How does KAYAK find such low prices on flights from Illinois to Trieste?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Trieste.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Trieste?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Trieste from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Trieste?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Trieste with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Trieste?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Trieste from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$352 CHEAP FLIGHTS from Illinois to Trieste

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Flight Deals

Cheap Flights from Illinois to Trieste

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Illinois to Trieste

Sun, Mar 7 - Thu, Mar 11

8:10 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 20m2 stops Lisbon Humberto Delgado Rome Fiumicino

11:15 am - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

35h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$884TAP AIR PORTUGAL

Sun, Mar 7 - Thu, Mar 11

8:10 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 20m2 stops Lisbon Humberto Delgado Rome Fiumicino

11:15 am - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

35h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$885TAP AIR PORTUGAL

Sun, Mar 7 - Thu, Mar 11

8:10 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 20m2 stops Lisbon Humberto Delgado Rome Fiumicino

11:15 am - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

35h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$915TAP AIR PORTUGAL

Wed, Jan 13 - Sun, Jan 24

3:01 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

20h 29m2 stops Atlanta Hartsfield-Jackson Rome Fiumicino

3:15 pm - 6:42 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

34h 27m2 stops Rome Fiumicino Boston Logan Intl

$945KLM

Thu, Nov 26 - Wed, Dec 2

4:10 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

19h 20m2 stops Zurich Rome Fiumicino

3:15 pm - 12:40 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

28h 25m2 stops Rome Fiumicino Zurich

$1,000SWISS

Thu, Nov 26 - Wed, Dec 2

6:00 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

17h 30m2 stops Munich Franz Josef Strauss Rome Fiumicino

7:15 pm - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

24h 55m1 stop Rome Fiumicino

$1,077Multiple Airlines

Thu, Nov 26 - Wed, Dec 2

3:40 pm - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 50m1 stop Rome Fiumicino

7:15 pm - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

24h 55m1 stop Rome Fiumicino

$1,080Multiple Airlines

Sun, Mar 7 - Thu, Mar 11

3:40 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

11h 45m1 stop Rome Fiumicino

6:35 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Rome Fiumicino

$1,117United Airlines

Sun, Mar 7 - Thu, Mar 11

10:40 am - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 45m2 stops Newark Rome Fiumicino

6:35 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Rome Fiumicino

$1,121United Airlines

Thu, Nov 26 - Wed, Dec 2

6:30 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

21h 25m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Rome Fiumicino

7:15 pm - 5:20 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

29h 05m3 stops Rome Fiumicino Brussels Bruxelles-National Reykjavik Keflavik Intl

$1,239Multiple Airlines

Useful Info

Cheapest flight	$352

Flight from Chicago to Trieste

How does KAYAK find such low prices on flights from Illinois to Trieste?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Trieste.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Trieste?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Trieste from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Trieste?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Trieste with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Trieste?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Trieste from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.