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

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

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

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$563 Cheap Flights from Trieste to Seattle in 2026

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Find the cheapest flights from Trieste to Seattle

Round-trip

One-way

Cheap round-trip flights

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6:10 am - 3:40 pm

TRS

SEA

18h 30m

1 stop

5:40 pm - 10:25 pm

SEA

TRS

19h 45m

1 stop

$940Multiple Airlines

Sun, Apr 19 - Wed, Apr 22

11:15 am - 10:53 pm

TRS

SEA

20h 38m

3 stops

3:40 pm - 10:25 pm

SEA

TRS

21h 45m

3 stops

$1,046Multiple Airlines

Sun, Apr 19 - Wed, Apr 22

11:15 am - 10:53 pm

TRS

SEA

20h 38m

3 stops

2:10 pm - 6:30 pm

SEA

TRS

19h 20m

2 stops

$1,191Multiple Airlines

Sun, Apr 19 - Wed, Apr 22

6:35 am - 11:48 am

TRS

SEA

38h 13m

2 stops

7:05 pm - 10:25 am

SEA

TRS

54h 20m

2 stops

$1,202United Airlines

Wed, Apr 15 - Sun, Apr 19

6:10 am - 7:20 pm

TRS

SEA

22h 10m

2 stops

10:20 am - 2:00 pm

SEA

TRS

18h 40m

2 stops

$1,207Lufthansa

Sun, Apr 19 - Wed, Apr 22

6:35 am - 6:00 pm

TRS

SEA

44h 25m

2 stops

7:37 pm - 10:25 am

SEA

TRS

53h 48m

2 stops

$1,209United Airlines

Wed, Apr 15 - Sun, Apr 19

6:40 am - 4:10 pm

TRS

SEA

18h 30m

2 stops

9:45 pm - 11:45 pm

SEA

TRS

17h 00m

1 stop

$1,216Multiple Airlines

Mon, Apr 6 - Fri, Apr 10

6:35 am - 10:42 pm

TRS

SEA

25h 07m

2 stops

6:50 pm - 9:55 pm

SEA

TRS

18h 05m

2 stops

$1,290Lufthansa

Mon, Apr 6 - Fri, Apr 10

2:50 pm - 12:20 pm

TRS

SEA

30h 30m

1 stop

2:10 pm - 1:55 pm

SEA

TRS

14h 45m

1 stop

$1,377Lufthansa

Mon, Apr 6 - Fri, Apr 10

6:35 am - 9:06 pm

TRS

SEA

23h 31m

2 stops

11:26 am - 10:25 am

SEA

TRS

37h 59m

3 stops

$1,431United Airlines

Wed, Apr 15 - Sun, Apr 19

United Airlines flights from Trieste to Seattle

Our best United Airlines deals on Trieste to Seattle flight tickets

United Airlines

Apr 15

TRS6:35 amTrieste Ronchi dei Legionari

38h 13m

2 stops

SEA11:48 amSeattle/Tacoma Intl

Apr 19

SEA7:05 pmSeattle/Tacoma Intl

54h 20m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,202

United Airlines

Apr 15

TRS6:35 amTrieste Ronchi dei Legionari

44h 25m

2 stops

SEA6:00 pmSeattle/Tacoma Intl

Apr 19

SEA7:37 pmSeattle/Tacoma Intl

53h 48m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,209

United Airlines

Apr 15

TRS6:35 amTrieste Ronchi dei Legionari

23h 31m

2 stops

SEA9:06 pmSeattle/Tacoma Intl

Apr 19

SEA11:26 amSeattle/Tacoma Intl

37h 59m

3 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,431

Lufthansa flights from Trieste to Seattle

Our best Lufthansa deals on Trieste to Seattle flight tickets

Lufthansa

Apr 19

TRS6:10 amTrieste Ronchi dei Legionari

22h 10m

2 stops

SEA7:20 pmSeattle/Tacoma Intl

Apr 22

SEA10:20 amSeattle/Tacoma Intl

18h 40m

2 stops

TRS2:00 pmTrieste Ronchi dei Legionari

$1,207

Lufthansa

Apr 6

TRS6:35 amTrieste Ronchi dei Legionari

25h 07m

2 stops

SEA10:42 pmSeattle/Tacoma Intl

Apr 10

SEA6:50 pmSeattle/Tacoma Intl

18h 05m

2 stops

TRS9:55 pmTrieste Ronchi dei Legionari

$1,290

Lufthansa

Apr 6

TRS2:50 pmTrieste Ronchi dei Legionari

30h 30m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

Apr 10

SEA2:10 pmSeattle/Tacoma Intl

14h 45m

1 stop

TRS1:55 pmTrieste Ronchi dei Legionari

$1,377

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 4/19

6:10 am-3:40 pm

1 stop18h 30m

Seattle/Tacoma Intl

Wed 4/22

5:40 pm-10:25 pm

1 stop19h 45m

$940

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 4/19

11:15 am-10:53 pm

3 stops20h 38m

