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.

$528 Cheap Flights from Trieste to Seattle in 2025/26

1 adult

0 bags

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Find the cheapest flights from Trieste to Seattle

Round-trip

One-way

Cheap round-trip flights

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6:25 am - 1:10 pm

TRS

SEA

14h 45m1 stop

3:40 pm - 9:15 pm

SEA

TRS

45h 35m2 stops

$885Lufthansa

Sat, Mar 14 - Sat, Mar 28

6:25 am - 10:16 pm

TRS

SEA

23h 51m2 stops

3:40 pm - 12:55 pm

SEA

TRS

37h 15m2 stops

$915Multiple Airlines

Sat, Mar 14 - Sat, Mar 28

6:25 am - 1:10 pm

TRS

SEA

14h 45m1 stop

3:00 pm - 9:15 pm

SEA

TRS

22h 15m1 stop

$942Lufthansa

Sat, Mar 14 - Sat, Mar 28

6:35 am - 5:05 pm

TRS

SEA

43h 30m2 stops

7:00 pm - 10:55 pm

SEA

TRS

42h 55m2 stops

$1,291Turkish Airlines

Wed, Feb 11 - Sun, Feb 15

3:15 pm - 5:05 pm

TRS

SEA

34h 50m2 stops

7:00 pm - 6:30 pm

SEA

TRS

38h 30m2 stops

$1,504Turkish Airlines

Wed, Feb 11 - Sun, Feb 15

6:35 am - 10:16 pm

TRS

SEA

23h 41m2 stops

12:36 pm - 9:25 am

SEA

TRS

36h 49m3 stops

$1,514United Airlines

Sat, Mar 14 - Sat, Mar 28

Turkish Airlines flights from Trieste to Seattle

Our best Turkish Airlines deals on Trieste to Seattle flight tickets

Turkish Airlines

Feb 11

TRS6:35 amTrieste Ronchi dei Legionari

43h 30m

2 stops

SEA5:05 pmSeattle/Tacoma Intl

Feb 15

SEA7:00 pmSeattle/Tacoma Intl

42h 55m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

$1,291

Find similar

Turkish Airlines

Feb 11

TRS3:15 pmTrieste Ronchi dei Legionari

34h 50m

2 stops

SEA5:05 pmSeattle/Tacoma Intl

Feb 15

SEA7:00 pmSeattle/Tacoma Intl

38h 30m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

$1,504

Find similar

Lufthansa flights from Trieste to Seattle

Our best Lufthansa deals on Trieste to Seattle flight tickets

Lufthansa

Mar 14

TRS6:25 amTrieste Ronchi dei Legionari

14h 45m

1 stop

SEA1:10 pmSeattle/Tacoma Intl

Mar 28

SEA3:40 pmSeattle/Tacoma Intl

45h 35m

2 stops

TRS9:15 pmTrieste Ronchi dei Legionari

$885

Find similar

Lufthansa

Mar 14

TRS6:25 amTrieste Ronchi dei Legionari

14h 45m

1 stop

SEA1:10 pmSeattle/Tacoma Intl

Mar 28

SEA3:00 pmSeattle/Tacoma Intl

22h 15m

1 stop

TRS9:15 pmTrieste Ronchi dei Legionari

$942

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sat 3/14

6:25 am-1:10 pm

1 stop14h 45m

Seattle/Tacoma Intl

Sat 3/28

3:40 pm-9:15 pm

2 stops45h 35m

$885

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sat 3/14

6:25 am-10:16 pm

2 stops23h 51m

Seattle/Tacoma Intl

Sat 3/28

3:40 pm-12:55 pm

2 stops37h 15m

$915

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sat 3/14

6:25 am-1:10 pm

1 stop14h 45m

Seattle/Tacoma Intl

Sat 3/28

3:00 pm-9:15 pm

1 stop22h 15m

$942

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 2/11

6:35 am-5:05 pm

2 stops43h 30m

Seattle/Tacoma Intl

Sun 2/15

7:00 pm-10:55 pm

2 stops42h 55m

$1,291

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 2/11

3:15 pm-5:05 pm

2 stops34h 50m

Seattle/Tacoma Intl

Sun 2/15

7:00 pm-6:30 pm

2 stops38h 30m

$1,504

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sat 3/14

6:35 am-10:16 pm

2 stops23h 41m

Seattle/Tacoma Intl

Sat 3/28

12:36 pm-9:25 am

3 stops36h 49m

$1,514

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 5/24

8:45 pm-3:40 pm

3 stops51h 55m

$528

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 5/24

6:20 am-8:00 pm

2 stops22h 40m

$630

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 5/24

6:20 am-3:40 pm

1 stop18h 20m

$639

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Sun 5/24

6:35 am-10:18 pm

3 stops24h 43m

$1,938

Flights are sorted by cheapest round-trip flights first.

Sorted 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?

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

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	14h 45m
Direct flights	None

The fastest flight from Trieste to Seattle takes 14h 45m

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

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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. 14h 45m 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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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.