HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Iaşi

$587+ Cheap flights from Illinois to Iaşi (IAS)

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAS
Nov 16 — Nov 231
Sun 11/16
Sun 11/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Iaşi 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 Iaşi

Keep the following information in mind while searching for Illinois to Iaşi flight deals. Data was last updated October 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$587
(KAYAK)
Provider with most accurate pricing for Chicago (CHI)-Iasi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Iasi flights.
Search Deals
From Illinois to Iasi
Search Deals

Find flight deals from Illinois to Iaşi

Cheapest flights from Illinois to Iaşi
Explore the most affordable flight options available from Illinois to Iaşi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 17, 2025.

This KAYAK deal was found by Cheapflights users on 10/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:50 pmORD - IAS
2 stops33h 30mLufthansa
Sun 1/114:05 pmIAS - ORD
2 stops34h 20mLufthansa
Deal found 10/15$587
This Lufthansa deal was found by Cheapflights users on 10/15. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:35 pmORD - IAS
2 stops32h 45mLufthansa
Sun 12/74:05 pmIAS - ORD
2 stops36h 00mLufthansa
Deal found 10/15$592
This KAYAK deal was found by Cheapflights users on 10/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/104:20 pmORD - IAS
1 stop15h 00mAustrian Airlines
Sun 1/114:05 pmIAS - ORD
2 stops34h 32mAustrian Airlines
Deal found 10/15$647
This Austrian Airlines deal was found by Cheapflights users on 10/14. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/34:20 pmORD - IAS
1 stop15h 00mAustrian Airlines
Sun 12/74:05 pmIAS - ORD
1 stop29h 55mAustrian Airlines
Deal found 10/14$651
This Booking.com deal was found by Cheapflights users on 10/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:40 pmORD - IAS
2 stops33h 05mMultiple Airlines
Sat 1/105:25 amIAS - ORD
2 stops45h 20mMultiple Airlines
Deal found 10/14$1,154

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Iaşi 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 October 17, 2025.
Use the filters below to find and compare flights from Illinois to Iaşi that are best for you.

Fly from

Illinois

Fly to

Iaşi

Route

Depart

Return

Price

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

10:35 pm-3:20 pm

2 stops32h 45m

Iasi

Sun 12/7

4:05 pm-8:05 pm

2 stops36h 00m

$592

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/10

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Sun 1/11

4:05 pm-6:37 pm

2 stops34h 32m

$647

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Sun 12/7

4:05 pm-2:00 pm

1 stop29h 55m

$651

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Thu 12/25

8:40 pm-1:45 pm

2 stops33h 05m

Iasi

Sat 1/10

5:25 am-6:45 pm

2 stops45h 20m

$1,154

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Best time to book a flight from Illinois to Iaşi

Have a flexible travel schedule? Discover the best time to fly to Iaşi 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 Iaşi
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 Iaşi. 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 Iaşi from Illinois?

    For a flight from Illinois to Iaşi, you will be flying into Iasi. Iasi (IAS) is just 1.3 mi from the center of the city.

  • How long is the flight from Illinois to Iaşi?

    There are many flights that can get you from Illinois to Iaşi in 15h. Fly via Lufthansa or Austrian Airlines to get the fastest option. Illinois and Iaşi are separated by a distance of 5121 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Iaşi 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.

Alternative routes for Illinois to Iaşi

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Otopeni Intl flights
Newark to Otopeni Intl flights
Dulles Intl to Otopeni Intl flights
LaGuardia to Otopeni Intl flights
Boston to Otopeni Intl flights
Reagan-National to Otopeni Intl flights
Miami to Otopeni Intl flights
Baltimore to Otopeni Intl flights
O'Hare Intl to Otopeni Intl flights
Dallas/Fort Worth to Otopeni Intl flights
Los Angeles to Otopeni Intl flights
Atlanta to Otopeni Intl flights
San Francisco to Otopeni Intl flights
Portland to Otopeni Intl flights
John F Kennedy Intl to Cluj Napoca flights
Tampa to Otopeni Intl flights
Ontario to Otopeni Intl flights
Hobby to Otopeni Intl flights
Newark to Cluj Napoca flights
Detroit to Otopeni Intl flights
Midway to Otopeni Intl flights
Charlotte to Otopeni Intl flights
Fort Lauderdale to Otopeni Intl flights
O'Hare Intl to Oradea flights
Orlando to Otopeni Intl flights
Seattle to Cluj Napoca flights
Seattle to Otopeni Intl flights
George Bush Intcntl to Otopeni Intl flights
Cleveland to Otopeni Intl flights
Love Field to Otopeni Intl flights
LaGuardia to Cluj Napoca flights
Miami to Sibiu flights
Minneapolis to Otopeni Intl flights
Raleigh to Otopeni Intl flights
San Jose to Otopeni Intl flights
Detroit to Cluj Napoca flights
Las Vegas to Otopeni Intl flights
Santa Ana to Otopeni Intl flights
Tallahassee to Otopeni Intl flights
Denver to Otopeni Intl flights
Dulles Intl to Cluj Napoca flights
O'Hare Intl to Cluj Napoca flights
Reagan-National to Cluj Napoca flights
Oakland to Otopeni Intl flights
Austin to Otopeni Intl flights
Sky Harbor Intl to Otopeni Intl flights
Indianapolis to Otopeni Intl flights
Los Angeles to Timisoara flights
Atlanta to Cluj Napoca flights
Charlotte to Cluj Napoca flights

Top airline flying from Illinois to Iaşi

Discover the top airline that operate flights from Illinois to Iaşi. 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 October 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest$613Average$830FlexibilityNo cancel feeOn-time78%

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.