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Cheap flights from Seattle to Trieste from $706

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.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
10:05 am - 2:05 pmSEA-TRS
19h 00m2 stops
Lufthansa Logo
3:00 pm - 12:10 pmTRS-SEA
30h 10m1 stop
$706Lufthansa
Find Deal
mié., nov. 19 - dom., nov. 23
Lufthansa Logo
12:35 pm - 10:40 pmSEA-TRS
25h 05m2 stops
Lufthansa Logo
3:00 pm - 12:10 pmTRS-SEA
30h 10m1 stop
$711Lufthansa
Find Deal
mié., nov. 19 - dom., nov. 23
Lufthansa Logo
12:35 pm - 10:40 pmSEA-TRS
25h 05m2 stops
Lufthansa Logo
3:00 pm - 6:52 pmTRS-SEA
36h 52m2 stops
$721Lufthansa
Find Deal
mié., nov. 19 - dom., nov. 23
KLM Logo
7:20 am - 6:30 pmSEA-TRS
26h 10m2 stops
KLM Logo
6:35 am - 10:25 pmTRS-SEA
24h 50m2 stops
$764KLM
Find Deal
mié., nov. 19 - dom., nov. 23
KLM Logo
7:20 am - 10:55 pmSEA-TRS
30h 35m2 stops
KLM Logo
6:35 am - 10:25 pmTRS-SEA
24h 50m2 stops
$776KLM
Find Deal
mié., nov. 19 - dom., nov. 23
Multiple Airlines Logo
9:25 am - 10:25 pmSEA-TRS
28h 00m2 stops
Multiple Airlines Logo
3:00 pm - 1:20 pmTRS-SEA
55h 20m2 stops
$1,001Multiple Airlines
Find Deal
dom., nov. 9 - vie., nov. 14
Multiple Airlines Logo
3:10 pm - 10:55 pmSEA-TRS
22h 45m3 stops
Multiple Airlines Logo
1:05 pm - 3:40 pmTRS-SEA
35h 35m3 stops
$1,347Multiple Airlines
Find Deal
dom., nov. 9 - vie., nov. 14
Multiple Airlines Logo
8:00 pm - 2:00 pmSEA-TRS
33h 00m2 stops
Multiple Airlines Logo
11:15 am - 12:10 pmTRS-SEA
33h 55m3 stops
$1,364Multiple Airlines
Find Deal
dom., nov. 9 - vie., nov. 14
Lufthansa Logo
2:00 pm - 2:00 pmSEA-TRS
15h 00m1 stop
Lufthansa Logo
2:40 pm - 10:47 pmTRS-SEA
41h 07m2 stops
$1,522Lufthansa
Find Deal
mar., dic. 23 - mié., dic. 31
Lufthansa Logo
2:00 pm - 2:00 pmSEA-TRS
15h 00m1 stop
Lufthansa Logo
2:40 pm - 10:47 pmTRS-SEA
41h 07m2 stops
$1,523Lufthansa
Find Deal
mar., dic. 23 - mié., dic. 31

Lufthansa flights from Seattle to Trieste

Our best Lufthansa deals on Seattle to Trieste flight tickets
Lufthansa
Nov 19
SEA10:05 amSeattle/Tacoma Intl
19h 00m
2 stops
TRS2:05 pmTrieste Ronchi dei Legionari
Nov 23
TRS3:00 pmTrieste Ronchi dei Legionari
30h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$706
Find similar
Lufthansa
Nov 19
SEA12:35 pmSeattle/Tacoma Intl
25h 05m
2 stops
TRS10:40 pmTrieste Ronchi dei Legionari
Nov 23
TRS3:00 pmTrieste Ronchi dei Legionari
30h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$711
Find similar
Lufthansa
Nov 19
SEA12:35 pmSeattle/Tacoma Intl
25h 05m
2 stops
TRS10:40 pmTrieste Ronchi dei Legionari
Nov 23
TRS3:00 pmTrieste Ronchi dei Legionari
36h 52m
2 stops
SEA6:52 pmSeattle/Tacoma Intl
$721
Find similar

KLM flights from Seattle to Trieste

Our best KLM deals on Seattle to Trieste flight tickets
KLM
Nov 19
SEA7:20 amSeattle/Tacoma Intl
26h 10m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Nov 23
TRS6:35 amTrieste Ronchi dei Legionari
24h 50m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$764
Find similar
KLM
Nov 19
SEA7:20 amSeattle/Tacoma Intl
30h 35m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
Nov 23
TRS6:35 amTrieste Ronchi dei Legionari
24h 50m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$776
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 octubre 30, 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

mié. 11/19

10:05 am-2:05 pm

2 stops19h 00m

Trieste Ronchi dei Legionari

dom. 11/23

3:00 pm-12:10 pm

1 stop30h 10m

$706

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

mié. 11/19

12:35 pm-10:40 pm

2 stops25h 05m

Trieste Ronchi dei Legionari

dom. 11/23

3:00 pm-12:10 pm

1 stop30h 10m

$711

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

mié. 11/19

12:35 pm-10:40 pm

2 stops25h 05m

Trieste Ronchi dei Legionari

dom. 11/23

3:00 pm-6:52 pm

2 stops36h 52m

$721

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

mié. 11/19

7:20 am-6:30 pm

2 stops26h 10m

Trieste Ronchi dei Legionari

dom. 11/23

6:35 am-10:25 pm

2 stops24h 50m

$764

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

mié. 11/19

7:20 am-10:55 pm

2 stops30h 35m

Trieste Ronchi dei Legionari

dom. 11/23

6:35 am-10:25 pm

2 stops24h 50m

$776

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

dom. 11/9

9:25 am-10:25 pm

2 stops28h 00m

Trieste Ronchi dei Legionari

vie. 11/14

3:00 pm-1:20 pm

2 stops55h 20m

$1,001

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

dom. 11/9

3:10 pm-10:55 pm

3 stops22h 45m

Trieste Ronchi dei Legionari

vie. 11/14

1:05 pm-3:40 pm

3 stops35h 35m

$1,347

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

dom. 11/9

8:00 pm-2:00 pm

2 stops33h 00m

Trieste Ronchi dei Legionari

vie. 11/14

11:15 am-12:10 pm

3 stops33h 55m

$1,364

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

mar. 12/23

2:00 pm-2:00 pm

1 stop15h 00m

Trieste Ronchi dei Legionari

mié. 12/31

2:40 pm-10:47 pm

2 stops41h 07m

$1,522

SeattleTrieste

SEA - TRS

SEATRS

Seattle/Tacoma Intl

mar. 12/23

2:00 pm-2:00 pm

1 stop15h 00m

Trieste Ronchi dei Legionari

mié. 12/31

2:40 pm-10:47 pm

2 stops41h 07m

$1,523

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

Direct flights

None
There are no direct flights from Seattle to Trieste. There are no popular flight routes from Seattle to Trieste.
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  • 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. 15h 00m 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 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.

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 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

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sáb. 11/29
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