How long does it take to fly to Trieste?

Average flight duration from Washington, D.C. to Trieste depends on which airport you fly into and out of. Flying from Washington, D.C. to Venice Marco Polo Airport is 10h 25m on average, while flying from Baltimore to Venice Marco Polo Airport is 11h 30m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

Which layover airport offers the lowest fares from Washington, D.C. to Trieste?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $667.

Which airport is the most popular layover for flights between Washington, D.C. and Trieste?

Rome (FCO) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Washington, D.C. to Trieste?

Flights connecting via Rome (FCO) have the shortest average one-way travel time: 11h 40m.

Which layover airport has the shortest connection time from Washington, D.C. to Trieste?

Rome (FCO) has the shortest average layover time for this route: 2h 18m.

When did momondo last update prices for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport?

Prices for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport are updated daily.

How many operators does momondo search for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport?

There is 1 operator available for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport as of March 2026.

How old do you have to be to fly from Washington, D.C. to Trieste Ronchi dei Legionari Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Trieste Ronchi dei Legionari Airport.

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

The travel and health documents you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$429 Cheap Flights from Washington, D.C. to Trieste in 2026

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Find the cheapest flights from Washington, D.C. to Trieste

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:20 pm - 10:35 pm

IAD

TRS

27h 15m

2 stops

11:20 am - 11:35 am

TRS

IAD

30h 15m

2 stops

$744Multiple Airlines

Tue, May 5 - Tue, May 12

1:20 pm - 10:35 pm

IAD

TRS

27h 15m

2 stops

11:15 am - 11:35 am

TRS

IAD

30h 20m

3 stops

$766Multiple Airlines

Tue, May 5 - Tue, May 12

1:20 pm - 2:20 pm

IAD

TRS

19h 00m

2 stops

11:15 am - 11:35 am

TRS

IAD

30h 20m

3 stops

$779Multiple Airlines

Mon, May 4 - Mon, May 11

4:30 pm - 6:30 pm

IAD

TRS

20h 00m

1 stop

6:35 am - 2:30 pm

TRS

IAD

13h 55m

1 stop

$1,107ITA Airways

Fri, Apr 17 - Tue, Apr 21

4:30 pm - 6:30 pm

IAD

TRS

20h 00m

1 stop

6:35 am - 2:30 pm

TRS

IAD

13h 55m

1 stop

$1,117ITA Airways

Fri, Apr 17 - Tue, Apr 21

11:20 pm - 6:30 pm

BWI

TRS

37h 10m

2 stops

11:15 am - 10:15 pm

TRS

BWI

17h 00m

2 stops

$1,595Icelandair

Tue, Jun 16 - Tue, Jun 23

8:30 pm - 6:30 pm

BWI

TRS

16h 00m

2 stops

11:15 am - 7:25 pm

TRS

BWI

38h 10m

2 stops

$1,609Icelandair

Tue, May 12 - Tue, May 26

1:05 pm - 10:25 am

DCA

TRS

15h 20m

2 stops

6:35 am - 7:58 pm

TRS

DCA

19h 23m

2 stops

$1,645United Airlines

Tue, May 12 - Tue, May 26

12:40 pm - 6:30 pm

BWI

TRS

23h 50m

2 stops

3:15 pm - 8:50 pm

TRS

BWI

35h 35m

2 stops

$1,682KLM

Sun, May 3 - Sun, May 10

1:05 pm - 10:25 am

DCA

TRS

15h 20m

2 stops

6:35 am - 7:58 pm

TRS

DCA

19h 23m

2 stops

$1,720United Airlines

Tue, May 12 - Tue, May 26

ITA Airways flights from Washington, D.C. to Trieste

Our best ITA Airways deals on Washington, D.C. to Trieste flight tickets

ITA Airways

Apr 17

IAD4:30 pmWashington, D.C. Dulles Intl

20h 00m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Apr 21

TRS6:35 amTrieste Ronchi dei Legionari

13h 55m

1 stop

IAD2:30 pmWashington, D.C. Dulles Intl

$1,107

ITA Airways

Apr 17

IAD4:30 pmWashington, D.C. Dulles Intl

20h 00m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Apr 21

TRS6:35 amTrieste Ronchi dei Legionari

13h 55m

1 stop

IAD2:30 pmWashington, D.C. Dulles Intl

$1,117

ITA Airways

May 12

IAD4:30 pmWashington, D.C. Dulles Intl

16h 00m

1 stop

TRS2:30 pmTrieste Ronchi dei Legionari

May 26

TRS6:35 amTrieste Ronchi dei Legionari

13h 55m

1 stop

IAD2:30 pmWashington, D.C. Dulles Intl

$1,135

TAP AIR PORTUGAL flights from Washington, D.C. to Trieste

Our best TAP AIR PORTUGAL deals on Washington, D.C. to Trieste flight tickets

TAP AIR PORTUGAL

May 12

IAD5:05 pmWashington, D.C. Dulles Intl

43h 25m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

May 26

TRS11:15 amTrieste Ronchi dei Legionari

33h 55m

2 stops

IAD3:10 pmWashington, D.C. Dulles Intl

$1,169

TAP AIR PORTUGAL

May 4

IAD10:35 pmWashington, D.C. Dulles Intl

37h 55m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

May 11

TRS3:15 pmTrieste Ronchi dei Legionari

29h 55m

2 stops

IAD3:10 pmWashington, D.C. Dulles Intl

$1,172

TAP AIR PORTUGAL

May 12

IAD10:35 pmWashington, D.C. Dulles Intl

37h 55m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

May 26

TRS11:15 amTrieste Ronchi dei Legionari

33h 55m

2 stops

IAD3:10 pmWashington, D.C. Dulles Intl

$1,220

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 5/5

1:20 pm-10:35 pm

2 stops27h 15m

Trieste Ronchi dei Legionari

Tue 5/12

11:20 am-11:35 am

2 stops30h 15m

$744

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 5/5

1:20 pm-10:35 pm

2 stops27h 15m

Trieste Ronchi dei Legionari

Tue 5/12

11:15 am-11:35 am

3 stops30h 20m

$766

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 5/4

1:20 pm-2:20 pm

2 stops19h 00m

Trieste Ronchi dei Legionari

Mon 5/11

11:15 am-11:35 am

3 stops30h 20m

$779

Quickest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 4/17

4:30 pm-6:30 pm

1 stop20h 00m

Trieste Ronchi dei Legionari

Tue 4/21

6:35 am-2:30 pm

1 stop13h 55m

$1,107

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 4/17

4:30 pm-6:30 pm

1 stop20h 00m

Trieste Ronchi dei Legionari

Tue 4/21

6:35 am-2:30 pm

1 stop13h 55m

