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.

$930 Cheap Flights from Trieste to Seattle in 2026

Find the cheapest flights from Trieste to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:15 pm - 5:40 pm

TRS

SEA

35h 25m

1 stop

5:30 pm - 10:55 pm

SEA

TRS

20h 25m

1 stop

$1,096Multiple Airlines

Thu, Jul 2 - Mon, Jul 6

3:15 pm - 5:40 pm

TRS

SEA

35h 25m

1 stop

5:30 pm - 10:55 pm

SEA

TRS

20h 25m

1 stop

$1,129Multiple Airlines

Wed, Jul 1 - Sun, Jul 5

6:15 am - 6:32 pm

TRS

SEA

21h 17m

2 stops

10:45 am - 1:55 pm

SEA

TRS

18h 10m

2 stops

$1,190Multiple Airlines

Thu, Jul 2 - Mon, Jul 6

11:15 am - 3:30 pm

TRS

SEA

37h 15m

1 stop

2:00 pm - 2:30 pm

SEA

TRS

15h 30m

1 stop

$1,192Air France

Wed, Jul 1 - Sun, Jul 5

3:15 pm - 5:55 pm

TRS

SEA

35h 40m

3 stops

3:40 pm - 10:25 pm

SEA

TRS

21h 45m

3 stops

$1,195Multiple Airlines

Thu, Jul 2 - Mon, Jul 6

11:15 am - 11:59 pm

TRS

SEA

21h 44m

2 stops

2:00 pm - 6:30 pm

SEA

TRS

19h 30m

1 stop

$1,200Air France

Wed, Jul 1 - Sun, Jul 5

6:15 am - 6:32 pm

TRS

SEA

21h 17m

2 stops

2:10 pm - 1:55 pm

SEA

TRS

14h 45m

1 stop

$1,239Multiple Airlines

Thu, Jul 2 - Mon, Jul 6

6:10 am - 6:32 pm

TRS

SEA

21h 22m

2 stops

10:45 am - 10:15 pm

SEA

TRS

26h 30m

2 stops

$1,252Multiple Airlines

Wed, Jul 1 - Sun, Jul 5

6:35 am - 9:59 pm

TRS

SEA

24h 24m

2 stops

7:11 am - 6:30 pm

SEA

TRS

26h 19m

2 stops

$1,276ITA Airways

Fri, Oct 2 - Mon, Oct 5

6:35 am - 9:59 pm

TRS

SEA

24h 24m

2 stops

7:11 am - 6:30 pm

SEA

TRS

26h 19m

2 stops

$1,280ITA Airways

Fri, Oct 2 - Mon, Oct 5

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ITA Airways flights from Trieste to Seattle

Our best ITA Airways deals on Trieste to Seattle flight tickets

ITA Airways

Oct 2

TRS6:35 amTrieste Ronchi dei Legionari

24h 24m

2 stops

SEA9:59 pmSeattle/Tacoma Intl

Oct 5

SEA7:11 amSeattle/Tacoma Intl

26h 19m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

$1,276

ITA Airways

Oct 2

TRS6:35 amTrieste Ronchi dei Legionari

24h 24m

2 stops

SEA9:59 pmSeattle/Tacoma Intl

Oct 5

SEA7:11 amSeattle/Tacoma Intl

26h 19m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

$1,280

United Airlines flights from Trieste to Seattle

Our best United Airlines deals on Trieste to Seattle flight tickets

United Airlines

Oct 2

TRS6:35 amTrieste Ronchi dei Legionari

24h 20m

2 stops

SEA9:55 pmSeattle/Tacoma Intl

Oct 5

SEA10:58 pmSeattle/Tacoma Intl

26h 27m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,291

United Airlines

Oct 2

TRS6:35 amTrieste Ronchi dei Legionari

47h 02m

3 stops

SEA8:37 pmSeattle/Tacoma Intl

Oct 5

SEA10:58 pmSeattle/Tacoma Intl

50h 27m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,293

United Airlines

Oct 2

TRS6:35 amTrieste Ronchi dei Legionari

47h 02m

3 stops

SEA8:37 pmSeattle/Tacoma Intl

Oct 5

SEA10:58 pmSeattle/Tacoma Intl

50h 27m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,294

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Thu 7/2

3:15 pm-5:40 pm

1 stop35h 25m

Seattle/Tacoma Intl

Mon 7/6

5:30 pm-10:55 pm

1 stop20h 25m

$1,096

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 7/1

3:15 pm-5:40 pm

1 stop35h 25m

Seattle/Tacoma Intl

Sun 7/5

5:30 pm-10:55 pm

1 stop20h 25m

$1,129

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Thu 7/2

6:15 am-6:32 pm

2 stops21h 17m

Seattle/Tacoma Intl

Mon 7/6

10:45 am-1:55 pm

2 stops18h 10m

$1,190

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 7/1

11:15 am-3:30 pm

1 stop37h 15m

Seattle/Tacoma Intl

Sun 7/5

2:00 pm-2:30 pm

1 stop15h 30m

$1,192

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Thu 7/2

3:15 pm-5:55 pm

3 stops35h 40m

Seattle/Tacoma Intl

Mon 7/6

3:40 pm-10:25 pm

3 stops21h 45m

$1,195

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 7/1

11:15 am-11:59 pm

2 stops21h 44m

Seattle/Tacoma Intl

Sun 7/5

2:00 pm-6:30 pm

1 stop19h 30m

$1,200

Quickest round-trip

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Thu 7/2

6:15 am-6:32 pm

2 stops21h 17m

Seattle/Tacoma Intl

Mon 7/6

2:10 pm-1:55 pm

1 stop14h 45m

$1,239

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Wed 7/1

6:10 am-6:32 pm

2 stops21h 22m

Seattle/Tacoma Intl

Sun 7/5

10:45 am-10:15 pm

2 stops26h 30m

$1,252

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Fri 10/2

6:35 am-9:59 pm

2 stops24h 24m

Seattle/Tacoma Intl

Mon 10/5

7:11 am-6:30 pm

2 stops26h 19m

$1,276

TriesteSeattle

TRS - SEA

TRSSEA

Trieste Ronchi dei Legionari

Fri 10/2

6:35 am-9:59 pm

2 stops24h 24m

Seattle/Tacoma Intl

Mon 10/5

7:11 am-6:30 pm

2 stops26h 19m

$1,280

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 airlines fly to Seattle?

British Airways, Condor and United Airlines 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 33% 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	24h 24m
Direct flights	None

The fastest flight from Trieste to Seattle takes 24h 24m

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

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Frequently asked questions about flying from Trieste to Seattle

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. 24h 24m 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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Olympia

Lynnwood

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Kent

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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.