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$562 Cheap Flights from Sofia (SOF) to Seattle (SEA)

View $562 flight on Thu, Oct 15, 2026Opens in a new window

Popular airlines from Sofia Airport (SOF) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Sofia to Seattle (SOF-SEA)

Prices were available within the past 7 days and start at $562 for one-way flights and $935 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tarom-Romanian Air Transport
Mon, Oct 26 - Mon, Nov 23
SOF
Sofia
SEA
Seattle
$935 Roundtrip, found 4 days ago
$935
Roundtrip
found 4 days ago
Select Tarom-Romanian Air Transport flight, departing Mon, Oct 26 from Sofia to Seattle, returning Mon, Nov 23, priced at $935 found 4 days ago
Tarom-Romanian Air Transport
Mon, Oct 26 - Mon, Nov 23
SOF
Sofia
SEA
Seattle
$940 Roundtrip, found 4 days ago
$940
Roundtrip
found 4 days ago
Select Tarom-Romanian Air Transport flight, departing Mon, Oct 26 from Sofia to Seattle, returning Mon, Nov 23, priced at $940 found 4 days ago
Tarom-Romanian Air Transport
Mon, Oct 26 - Mon, Nov 23
SOF
Sofia
SEA
Seattle
$946 Roundtrip, found 4 days ago
$946
Roundtrip
found 4 days ago
Select Tarom-Romanian Air Transport flight, departing Mon, Oct 26 from Sofia to Seattle, returning Mon, Nov 23, priced at $946 found 4 days ago
Tarom-Romanian Air Transport
Mon, Oct 26 - Mon, Nov 23
SOF
Sofia
SEA
Seattle
$951 Roundtrip, found 4 days ago
$951
Roundtrip
found 4 days ago
Select Tarom-Romanian Air Transport flight, departing Mon, Oct 26 from Sofia to Seattle, returning Mon, Nov 23, priced at $951 found 4 days ago
Tarom-Romanian Air Transport
Mon, Oct 26 - Mon, Nov 23
SOF
Sofia
SEA
Seattle
$952 Roundtrip, found 4 days ago
$952
Roundtrip
found 4 days ago
Select Tarom-Romanian Air Transport flight, departing Mon, Oct 26 from Sofia to Seattle, returning Mon, Nov 23, priced at $952 found 4 days ago
Tarom-Romanian Air Transport
Mon, Oct 26 - Mon, Nov 23
SOF
Sofia
SEA
Seattle
$954 Roundtrip, found 4 days ago
$954
Roundtrip
found 4 days ago
Select Tarom-Romanian Air Transport flight, departing Mon, Oct 26 from Sofia to Seattle, returning Mon, Nov 23, priced at $954 found 4 days ago
Lufthansa
Wed, Sep 16 - Wed, Jun 23
SOF
Sofia
SEA
Seattle
$1,020 Roundtrip, found 6 days ago
$1,020
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Sep 16 from Sofia to Seattle, returning Wed, Jun 23, priced at $1,020 found 6 days ago
United
Thu, Sep 17 - Sat, Jun 19
SOF
Sofia
SEA
Seattle
$1,020 Roundtrip, found 6 days ago
$1,020
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 17 from Sofia to Seattle, returning Sat, Jun 19, priced at $1,020 found 6 days ago
Swiss International Air Lines
Wed, Sep 30 - Mon, Oct 19
SOF
Sofia
SEA
Seattle
$1,040 Roundtrip, found 23 hours ago
$1,040
Roundtrip
found 23 hours ago
Select Swiss International Air Lines flight, departing Wed, Sep 30 from Sofia to Seattle, returning Mon, Oct 19, priced at $1,040 found 23 hours ago
Air Canada
Thu, Oct 22 - Thu, Jan 14
SOF
Sofia
SEA
Seattle
$1,041 Roundtrip, found 1 day ago
$1,041
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 22 from Sofia to Seattle, returning Thu, Jan 14, priced at $1,041 found 1 day ago

What you need to know for your flight from Sofia to Seattle - Tacoma Intl.

Sofia (SOF) to Seattle (SEA) at a glance

Explore a range of airlines flying from Sofia (SOF) to Seattle (SEA) on this international long-haul journey. You can compare options from both full-service and low-cost carriers to discover the itinerary that best suits your budget and travel plans while you experience Seattle's iconic attractions and vibrant neighborhoods. Get all the essential details for flights departing from Sofia Airport (SOF) to Seattle-Tacoma International Airport (SEA).

  • Fastest flight duration: around 13h 15m in-flight, plus roughly 3 hours layover with one stop
  • Route distance: roughly 5,900 miles (9,500 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $370–$1060, depending on seasonality and how far ahead you book

Flights from Sofia Airport (SOF) to Seattle - Tacoma International Airport (SEA)

Based on recent traveler bookings, here are the top airlines favored for one-stop flights from Sofia to Seattle, often featuring layovers at Frankfurt International Airport (FRA) for about 3 hours, Istanbul Airport (IST) with a layover of approximately 3 hours and 45 minutes, and Franz Josef Strauss International Airport (MUC) with a 1 hour and 45-minute stop. These options allow you to balance price, total travel time, and cabin class to create the ideal travel itinerary.

