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Trieste

$464+ Cheap flights from Illinois to Trieste (TRS)

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TRS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Illinois to Trieste

Keep the following information in mind while searching for Illinois to Trieste flight deals. Data was last updated June 12, 2025.

Round-trip from

$967
(Mytrip)

One-way from

$464
(FlightHub)
From Illinois to Trieste Ronchi dei Legionari
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One-way flight from Illinois to Trieste Ronchi dei Legionari
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Find flight deals from Illinois to Trieste

Cheapest flights from Illinois to Trieste
Explore the most affordable flight options available from Illinois to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:28 pmSTL - TRS
2 stops22h 07mLufthansa
Wed 10/292:45 pmTRS - STL
2 stops32h 29mLufthansa
Deal found 6/10$748
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2511:25 amORD - TRS
2 stops28h 30mMultiple Airlines
Sat 10/116:35 amTRS - ORD
2 stops22h 25mMultiple Airlines
Deal found 6/11$870
This KAYAK deal was found by Cheapflights users on 6/11. 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.
Sun 9/286:00 pmORD - TRS
2 stops41h 35mTAP AIR PORTUGAL
Mon 10/133:15 pmTRS - ORD
2 stops55h 55mTAP AIR PORTUGAL
Deal found 6/11$985
This Gurufare deal was found by Cheapflights users on 6/12. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:00 pmORD - TRS
1 stop15h 05mLufthansa
Tue 9/302:45 pmTRS - ORD
1 stop12h 10mLufthansa
Deal found 6/12$997
This Turkish Airlines deal was found by Cheapflights users on 6/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:25 amORD - TRS
2 stops24h 10mTurkish Airlines
Thu 10/911:15 amTRS - ORD
2 stops37h 40mTurkish Airlines
Deal found 6/11$1,004
This oojo deal was found by Cheapflights users on 6/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/113:00 pmORD - TRS
1 stop12h 25mITA Airways
Thu 8/147:15 pmTRS - ORD
1 stop24h 55mITA Airways
Deal found 6/10$1,045
This Austrian Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 10/44:20 pmORD - TRS
2 stops19h 15mAustrian Airlines
Wed 10/157:25 pmTRS - ORD
2 stops24h 55mAustrian Airlines
Deal found 6/12$1,309
This Delta deal was found by Cheapflights users on 6/11. 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.
Mon 7/211:09 pmMDW - TRS
2 stops18h 21mDelta
Mon 7/286:35 amTRS - MDW
2 stops22h 07mDelta
Deal found 6/11$1,705
This Emirates deal was found by Cheapflights users on 6/12. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/258:35 pmORD - TRS
2 stops43h 20mEmirates
Sat 6/2811:15 amTRS - ORD
2 stops35h 30mEmirates
Deal found 6/12$2,965

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Trieste 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 June 12, 2025.
Use the filters below to find and compare flights from Illinois to Trieste that are best for you.

Fly from

Illinois

Fly to

Trieste

Route

Depart

Return

Price

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 9/25

11:25 am-10:55 pm

2 stops28h 30m

Trieste Ronchi dei Legionari

Sat 10/11

6:35 am-10:00 pm

2 stops22h 25m

$870

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 9/28

6:00 pm-6:35 pm

2 stops41h 35m

Trieste Ronchi dei Legionari

Mon 10/13

3:15 pm-4:10 pm

2 stops55h 55m

$985

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 9/23

4:00 pm-2:05 pm

1 stop15h 05m

Trieste Ronchi dei Legionari

Tue 9/30

2:45 pm-7:55 pm

1 stop12h 10m

$997

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 9/24

11:25 am-6:35 pm

2 stops24h 10m

Trieste Ronchi dei Legionari

Thu 10/9

11:15 am-5:55 pm

2 stops37h 40m

$1,004

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 8/11

3:00 pm-10:25 am

1 stop12h 25m

Trieste Ronchi dei Legionari

Thu 8/14

7:15 pm-1:10 pm

1 stop24h 55m

$1,045

St. LouisTrieste

STL - TRS

STLTRS

Lambert-St Louis

Sat 7/5

5:30 pm-10:25 pm

2 stops21h 55m

Trieste Ronchi dei Legionari

Tue 7/15

6:30 am-3:47 pm

2 stops16h 17m

$1,123

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sat 10/4

4:20 pm-6:35 pm

2 stops19h 15m

Trieste Ronchi dei Legionari

Wed 10/15

7:25 pm-1:20 pm

2 stops24h 55m

$1,309

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Mon 7/21

1:09 pm-2:30 pm

2 stops18h 21m

Trieste Ronchi dei Legionari

Mon 7/28

6:35 am-9:42 pm

2 stops22h 07m

$1,705

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 6/25

8:35 pm-10:55 pm

2 stops43h 20m

Trieste Ronchi dei Legionari

Sat 6/28

11:15 am-3:45 pm

2 stops35h 30m

$2,965

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 7/1

10:35 am-2:30 pm

2 stops20h 55m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 15 results
1
2

Best time to book a flight from Illinois to Trieste

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

Rainfall in Trieste by month

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

In terms of precipitation, rainfall in Trieste ranges from 2.4 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit Trieste when rainfall is around 2.4 in.

Temperature in Trieste by month

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

If weather is an important factor for your trip to Trieste, 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 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. 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 Trieste. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Emirates, Delta and Austrian Airlines from Illinois to Trieste by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Delta
8.0
Very good
7,950 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Austrian Airlines
7.6
Good
802 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Turkish Airlines
7.3
Good
3,848 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
TAP AIR PORTUGAL
7.1
Good
1,885 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

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

    Located just 18.2 mi from the city center, Trieste Ronchi dei Legionari (TRS) is the airport most travelers will use when flying to Trieste from Illinois.

  • What are the cheapest airlines to fly from Illinois to Trieste one-way?

    $464 is the cheapest one-way deal found within the past few days, from ITA Airways. You may also be able to find cheap deals on TAP AIR PORTUGAL and Delta, with prices starting from $567 and $729, respectively.

  • What are the most popular routes from Illinois to Trieste?

    The most popular route from Illinois to Trieste is Chicago O'Hare Intl - Trieste Ronchi dei Legionari. You may also consider Chicago Midway - Trieste Ronchi dei Legionari or Lambert-St Louis - Trieste Ronchi dei Legionari.

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

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

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

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

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

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

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