SEA - SOF

$306 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
$775
Typical prices: $651-$1,004
Turkish Airlines
Fri 12/28Mon 1/29
SEA - SOF • 1 stop
Cheapest one-way
$306
Typical prices: $371-$606
Multiple Airlines
Sat 11/24
SEA - SOF • 3 stops
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 27% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 28% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
London Heathrow (LHR)
Cheapest • Avg $702 (round-trip)
Munich Franz Josef Strauss (MUC)
Shortest trip • 15h 39m (one-way)
Insights
Insights
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We hope you love your trip to Sofia!
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

Mon, Dec 28 - Fri, Jan 29
Turkish Airlines Logo
7:05 pm - 3:10 pmSEA  Seattle/Tacoma Intl-SOF Sofia
34h 05m1 stop Istanbul
Turkish Airlines Logo
9:30 am - 5:10 pmSOF  Sofia-SEA Seattle/Tacoma Intl
17h 40m1 stop Istanbul
$775Turkish Airlines
Fri, Jan 29 - Sat, Feb 6
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
$801Lufthansa
Fri, Jan 29 - Sat, Feb 6
Multiple Airlines Logo
2:50 pm - 6:20 pmSEA  Seattle/Tacoma Intl-SOF Sofia
17h 30m1 stop Munich Franz Josef Strauss
Multiple Airlines Logo
6:00 am - 8:59 pmSOF  Sofia-SEA Seattle/Tacoma Intl
24h 59m2 stops Munich Franz Josef Strauss Toronto Pearson Intl
$811Multiple Airlines
Mon, Dec 28 - Fri, Jan 29
Multiple Airlines Logo
7:00 am - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
29h 55m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Multiple Airlines Logo
2:10 pm - 8:59 pmSOF  Sofia-SEA Seattle/Tacoma Intl
40h 49m2 stops Frankfurt am Main Toronto Pearson Intl
$813Multiple Airlines
Sun, Jan 17 - Thu, Jan 21
Turkish Airlines Logo
7:05 pm - 8:40 amSEA  Seattle/Tacoma Intl-SOF Sofia
27h 35m1 stop Istanbul
Turkish Airlines Logo
9:45 pm - 5:10 pmSOF  Sofia-SEA Seattle/Tacoma Intl
29h 25m1 stop Istanbul
$818Turkish Airlines
Sun, Jan 17 - Thu, Jan 21
Turkish Airlines Logo
7:05 pm - 8:40 amSEA  Seattle/Tacoma Intl-SOF Sofia
27h 35m1 stop Istanbul
Turkish Airlines Logo
4:00 pm - 5:10 pmSOF  Sofia-SEA Seattle/Tacoma Intl
35h 10m1 stop Istanbul
$818Turkish Airlines
Mon, Dec 28 - Fri, Jan 29
United Airlines Logo
7:00 am - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
29h 55m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
2:10 pm - 1:13 pmSOF  Sofia-SEA Seattle/Tacoma Intl
33h 03m3 stops Frankfurt am Main Toronto Pearson Intl Houston George Bush Intcntl
$819United Airlines
Fri, Jan 29 - Sat, Feb 6
Lufthansa Logo
7:00 am - 1:25 pmSEA  Seattle/Tacoma Intl-SOF Sofia
20h 25m2 stops Chicago O'Hare Intl Frankfurt am Main
Lufthansa Logo
6:25 am - 10:45 pmSOF  Sofia-SEA Seattle/Tacoma Intl
26h 20m2 stops Frankfurt am Main Chicago O'Hare Intl
$827Lufthansa
Sun, Dec 13 - Fri, Jan 8
United Airlines Logo
10:48 am - 10:55 pmSEA  Seattle/Tacoma Intl-SOF Sofia
26h 07m2 stops Chicago O'Hare Intl 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
$842United Airlines
Sun, Dec 13 - Mon, Jan 11
Lufthansa Logo
7:00 am - 1:15 pmSEA  Seattle/Tacoma Intl-SOF Sofia
20h 15m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Lufthansa Logo
7:05 pm - 6:22 pmSOF  Sofia-SEA Seattle/Tacoma Intl
33h 17m2 stops Munich Franz Josef Strauss Vancouver Intl
$868Lufthansa
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 with more confidence.

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

Round-trip flights from Seattle to Sofia typically range from $651 to $1,004. The lowest price found in the past 5 days was $775, on Turkish Airlines.

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

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Seattle to Sofia. It’s 19% cheaper than the average day, while Thursday is the most expensive, with prices 19% higher.

What’s the cheapest month to fly from Seattle to Sofia?

•January is the cheapest month to fly from Seattle to Sofia at $615 round-trip.
•June ($1,147) and July ($918) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 86% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Sofia the cheapest?

Flights from Seattle to Sofia are cheapest 26 weeks before departure. Booking in this window typically costs about 27% 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

$306
Beat the crowds with an average 66% drop in travelers.
The most popular month to fly with an average 81% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

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

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

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Seattle to Sofia?

    A nonstop flight from Seattle to Sofia takes 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.

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

    Round-trip flights from Seattle to Sofia range from $651 to $1,004, with an average of $851 over the past 12 months. Anything below $651 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 8% above the $851 route average. Book 26 weeks before departure for the lowest fares.

  • 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 $775 to $4,330. That means the highest observed fare was about 6x 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 $410, which is 17% below the typical average for this route.

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

    Sofia Airport (SOF) hosts 5 major car rental companies, with daily rates averaging $21 for economy cars. Top options include:

    • MEXRENTACAR
    • NU Car
    • Top Rent a Car - Bulgaria
    • Priceless
    • Easyrent

  • 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).

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

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

    • Istanbul (IST) - 40% of one-stop connections
    • Munich Franz Josef Strauss (MUC) - 25% of one-stop connections
    • Amsterdam Schiphol (AMS) - 18% of one-stop connections
    • Frankfurt am Main (FRA) - 13% of one-stop connections

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

    Yes. Flexible dates can save you up to 33% on flights from Seattle to Sofia. Friday is the cheapest departure day at $690 round-trip on average, while Thursday is the most expensive at $1,017, a difference of $327.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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 39m, compared with 15h 46m via Amsterdam Schiphol (AMS) and 16h 06m via Frankfurt am Main (FRA).

  • What is the time difference between Seattle and Sofia?

    Sofia is 9 hours ahead of Seattle (Eastern European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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.

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 are flexible, aim for a Friday departure and avoid flying on Thursday. On this route, Friday flights average $690, about $327 less than Thursday fares (32% 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 27% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Sofia trip for January. Fares historically average $615 round-trip in that month - typically $532 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
    • Hotel Consul

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