Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Trieste from $724

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Trieste departing on 11/19. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize 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.
Search flight deals

Find the cheapest flights from Seattle to Trieste

Cheap round-trip flights

Lufthansa Logo
7:00 am - 10:45 pmSEA-TRS
30h 45m2 stops
Lufthansa Logo
2:45 pm - 10:45 pmTRS-SEA
41h 00m2 stops
$724Lufthansa
Find Deal
Wed, Nov 19 - Sun, Nov 23
Lufthansa Logo
7:00 am - 10:45 pmSEA-TRS
30h 45m2 stops
Lufthansa Logo
2:45 pm - 12:10 pmTRS-SEA
30h 25m1 stop
$726Lufthansa
Find Deal
Wed, Nov 19 - Sun, Nov 23
Lufthansa Logo
7:00 am - 10:45 pmSEA-TRS
30h 45m2 stops
Lufthansa Logo
2:45 pm - 12:10 pmTRS-SEA
30h 25m1 stop
$875Lufthansa
Find Deal
Wed, Nov 19 - Sun, Nov 23
Emirates Logo
5:15 pm - 10:55 pmSEA-TRS
44h 40m2 stops
Emirates Logo
11:15 am - 1:25 pmTRS-SEA
35h 10m2 stops
$3,062Emirates
Find Deal
Tue, Aug 12 - Fri, Aug 15

Lufthansa flights from Seattle to Trieste

Our best Lufthansa deals on Seattle to Trieste flight tickets
Lufthansa
Nov 19
SEA7:00 amSeattle/Tacoma Intl
30h 45m
2 stops
TRS10:45 pmTrieste Ronchi dei Legionari
Nov 23
TRS2:45 pmTrieste Ronchi dei Legionari
41h 00m
2 stops
SEA10:45 pmSeattle/Tacoma Intl
$724
Find similar
Lufthansa
Nov 19
SEA7:00 amSeattle/Tacoma Intl
30h 45m
2 stops
TRS10:45 pmTrieste Ronchi dei Legionari
Nov 23
TRS2:45 pmTrieste Ronchi dei Legionari
30h 25m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$726
Find similar
Lufthansa
Nov 19
SEA7:00 amSeattle/Tacoma Intl
30h 45m
2 stops
TRS10:45 pmTrieste Ronchi dei Legionari
Nov 23
TRS2:45 pmTrieste Ronchi dei Legionari
30h 25m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$875
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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 July 31, 2025.
Use the filters below to find and compare flights from Seattle to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/19

7:00 am-10:45 pm

2 stops30h 45m

Trieste Ronchi dei Legionari

Sun 11/23

2:45 pm-10:45 pm

2 stops41h 00m

$724

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/19

7:00 am-10:45 pm

2 stops30h 45m

Trieste Ronchi dei Legionari

Sun 11/23

2:45 pm-12:10 pm

1 stop30h 25m

$726

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Wed 11/19

7:00 am-10:45 pm

2 stops30h 45m

Trieste Ronchi dei Legionari

Sun 11/23

2:45 pm-12:10 pm

1 stop30h 25m

$875

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

Tue 8/12

5:15 pm-10:55 pm

2 stops44h 40m

Trieste Ronchi dei Legionari

Fri 8/15

11:15 am-1:25 pm

2 stops35h 10m

$3,062

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 Seattle 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 is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Tuesday when prices can be found for as low as $1,169. This is often the case because there is less demand to fly during this day of the week. Flights from Seattle to Trieste on a Wednesday will generally be more expensive and average around $1,307. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

When to book flights from Seattle to Trieste

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

Cheap Seattle to Trieste (SEA to TRS) flight deals and tips

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

Best Price Found

$724

Fastest flight time

30h 45m

Direct flights

None

Airports in Trieste

1 airport
The best flight deal from Seattle to Trieste found on momondo in the last 72 hours is $724
The fastest flight from Seattle to Trieste takes 30h 45m
There are no direct flights from Seattle to Trieste. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Trieste Ronchi dei Legionari Airport.
There is 1 airport near Trieste: Trieste Ronchi dei Legionari (TRS)
Search flight deals

  • How far is Seattle/Tacoma Intl to Trieste Ronchi dei Legionari by plane?

    A flight from Seattle/Tacoma Intl to Trieste Ronchi dei Legionari will travel around 5463.5 mi. 30h 45m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Trieste Ronchi dei Legionari Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Trieste Ronchi dei Legionari Airport were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Trieste Ronchi dei Legionari Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Trieste Ronchi dei Legionari Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma 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 Seattle to Trieste?

Best airlines flying from Seattle to Trieste

Compare and see reviews for airlines that fly from Seattle to Trieste with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $857Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights

Traveling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Grado
Udine

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Trieste?

It is quick and easy to find Seattle to Trieste flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Trieste that suits you.

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

Flights from Seattle to Trieste with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Seattle to Trieste flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12
By creating a price alert you accept our terms of use and privacy policy.

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
American Airlines
Delta
United Airlines
Turkish Airlines
Lufthansa
Frontier
British Airways
Qatar Airways
Spirit Airlines
Ryanair
Emirates
Alaska Airlines