In terms of precipitation, rainfall in Trieste ranges from 62.0 - 114.0 inches per month. November is typically the wettest month, when rainfall can reach 114.0 mm. February is typically the driest time to visit Trieste when rainfall is around 62.0 mm.

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 24.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from NIR to TRS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Trieste as you normally would.

What airport do you fly into for flights to Trieste from Northern Ireland?

Trieste Ronchi dei Legionari (TRS) is the airport you will fly into if you book a flight from Northern Ireland to Trieste. It is only a 18.2 mi journey from Ronchi dei Legionari (TRS) to Trieste’s city center.

Can I find deals for flights from Northern Ireland to Trieste that include hotel bookings?

Yes. In addition to deals on Northern Ireland to Trieste flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Northern Ireland to Trieste?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Trieste.

Can I find deals for business class flights from Northern Ireland to Trieste?

Yes. Cheapflights offers flight deals from Northern Ireland 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.

£143+ Cheap Flights from Northern Ireland to Trieste

Cheap flight deals from Northern Ireland to Trieste

Round-trip from	£143

30/10-6/11
2 total stops
24h 45m total
Northern Ireland to Trieste

Search Deals

Find flight deals from Northern Ireland to Trieste

Cheapest flights from Northern Ireland to Trieste
Explore the most affordable flight options available from Northern Ireland to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Thu 30/1006:15BFS - TRS

1 stop14h 00mMultiple Airlines

Thu 6/1121:40TRS - BFS

1 stop10h 45mMultiple Airlines

Deal found 15/9£143

Cheapflights Fare Finder

Use the filters below to find and compare flights from Northern Ireland to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastTrieste

BFS - TRS

BFSTRS

Belfast Intl

Thu 30/10

06:15-21:15

1 stop14h 00m

Trieste Ronchi dei Legionari

Thu 6/11

21:40-07:25

1 stop10h 45m

£143

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Best time to book a flight from Northern Ireland to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Northern Ireland with our price prediction graph.

Estimated return 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 Northern Ireland to Trieste

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Trieste from Northern Ireland?
Trieste Ronchi dei Legionari (TRS) is the airport you will fly into if you book a flight from Northern Ireland to Trieste. It is only a 18.2 mi journey from Ronchi dei Legionari (TRS) to Trieste’s city center.
Can I find deals for flights from Northern Ireland to Trieste that include hotel bookings?
Yes. In addition to deals on Northern Ireland to Trieste flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to Trieste?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Trieste.
Can I find deals for business class flights from Northern Ireland to Trieste?
Yes. Cheapflights offers flight deals from Northern Ireland 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

Udine

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Northern Ireland to Trieste

London City to Vicenza flights

Gatwick to Vicenza flights

Heathrow to Vicenza flights

Luton to Vicenza flights

Stansted to Vicenza flights

Manchester to Vicenza flights

Southend to Vicenza flights

Bristol to Vicenza flights

Edinburgh to Vicenza flights

Heathrow to Trieste flights

Birmingham to Vicenza flights

Newcastle upon Tyne to Vicenza flights

Stansted to Trieste flights

Gatwick to Trieste flights

Glasgow Intl to Vicenza flights

Luton to Trieste flights

London City to Trieste flights

Liverpool to Vicenza flights

Leeds to Vicenza flights

Belfast Intl to Vicenza flights

Belfast City to Vicenza flights

Manchester to Trieste flights

East Midlands to Trieste flights

East Midlands to Vicenza flights

Aberdeen to Vicenza flights

Southampton to Vicenza flights

Norwich to Vicenza flights

Birmingham to Trieste flights

Exeter to Vicenza flights

Cardiff to Vicenza flights

Newcastle upon Tyne to Trieste flights

Darlington to Vicenza flights

Edinburgh to Trieste flights

Glasgow Intl to Trieste flights

Leeds to Trieste flights

Cardiff to Trieste flights

Bristol to Trieste flights

Southend to Trieste flights

Doncaster to Vicenza flights

Belfast City to Trieste flights

Southampton to Trieste flights

Fly with Cheapflights

How does Cheapflights help users find flights from Northern Ireland to Trieste?

Deals for Northern Ireland to Trieste flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Trieste?

Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to Trieste by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Northern Ireland to Trieste with no change fees?

Certainly. Search results for flights to Trieste from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Northern Ireland to Trieste become cheaper?

Yes, Cheapflights offers price alerts on Northern Ireland to Trieste flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.