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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 2h 58m.

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: 50% of momondo users choosing 1-stop flights on this route connected there.

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

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

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 9h 58m on average, while flying from Baltimore to Venice Marco Polo Airport is 11h 10m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

What airlines fly to Trieste?

United Airlines, British Airways and Turkish Airlines 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 49% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 11 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

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

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 14h 00m.

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 September 2025.

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.

$287 Cheap Flights from Washington, D.C. to Trieste in 2025/26

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One-way

Last minute

Cheap round-trip flights

9:45 am - 10:55 pmIAD-TRS

32h 10m3 stops

6:35 am - 8:54 pmTRS-IAD

20h 19m3 stops

$755Multiple Airlines

Find Deal

jue., oct. 30 - jue., nov. 6

6:30 pm - 7:05 pmIAD-TRS

19h 35m2 stops

7:15 pm - 9:00 pmTRS-IAD

31h 45m3 stops

$809Multiple Airlines

Find Deal

jue., oct. 30 - jue., nov. 6

6:05 pm - 7:55 pmIAD-TRS

20h 50m1 stop

6:25 am - 7:30 pmTRS-IAD

19h 05m2 stops

$818Multiple Airlines

Find Deal

jue., oct. 30 - jue., nov. 6

5:00 pm - 3:30 pmIAD-TRS

16h 30m2 stops

3:15 pm - 3:15 pmTRS-IAD

30h 00m2 stops

$833TAP AIR PORTUGAL

Find Deal

sáb., oct. 25 - dom., nov. 23

10:10 pm - 10:55 pmIAD-TRS

19h 45m2 stops

3:15 pm - 11:45 amTRS-IAD

26h 30m2 stops

$848Multiple Airlines

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jue., oct. 30 - jue., nov. 6

10:20 pm - 2:30 pmIAD-TRS

35h 10m3 stops

9:05 pm - 3:15 pmTRS-IAD

24h 10m2 stops

$852Multiple Airlines

Find Deal

sáb., oct. 25 - dom., nov. 23

9:40 pm - 6:30 pmIAD-TRS

38h 50m2 stops

3:15 pm - 12:45 pmTRS-IAD

50h 30m2 stops

$888Turkish Airlines

Find Deal

lun., oct. 20 - dom., oct. 26

1:30 pm - 6:30 pmIAD-TRS

23h 00m2 stops

3:15 pm - 7:15 pmTRS-IAD

34h 00m2 stops

$975Turkish Airlines

Find Deal

dom., nov. 30 - dom., dic. 7

7:00 pm - 2:05 pmIAD-TRS

14h 05m1 stop

6:25 am - 8:15 pmTRS-IAD

19h 50m1 stop

$1,131Lufthansa

Find Deal

jue., oct. 30 - jue., nov. 6

2:00 pm - 10:25 amDCA-TRS

14h 25m2 stops

6:35 am - 6:04 pmTRS-DCA

17h 29m2 stops

$3,316United Airlines

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sáb., dic. 20 - mié., dic. 24

