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.

$520 Cheap Flights from Trieste to Seattle in 2026/27

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.

6:35 am - 9:40 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 05m2 stops Rome Fiumicino Newark

6:50 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

18h 35m2 stops Newark Rome Fiumicino

$1,096United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 9:40 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 05m2 stops Rome Fiumicino Newark

6:50 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

18h 35m2 stops Newark Rome Fiumicino

$1,097United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 9:40 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 05m2 stops Rome Fiumicino Newark

6:50 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

18h 35m2 stops Newark Rome Fiumicino

$1,098United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 9:40 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 05m2 stops Rome Fiumicino Newark

6:50 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

18h 35m2 stops Newark Rome Fiumicino

$1,103United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 12:45 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

39h 10m3 stops Rome Fiumicino Toronto Pearson Intl Houston George Bush Intcntl

6:50 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

18h 35m2 stops Newark Rome Fiumicino

$1,244United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 12:45 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

39h 10m3 stops Rome Fiumicino Toronto Pearson Intl Houston George Bush Intcntl

8:30 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

40h 55m3 stops Denver Intl Newark Rome Fiumicino

$1,247United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 12:45 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

39h 10m3 stops Rome Fiumicino Toronto Pearson Intl Houston George Bush Intcntl

8:30 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

40h 55m3 stops Denver Intl Newark Rome Fiumicino

$1,248United Airlines

Thu, Jan 14 - Sun, Jan 17

6:35 am - 12:45 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

39h 10m3 stops Rome Fiumicino Toronto Pearson Intl Houston George Bush Intcntl

6:50 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

18h 35m2 stops Newark Rome Fiumicino

$1,249United Airlines

Thu, Jan 14 - Sun, Jan 17

11:15 am - 5:55 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

39h 40m2 stops Rome Fiumicino Reykjavik Keflavik Intl

7:10 pm - 6:30 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

39h 20m2 stops Reykjavik Keflavik Intl Rome Fiumicino

$1,346Icelandair

Wed, Oct 21 - Sun, Oct 25

6:35 am - 2:53 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

41h 18m3 stops Rome Fiumicino Chicago O'Hare Intl Houston George Bush Intcntl

10:56 pm - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

27h 29m2 stops Chicago O'Hare Intl Rome Fiumicino

$1,376United Airlines

Wed, Oct 21 - Sun, Oct 25

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United Airlines flights from Trieste to Seattle

Our best United Airlines deals on Trieste to Seattle flight tickets

United Airlines

Jan 14

TRS6:35 amTrieste Ronchi dei Legionari

24h 05m

2 stops

SEA9:40 pmSeattle/Tacoma Intl

Jan 17

SEA6:50 amSeattle/Tacoma Intl

18h 35m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,096

United Airlines

Jan 14

TRS6:35 amTrieste Ronchi dei Legionari

24h 05m

2 stops

SEA9:40 pmSeattle/Tacoma Intl

Jan 17

SEA6:50 amSeattle/Tacoma Intl

18h 35m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,097

United Airlines

Jan 14

TRS6:35 amTrieste Ronchi dei Legionari

24h 05m

2 stops

SEA9:40 pmSeattle/Tacoma Intl

Jan 17

SEA6:50 amSeattle/Tacoma Intl

18h 35m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,098

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-9:40 pm

2 stops24h 05m

Seattle/Tacoma Intl

Sun 1/17

6:50 am-10:25 am

2 stops18h 35m

$1,096

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-9:40 pm

2 stops24h 05m

Seattle/Tacoma Intl

Sun 1/17

6:50 am-10:25 am

2 stops18h 35m

$1,097

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-9:40 pm

2 stops24h 05m

Seattle/Tacoma Intl

Sun 1/17

6:50 am-10:25 am

2 stops18h 35m

$1,098

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-9:40 pm

2 stops24h 05m

Seattle/Tacoma Intl

Sun 1/17

6:50 am-10:25 am

2 stops18h 35m

$1,103

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-12:45 pm

3 stops39h 10m

Seattle/Tacoma Intl

Sun 1/17

6:50 am-10:25 am

2 stops18h 35m

$1,244

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-12:45 pm

3 stops39h 10m

Seattle/Tacoma Intl

Sun 1/17

8:30 am-10:25 am

3 stops40h 55m

$1,247

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-12:45 pm

3 stops39h 10m

Seattle/Tacoma Intl

Sun 1/17

8:30 am-10:25 am

3 stops40h 55m

$1,248

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 1/14

6:35 am-12:45 pm

3 stops39h 10m

Seattle/Tacoma Intl

Sun 1/17

6:50 am-10:25 am

2 stops18h 35m

$1,249

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Wed 10/21

11:15 am-5:55 pm

2 stops39h 40m

Seattle/Tacoma Intl

Sun 10/25

7:10 pm-6:30 pm

2 stops39h 20m

$1,346

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Wed 10/21

6:35 am-2:53 pm

3 stops41h 18m

Seattle/Tacoma Intl

Sun 10/25

10:56 pm-10:25 am

2 stops27h 29m

$1,376

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 airlines fly to Seattle?

Condor, British Airways and United Airlines are the top three most popular airlines that fly to Seattle from Trieste according to our data. Condor is the first choice among our users, with 36% 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

Best Price Found	$520
Fastest flight time	24h 05m
Direct flights	None

The best one-way flight to Seattle from Trieste in the past 72 hours is $520. The best round-trip flight deal from Trieste to Seattle found on momondo in the last 72 hours is $1,096.

The fastest flight from Trieste to Seattle takes 24h 05m

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

Search flight deals

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 05m 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 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.

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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.