How long does it take to fly to Trieste?

Average flight duration from Illinois to Trieste depends on which airport you fly into and out of. Flying from Chicago to Venice Marco Polo Airport is 14h 22m on average, while flying from Moline to Venice Marco Polo Airport is 18h 46m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

What airlines fly to Trieste?

Turkish Airlines, Lufthansa and Scandinavian Airlines are the top three most popular airlines that fly to Trieste from Illinois according to our data. Turkish Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 12 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Illinois to Trieste Ronchi dei Legionari Airport?

Prices for flights from Illinois to Trieste Ronchi dei Legionari Airport are updated daily.

How old do you have to be to fly from Illinois to Trieste Ronchi dei Legionari Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Trieste Ronchi dei Legionari Airport.

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$560 Cheap Flights from Illinois to Trieste in 2025/26

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Find the cheapest flights from Illinois to Trieste

Round-trip

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1:15 pm - 10:40 pmSTL-TRS

26h 25m2 stops

11:15 am - 12:05 amTRS-STL

43h 50m2 stops

$560Lufthansa

Find Deal

Wed, Feb 11 - Sun, Feb 15

12:44 pm - 10:40 pmSTL-TRS

26h 56m2 stops

3:00 pm - 10:00 pmTRS-STL

38h 00m2 stops

$572Lufthansa

Find Deal

Wed, Feb 11 - Sun, Feb 15

6:42 pm - 10:40 pmSTL-TRS

20h 58m2 stops

3:00 pm - 9:40 pmTRS-STL

37h 40m2 stops

$772Lufthansa

Find Deal

Wed, Dec 3 - Sun, Dec 7

6:50 pm - 6:30 pmORD-TRS

40h 40m2 stops

3:15 pm - 4:20 pmTRS-ORD

56h 05m2 stops

$857SWISS

Find Deal

Wed, Jan 28 - Sun, Feb 1

4:10 pm - 6:30 pmORD-TRS

19h 20m2 stops

3:15 pm - 4:20 pmTRS-ORD

56h 05m2 stops

$858SWISS

Find Deal

Wed, Jan 28 - Sun, Feb 1

4:20 pm - 2:10 pmORD-TRS

14h 50m1 stop

3:15 pm - 6:25 pmTRS-ORD

58h 10m2 stops

$860Lufthansa

Find Deal

Wed, Jan 28 - Sun, Feb 1

3:45 pm - 10:55 pmORD-TRS

24h 10m1 stop

6:15 am - 1:10 pmTRS-ORD

13h 55m1 stop

$870Multiple Airlines

Find Deal

Tue, Dec 16 - Tue, Dec 23

10:35 am - 2:05 pmORD-TRS

20h 30m2 stops

7:15 pm - 4:20 pmTRS-ORD

52h 05m2 stops

$875Multiple Airlines

Find Deal

Fri, Feb 6 - Sun, Feb 15

12:48 pm - 10:55 pmMDW-TRS

27h 07m2 stops

3:15 pm - 10:22 pmTRS-MDW

38h 07m2 stops

$967KLM

Find Deal

Wed, Jan 28 - Sun, Feb 1

1:14 pm - 6:30 pmMDW-TRS

22h 16m2 stops

6:35 am - 5:26 pmTRS-MDW

17h 51m2 stops

$980KLM

Find Deal

Tue, Dec 16 - Tue, Dec 23

Lufthansa flights from Illinois to Trieste

Our best Lufthansa deals on Illinois to Trieste flight tickets

Lufthansa

Feb 11

STL12:44 pmLambert-St Louis

26h 56m

2 stops

TRS10:40 pmTrieste Ronchi dei Legionari

Feb 15

TRS11:15 amTrieste Ronchi dei Legionari

43h 50m

2 stops

STL12:05 amLambert-St Louis

$559

Find similar

Lufthansa

Feb 11

STL1:15 pmLambert-St Louis

26h 25m

2 stops

TRS10:40 pmTrieste Ronchi dei Legionari

Feb 15

TRS11:15 amTrieste Ronchi dei Legionari

43h 50m

2 stops

STL12:05 amLambert-St Louis

$560

Find similar

Lufthansa

Feb 11

STL12:44 pmLambert-St Louis

26h 56m

2 stops

TRS10:40 pmTrieste Ronchi dei Legionari

Feb 15

TRS3:00 pmTrieste Ronchi dei Legionari

38h 00m

2 stops

STL10:00 pmLambert-St Louis

$572

Find similar

SWISS flights from Illinois to Trieste

Our best SWISS deals on Illinois to Trieste flight tickets

SWISS

Jan 28

ORD6:50 pmChicago O'Hare Intl

40h 40m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Feb 1

TRS3:15 pmTrieste Ronchi dei Legionari

56h 05m

2 stops

ORD4:20 pmChicago O'Hare Intl

$857

Find similar

SWISS

Jan 28

ORD4:10 pmChicago O'Hare Intl

19h 20m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Feb 1

TRS3:15 pmTrieste Ronchi dei Legionari

56h 05m

2 stops

ORD4:20 pmChicago O'Hare Intl

$858

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTrieste

STL - TRS

STLTRS

Lambert-St Louis

Wed 2/11

1:15 pm-10:40 pm

2 stops26h 25m

Trieste Ronchi dei Legionari

Sun 2/15

11:15 am-12:05 am

2 stops43h 50m

$560

St. LouisTrieste

STL - TRS

STLTRS

Lambert-St Louis

Wed 2/11

12:44 pm-10:40 pm

2 stops26h 56m

Trieste Ronchi dei Legionari

Sun 2/15

3:00 pm-10:00 pm

2 stops38h 00m

$572

St. LouisTrieste

STL - TRS

STLTRS

Lambert-St Louis

Wed 12/3

6:42 pm-10:40 pm

2 stops20h 58m

Trieste Ronchi dei Legionari

Sun 12/7

3:00 pm-9:40 pm

2 stops37h 40m

$772

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 1/28

6:50 pm-6:30 pm

