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Trieste

$541+ 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
abr. 8 — abr. 151
mar. 4/8
mar. 4/15
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 abril 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$815
(Gurufare)

One-way from

$541
(Cheapflightsfares)
Provider with most accurate pricing for Chicago (CHI)-Trieste Ronchi dei Legionari flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Trieste Ronchi dei Legionari flights.
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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 abril 3, 2025.

This Gurufare deal was found by Cheapflights users on 4/3. 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.
mar. 9/234:00 pmORD - TRS
1 stop15h 05mLufthansa
mar. 9/306:30 amTRS - ORD
1 stop20h 25mLufthansa
Deal found 4/3$815
This Condor 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/156:15 amORD - TRS
2 stops24h 50mMultiple Airlines
jue. 5/226:30 amTRS - ORD
2 stops19h 06mMultiple Airlines
Deal found 4/2$836
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.
vie. 5/21:50 pmORD - TRS
2 stops17h 40mITA Airways
vie. 5/96:35 amTRS - ORD
1 stop13h 35mITA Airways
Deal found 4/2$957
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/54:55 pmORD - TRS
2 stops38h 35mTAP AIR PORTUGAL
mié. 6/253:15 pmTRS - ORD
2 stops31h 55mTAP AIR PORTUGAL
Deal found 4/2$1,344
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/207:25 pmORD - TRS
2 stops16h 05mIcelandair
mié. 7/211:15 amTRS - ORD
2 stops17h 00mIcelandair
Deal found 4/2$1,482
This Austrian Airlines 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/154:20 pmORD - TRS
2 stops23h 35mAustrian Airlines
mié. 5/287:15 pmTRS - ORD
2 stops25h 05mAustrian Airlines
Deal found 4/2$1,688
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.
jue. 5/1510:25 amMDW - TRS
2 stops21h 00mDelta
jue. 5/226:35 amTRS - MDW
2 stops18h 01mDelta
Deal found 4/2$1,722

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 abril 3, 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

mar. 9/23

4:00 pm-2:05 pm

1 stop15h 05m

Trieste Ronchi dei Legionari

mar. 9/30

6:30 am-7:55 pm

1 stop20h 25m

$815

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

jue. 5/15

6:15 am-2:05 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

jue. 5/22

6:30 am-6:36 pm

2 stops19h 06m

$836

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

vie. 5/2

1:50 pm-2:30 pm

2 stops17h 40m

Trieste Ronchi dei Legionari

vie. 5/9

6:35 am-1:10 pm

1 stop13h 35m

$957

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

jue. 6/5

4:55 pm-2:30 pm

2 stops38h 35m

Trieste Ronchi dei Legionari

mié. 6/25

3:15 pm-4:10 pm

2 stops31h 55m

$1,344

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

vie. 6/20

7:25 pm-6:30 pm

2 stops16h 05m

Trieste Ronchi dei Legionari

mié. 7/2

11:15 am-9:15 pm

2 stops17h 00m

$1,482

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

jue. 5/15

4:20 pm-10:55 pm

2 stops23h 35m

Trieste Ronchi dei Legionari

mié. 5/28

7:15 pm-1:20 pm

2 stops25h 05m

$1,688

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

jue. 5/15

10:25 am-2:25 pm

2 stops21h 00m

Trieste Ronchi dei Legionari

jue. 5/22

6:35 am-5:36 pm

2 stops18h 01m

$1,722

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

mar. 7/1

7:00 am-6:30 pm

2 stops28h 30m

$541

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

mar. 7/1

4:00 pm-2:05 pm

1 stop15h 05m

$611

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

mar. 7/1

1:09 pm-2:25 pm

2 stops18h 16m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 11 results
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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 abril 3, 2025.
Delta
8.0
Very good
7,897 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

8.0

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

8.0

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.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,897 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

8.0

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.
Austrian Airlines
7.6
Good
771 reviews
Delta
8.0
Very good
7,897 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

8.0

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.
TAP AIR PORTUGAL
7.1
Good
1,833 reviews
Delta
8.0
Very good
7,897 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

8.0

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.
Icelandair
7.0
Good
476 reviews
Delta
8.0
Very good
7,897 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

8.0

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 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?

    $541 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 Lufthansa and Delta, with prices starting from $611 and $853, 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.

See more FAQs

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Alternative routes for Illinois to Trieste

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Top airline flying from Illinois to Trieste

Discover the top airline that operate flights from Illinois to Trieste. 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 abril 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$739Average$1,064FlexibilityNo cancel feeOn-time81%

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