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Cheap flights from Portland to Trieste from $789

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 4/29. 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

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Find the cheapest flights from Portland to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
7:15 am - 2:00 pm
PDX
-
TRS
21h 45m
2 stops
Lufthansa Logo
6:10 am - 7:05 pm
TRS
-
PDX
21h 55m
2 stops
$789Lufthansa
Wed, Apr 29 - Wed, May 13
Multiple Airlines Logo
2:10 pm - 9:55 pm
PDX
-
TRS
22h 45m
2 stops
Multiple Airlines Logo
2:40 pm - 11:50 pm
TRS
-
PDX
18h 10m
2 stops
$803Multiple Airlines
Fri, Apr 24 - Fri, May 1
Lufthansa Logo
7:00 am - 1:55 pm
PDX
-
TRS
21h 55m
2 stops
Lufthansa Logo
6:00 am - 6:45 pm
TRS
-
PDX
21h 45m
2 stops
$841Lufthansa
Fri, Apr 24 - Fri, May 1
Lufthansa Logo
2:10 pm - 9:55 pm
PDX
-
TRS
22h 45m
2 stops
Lufthansa Logo
6:00 am - 6:45 pm
TRS
-
PDX
21h 45m
2 stops
$870Lufthansa
Fri, Apr 24 - Fri, May 1
Icelandair Logo
3:30 pm - 6:30 pm
PDX
-
TRS
18h 00m
2 stops
Icelandair Logo
11:15 am - 5:55 pm
TRS
-
PDX
39h 40m
2 stops
$939Icelandair
Tue, May 12 - Tue, May 26
Lufthansa Logo
7:15 am - 10:15 pm
PDX
-
TRS
30h 00m
2 stops
Lufthansa Logo
6:10 am - 7:05 pm
TRS
-
PDX
21h 55m
2 stops
$949Lufthansa
Tue, May 12 - Tue, May 26
Multiple Airlines Logo
7:15 am - 10:15 pm
PDX
-
TRS
30h 00m
2 stops
Multiple Airlines Logo
2:45 pm - 2:45 pm
TRS
-
PDX
33h 00m
3 stops
$1,018Multiple Airlines
Tue, May 12 - Tue, May 26
Multiple Airlines Logo
9:50 am - 1:55 pm
PDX
-
TRS
19h 05m
2 stops
Multiple Airlines Logo
6:00 am - 9:31 pm
TRS
-
PDX
24h 31m
2 stops
$1,074Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
9:50 am - 1:55 pm
PDX
-
TRS
19h 05m
2 stops
Multiple Airlines Logo
6:35 am - 10:53 pm
TRS
-
PDX
25h 18m
3 stops
$1,128Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
9:50 am - 11:50 pm
PDX
-
TRS
29h 00m
3 stops
Multiple Airlines Logo
3:15 pm - 1:15 pm
TRS
-
PDX
31h 00m
3 stops
$1,241Multiple Airlines
Wed, Apr 29 - Wed, May 13

Lufthansa flights from Portland to Trieste

Our best Lufthansa deals on Portland to Trieste flight tickets
Lufthansa
Apr 29
PDX7:15 amPortland
21h 45m
2 stops
TRS2:00 pmTrieste Ronchi dei Legionari
May 13
TRS6:10 amTrieste Ronchi dei Legionari
21h 55m
2 stops
PDX7:05 pmPortland
$789
Lufthansa
Apr 24
PDX7:00 amPortland
21h 55m
2 stops
TRS1:55 pmTrieste Ronchi dei Legionari
May 1
TRS6:00 amTrieste Ronchi dei Legionari
21h 45m
2 stops
PDX6:45 pmPortland
$841
Lufthansa
Apr 24
PDX2:10 pmPortland
22h 45m
2 stops
TRS9:55 pmTrieste Ronchi dei Legionari
May 1
TRS6:00 amTrieste Ronchi dei Legionari
21h 45m
2 stops
PDX6:45 pmPortland
$870

United Airlines flights from Portland to Trieste

Our best United Airlines deals on Portland to Trieste flight tickets
United Airlines
Feb 19
PDX7:00 amPortland
18h 25m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Feb 23
TRS6:35 amTrieste Ronchi dei Legionari
23h 08m
2 stops
PDX8:43 pmPortland
$2,079
United Airlines
Feb 19
PDX1:18 pmPortland
36h 07m
3 stops
TRS10:25 amTrieste Ronchi dei Legionari
Feb 23
TRS6:35 amTrieste Ronchi dei Legionari
23h 08m
2 stops
PDX8:43 pmPortland
$4,208
United Airlines
Feb 19
PDX1:18 pmPortland
36h 07m
3 stops
TRS10:25 amTrieste Ronchi dei Legionari
Feb 23
TRS6:35 amTrieste Ronchi dei Legionari
23h 08m
2 stops
PDX8:43 pmPortland
$4,209

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 February 6, 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

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 4/29

7:15 am-2:00 pm

2 stops21h 45m

Trieste Ronchi dei Legionari

Wed 5/13

6:10 am-7:05 pm

2 stops21h 55m

$789

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

2:10 pm-9:55 pm

2 stops22h 45m

Trieste Ronchi dei Legionari

Fri 5/1

2:40 pm-11:50 pm

2 stops18h 10m

$803

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

7:00 am-1:55 pm

2 stops21h 55m

Trieste Ronchi dei Legionari

Fri 5/1

6:00 am-6:45 pm

2 stops21h 45m

$841

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

2:10 pm-9:55 pm

2 stops22h 45m

Trieste Ronchi dei Legionari

Fri 5/1

6:00 am-6:45 pm

2 stops21h 45m

$870

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Tue 5/12

3:30 pm-6:30 pm

2 stops18h 00m

Trieste Ronchi dei Legionari

Tue 5/26

11:15 am-5:55 pm

2 stops39h 40m

$939

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Tue 5/12

7:15 am-10:15 pm

2 stops30h 00m

Trieste Ronchi dei Legionari

Tue 5/26

6:10 am-7:05 pm

2 stops21h 55m

$949

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Tue 5/12

7:15 am-10:15 pm

2 stops30h 00m

Trieste Ronchi dei Legionari

Tue 5/26

2:45 pm-2:45 pm

3 stops33h 00m

$1,018

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

9:50 am-1:55 pm

2 stops19h 05m

Trieste Ronchi dei Legionari

Fri 5/1

6:00 am-9:31 pm

2 stops24h 31m

$1,074

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Fri 4/24

9:50 am-1:55 pm

2 stops19h 05m

Trieste Ronchi dei Legionari

Fri 5/1

6:35 am-10:53 pm

3 stops25h 18m

$1,128

PortlandTrieste

PDX - TRS

PDXTRS

Portland

Wed 4/29

9:50 am-11:50 pm

3 stops29h 00m

Trieste Ronchi dei Legionari

Wed 5/13

3:15 pm-1:15 pm

3 stops31h 00m

$1,241

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 Delta 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 43% 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

18h 25m

Direct flights

None
The fastest flight from Portland to Trieste takes 18h 25m
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 18h 25m.

  • 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
Delta
American Airlines
United Airlines
Condor
Air France