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Cheap flights from Pittsburgh to Trieste from $1,265

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Pittsburgh to Trieste departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Pittsburgh to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:11 pm - 10:25 amPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
14h 14m2 stops Chicago O'Hare Intl Rome Fiumicino
United Airlines Logo
6:35 am - 2:53 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
38h 18m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl
$1,265United Airlines
Wed, Sep 9 - Wed, Sep 30
United Airlines Logo
8:30 am - 10:25 amPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
19h 55m2 stops Newark Rome Fiumicino
United Airlines Logo
6:35 am - 2:53 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
38h 18m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl
$1,467United Airlines
Wed, Sep 9 - Wed, Sep 30
United Airlines Logo
6:30 am - 10:25 amPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
21h 55m2 stops Newark Rome Fiumicino
United Airlines Logo
6:35 am - 2:53 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
38h 18m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl
$1,488United Airlines
Wed, Sep 23 - Tue, Oct 6
United Airlines Logo
2:11 pm - 10:25 amPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
14h 14m2 stops Chicago O'Hare Intl Rome Fiumicino
United Airlines Logo
6:35 am - 2:53 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
38h 18m2 stops Rome Fiumicino Montreal Pierre Elliott Trudeau Intl
$1,565United Airlines
Wed, Sep 23 - Tue, Oct 6
KLM Logo
4:45 pm - 2:30 pmPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
15h 45m2 stops New York John F Kennedy Intl Rome Fiumicino
KLM Logo
6:35 am - 10:45 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
22h 10m2 stops Rome Fiumicino Detroit Metropolitan Wayne County
$3,521KLM
Wed, Nov 18 - Sat, Nov 28
Lufthansa Logo
3:15 pm - 2:30 pmPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
17h 15m2 stops Washington, D.C. Dulles Intl Rome Fiumicino
Lufthansa Logo
3:15 pm - 8:47 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
35h 32m2 stops Rome Fiumicino Newark
$4,671Lufthansa
Wed, Nov 18 - Sun, Nov 29
Lufthansa Logo
12:57 pm - 2:30 pmPIT  Pittsburgh-TRS Trieste Ronchi dei Legionari
19h 33m2 stops Newark Rome Fiumicino
Lufthansa Logo
6:35 am - 6:36 pmTRS  Trieste Ronchi dei Legionari-PIT Pittsburgh
18h 01m2 stops Rome Fiumicino Toronto Pearson Intl
$4,811Lufthansa
Thu, Nov 19 - Sat, Nov 28

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United Airlines flights from Pittsburgh to Trieste

Our best United Airlines deals on Pittsburgh to Trieste flight tickets
United Airlines
Sep 9
PIT2:11 pmPittsburgh
14h 14m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Sep 30
TRS6:35 amTrieste Ronchi dei Legionari
38h 18m
2 stops
PIT2:53 pmPittsburgh
$1,265
United Airlines
Sep 9
PIT8:30 amPittsburgh
19h 55m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Sep 30
TRS6:35 amTrieste Ronchi dei Legionari
38h 18m
2 stops
PIT2:53 pmPittsburgh
$1,467
United Airlines
Sep 23
PIT6:30 amPittsburgh
21h 55m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Oct 6
TRS6:35 amTrieste Ronchi dei Legionari
38h 18m
2 stops
PIT2:53 pmPittsburgh
$1,488

Lufthansa flights from Pittsburgh to Trieste

Our best Lufthansa deals on Pittsburgh to Trieste flight tickets
Lufthansa
Nov 18
PIT3:15 pmPittsburgh
17h 15m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
Nov 29
TRS3:15 pmTrieste Ronchi dei Legionari
35h 32m
2 stops
PIT8:47 pmPittsburgh
$4,671
Lufthansa
Nov 19
PIT12:57 pmPittsburgh
19h 33m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
Nov 28
TRS6:35 amTrieste Ronchi dei Legionari
18h 01m
2 stops
PIT6:36 pmPittsburgh
$4,811

momondo Fare Finder

 
Customize your flight search to find flights from Pittsburgh 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, momondo users made 832,500 searches. Data last updated August 5, 2026.
Use the filters below to find and compare flights from Pittsburgh to Trieste that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Wed 9/9

2:11 pm-10:25 am

2 stops14h 14m

Trieste Ronchi dei Legionari

Wed 9/30

6:35 am-2:53 pm

2 stops38h 18m

$1,265

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Wed 9/9

8:30 am-10:25 am

2 stops19h 55m

Trieste Ronchi dei Legionari

Wed 9/30

6:35 am-2:53 pm

2 stops38h 18m

$1,467

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Wed 9/23

6:30 am-10:25 am

2 stops21h 55m

Trieste Ronchi dei Legionari

Tue 10/6

6:35 am-2:53 pm

2 stops38h 18m

$1,488

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Wed 9/23

2:11 pm-10:25 am

2 stops14h 14m

Trieste Ronchi dei Legionari

Tue 10/6

6:35 am-2:53 pm

2 stops38h 18m

$1,565

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Wed 11/18

4:45 pm-2:30 pm

2 stops15h 45m

Trieste Ronchi dei Legionari

Sat 11/28

6:35 am-10:45 pm

2 stops22h 10m

$3,521

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Wed 11/18

3:15 pm-2:30 pm

2 stops17h 15m

Trieste Ronchi dei Legionari

Sun 11/29

3:15 pm-8:47 pm

2 stops35h 32m

$4,671
Quickest round-trip

PittsburghTrieste

PIT Pittsburgh - TRS Trieste Ronchi dei Legionari

PITTRS

Pittsburgh

Thu 11/19

12:57 pm-2:30 pm

2 stops19h 33m

Trieste Ronchi dei Legionari

Sat 11/28

6:35 am-6:36 pm

2 stops18h 01m

$4,811

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Trieste from

How to get the cheapest flight ticket from Pittsburgh 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 airlines fly to Trieste?

British Airways, United Airlines and Delta are the top three most popular airlines that fly to Trieste from Pittsburgh according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 4 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

When to book flights from Pittsburgh to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Pittsburgh to Trieste according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Pittsburgh to Trieste (PIT to TRS) flight deals and tips

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

Fastest flight time

19h 35m

Direct flights

None
The fastest flight from Pittsburgh to Trieste takes 19h 35m
There are no direct flights from Pittsburgh to Trieste. There are no popular flight routes from Pittsburgh to Trieste.
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Frequently asked questions about flying from Pittsburgh to Trieste

  • How far is Pittsburgh to Trieste Ronchi dei Legionari by plane?

    Pittsburgh and Trieste Ronchi dei Legionari are 4460.5 mi apart from one another. Flights usually cover this in 19h 35m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Pittsburgh Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Pittsburgh Airport 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 Pittsburgh Airport 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.

Traveling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Udine
Grado

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Pittsburgh to Trieste. momondo saves you time and could save you money on your trip.

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

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

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

momondo helps you find the best flight between Pittsburgh and Trieste by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Trieste, momondo offers a useful price alert feature which will track prices for flights to Trieste from Pittsburgh and alert you when they change.

An easier way to manage your Trieste trip

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Fri 9/4
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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
British Airways
United Airlines
Delta
KLM