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$541+ Cheap flights from Trieste (TRS) to Illinois

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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — ORD
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
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Cheap flight deals from Trieste to Illinois

Keep the following information in mind while searching for Trieste to Illinois flight deals. Data was last updated April 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$541
(ITA Airways)
Provider with most accurate pricing for Trieste Ronchi dei Legionari-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Trieste Ronchi dei Legionari-Chicago (CHI) flights.
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From Trieste Ronchi dei Legionari to Illinois
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Find flight deals from Trieste to Illinois

Cheapest flights from Trieste to Illinois
Explore the most affordable flight options available from Trieste to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

This ITA Airways deal was found by Cheapflights users on 4/2. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:25 pmTRS - ORD
1 stop24h 45mITA Airways
Sun 9/283:00 pmORD - TRS
1 stop16h 30mITA Airways
Deal found 4/2$541
This Delta deal was found by Cheapflights users on 4/2. 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.
Sat 5/176:35 amTRS - ORD
2 stops19h 13mDelta
Sat 5/247:00 amORD - TRS
2 stops20h 25mDelta
Deal found 4/2$701
This Lufthansa deal was found by Cheapflights users on 4/1. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/166:30 amTRS - ORD
2 stops39h 06mLufthansa
Sun 4/204:00 pmORD - TRS
1 stop15h 05mLufthansa
Deal found 4/1$715
This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/173:15 pmTRS - ORD
3 stops29h 55mMultiple Airlines
Sat 5/244:20 pmORD - TRS
2 stops23h 05mMultiple Airlines
Deal found 4/2$969

Cheapflights Fare Finder

Customize your flight search to find flights from Trieste to Illinois 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 April 3, 2025.
Use the filters below to find and compare flights from Trieste to Illinois that are best for you.

Fly from

Trieste

Fly to

Illinois

Route

Depart

Return

Price

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 9/20

7:25 pm-1:10 pm

1 stop24h 45m

Chicago O'Hare Intl

Sun 9/28

3:00 pm-2:30 pm

1 stop16h 30m

$541

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 5/17

6:35 am-6:48 pm

2 stops19h 13m

Chicago O'Hare Intl

Sat 5/24

7:00 am-10:25 am

2 stops20h 25m

$701

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Wed 4/16

6:30 am-2:36 pm

2 stops39h 06m

Chicago O'Hare Intl

Sun 4/20

4:00 pm-2:05 pm

1 stop15h 05m

$715

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 5/17

3:15 pm-2:10 pm

3 stops29h 55m

Chicago O'Hare Intl

Sat 5/24

4:20 pm-10:25 pm

2 stops23h 05m

$969

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Best time to book a flight from Trieste to Illinois

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

What is the cheapest month to book a flight from Trieste to Illinois?

Currently, August is the cheapest month in which you can book a flight from Trieste to Illinois (average of $245). Flying from Trieste to Illinois 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.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois 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 Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 3, 2025.
Delta
8.0
Very good
7,897 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
ITA Airways
6.7
Okay
952 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Lufthansa
6.7
Okay
6,963 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Trieste to Illinois. 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 from for flights from Trieste to Illinois?

    Trieste Ronchi dei Legionari (TRS), located 18.2 mi from the city center, is the airport you fly out of when you book flights from Trieste to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Trieste to Illinois 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 Trieste to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Trieste to Illinois (average of $245). Flying from Trieste to Illinois 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

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