to Punta Cana flights
Atlantic City to Punta Cana flights
Tampa to Punta Cana flights
Los Angeles to Santo Domingo flights
LaGuardia to Puerto Plata flights
Ontario to Punta Cana flights
Fort Lauderdale to Santiago de los Caballeros flights
Reagan-National to Santo Domingo flights

Top 4 airlines flying from Illinois to Santiago de los Caballeros

Discover the top 4 airlines that operate flights from Illinois to Santiago de los Caballeros. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$226Average$662FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$343Average$472FlexibilityNo cancel feeOn-time62%
DeltaCheapest$345Average$437FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$395Average$772FlexibilityNo cancel feeOn-time71%

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.
Site
Privacy Preferences©2025 Cheapflights