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Cheap flights from Portland to Trieste from $967

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Trieste departing on 4/24. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
11:05 am - 1:55 pm
PDX
-
TRS
17h 50m
2 stops
Lufthansa Logo
2:40 pm - 11:59 pm
TRS
-
PDX
18h 19m
2 stops
$967Lufthansa
Fri, Apr 24 - Fri, May 1
United Airlines Logo
11:15 pm - 10:25 am
PDX
-
TRS
26h 10m
2 stops
United Airlines Logo
6:35 am - 11:00 pm
TRS
-
PDX
25h 25m
2 stops
$1,052United Airlines
Sun, Aug 16 - Thu, Aug 20
Lufthansa Logo
7:15 am - 1:55 pm
PDX
-
TRS
21h 40m
2 stops
Lufthansa Logo
2:40 pm - 11:59 pm
TRS
-
PDX
18h 19m
2 stops
$1,059Lufthansa
Fri, Apr 24 - Fri, May 1
Lufthansa Logo
2:30 pm - 9:55 pm
PDX
-
TRS
22h 25m
2 stops
Lufthansa Logo
6:10 am - 6:45 pm
TRS
-
PDX
21h 35m
2 stops
$1,104Lufthansa
Fri, Apr 24 - Fri, May 1
Lufthansa Logo
11:05 am - 9:55 pm
PDX
-
TRS
25h 50m
2 stops
Lufthansa Logo
6:10 am - 6:45 pm
TRS
-
PDX
21h 35m
2 stops
$1,109Lufthansa
Fri, Apr 24 - Fri, May 1
United Airlines Logo
1:14 pm - 10:25 am
PDX
-
TRS
36h 11m
2 stops
United Airlines Logo
6:35 am - 12:47 am
TRS
-
PDX
27h 12m
3 stops
$1,131United Airlines
Sun, Aug 16 - Thu, Aug 20
United Airlines Logo
7:14 pm - 10:25 am
PDX
-
TRS
54h 11m
2 stops
United Airlines Logo
6:35 am - 1:15 pm
TRS
-
PDX
39h 40m
3 stops
$1,832United Airlines
Fri, Apr 24 - Fri, May 1

Lufthansa flights from Portland to Trieste

Our best Lufthansa deals on Portland to Trieste flight tickets
Lufthansa
Apr 24
PDX11:05 amPortland
17h 50m
2 stops
TRS1:55 pmTrieste Ronchi dei Legionari
May 1
TRS2:40 pmTrieste Ronchi dei Legionari
18h 19m
2 stops
PDX11:59 pmPortland
$967
Lufthansa
Apr 24
PDX7:15 amPortland
21h 40m
2 stops
TRS1:55 pmTrieste Ronchi dei Legionari
May 1
TRS2:40 pmTrieste Ronchi dei Legionari
18h 19m
2 stops
PDX11:59 pmPortland
$1,059
Lufthansa
Apr 24
PDX2:30 pmPortland
22h 25m
2 stops
TRS9:55 pmTrieste Ronchi dei Legionari
May 1
TRS6:10 amTrieste Ronchi dei Legionari
21h 35m
2 stops
PDX6:45 pmPortland
$1,104

United Airlines flights from Portland to Trieste

Our best United Airlines deals on Portland to Trieste flight tickets
United Airlines
Aug 16
PDX11:15 pmPortland
26h 10m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Aug 20
TRS6:35 amTrieste Ronchi dei Legionari
25h 25m
2 stops
PDX11:00 pmPortland
$1,052
United Airlines
Aug 16
PDX1:14 pmPortland
36h 11m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Aug 20
TRS6:35 amTrieste Ronchi dei Legionari
27h 12m
3 stops
PDX12:47 amPortland
$1,131
United Airlines
Apr 24
PDX7:14 pmPortland
54h 11m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
May 1
TRS6:35 amTrieste Ronchi dei Legionari
39h 40m
3 stops
PDX1:15 pmPortland
$1,832

momondo Fare Finder

 
Customize your flight search to find flights from Portland 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 March 28, 2026.
Use the filters below to find and compare flights from Portland to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

11:05 am-1:55 pm

2 stops17h 50m

Trieste Ronchi dei Legionari

Fri 5/1

2:40 pm-11:59 pm

2 stops18h 19m

$967

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Sun 8/16

11:15 pm-10:25 am

2 stops26h 10m

Trieste Ronchi dei Legionari

Thu 8/20

6:35 am-11:00 pm

2 stops25h 25m

$1,052

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

7:15 am-1:55 pm

2 stops21h 40m

Trieste Ronchi dei Legionari

Fri 5/1

2:40 pm-11:59 pm

2 stops18h 19m

$1,059

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

2:30 pm-9:55 pm

2 stops22h 25m

Trieste Ronchi dei Legionari

Fri 5/1

6:10 am-6:45 pm

2 stops21h 35m

$1,104

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

11:05 am-9:55 pm

2 stops25h 50m

Trieste Ronchi dei Legionari

Fri 5/1

6:10 am-6:45 pm

2 stops21h 35m

$1,109

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Sun 8/16

1:14 pm-10:25 am

2 stops36h 11m

Trieste Ronchi dei Legionari

Thu 8/20

6:35 am-12:47 am

3 stops27h 12m

$1,131

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

7:14 pm-10:25 am

2 stops54h 11m

Trieste Ronchi dei Legionari

Fri 5/1

6:35 am-1:15 pm

3 stops39h 40m

$1,832

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 Portland 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, KLM and Condor are the top three most popular airlines that fly to Trieste from Portland according to our data. British Airways is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 7 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 Portland to Trieste

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

Cheap Portland to Trieste (PDX to TRS) flight deals and tips

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

Fastest flight time

21h 40m

Direct flights

None
The fastest flight from Portland to Trieste takes 21h 40m
There are no direct flights from Portland to Trieste. There are no popular flight routes from Portland to Trieste.
Search flight deals

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

    The straight-line distance from Portland to Trieste Ronchi dei Legionari is 5597.1 mi. A reasonable flight in good conditions will take 21h 40m.

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

    Prices for flights from Portland Airport to Trieste Ronchi dei Legionari Airport were last updated today.

  • How old do you have to be to fly from Portland Airport to Trieste Ronchi dei Legionari Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport 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.

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 Portland to Trieste?

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

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

All flight searches from Portland to Trieste on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Portland 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 Portland to Trieste right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to Trieste flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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
KLM
Condor
Delta
United Airlines
American Airlines
Air France