$238 Flights from Seattle / Tacoma International (SEA) to Sofia (SOF)

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Flight deals from Seattle / Tacoma International Airport to Sofia Airport

Looking for a cheap last-minute deal or the best round-trip flight from Seattle / Tacoma International Airport to Sofia Airport? If you want to travel next month, round-trip fares start from $605. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Seattle / Tacoma International to Sofia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Sofia flights are currently cheapest in April.

Seattle / Tacoma International to Sofia: Alternative routes

Compare routes from Seattle / Tacoma International to Sofia below. You may find an airport to fly into that's cheaper, faster, or easier than Sofia.

Seattle to Sofia: Flight information

The things to know before you go.
Cheapest flight found$238
Cheapest month to flyApril

Finding cheap flights from Seattle / Tacoma International to Sofia: Frequently asked questions

The best price we found for a round-trip flight from Seattle / Tacoma International to Sofia is $597. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Sofia. But we found flights with one or more stops from $597.
There are no flights flying from Seattle / Tacoma International to Sofia, as of March 2026.
The cheapest month to fly from Seattle / Tacoma International to Sofia is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Sofia Airport on Sunday, May 10, 2026.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Sofia Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sofia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Sofia is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Turkish Airlines offers the cheapest flight tickets to Sofia.

Traveling from Seattle-Tacoma International Airport (SEA) to Sofia Airport (SOF): what you need to know

  • The timezone in Sofia is UTC+2, which is nine hours ahead of Seattle.

  • To ensure you get on your SEA to SOF flight, leave enough time to check in and drop off your luggage. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.

  • During popular months like July, it's best to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're flying during peak periods in general.

  • Think about adding a stopover when booking your ticket from Seattle-Tacoma International Airport to Sofia Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps see a new city along the way. Here are some options between SEA and SOF:

    • London Heathrow Airport

    • Charles de Gaulle Airport

    • Amsterdam Airport Schiphol

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Sofia Airport (SOF)

  • The lowest price we've found for a one-way Seattle-Tacoma International Airport to Sofia Airport flight is $238. A round-trip fare right now is $597. Depending on the availability when you book, these fares can change.

  • It's usually best to book early if you're looking for cheap tickets from SEA to SOF. That's because flight prices are based on demand, which tends to increase closer to the date of departure.

  • The 'Whole month' search tool shows you the cheapest flights from Seattle-Tacoma International Airport to Sofia Airport across every month. It's an easy way to snap up a bargain if your travel dates are flexible.

  • Cut down on the time spent looking for cheap flights from SEA to SOF by creating a Price Alert. You'll receive an email or push notification on the app when fares go down.

  • Choose your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Seattle-Tacoma International Airport to Sofia Airport.

Handy information about Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport has an excellent on-time record, so you're less likely to experience disruptions. Departures from SEA touch down on schedule 81.27% of the time.

  • To get to Seattle-Tacoma International Airport from central Seattle, it'll take about 20 minutes if you're traveling by car. This depends on traffic, however. It's approximately 14 miles from the airport to the city center.

  • The journey when using public transport typically takes 55 minutes.

  • Need a convenient hotel close to SEA? If you're boarding an early flight from Seattle-Tacoma International Airport to Sofia Airport, these accommodation options will have you moments from check-in:

Arriving at Sofia Airport (SOF)

  • The last thing you want is a lengthy trip to your hotel if you're landing late on a Seattle-Tacoma International Airport to Sofia Airport flight. Check in to one of these accommodation options near SOF instead:

  • Say yes to new adventures by picking up a Sofia Airport rental car. Grab your wheels from MEX, Surprice or NU Car Rentals and explore beyond Sofia's usual tourist stops.

  • Lock in the lowest price by reserving your ride from Sofia Airport about one week before your trip.

Getting from Sofia Airport (SOF) to central Sofia

  • Sofia Airport to the center of Sofia has a drive time of around 15 minutes. It's approximately 7 miles away.

  • If you're taking public transport, expect a journey time of around 35 minutes.

When to fly to Sofia Airport (SOF)

  • The quietest month for a flight from Seattle-Tacoma International Airport to Sofia Airport is April, while August is the most popular. Pick the best time to visit Sofia based on whether you prefer a more fast-paced or easygoing experience.

  • The warmest month in Sofia is August, with the temperature ranging between 57ºF and 86ºF. Lock in your flights from Seattle-Tacoma International Airport to Sofia Airport in this month if this is the type of weather you enjoy.

  • January has average temperatures of between 12ºF and 45ºF. Look for cheap tickets from SEA to SOF around that time if you like traveling in cooler conditions.

Explore more of Bulgaria

  • Sofia has plenty going for it, but there are so many other parts of Bulgaria waiting to be discovered. About 80 miles south-east of Sofia, a visit to Plovdiv will fill your itinerary to the brim. Check out popular attractions like Plovdiv Old Town, Plovdiv Roman Theatre and Archaelogical Complex Nebet Tepe.

  • Varna is another well-known destination in Bulgaria and is around 240 miles east of Sofia. No journey is complete without a visit to Park Asparuhovo - Asparuhovo sea garden, Dormition of theotokos Cathedral and Sunset viewpoint (място за гледане на Залеза).

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.