How do I get Price Alerts for flights from Trieste to Seattle?

Price Alerts will notify you by email when the price for flights to Seattle from Trieste decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

How can I save money on flights from Trieste to Seattle with momondo?

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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.

$1,089 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 - 6:45 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

21h 10m2 stops Rome Fiumicino Detroit Metropolitan Wayne County

9:30 am - 2:30 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

20h 00m2 stops Detroit Metropolitan Wayne County Rome Fiumicino

$1,089KLM

Thu, Dec 24 - Thu, Dec 31

6:35 am - 3:54 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

42h 19m2 stops Rome Fiumicino San Francisco

11:50 pm - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

25h 35m2 stops Chicago O'Hare Intl Rome Fiumicino

$1,148United Airlines

Wed, Apr 14 - Sun, Apr 18

6:35 am - 9:58 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 23m3 stops Rome Fiumicino Washington, D.C. Dulles Intl Los Angeles

6:57 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

42h 28m2 stops San Francisco Rome Fiumicino

$1,151United Airlines

Wed, Apr 14 - Sun, Apr 18

6:35 am - 3:54 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

42h 19m2 stops Rome Fiumicino San Francisco

11:50 pm - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

25h 35m2 stops Chicago O'Hare Intl Rome Fiumicino

$1,155United Airlines

Wed, Apr 14 - Sun, Apr 18

6:35 am - 9:56 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 21m3 stops Rome Fiumicino Washington, D.C. Dulles Intl Los Angeles

6:57 am - 10:25 amSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

42h 28m2 stops San Francisco Rome Fiumicino

$1,163United Airlines

Wed, Apr 14 - Sun, Apr 18

7:15 pm - 5:00 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

30h 45m3 stops Rome Fiumicino London Heathrow Reykjavik Keflavik Intl

2:35 pm - 10:55 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

23h 20m3 stops Reykjavik Keflavik Intl Brussels Bruxelles-National Rome Fiumicino

$1,347Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

3:15 pm - 5:10 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

34h 55m2 stops Rome Fiumicino Istanbul

2:35 pm - 10:55 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

23h 20m3 stops Reykjavik Keflavik Intl Brussels Bruxelles-National Rome Fiumicino

$1,350Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

6:35 am - 9:54 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

24h 19m2 stops Rome Fiumicino Detroit Metropolitan Wayne County

9:30 am - 2:30 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

20h 00m2 stops Detroit Metropolitan Wayne County Rome Fiumicino

$1,671KLM

Sat, Dec 26 - Sat, Jan 2

11:15 am - 12:00 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

33h 45m3 stops Rome Fiumicino Milan Linate Frankfurt am Main

1:50 pm - 9:05 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

22h 15m2 stops Frankfurt am Main Milan Linate

$1,921Multiple Airlines

Sat, Dec 26 - Sat, Jan 2

6:35 am - 5:00 pmTRS Trieste Ronchi dei Legionari-SEA Seattle/Tacoma Intl

19h 25m3 stops Rome Fiumicino Berlin Brandenburg Reykjavik Keflavik Intl

2:35 pm - 10:55 pmSEA Seattle/Tacoma Intl-TRS Trieste Ronchi dei Legionari

23h 20m3 stops Reykjavik Keflavik Intl Berlin Brandenburg Rome Fiumicino

$1,956Multiple Airlines

Sat, Dec 26 - Sat, Jan 2

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United Airlines flights from Trieste to Seattle

