HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Slovenia

$509+ Cheap flights from Washington to Slovenia

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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LJU
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Slovenia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Washington to Slovenia

Cheapest flights from Washington to Slovenia
Explore the most affordable flight options available from Washington to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Lufthansa deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:10 pmSEA - LJU
1 stop12h 30mLufthansa
Sun 12/76:35 amLJU - SEA
2 stops21h 41mLufthansa
Deal found 10/28$537
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:25 amSEA - LJU
2 stops21h 15mDelta
Sun 12/712:45 pmLJU - SEA
2 stops37h 09mDelta
Deal found 10/29$553
This Air France deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:35 amSEA - LJU
2 stops19h 05mAir France
Sun 12/2112:25 pmLJU - SEA
1 stop34h 00mAir France
Deal found 10/29$866
This Ovago deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:10 pmSEA - LJU
1 stop19h 20mLufthansa
Sun 12/2110:35 amLJU - SEA
1 stop34h 35mLufthansa
Deal found 10/29$907
This Trip.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:00 pmSEA - LJU
1 stop22h 50mLufthansa
Fri 12/199:45 amLJU - SEA
1 stop12h 35mLufthansa
Deal found 10/29$1,000
This Ovago deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:00 pmSEA - LJU
2 stops23h 15mMultiple Airlines
Fri 12/199:45 amLJU - SEA
2 stops18h 31mMultiple Airlines
Deal found 10/29$1,148
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:10 amSEA - LJU
2 stops21h 10mMultiple Airlines
Sun 12/219:45 amLJU - SEA
3 stops35h 25mMultiple Airlines
Deal found 10/29$1,305

Cheap flight deals from Washington to Slovenia

Keep the following information in mind while searching for Washington to Slovenia flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$537
(Lufthansa)

One-way from

$509
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$750
Provider with most accurate pricing for Seattle/Tacoma Intl-Ljubljana Joze Pucnik flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Ljubljana Joze Pucnik flights.
Search Deals
From Washington to Slovenia
Search Deals
One-way flight from Washington to Slovenia
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($304 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Slovenia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Washington to Slovenia that are best for you.

Fly from

Washington

Fly to

Slovenia

Route

Depart

Return

Price

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Wed 12/3

3:10 pm-12:40 pm

1 stop12h 30m

Ljubljana Joze Pucnik

Sun 12/7

6:35 am-7:16 pm

2 stops21h 41m

$537

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Wed 12/3

5:25 am-11:40 am

2 stops21h 15m

Ljubljana Joze Pucnik

Sun 12/7

12:45 pm-4:54 pm

2 stops37h 09m

$553

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Thu 4/9

7:10 pm-1:00 pm

1 stop32h 50m

Ljubljana Joze Pucnik

Sun 4/19

8:25 pm-5:15 pm

1 stop29h 50m

$720

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Tue 4/28

7:10 pm-7:30 pm

1 stop15h 20m

Ljubljana Joze Pucnik

Sat 5/9

9:40 am-5:15 pm

1 stop16h 35m

$749

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Tue 4/28

3:40 pm-7:15 pm

2 stops18h 35m

Ljubljana Joze Pucnik

Sat 5/9

6:25 am-12:20 pm

1 stop14h 55m

$755

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Sun 12/14

7:35 am-11:40 am

2 stops19h 05m

Ljubljana Joze Pucnik

Sun 12/21

12:25 pm-1:25 pm

1 stop34h 00m

$866

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Sun 12/14

3:10 pm-7:30 pm

1 stop19h 20m

Ljubljana Joze Pucnik

Sun 12/21

10:35 am-12:10 pm

1 stop34h 35m

$907

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 12/29

2:00 pm-9:55 am

1 stop34h 55m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Best time to book a flight from Washington to Slovenia

Have a flexible travel schedule? Discover the best time to fly to Slovenia from Washington 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 Washington to Slovenia

What is the cheapest month to book a flight from State of Washington to Slovenia?

Currently, December is the cheapest month in which you can book a flight from State of Washington to Slovenia (average of $540). Flying from State of Washington to Slovenia in June is currently the most expensive (average of $952). 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.

What is the cheapest time of day to fly from WA to SI?

Find hourly flight availability from Washington to Slovenia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from State of Washington to Slovenia in the evening. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight at noon.

Related info for your journey

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

  • How long is the flight from State of Washington to Slovenia?

    Departing from State of Washington to Slovenia will take you 12h 30m. There are 5454 mi between State of Washington and Slovenia. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Washington to Slovenia that include hotel bookings?

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

  • How can I find direct flights from Washington to Slovenia?

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

  • Can I find deals for business class flights from Washington to Slovenia?

    Yes. Cheapflights offers flight deals from Washington to Slovenia 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 State of Washington to Slovenia?

    Currently, December is the cheapest month in which you can book a flight from State of Washington to Slovenia (average of $540). Flying from State of Washington to Slovenia in June is currently the most expensive (average of $952). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Slovenia

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Gatwick flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
Boston to Heathrow flights
Newark to Orly flights
Newark to Gatwick flights
John F Kennedy Intl to Istanbul flights
Newark to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Orly flights
Miami to Madrid flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Madrid flights
Los Angeles to Heathrow flights
Newark to Madrid flights
John F Kennedy Intl to Stansted flights
LaGuardia to Charles de Gaulle flights
LaGuardia to Gatwick flights
John F Kennedy Intl to Luton flights
San Francisco to Heathrow flights
Newark to London City flights
John F Kennedy Intl to Barcelona-El Prat flights
Newark to Barcelona-El Prat flights
Los Angeles to Charles de Gaulle flights
John F Kennedy Intl to Malpensa flights
Dallas/Fort Worth to Heathrow flights
O'Hare Intl to Heathrow flights
John F Kennedy Intl to Lisbon flights
John F Kennedy Intl to Dublin flights
Boston to Charles de Gaulle flights
Newark to Malpensa flights
Newark to Istanbul flights
Baltimore to Heathrow flights
Newark to Dublin flights
Newark to Lisbon flights
O'Hare Intl to Charles de Gaulle flights
Dulles Intl to Charles de Gaulle flights
Newark to Luton flights
Seattle to Heathrow flights
O'Hare Intl to Frankfurt flights
Dulles Intl to Madrid flights
Newark to Stansted flights
San Francisco to Charles de Gaulle flights
John F Kennedy Intl to Amsterdam flights
Dallas/Fort Worth to Frankfurt flights
LaGuardia to Leonardo da Vinci/Fiumicino flights

Top 4 airlines flying from Washington to Slovenia

Discover the top 4 airlines that operate flights from Washington to Slovenia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$543Average$1,004FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$647Average$766FlexibilityNo cancel feeOn-time77%
DeltaCheapest$765Average$898FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$825Average$983FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.