Which layover airport offers the lowest fares from Boston to Trieste?

Flights via Rome (FCO) offer the lowest average round-trip price of $635.

Which layover airport has the shortest travel time from Boston to Trieste?

Flights connecting via Zurich (ZRH) have the shortest average one-way travel time: 10h 08m.

What airlines fly to Trieste?

SWISS, Lufthansa and Condor are the top three most popular airlines that fly to Trieste from Boston according to our data. SWISS is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 16 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Boston Logan Intl to Trieste Ronchi dei Legionari?

ITA Airways, KLM, and Lufthansa are the most popular carriers operating from Boston Logan Intl to Trieste Ronchi dei Legionari

Which airport is the most popular layover for flights between Boston and Trieste?

Zurich (ZRH) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Boston to Trieste?

Zurich (ZRH) has the shortest average layover time for this route: 1h 48m.

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

Prices for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport are updated daily.

How many operators does momondo search for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport?

The number of operators available for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport is 2 as of August 2026.

How old do you have to be to fly from Boston Logan Intl 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 Boston Logan Intl 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.

$513 Cheap Flights from Boston to Trieste in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Trieste

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 pm - 6:30 pm-

18h 30m

3:15 pm - 2:40 pm-

29h 25m

$826Multiple Airlines

Sun, Dec 6 - Thu, Dec 10

6:00 pm - 6:30 pm-

18h 30m

7:15 pm - 7:55 pm-

30h 40m

$827Multiple Airlines

Sun, Dec 6 - Thu, Dec 10

6:00 pm - 6:30 pm-

18h 30m

3:15 pm - 2:40 pm-

29h 25m

$828Multiple Airlines

Sun, Dec 6 - Thu, Dec 10

5:20 pm - 10:25 am-

11h 05m

11:15 am - 1:45 pm-

32h 30m

$844ITA Airways

Sun, Dec 6 - Thu, Dec 10

5:20 pm - 10:25 am-

11h 05m

11:15 am - 1:45 pm-

32h 30m

$845ITA Airways

Sun, Dec 6 - Thu, Dec 10

10:10 pm - 6:30 pm-

14h 20m

3:15 pm - 7:55 pm-

34h 40m

$862TAP AIR PORTUGAL

Sun, Dec 6 - Thu, Dec 10

5:05 pm - 2:30 pm-

15h 25m

3:15 pm - 1:40 pm-

28h 25m

$900ITA Airways

Sun, Oct 4 - Sun, Oct 18

8:05 pm - 10:25 pm-

20h 20m

6:20 am - 8:10 pm-

19h 50m

$1,000Lufthansa

Wed, Sep 2 - Tue, Sep 8

10:00 pm - 1:55 pm-

9h 55m

6:10 am - 8:10 pm-

20h 00m

$1,016Lufthansa

Mon, Sep 7 - Wed, Sep 9

10:00 pm - 2:00 pm-

10h 00m

2:40 pm - 8:10 pm-

11h 30m

$1,016Lufthansa

Wed, Sep 2 - Fri, Sep 4

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ITA Airways flights from Boston to Trieste