2 stops40h 40m

Trieste Ronchi dei Legionari

Sun 2/1

3:15 pm-4:20 pm

2 stops56h 05m

$857

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 1/28

4:10 pm-6:30 pm

2 stops19h 20m

Trieste Ronchi dei Legionari

Sun 2/1

3:15 pm-4:20 pm

2 stops56h 05m

$858

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 1/28

4:20 pm-2:10 pm

1 stop14h 50m

Trieste Ronchi dei Legionari

Sun 2/1

3:15 pm-6:25 pm

2 stops58h 10m

$860

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 12/16

3:45 pm-10:55 pm

1 stop24h 10m

Trieste Ronchi dei Legionari

Tue 12/23

6:15 am-1:10 pm

1 stop13h 55m

$870

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 2/6

10:35 am-2:05 pm

2 stops20h 30m

Trieste Ronchi dei Legionari

Sun 2/15

7:15 pm-4:20 pm

2 stops52h 05m

$875

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Wed 1/28

12:48 pm-10:55 pm

2 stops27h 07m

Trieste Ronchi dei Legionari

Sun 2/1

3:15 pm-10:22 pm

2 stops38h 07m

$967

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Tue 12/16

1:14 pm-6:30 pm

2 stops22h 16m

Trieste Ronchi dei Legionari

Tue 12/23

6:35 am-5:26 pm

2 stops17h 51m

$980

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How to get the cheapest flight ticket from Illinois to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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Other information

What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Thursday when prices can be found for as low as $915. This is often the case because there is less demand to fly during this day of the week. Flights from Illinois to Trieste on a Saturday will generally be more expensive and average around $1,563. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Can stopping save me money on Illinois to Trieste flights?

You could potentially save up to 62% on your flight if you consider stops on a Illinois to Trieste flight.

Cheap Illinois to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Trieste

Direct flights	None

There are no direct flights from Illinois to Trieste. There are no popular flight routes from Illinois to Trieste.

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When did momondo last update prices for flights from Illinois to Trieste Ronchi dei Legionari Airport?
Prices for flights from Illinois to Trieste Ronchi dei Legionari Airport are updated daily.
How old do you have to be to fly from Illinois to Trieste Ronchi dei Legionari Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Trieste Ronchi dei Legionari Airport.
What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?
The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Udine

Grado

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Trieste?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Trieste for you.

Can I find flights from Illinois to Trieste with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Trieste flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Trieste?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Trieste.

I’m not ready to book a flight from Illinois to Trieste right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Trieste now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Trieste and let you know when they change.

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Cheap flights from Illinois to Trieste from $560

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Trieste departing on 2/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Illinois to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Trieste?

Can stopping save me money on Illinois to Trieste flights?

You could potentially save up to 62% on your flight if you consider stops on a Illinois to Trieste flight.

What airlines fly to Trieste?

How long does it take to fly to Trieste?

Cheap Illinois to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Trieste

Direct flights

When did momondo last update prices for flights from Illinois to Trieste Ronchi dei Legionari Airport?

How old do you have to be to fly from Illinois to Trieste Ronchi dei Legionari Airport?

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

Traveling to a place near Trieste?

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Trieste?

Can I find flights from Illinois to Trieste with flexible booking policies on momondo?

How can momondo help me find flights from Illinois to Trieste?

I’m not ready to book a flight from Illinois to Trieste right now. Can momondo alert me if prices change?

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo