In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest time of day to fly from TRS to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Trieste to Washington, D.C. as you normally would.

Most accurate provider : When it comes to deals on Trieste-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trieste-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trieste-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Trieste-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trieste-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Trieste to Washington, D.C.?

Located just 18.2 mi from the city center, Trieste Ronchi dei Legionari is the airport most travelers will use when flying to Washington, D.C. from Trieste. Booking flights from Ronchi dei Legionari (TRS) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 0 different airlines.

Can I find deals for flights from Trieste to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Trieste to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Trieste to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trieste to Washington, D.C..

Can I find deals for business class flights from Trieste to Washington, D.C.?

Yes. Cheapflights offers flight deals from Trieste to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$657+ Flights from Trieste to Washington, D.C.

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Cheap flight deals from Trieste to Washington, D.C.

One-way flights from Trieste to Washington, D.C.
Search for one-way flight options from Trieste to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Sun 12/216:35 amTRS - IAD

2 stops38h 40mTAP AIR PORTUGAL

Deal found 12/15

$657

Tue 12/236:35 amTRS - IAD

2 stops44h 25mTAP AIR PORTUGAL

Deal found 12/15

$715

Mon 12/226:35 amTRS - IAD

2 stops38h 00mTAP AIR PORTUGAL

Deal found 12/15

$884

Sat 12/207:15 pmTRS - IAD

2 stops32h 15mITA Airways

Deal found 12/15

$974

Sun 12/216:35 amTRS - IAD

1 stop14h 50mUnited Airlines

Deal found 12/15

$1,663

Sat 12/206:35 amTRS - IAD

1 stop14h 50mUnited Airlines

Deal found 12/15

$2,206

Find flight deals from Trieste to Washington, D.C.

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars

Provider with most accurate pricing for Trieste Ronchi dei Legionari-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Trieste Ronchi dei Legionari-Washington, D.C. (WAS) flights.

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Trieste to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Sun 12/21

6:35 am-3:15 pm

2 stops38h 40m

$657

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Tue 12/23

6:35 am-9:00 pm

2 stops44h 25m

$715

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Mon 12/22

6:35 am-2:35 pm

2 stops38h 00m

$884

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Wed 12/24

6:35 am-3:15 pm

2 stops38h 40m

$884

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Sat 12/20

7:15 pm-9:30 pm

2 stops32h 15m

$974

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Wed 12/24

6:35 am-3:25 pm

1 stop14h 50m

$1,663

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Mon 12/22

6:35 am-3:25 pm

1 stop14h 50m

$1,663

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Tue 12/23

6:35 am-3:25 pm

1 stop14h 50m

$1,663

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Sun 12/21

6:35 am-3:25 pm

1 stop14h 50m

$1,663

TriesteWashington, D.C.

TRS - IAD

TRSIAD

Trieste Ronchi dei Legionari

Sat 12/20

6:35 am-3:25 pm

1 stop14h 50m

$2,206

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Compare providers for flights from Trieste to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trieste to Washington, D.C. in December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Trieste-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Trieste-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Trieste-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Trieste-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Trieste-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Trieste to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Trieste with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Trieste to Washington, D.C.

What is the cheapest month to book a flight from Trieste to Washington, D.C.?

Currently, September is the cheapest month in which you can book a flight from Trieste to Washington, D.C. (average of $528). Flying from Trieste to Washington, D.C. in April is currently the most expensive (average of $831). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

What airport do you fly from for flights from Trieste to Washington, D.C.?
Located just 18.2 mi from the city center, Trieste Ronchi dei Legionari is the airport most travelers will use when flying to Washington, D.C. from Trieste. Booking flights from Ronchi dei Legionari (TRS) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 0 different airlines.
Can I find deals for flights from Trieste to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Trieste to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Trieste to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trieste to Washington, D.C..
Can I find deals for business class flights from Trieste to Washington, D.C.?
Yes. Cheapflights offers flight deals from Trieste to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Trieste to Washington, D.C.?
Currently, September is the cheapest month in which you can book a flight from Trieste to Washington, D.C. (average of $528). Flying from Trieste to Washington, D.C. in April is currently the most expensive (average of $831). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$657+ Cheap flights from Trieste (TRS) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Trieste to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Trieste to Washington, D.C.

One-way flights from Trieste to Washington, D.C.Search for one-way flight options from Trieste to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Search for one-way flight options from Trieste to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Find flight deals from Trieste to Washington, D.C.

Most accurate provider

Most trusted provider

Cheapflights Fare Finder

Use the filters below to find and compare flights from Trieste to Washington, D.C. that are best for you.

Compare providers for flights from Trieste to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Trieste to Washington, D.C. in December.

Best time to book a flight from Trieste to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Trieste with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Trieste to Washington, D.C.

What is the cheapest month to book a flight from Trieste to Washington, D.C.?

Related info for your journey

Find useful and relevant information for your journey from Trieste to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Trieste to Washington, D.C.?

Can I find deals for flights from Trieste to Washington, D.C. that include hotel bookings?

How can I find direct flights from Trieste to Washington, D.C.?

Can I find deals for business class flights from Trieste to Washington, D.C.?

What is the cheapest month to book a flight from Trieste to Washington, D.C.?

Traveling to a place near Washington, D.C.?

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Alternative routes for Trieste to Washington, D.C.

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One-way flights from Trieste to Washington, D.C.
Search for one-way flight options from Trieste to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.