Our best ITA Airways deals on Boston to Trieste flight tickets

ITA Airways

Aug 9

BOS5:05 pmBoston Logan Intl

19h 25m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Aug 25

TRS11:15 amTrieste Ronchi dei Legionari

32h 25m

1 stop

BOS1:40 pmBoston Logan Intl

$743

ITA Airways

Dec 6

BOS5:20 pmBoston Logan Intl

11h 05m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Dec 10

TRS11:15 amTrieste Ronchi dei Legionari

32h 30m

1 stop

BOS1:45 pmBoston Logan Intl

$844

ITA Airways

Dec 6

BOS5:20 pmBoston Logan Intl

11h 05m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Dec 10

TRS11:15 amTrieste Ronchi dei Legionari

32h 30m

1 stop

BOS1:45 pmBoston Logan Intl

$845

KLM flights from Boston to Trieste

Our best KLM deals on Boston to Trieste flight tickets

KLM

Dec 6

BOS1:00 pmBoston Logan Intl

19h 30m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

Dec 10

TRS6:35 amTrieste Ronchi dei Legionari

14h 00m

1 stop

BOS2:35 pmBoston Logan Intl

$891

KLM

Aug 8

BOS4:50 pmBoston Logan Intl

24h 05m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

Aug 21

TRS6:35 amTrieste Ronchi dei Legionari

16h 13m

1 stop

BOS4:48 pmBoston Logan Intl

$936

KLM

Aug 8

BOS4:50 pmBoston Logan Intl

24h 05m

1 stop

TRS10:55 pmTrieste Ronchi dei Legionari

Aug 21

TRS6:35 amTrieste Ronchi dei Legionari

16h 13m

1 stop

BOS4:48 pmBoston Logan Intl

$937

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 12/6

6:00 pm-6:30 pm

2 stops18h 30m

Trieste Ronchi dei Legionari

Thu 12/10

3:15 pm-2:40 pm

2 stops29h 25m

$826

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 12/6

6:00 pm-6:30 pm

2 stops18h 30m

Trieste Ronchi dei Legionari

Thu 12/10

7:15 pm-7:55 pm

2 stops30h 40m

$827

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 12/6

6:00 pm-6:30 pm

2 stops18h 30m

Trieste Ronchi dei Legionari

Thu 12/10

3:15 pm-2:40 pm

2 stops29h 25m

$828

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 12/6

5:20 pm-10:25 am

1 stop11h 05m

Trieste Ronchi dei Legionari

Thu 12/10

11:15 am-1:45 pm

1 stop32h 30m

$844

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 12/6

5:20 pm-10:25 am

1 stop11h 05m

Trieste Ronchi dei Legionari

Thu 12/10

11:15 am-1:45 pm

1 stop32h 30m

$845

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 12/6

10:10 pm-6:30 pm

2 stops14h 20m

Trieste Ronchi dei Legionari

Thu 12/10

3:15 pm-7:55 pm

2 stops34h 40m

$862

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Sun 10/4

5:05 pm-2:30 pm

1 stop15h 25m

Trieste Ronchi dei Legionari

Sun 10/18

3:15 pm-1:40 pm

1 stop28h 25m

$900

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Wed 9/2

8:05 pm-10:25 pm

2 stops20h 20m

Trieste Ronchi dei Legionari

Tue 9/8

6:20 am-8:10 pm

1 stop19h 50m

$1,000

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Mon 9/7

10:00 pm-1:55 pm

1 stop9h 55m

Trieste Ronchi dei Legionari

Wed 9/9

6:10 am-8:10 pm

1 stop20h 00m

$1,016

Quickest round-trip

BostonTrieste

BOS - TRS

BOSTRS

Boston Logan Intl

Wed 9/2

10:00 pm-2:00 pm

1 stop10h 00m

Trieste Ronchi dei Legionari

Fri 9/4

2:40 pm-8:10 pm

1 stop11h 30m

$1,016

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Boston 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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Boston and Trieste?

Prices are currently typical for flights on this route.

Typical prices usually range from $554 to $869.
The lowest price recently found on this route was $825.

What is the cheapest month to fly to Trieste?

The cheapest month to fly to Trieste from Boston is in May. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you don’t want to visit Trieste in May, then you should wait until January to fly from Boston, when ticket prices are also cheap, with an average price of $0.

When to book flights from Boston to Trieste

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

Estimated round-trip price

Cheap Boston to Trieste (BOS to TRS) flight deals and tips

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

Fastest flight time	11h 20m
Direct flights	None

The fastest flight from Boston to Trieste takes 11h 20m

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

Search flight deals

Frequently asked questions about flying from Boston to Trieste

How far is Boston Logan Intl to Trieste Ronchi dei Legionari by plane?
There are 4011.9 mi between Boston Logan Intl and Trieste Ronchi dei Legionari. Flights usually cover this in 11h 20m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport?
Prices for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport are updated daily.
How many operators does momondo search for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport?
The number of operators available for flights from Boston Logan Intl Airport to Trieste Ronchi dei Legionari Airport is 2 as of August 2026.
How old do you have to be to fly from Boston Logan Intl 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 Boston Logan Intl 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.
What is the most popular airline from Boston to Trieste?
Based on momondo bookings for flights between Boston and Trieste, the leading airline is Lufthansa, making up 61% of the total bookings. Other popular airlines include ITA Airways with 39%.

Best airlines flying from Boston to Trieste

Compare and see reviews for airlines that fly from Boston to Trieste with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $517	Free Cancellation	Rating 6.8 8,176 reviews		Search Lufthansa flights
ITA Airways	PriceFrom $606	Free Cancellation	Rating 6.7 1,308 reviews		Search ITA Airways flights

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Why use momondo?

Why should I use momondo to find a flight deal from Boston 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 Boston to Trieste for you.

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

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

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

momondo provides multiple filters to help you find the best flight to Trieste from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Trieste from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.