Cheap flights from Belfast to Trieste from £171

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to Trieste departing on 25/10. 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
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Belfast to Trieste

Cheap return flights

 Logo
19:35 - 10:50BFS-TRS
14h 15m1 stop
 Logo
18:10 - 12:00TRS-BFS
18h 50m2 stops
Sat, 25 Oct - Sat, 1 Nov
 Logo
19:35 - 10:50BFS-TRS
14h 15m1 stop
 Logo
17:30 - 08:50TRS-BFS
16h 20m1 stop
Sat, 25 Oct - Sat, 1 Nov
 Logo
05:45 - 19:00BFS-TRS
12h 15m2 stops
 Logo
18:10 - 12:00TRS-BFS
18h 50m2 stops
Sat, 25 Oct - Sat, 1 Nov
 Logo
05:45 - 19:00BFS-TRS
12h 15m2 stops
 Logo
11:15 - 12:00TRS-BFS
25h 45m3 stops
Sat, 25 Oct - Sat, 1 Nov
 Logo
09:15 - 15:30BFS-TRS
29h 15m3 stops
 Logo
11:15 - 12:00TRS-BFS
25h 45m3 stops
Sat, 25 Oct - Sat, 1 Nov

momondo Fare Finder

 
Customise your flight search to find flights from Belfast 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 279,928 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from Belfast to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastTrieste

BFS - TRS

BFSTRS

Belfast Intl

Sat 25/10

19:35-10:50

1 stop14h 15m

Trieste Ronchi dei Legionari

Sat 1/11

18:10-12:00

2 stops18h 50m

£171

BelfastTrieste

BFS - TRS

BFSTRS

Belfast Intl

Sat 25/10

19:35-10:50

1 stop14h 15m

Trieste Ronchi dei Legionari

Sat 1/11

17:30-08:50

1 stop16h 20m

£182

BelfastTrieste

BFS - TRS

BFSTRS

Belfast Intl

Sat 25/10

05:45-19:00

2 stops12h 15m

Trieste Ronchi dei Legionari

Sat 1/11

18:10-12:00

2 stops18h 50m

£199

BelfastTrieste

BFS - TRS

BFSTRS

Belfast Intl

Sat 25/10

05:45-19:00

2 stops12h 15m

Trieste Ronchi dei Legionari

Sat 1/11

11:15-12:00

3 stops25h 45m

£247

BelfastTrieste

BFS - TRS

BFSTRS

Belfast Intl

Sat 25/10

09:15-15:30

3 stops29h 15m

Trieste Ronchi dei Legionari

Sat 1/11

11:15-12:00

3 stops25h 45m

£289

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Belfast to Trieste flight deals and tips

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

Direct flights

None
There are no direct flights from Belfast to Trieste. There are no popular flight routes from Belfast to Trieste.
  • How far is Belfast to Trieste Ronchi dei Legionari by plane?

    The distance between Belfast and Trieste Ronchi dei Legionari is about 1062.8 mi. By plane, this route typically takes 12h 15m.

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

    Prices for flights from Belfast to Trieste Ronchi dei Legionari Airport refresh daily.

  • How old do you have to be to fly from Belfast 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 Belfast to Trieste Ronchi dei Legionari Airport.

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

    The travel and health documents required for your trip to Trieste Ronchi dei Legionari Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Trieste Ronchi dei Legionari Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Belfast to Trieste?

    Search flight deals from Belfast to Trieste. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Belfast to Trieste with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Travelling 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 Belfast to Trieste?

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

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

momondo does allow users to show only those flights to Trieste from Belfast which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Belfast to Trieste flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Belfast 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 Belfast and alert you when they change.

An easier way to manage your Trieste trip

We make it super easy to schedule, organise 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.
1 adult
Sun 12/10
Sun 19/10

Find better results for your trip to Italy

Fly your favourite airline to Trieste

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