Seattle/Tacoma Intl

Wed 4/22

3:40 pm-10:25 pm

3 stops21h 45m

$1,046

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 4/19

11:15 am-10:53 pm

3 stops20h 38m

Seattle/Tacoma Intl

Wed 4/22

2:10 pm-6:30 pm

2 stops19h 20m

$1,191

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/15

6:35 am-11:48 am

2 stops38h 13m

Seattle/Tacoma Intl

Sun 4/19

7:05 pm-10:25 am

2 stops54h 20m

$1,202

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 4/19

6:10 am-7:20 pm

2 stops22h 10m

Seattle/Tacoma Intl

Wed 4/22

10:20 am-2:00 pm

2 stops18h 40m

$1,207

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/15

6:35 am-6:00 pm

2 stops44h 25m

Seattle/Tacoma Intl

Sun 4/19

7:37 pm-10:25 am

2 stops53h 48m

$1,209

Quickest round-trip

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Mon 4/6

6:40 am-4:10 pm

2 stops18h 30m

Seattle/Tacoma Intl

Fri 4/10

9:45 pm-11:45 pm

1 stop17h 00m

$1,216

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Mon 4/6

6:35 am-10:42 pm

2 stops25h 07m

Seattle/Tacoma Intl

Fri 4/10

6:50 pm-9:55 pm

2 stops18h 05m

$1,290

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Mon 4/6

2:50 pm-12:20 pm

1 stop30h 30m

Seattle/Tacoma Intl

Fri 4/10

2:10 pm-1:55 pm

1 stop14h 45m

$1,377

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/15

6:35 am-9:06 pm

2 stops23h 31m

Seattle/Tacoma Intl

Sun 4/19

11:26 am-10:25 am

3 stops37h 59m

$1,431

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Trieste to Seattle

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 airline that flies from Trieste Ronchi dei Legionari to Seattle/Tacoma Intl?

Icelandair is the most popular carrier operating from Trieste Ronchi dei Legionari to Seattle/Tacoma Intl

What airlines fly to Seattle?

British Airways, United Airlines and Delta are the top three most popular airlines that fly to Seattle from Trieste according to our data. British Airways is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When to book flights from Trieste to Seattle

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

Estimated round-trip price

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

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

Fastest flight time	21h 00m
Direct flights	None

The fastest flight from Trieste to Seattle takes 21h 00m

There are no direct flights from Trieste to Seattle. There are no popular flight routes from Trieste to Seattle.

Search flight deals

How far is Trieste Ronchi dei Legionari to Seattle/Tacoma Intl by plane?
A flight from Trieste Ronchi dei Legionari to Seattle/Tacoma Intl will travel around 5463.5 mi. 21h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Trieste Ronchi dei Legionari Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Trieste Ronchi dei Legionari Airport to Seattle/Tacoma Intl Airport were last updated today.
How old do you have to be to fly from Trieste Ronchi dei Legionari Airport to Seattle/Tacoma Intl 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 Trieste Ronchi dei Legionari Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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SeaTac

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Renton

Olympia

Lynnwood

Kent

Redmond

Marysville

Puyallup

Cle Elum

Lakewood

Tukwila

Federal Way

Fife

Westport

Centralia

Kirkland

Tumwater

Why use momondo?

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

Finding the right flight to Seattle from Trieste is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Trieste.

I’m not ready to book a flight from Trieste to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Trieste to Seattle 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.