SEA - SOF

$454 Find Cheap Flights from Seattle to Sofia - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$600
Typical prices: $627-$999
British Airways
Thu 10/18Fri 11/2
SEA - SOF • 1 stop
Cheapest one-way
$454
Typical prices: $380-$616
Lufthansa
Sun 11/4
SEA - SOF • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Seattle and Sofia. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
26 weeks
in advance
Our data shows that travelers who book at least 26 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
When to travel
October
Cheapest • 30% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Paris Charles de Gaulle (CDG)
Cheapest • Avg $630 (round-trip)
Munich Franz Josef Strauss (MUC)
Shortest trip • 15h 30m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Sofia (SEA-SOF)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Sofia

Sun, Oct 18 - Mon, Nov 2
British Airways Logo
1:30 pm - 7:20 pmSEA  Seattle/Tacoma Intl-SOF Sofia
19h 50m1 stop London Heathrow
British Airways Logo
5:15 pm - 4:50 pmSOF  Sofia-SEA Seattle/Tacoma Intl
33h 35m1 stop London Heathrow
$600British Airways
Tue, Dec 8 - Mon, Dec 21
British Airways Logo
1:30 pm - 8:10 pmSEA  Seattle/Tacoma Intl-SOF Sofia
20h 40m1 stop London Heathrow
British Airways Logo
5:15 pm - 11:25 amSOF  Sofia-SEA Seattle/Tacoma Intl
28h 10m1 stop London Heathrow
$600British Airways
Tue, Dec 8 - Wed, Dec 23
British Airways Logo
1:30 pm - 8:10 pmSEA  Seattle/Tacoma Intl-SOF Sofia
20h 40m1 stop London Heathrow
British Airways Logo
9:05 pm - 4:50 pmSOF  Sofia-SEA Seattle/Tacoma Intl
29h 45m1 stop London Heathrow
$600British Airways
Sun, Dec 6 - Fri, Dec 18
United Airlines Logo
2:50 pm - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
22h 05m1 stop Munich Franz Josef Strauss
United Airlines Logo
6:00 am - 1:00 pmSOF  Sofia-SEA Seattle/Tacoma Intl
17h 00m1 stop Munich Franz Josef Strauss
$630United Airlines
Wed, Dec 9 - Wed, Dec 23
United Airlines Logo
2:50 pm - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
22h 05m1 stop Munich Franz Josef Strauss
United Airlines Logo
6:00 am - 1:00 pmSOF  Sofia-SEA Seattle/Tacoma Intl
17h 00m1 stop Munich Franz Josef Strauss
$630United Airlines
Wed, Dec 9 - Fri, Dec 18
United Airlines Logo
2:50 pm - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
22h 05m1 stop Munich Franz Josef Strauss
United Airlines Logo
6:00 am - 1:00 pmSOF  Sofia-SEA Seattle/Tacoma Intl
17h 00m1 stop Munich Franz Josef Strauss
$630United Airlines
Wed, Mar 3 - Sat, Mar 13
Lufthansa Logo
2:50 pm - 6:20 pmSEA  Seattle/Tacoma Intl-SOF Sofia
17h 30m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:25 am - 12:00 pmSOF  Sofia-SEA Seattle/Tacoma Intl
15h 35m1 stop Frankfurt am Main
$690Lufthansa
Wed, Mar 3 - Mon, Mar 15
Lufthansa Logo
2:50 pm - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
22h 05m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:25 am - 1:00 pmSOF  Sofia-SEA Seattle/Tacoma Intl
15h 35m1 stop Frankfurt am Main
$692Lufthansa
Thu, Oct 8 - Mon, Oct 19
Turkish Airlines Logo
7:15 pm - 3:00 pmSEA  Seattle/Tacoma Intl-SOF Sofia
33h 45m1 stop Istanbul
Turkish Airlines Logo
3:50 pm - 5:20 pmSOF  Sofia-SEA Seattle/Tacoma Intl
35h 30m1 stop Istanbul
$775Turkish Airlines
Thu, Oct 8 - Mon, Oct 19
Turkish Airlines Logo
7:15 pm - 8:20 pmSEA  Seattle/Tacoma Intl-SOF Sofia
15h 05m1 stop Istanbul
Turkish Airlines Logo
3:50 pm - 5:20 pmSOF  Sofia-SEA Seattle/Tacoma Intl
35h 30m1 stop Istanbul
$792Turkish Airlines
Booking Insights

Price, demand and travel trends for Seattle to Sofia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to Sofia with more confidence.

