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$440+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LJU
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$682
(FlightHub)

One-way from

$440
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$831
From Washington to Slovenia
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One-way flight from Washington to Slovenia
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Highest demand for flights based on searches. 25% potential increase in price ($290 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:10 pmSEA - LJU
1 stop15h 05mTurkish Airlines
Mon 11/179:20 amLJU - SEA
1 stop16h 45mTurkish Airlines
Deal found 9/15$682
This oojo deal was found by Cheapflights users on 9/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:00 pmSEA - LJU
1 stop28h 25mTurkish Airlines
Thu 11/69:20 amLJU - SEA
1 stop16h 45mTurkish Airlines
Deal found 9/15$699
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1310:00 amSEA - LJU
2 stops23h 35mMultiple Airlines
Mon 11/173:10 pmLJU - SEA
2 stops41h 05mMultiple Airlines
Deal found 9/14$711
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/142:20 pmSEA - LJU
1 stop13h 55mLufthansa
Tue 10/216:20 amLJU - SEA
1 stop14h 35mLufthansa
Deal found 9/14$715
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/132:20 pmSEA - LJU
1 stop14h 00mLufthansa
Mon 11/178:10 pmLJU - SEA
2 stops25h 00mLufthansa
Deal found 9/14$719
This Air France deal was found by Cheapflights users on 9/14. 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.
Mon 10/136:35 pmSEA - LJU
1 stop32h 00mAir France
Mon 11/1712:25 pmLJU - SEA
1 stop32h 00mAir France
Deal found 9/14$725
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:00 amSEA - LJU
2 stops23h 35mMultiple Airlines
Tue 10/216:20 amLJU - SEA
1 stop14h 35mMultiple Airlines
Deal found 9/14$739
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:00 pmSEA - LJU
2 stops20h 30mLufthansa
Thu 11/66:35 amLJU - SEA
1 stop14h 35mLufthansa
Deal found 9/15$752
This Lufthansa deal was found by Cheapflights users on 9/14. 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 stop19h 20mLufthansa
Sun 12/79:45 amLJU - SEA
1 stop12h 35mLufthansa
Deal found 9/14$773
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 10/309:46 amSEA - LJU
2 stops17h 54mDelta
Thu 11/612:25 pmLJU - SEA
2 stops30h 53mDelta
Deal found 9/15$776
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/13:28 pmSEA - LJU
2 stops18h 07mSWISS
Thu 10/306:30 amLJU - SEA
2 stops24h 15mSWISS
Deal found 9/14$788

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 September 15, 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

Mon 10/13

7:10 pm-7:15 pm

1 stop15h 05m

Ljubljana Joze Pucnik

Mon 11/17

9:20 am-5:05 pm

1 stop16h 45m

$682

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Thu 10/30

8:00 pm-8:25 am

1 stop28h 25m

Ljubljana Joze Pucnik

Thu 11/6

9:20 am-5:05 pm

1 stop16h 45m

$699

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 10/13

10:00 am-6:35 pm

2 stops23h 35m

Ljubljana Joze Pucnik

Mon 11/17

3:10 pm-11:15 pm

2 stops41h 05m

$711

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Tue 10/14

2:20 pm-1:15 pm

1 stop13h 55m

Ljubljana Joze Pucnik

Tue 10/21

6:20 am-11:55 am

1 stop14h 35m

$715

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 10/13

2:20 pm-1:20 pm

1 stop14h 00m

Ljubljana Joze Pucnik

Mon 11/17

8:10 pm-12:10 pm

2 stops25h 00m

$719

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Tue 10/14

10:00 am-6:35 pm

2 stops23h 35m

Ljubljana Joze Pucnik

Tue 10/21

6:20 am-11:55 am

1 stop14h 35m

$739

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Thu 10/30

3:00 pm-7:30 pm

2 stops20h 30m

Ljubljana Joze Pucnik

Thu 11/6

6:35 am-12:10 pm

1 stop14h 35m

$752

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Wed 12/3

3:10 pm-7:30 pm

1 stop19h 20m

Ljubljana Joze Pucnik

Sun 12/7

9:45 am-1:20 pm

1 stop12h 35m

$773

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Tue 9/30

7:55 am-9:00 am

3 stops40h 05m

$440

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 12/29

7:00 am-9:55 am

2 stops17h 55m

$523

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 11 results
1
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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, February is the cheapest month in which you can book a flight from State of Washington to Slovenia (average of $710). Flying from State of Washington to Slovenia in June is currently the most expensive (average of $1,442). 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 September 15, 2025.

When flying from State of Washington to Slovenia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 13h 55m. 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, February is the cheapest month in which you can book a flight from State of Washington to Slovenia (average of $710). Flying from State of Washington to Slovenia in June is currently the most expensive (average of $1,442). 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

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Alternative routes for Washington to Slovenia

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$647Average$768FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$739Average$1,023FlexibilityNo cancel feeOn-time76%
DeltaCheapest$765Average$898FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$825Average$983FlexibilityNo cancel feeOn-time75%

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