Our best United Airlines deals on Trieste to Seattle flight tickets

United Airlines

Apr 14

TRS6:35 amTrieste Ronchi dei Legionari

24h 23m

3 stops

SEA9:58 pmSeattle/Tacoma Intl

Apr 18

SEA6:57 amSeattle/Tacoma Intl

42h 28m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,148

United Airlines

Apr 14

TRS6:35 amTrieste Ronchi dei Legionari

42h 19m

2 stops

SEA3:54 pmSeattle/Tacoma Intl

Apr 18

SEA11:50 pmSeattle/Tacoma Intl

25h 35m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,151

United Airlines

Apr 14

TRS6:35 amTrieste Ronchi dei Legionari

42h 19m

2 stops

SEA3:54 pmSeattle/Tacoma Intl

Apr 18

SEA11:50 pmSeattle/Tacoma Intl

25h 35m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

$1,155

KLM flights from Trieste to Seattle

Our best KLM deals on Trieste to Seattle flight tickets

KLM

Dec 24

TRS6:35 amTrieste Ronchi dei Legionari

21h 10m

2 stops

SEA6:45 pmSeattle/Tacoma Intl

Dec 31

SEA9:30 amSeattle/Tacoma Intl

20h 00m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

$1,089

KLM

Dec 26

TRS6:35 amTrieste Ronchi dei Legionari

24h 19m

2 stops

SEA9:54 pmSeattle/Tacoma Intl

Jan 2

SEA9:30 amSeattle/Tacoma Intl

20h 00m

2 stops

TRS2:30 pmTrieste Ronchi dei Legionari

$1,671

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 12/24

6:35 am-6:45 pm

2 stops21h 10m

Seattle/Tacoma Intl

Thu 12/31

9:30 am-2:30 pm

2 stops20h 00m

$1,089

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/14

6:35 am-3:54 pm

2 stops42h 19m

Seattle/Tacoma Intl

Sun 4/18

11:50 pm-10:25 am

2 stops25h 35m

$1,148

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/14

6:35 am-9:58 pm

3 stops24h 23m

Seattle/Tacoma Intl

Sun 4/18

6:57 am-10:25 am

2 stops42h 28m

$1,151

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/14

6:35 am-3:54 pm

2 stops42h 19m

Seattle/Tacoma Intl

Sun 4/18

11:50 pm-10:25 am

2 stops25h 35m

$1,155

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Wed 4/14

6:35 am-9:56 pm

3 stops24h 21m

Seattle/Tacoma Intl

Sun 4/18

6:57 am-10:25 am

2 stops42h 28m

$1,163

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 12/24

7:15 pm-5:00 pm

3 stops30h 45m

Seattle/Tacoma Intl

Thu 12/31

2:35 pm-10:55 pm

3 stops23h 20m

$1,347

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Thu 12/24

3:15 pm-5:10 pm

2 stops34h 55m

Seattle/Tacoma Intl

Thu 12/31

2:35 pm-10:55 pm

3 stops23h 20m

$1,350

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Sat 12/26

6:35 am-9:54 pm

2 stops24h 19m

Seattle/Tacoma Intl

Sat 1/2

9:30 am-2:30 pm

2 stops20h 00m

$1,671

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Sat 12/26

11:15 am-12:00 pm

3 stops33h 45m

Seattle/Tacoma Intl

Sat 1/2

1:50 pm-9:05 pm

2 stops22h 15m

$1,921

TriesteSeattle

TRS Trieste Ronchi dei Legionari - SEA Seattle/Tacoma Intl

TRSSEA

Trieste Ronchi dei Legionari

Sat 12/26

6:35 am-5:00 pm

3 stops19h 25m

Seattle/Tacoma Intl

Sat 1/2

2:35 pm-10:55 pm

3 stops23h 20m

$1,956

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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	$1,089
Fastest flight time	24h 19m
Direct flights	None

The best flight deal from Trieste to Seattle found on momondo in the last 72 hours is $1,089

The fastest flight from Trieste to Seattle takes 24h 19m

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 19m 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.

Frequently asked questions about flying from Trieste to Seattle

How do I get Price Alerts for flights from Trieste to Seattle?
Price Alerts will notify you by email when the price for flights to Seattle from Trieste decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from Trieste to Seattle with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Kent

Olympia

Federal Way

Redmond

Lakewood

Lynnwood

Tukwila

Fife

Puyallup

Cle Elum

Marysville

Lacey

Kirkland

Centralia

Bothell

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.