How much is a round-trip flight from Seattle to Sofia?

Round-trip flights from Seattle to Sofia start at $600. Prices are below average for this route right now, with typical round-trip fares ranging from $627 to $999. The lowest price found in the past 5 days was $600 on British Airways.

What's the cheapest day of the week to fly from Seattle to Sofia?

Friday is the cheapest day of the week to fly from Seattle to Sofia, it is 18% cheaper than the average day. Thursday is the most expensive day with flight prices 14% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Seattle to Sofia?

•October is the cheapest month to fly from Seattle to Sofia at $587 round-trip.
•June ($1,147) and July ($917) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 95% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to Sofia the cheapest?

Flights from Seattle to Sofia are cheapest 26 weeks before departure. Booking in this window typically costs about 38% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Seattle to Sofia flights

Low season

February

Cheapest flight

$454
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 36% increase in price.
Flight from Seattle to Sofia

When to book flights from Seattle to Sofia

Are your dates flexible? Find out the best times to travel from Seattle to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to Sofia flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Seattle to Sofia?

    Flights from Seattle to Sofia usually depart from Seattle/Tacoma Intl (SEA) and arrive at Sofia (SOF).

  • What cabin classes can I book on flights from Seattle to Sofia?

    Two cabin classes are available on flights from Seattle to Sofia:

    • Economy Class
    • Premium Economy Class

  • Which airports do connecting flights from Seattle to Sofia pass through?

    One-stop flights from Seattle to Sofia most commonly connect through:

    • Istanbul (IST) - 42% of one-stop connections
    • Munich Franz Josef Strauss (MUC) - 22% of one-stop connections
    • Amsterdam Schiphol (AMS) - 18% of one-stop connections
    • Frankfurt am Main (FRA) - 14% of one-stop connections

    Istanbul (IST) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Sofia?

    Yes. Being flexible with your travel dates can save you up to 29% on the Seattle to Sofia route. Friday is the cheapest departure day at $690 round-trip on average, while Thursday is the most expensive at $967, a difference of $277. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Sofia?

    Some of the most popular sights in Sofia are Vasil Levski National Stadium, National Palace of Culture and Central Sofia Market Hall. These are among the most viewed places in Sofia on KAYAK.

  • How expensive are last-minute Seattle to Sofia flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 14% above the route average of $841. Book 26 weeks before departure for the lowest fares.

  • How long is a flight from Seattle to Sofia?

    A nonstop flight from Seattle to Sofia takes 0h 00m, covering 5,862 miles.

  • Do I need a passport to fly from Seattle to Sofia?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Seattle to Sofia changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $600 to $4,505. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Seattle to Sofia looking right now?

    One-way fares from Seattle to Sofia are currently lower than usual. Average one-way flight prices are about $493, which is 8% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Seattle to Sofia?

    Flying via Munich Franz Josef Strauss (MUC) gives the shortest average 1-stop total travel time at 15h 30m, compared with 15h 40m via Amsterdam Schiphol (AMS) and 16h 06m via Paris Charles de Gaulle (CDG).

  • What is the time difference between Seattle and Sofia?

    Sofia is 10 hours ahead of Seattle (Eastern European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Sofia Airport (SOF)?

    Sofia Airport (SOF) hosts 5 major car rental companies, with daily rates starting from around $1 for economy cars. Top options include:
    • MEXRENTACAR
    • Easyrent
    • Top Rent a Car - Bulgaria
    • NU Car
    • Priceless

  • How much should I expect to pay for a Seattle to Sofia flight?

    Round-trip flights from Seattle to Sofia range from $627 to $999, with an average of $841 over the past 12 months. Anything below $627 counts as a good deal.

Your guide to booking Seattle to Sofia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Friday departure instead of Thursday. On this route, Friday flights average $690 - about $277 less than Thursday (29% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 26 weeks before you fly. On this route, that window historically saves about 38% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Sofia trip for October. Fares historically average $587 round-trip in that month - typically $560 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Sofia Airport.
    - Hotel Premier Airport Sofia
    - ibis Sofia Airport
    - Avel Guest House

More options for your flight from Seattle to Sofia

Complete your trip to Sofia with a hotel stay or car rental

Car rentals in Sofia
Hotels in Sofia
Vacations in Sofia