  • Lufthansa: This full-service airline provides one-stop flights, with one-way ticket prices generally between $370 and $1020. It represents around 48% of the departures on this route, featuring an in-flight duration of 13 hours and 15 minutes, and an overall travel time close to 16 hours and 15 minutes, including layover.
  • Turkish Airlines: As a full-service carrier, Turkish Airlines offers one-stop services with one-way fares usually in the range of $430 to $1090. It constitutes about 35% of the flights on this route, with a flight time of 13 hours and 15 minutes and a total journey time of approximately 16 hours and 15 minutes, factoring in layover.
  • United: This full-service airline provides one-stop flights, with one-way fares that typically range from $905 to $2530. United accounts for around 10% of departures for this route, with an in-flight time of 13 hours and 15 minutes and a total travel duration of about 16 hours and 15 minutes, including layover.
  • Condor: A low-cost option, Condor offers one-stop service with one-way fares generally ranging from $620 to $770. It makes up about 5% of the departures on this route, featuring a flight time of 13 hours and 15 minutes, and a total journey time of roughly 16 hours and 15 minutes, including layover.

Alternative route from Sofia (SOF) to Seattle (SEA)

  • Sofia to Seattle (SOF-BFI): Boeing Field Airport (BFI) is located approximately 6 miles from Seattle - Tacoma International Airport (SEA), providing convenient access to the city.

How to find the best prices for flights from Sofia (SOF) to Seattle (SEA)

Getting some of the best deals on flights from Sofia to Seattle is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2 to 8 weeks in advance, although most travelers tend to book at least 2 months ahead. Morning departures, between 5 AM and 12 PM, not only offer lower prices but are also the most popular. Additionally, flying on Monday provides both affordable rates and popularity among travelers.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Seattle - Tacoma International Airport from Sofia Airport

Seattle welcomes travelers from Sofia with a range of transport options based on price, convenience, and proximity. Seattle city center is approximately a 20-minute drive (covering about 14 miles) from Seattle - Tacoma International Airport, depending on traffic. Here's how to reach Seattle efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Seattle, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Seattle - Tacoma International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Seattle - Tacoma International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Seattle - Tacoma International Airport, SeaTac/Airport Station, a metro station, is located about 0.3 miles from the airport and easily accessible on foot, while Tukwila Station, a train station, is about 4.3 miles away and typically reached by car.

Frequently asked questions

How much does a flight from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from $562 and cheap return flights from $935 Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) with Expedia. One-way flights typically cost between $927 and $3716, and return flights often range between $941 and $4772. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
February is generally the cheapest month to fly from Sofia (SOF) to Seattle, WA (SEA), with average return fares around $840. This price is about 10% lower than the average fare for the year, as travel demand tends to be lower during the winter months. Other budget-friendly months to consider are March and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Enter SOF to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
KLM is one of the cheapest airlines offering connecting flights from Sofia (SOF) to Seattle, WA (SEA), with round-trip tickets starting from around $948 with a layover in Schiphol (AMS). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The ideal months to fly from Sofia (SOF) to Seattle (SEA) are February and April, with average return flight prices around $840. February is a great choice for budget travelers, while April offers milder weather, making it a pleasant time to explore Seattle.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Sofia (SOF) to Seattle-Tacoma International Airport (SEA) typically departs at around 1:10 AM, operated by flydubai and Emirates. An early start like this allows you to maximize your time in Seattle. This service is seasonal, so be sure to check if it's available during your travel dates. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. This time accounts for around 67% of total traffic, making it a great choice for early travelers. Airlines like Lufthansa and United Airlines operate flights during this window.
How long does it take to fly from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying from SOF to SEA with a connection usually takes about 14 hours 50 minutes, traveling roughly 5,867 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You can fly business class between SOF and SEA. Airlines that offer business class service on this route include:

  • Lufthansa
  • British Airways
  • Bulgaria Air
  • Austrian Airlines
  • Turkish Airlines
  • Swiss International Air Lines
  • Tarom
  • flydubai
  • Qatar Airways
  • Helvetic Airways

How do I earn miles on a Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from SOF (SOF)?
If you're planning to travel to Seattle from SOF (SOF), you can fly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Frankfurt Intl. (FRA), Franz Josef Strauss Intl. (MUC), Vienna Intl. (VIE) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) Seattle Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Sofia (SOF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sofia
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air France, Austrian Airlines, British Airways, Iberia, Lufthansa, Swiss International Air Lines, Tarom-Romanian Air Transport, Turkish Airlines, United
Roundtrip price
$934
Distance
5866 mi

Book with confidence

Sofia to Seattle Flights

The cheapest times to fly from Sofia to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sofia to Seattle are during the month of October. You can find some of the cheapest flights from Sofia to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sofia to Seattle

Sunday is one of the best days to book for cheap flights from Sofia to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sofia to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sofia to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $562 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sofia to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sofia to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Sofia to Seattle Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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