$1,117

BaltimoreTrieste

BWI - TRS

BWITRS

Baltimore/Washington

Tue 6/16

11:20 pm-6:30 pm

2 stops37h 10m

Trieste Ronchi dei Legionari

Tue 6/23

11:15 am-10:15 pm

2 stops17h 00m

$1,595

BaltimoreTrieste

BWI - TRS

BWITRS

Baltimore/Washington

Tue 5/12

8:30 pm-6:30 pm

2 stops16h 00m

Trieste Ronchi dei Legionari

Tue 5/26

11:15 am-7:25 pm

2 stops38h 10m

$1,609

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Tue 5/12

1:05 pm-10:25 am

2 stops15h 20m

Trieste Ronchi dei Legionari

Tue 5/26

6:35 am-7:58 pm

2 stops19h 23m

$1,645

BaltimoreTrieste

BWI - TRS

BWITRS

Baltimore/Washington

Sun 5/3

12:40 pm-6:30 pm

2 stops23h 50m

Trieste Ronchi dei Legionari

Sun 5/10

3:15 pm-8:50 pm

2 stops35h 35m

$1,682

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Tue 5/12

1:05 pm-10:25 am

2 stops15h 20m

Trieste Ronchi dei Legionari

Tue 5/26

6:35 am-7:58 pm

2 stops19h 23m

$1,720

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. to Trieste

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

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Other information

What is the cheapest airline that flies from Washington, D.C. to Trieste Ronchi dei Legionari?

Icelandair, ITA Airways, and TAP AIR PORTUGAL are the most popular carriers operating from Washington, D.C. to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

United Airlines, Turkish Airlines and British Airways are the top three most popular airlines that fly to Trieste from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 10 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. to Trieste

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

Estimated round-trip price

Cheap Washington, D.C. to Trieste (WAS to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Trieste

Fastest flight time	10h 50m
Direct flights	None

The fastest flight from Washington, D.C. to Trieste takes 10h 50m

There are no direct flights from Washington, D.C. to Trieste. There are no popular flight routes from Washington, D.C. to Trieste.

Search flight deals

How far is Washington, D.C. to Trieste Ronchi dei Legionari by plane?
A flight from Washington, D.C. to Trieste Ronchi dei Legionari will travel around 4405.3 mi. Flights usually cover this in 10h 50m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport?
Prices for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport are updated daily.
How many operators does momondo search for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport?
There is 1 operator available for flights from Washington, D.C. to Trieste Ronchi dei Legionari Airport as of March 2026.
How old do you have to be to fly from Washington, D.C. to Trieste Ronchi dei Legionari Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Trieste Ronchi dei Legionari Airport.
What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?
The travel and health documents you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Trieste?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Trieste is ITA Airways (100% of total bookings).

Best airlines flying from Washington, D.C. to Trieste

Compare and see reviews for airlines that fly from Washington, D.C. to Trieste with momondo

Airline	Rating	Free Cancellation	Price
ITA Airways	PriceFrom $866	Free Cancellation	Rating 6.7 1,172 reviews		Search ITA Airways flights

Udine

Grado

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Trieste?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Trieste. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Trieste with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Trieste flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Trieste?

Once you have performed a search for Washington, D.C. to Trieste flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Trieste, momondo offers a useful price alert feature which will track prices for flights to Trieste from Washington, D.C. and alert you when they change.

An easier way to manage your Trieste trip

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Cheap flights from Washington, D.C. to Trieste from $463

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Trieste departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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ITA Airways flights from Washington, D.C. to Trieste

Our best ITA Airways deals on Washington, D.C. to Trieste flight tickets

TAP AIR PORTUGAL flights from Washington, D.C. to Trieste

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How to get the cheapest flight ticket from Washington, D.C. to Trieste

What is the cheapest airline that flies from Washington, D.C. to Trieste Ronchi dei Legionari?

What airlines fly to Trieste?

Which airport is the most popular layover for flights between Washington, D.C. and Trieste?

Which layover airport offers the lowest fares from Washington, D.C. to Trieste?

Which layover airport has the shortest travel time from Washington, D.C. to Trieste?

Which layover airport has the shortest connection time from Washington, D.C. to Trieste?

How long does it take to fly to Trieste?

When to book flights from Washington, D.C. to Trieste

Cheap Washington, D.C. to Trieste (WAS to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Trieste

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Direct flights

Best airlines flying from Washington, D.C. to Trieste

Compare and see reviews for airlines that fly from Washington, D.C. to Trieste with momondo

Traveling to a place near Trieste?

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An easier way to manage your Trieste trip

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List of cabin classes available on flights landing in Trieste. Availability may vary depending on flight origin and airline.

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