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$500+ Cheap flights from Seattle (SEA) 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 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Find flight deals from Seattle to Slovenia

Cheapest flights from Seattle to Slovenia
Explore the most affordable flight options available from Seattle to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Lufthansa deal was found by Cheapflights users on 10/12. 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
2 stops18h 31mLufthansa
Deal found 10/12$539
This Delta deal was found by Cheapflights users on 10/12. 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 12/310:05 pmSEA - LJU
2 stops28h 35mDelta
Sun 12/712:45 pmLJU - SEA
2 stops35h 14mDelta
Deal found 10/12$553
This SWISS deal was found by Cheapflights users on 10/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:05 pmSEA - LJU
2 stops24h 10mSWISS
Sun 12/72:30 pmLJU - SEA
2 stops41h 45mSWISS
Deal found 10/11$558
This FlightHub deal was found by Cheapflights users on 10/13. 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.
Sat 10/187:10 pmSEA - LJU
1 stop28h 20mTurkish Airlines
Wed 10/222:05 pmLJU - SEA
1 stop29h 30mTurkish Airlines
Deal found 10/13$749
This FlightHub deal was found by Cheapflights users on 10/12. 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 stop28h 20mTurkish Airlines
Mon 11/179:20 amLJU - SEA
1 stop16h 45mTurkish Airlines
Deal found 10/12$843
This Delta deal was found by Cheapflights users on 10/12. 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.
Mon 10/137:19 amSEA - LJU
2 stops19h 16mDelta
Mon 11/1712:50 pmLJU - SEA
1 stop31h 55mDelta
Deal found 10/12$882
This FlightHub deal was found by Cheapflights users on 10/12. 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 10/132:55 pmSEA - LJU
2 stops19h 30mMultiple Airlines
Mon 11/178:10 pmLJU - SEA
2 stops32h 06mMultiple Airlines
Deal found 10/12$888
This Mytrip deal was found by Cheapflights users on 10/13. 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.
Sat 10/1812:30 pmSEA - LJU
3 stops35h 30mMultiple Airlines
Wed 10/225:05 pmLJU - SEA
3 stops33h 10mMultiple Airlines
Deal found 10/13$1,193

Cheap flight deals from Seattle to Slovenia

Keep the following information in mind while searching for Seattle to Slovenia flight deals. Data was last updated October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$491
(Kiwi.com)

Popular in

June

Cheapest in

January

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 Seattle/Tacoma Intl to Slovenia
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($297 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($43 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 Seattle 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 14, 2025.
Use the filters below to find and compare flights from Seattle to Slovenia that are best for you.

Fly from

Seattle

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

9:45 am-1:20 pm

1 stop12h 35m

$539

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Wed 12/3

10:05 pm-11:40 am

2 stops28h 35m

Ljubljana Joze Pucnik

Sun 12/7

12:45 pm-2:59 pm

2 stops35h 14m

$553

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Wed 12/3

1:05 pm-10:15 pm

2 stops24h 10m

Ljubljana Joze Pucnik

Sun 12/7

2:30 pm-11:15 pm

2 stops41h 45m

$558

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 3/2

7:00 pm-8:25 am

1 stop28h 25m

Ljubljana Joze Pucnik

Sat 3/14

9:20 am-6:05 pm

1 stop16h 45m

$712

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 3/2

8:10 am-2:05 pm

2 stops20h 55m

Ljubljana Joze Pucnik

Sat 3/14

6:55 am-1:10 pm

1 stop14h 15m

$728

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 3/2

12:37 pm-10:25 pm

2 stops24h 48m

Ljubljana Joze Pucnik

Sat 3/14

6:30 am-10:32 pm

2 stops24h 02m

$14,194

SeattleLjubljana

SEA - LJU

SEALJU

Seattle/Tacoma Intl

Mon 12/29

7:00 am-9:20 am

2 stops41h 20m

$500

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Best time to book a flight from Seattle to Slovenia

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

What is the cheapest month to book a flight from Seattle to Slovenia?

Currently, March is the cheapest month in which you can book a flight from Seattle to Slovenia (average of $644). Flying from Seattle 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 SEA to SI?

Find hourly flight availability from Seattle 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 14, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 38% on flights from Seattle to Slovenia by exploring options for tickets in the evening.

Reviews of airlines servicing Slovenia

Get insights into the airlines that provide service to Slovenia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Slovenia. Reviews last updated October 14, 2025.
Read through reviews of airlines operating flights from Seattle to Slovenia, such as Delta, KLM, and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,402 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Turkish Airlines
7.3
Good
4,007 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Lufthansa
6.8
Okay
7,480 reviews
Delta
8.0
Very good
7,973 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Slovenia. 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 Seattle to Slovenia?

    If you book a flight to Slovenia from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How long is the flight from Seattle to Slovenia?

    There are many flights that can get you from Seattle to Slovenia in 12h 30m. Fly via Lufthansa or Delta to get the fastest option. The distance from Seattle to Slovenia is about 5454 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Slovenia?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Slovenia (average of $644). Flying from Seattle 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

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Top 4 airlines flying from Seattle to Slovenia

Discover the top 4 airlines that operate flights from Seattle 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 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$647Average$766FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$739Average$1,029FlexibilityNo cancel feeOn-time76%
DeltaCheapest$765Average$898FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$825Average$983FlexibilityNo cancel feeOn-time75%

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