Turkish Airlines flights from Washington, D.C. to Trieste

Our best Turkish Airlines deals on Washington, D.C. to Trieste flight tickets

Turkish Airlines

Oct 20

IAD9:40 pmWashington, D.C. Dulles Intl

38h 50m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Oct 26

TRS3:15 pmTrieste Ronchi dei Legionari

50h 30m

2 stops

IAD12:45 pmWashington, D.C. Dulles Intl

$888

Find similar

Turkish Airlines

Nov 30

IAD1:30 pmWashington, D.C. Dulles Intl

23h 00m

2 stops

TRS6:30 pmTrieste Ronchi dei Legionari

Dec 7

TRS3:15 pmTrieste Ronchi dei Legionari

34h 00m

2 stops

IAD7:15 pmWashington, D.C. Dulles Intl

$975

Find similar

Turkish Airlines

Mar 4

IAD1:30 pmWashington, D.C. Dulles Intl

27h 25m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

Mar 15

TRS3:15 pmTrieste Ronchi dei Legionari

26h 30m

2 stops

IAD12:45 pmWashington, D.C. Dulles Intl

$1,074

Find similar

United Airlines flights from Washington, D.C. to Trieste

Our best United Airlines deals on Washington, D.C. to Trieste flight tickets

United Airlines

Sep 17

IAD10:25 pmWashington, D.C. Dulles Intl

30h 00m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Oct 15

TRS6:35 amTrieste Ronchi dei Legionari

13h 35m

1 stop

IAD2:10 pmWashington, D.C. Dulles Intl

$2,436

Find similar

United Airlines

Dec 20

DCA2:00 pmWashington, D.C. Reagan-National

14h 25m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Dec 24

TRS6:35 amTrieste Ronchi dei Legionari

17h 29m

2 stops

DCA6:04 pmWashington, D.C. Reagan-National

$3,316

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momondo Fare Finder

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Fly to

Route

Depart

Return

Price

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

jue. 10/30

9:45 am-10:55 pm

3 stops32h 10m

Trieste Ronchi dei Legionari

jue. 11/6

6:35 am-8:54 pm

3 stops20h 19m

$755

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

jue. 10/30

6:30 pm-7:05 pm

2 stops19h 35m

Trieste Ronchi dei Legionari

jue. 11/6

7:15 pm-9:00 pm

3 stops31h 45m

$809

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

jue. 10/30

6:05 pm-7:55 pm

1 stop20h 50m

Trieste Ronchi dei Legionari

jue. 11/6

6:25 am-7:30 pm

2 stops19h 05m

$818

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

sáb. 10/25

5:00 pm-3:30 pm

2 stops16h 30m

Trieste Ronchi dei Legionari

dom. 11/23

3:15 pm-3:15 pm

2 stops30h 00m

$833

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

jue. 10/30

10:10 pm-10:55 pm

2 stops19h 45m

Trieste Ronchi dei Legionari

jue. 11/6

3:15 pm-11:45 am

2 stops26h 30m

$848

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

sáb. 10/25

10:20 pm-2:30 pm

3 stops35h 10m

Trieste Ronchi dei Legionari

dom. 11/23

9:05 pm-3:15 pm

2 stops24h 10m

$852

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

lun. 10/20

9:40 pm-6:30 pm

2 stops38h 50m

Trieste Ronchi dei Legionari

dom. 10/26

3:15 pm-12:45 pm

2 stops50h 30m

$888

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

dom. 11/30

1:30 pm-6:30 pm

2 stops23h 00m

Trieste Ronchi dei Legionari

dom. 12/7

3:15 pm-7:15 pm

2 stops34h 00m

$975

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

jue. 10/30

7:00 pm-2:05 pm

1 stop14h 05m

Trieste Ronchi dei Legionari

jue. 11/6

6:25 am-8:15 pm

1 stop19h 50m

$1,131

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

sáb. 12/20

2:00 pm-10:25 am

2 stops14h 25m

Trieste Ronchi dei Legionari

mié. 12/24

6:35 am-6:04 pm

2 stops17h 29m

$3,316

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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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What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Tuesday when prices can be found for as low as $866. This is often the case because there is less demand to fly during this day of the week. Flights from Washington, D.C. to Trieste on a Friday will generally be more expensive and average around $988. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Direct flights	None

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

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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 14h 05m, 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 September 2025.
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 $664	Free Cancellation	Rating 6.7 1,036 reviews		Search ITA Airways flights

Grado

Udine

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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.

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Cheap flights from Washington, D.C. to Trieste from $287

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 10/25. 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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Turkish Airlines flights from Washington, D.C. to Trieste

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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

What is the cheapest day to depart on your flight to Trieste?

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

TAP AIR PORTUGAL, ITA Airways, and Turkish Airlines are the most popular carriers operating 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?

Rome (FCO) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 14h 00m.

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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 2h 58m.

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

Direct flights

How far is Washington, D.C. to Trieste Ronchi dei Legionari by plane?

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

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

How old do you have to be to fly 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?

What is the most popular airline from Washington, D.C. to Trieste?

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?

Why use momondo?

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

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

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

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

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo