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Sofia

$302+ Cheap flights from Washington to Sofia (SOF)

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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
1 adult, Economy
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Cheap flight deals from Washington to Sofia

Keep the following information in mind while searching for Washington to Sofia flight deals. Data was last updated octubre 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$494
(Flightnetwork)

One-way from

$302
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$644
Provider with most accurate pricing for Seattle/Tacoma Intl-Sofia flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sofia flights.
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From Washington to Sofia
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One-way flight from Washington to Sofia
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Highest demand for flights based on searches. 3% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Washington to Sofia

Cheapest flights from Washington to Sofia
Explore the most affordable flight options available from Washington to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 16, 2025.

This Ticket deal was found by Cheapflights users on 10/16. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/303:10 pmSEA - SOF
1 stop21h 35mLufthansa
dom. 12/76:05 amSOF - SEA
1 stop17h 15mLufthansa
Deal found 10/16$448
This Ticket deal was found by Cheapflights users on 10/16. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/305:45 amSEA - SOF
2 stops26h 35mAir Canada
dom. 12/76:10 amSOF - SEA
2 stops23h 06mAir Canada
Deal found 10/16$452
This Mytrip deal was found by Cheapflights users on 10/16. 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.
jue. 11/133:15 pmPDX - SOF
2 stops41h 05mMultiple Airlines
jue. 11/207:05 pmSOF - PDX
2 stops33h 25mMultiple Airlines
Deal found 10/16$509
This KAYAK deal was found by Cheapflights users on 10/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:50 pmSEA - SOF
1 stop30h 25mBritish Airways
mié. 11/269:00 pmSOF - SEA
1 stop29h 55mBritish Airways
Deal found 10/15$518
This FlightHub deal was found by Cheapflights users on 10/15. 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.
vie. 11/143:10 pmSEA - SOF
1 stop17h 10mLufthansa
jue. 11/276:00 amSOF - SEA
2 stops23h 16mLufthansa
Deal found 10/15$520
This United Airlines deal was found by Cheapflights users on 10/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/123:10 pmSEA - SOF
1 stop21h 35mUnited Airlines
lun. 11/246:10 amSOF - SEA
1 stop16h 00mUnited Airlines
Deal found 10/15$527
This Air France deal was found by Cheapflights users on 10/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:40 pmSEA - SOF
1 stop14h 15mMultiple Airlines
jue. 11/277:00 amSOF - SEA
1 stop14h 45mMultiple Airlines
Deal found 10/15$529
This United Airlines deal was found by Cheapflights users on 10/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/166:00 amSEA - SOF
2 stops21h 00mUnited Airlines
lun. 11/246:10 amSOF - SEA
1 stop16h 00mUnited Airlines
Deal found 10/15$532
This Air Canada deal was found by Cheapflights users on 10/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/133:40 pmSEA - SOF
2 stops40h 40mAir Canada
jue. 11/272:35 pmSOF - SEA
2 stops41h 41mAir Canada
Deal found 10/15$534
This Booking.com deal was found by Cheapflights users on 10/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/107:00 pmPDX - SOF
2 stops37h 20mMultiple Airlines
lun. 11/171:45 pmSOF - PDX
2 stops38h 45mMultiple Airlines
Deal found 10/15$589
This KLM deal was found by Cheapflights users on 10/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/101:25 pmPDX - SOF
1 stop14h 40mKLM
lun. 11/177:00 amSOF - PDX
1 stop14h 25mKLM
Deal found 10/15$634

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Sofia 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 octubre 16, 2025.
Use the filters below to find and compare flights from Washington to Sofia that are best for you.

Fly from

Washington

Fly to

Sofia

Route

Depart

Return

Price

PortlandSofia

PDX - SOF

PDXSOF

Portland

jue. 11/13

3:15 pm-6:20 pm

2 stops41h 05m

Sofia

jue. 11/20

7:05 pm-6:30 pm

2 stops33h 25m

$509

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mié. 11/12

3:10 pm-10:45 pm

1 stop21h 35m

Sofia

lun. 11/24

6:10 am-12:10 pm

1 stop16h 00m

$527

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mié. 11/12

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

mié. 11/26

6:05 am-12:59 am

3 stops28h 54m

$536

PortlandSofia

PDX - SOF

PDXSOF

Portland

mar. 1/6

1:24 pm-10:45 pm

3 stops47h 21m

Sofia

mar. 1/13

6:00 am-10:32 pm

2 stops26h 32m

$567

SpokaneSofia

GEG - SOF

GEGSOF

Spokane

mié. 3/11

12:30 pm-10:45 pm

2 stops25h 15m

Sofia

mié. 3/25

6:10 am-9:09 pm

2 stops23h 59m

$587

PortlandSofia

PDX - SOF

PDXSOF

Portland

lun. 11/10

7:00 pm-6:20 pm

2 stops37h 20m

Sofia

lun. 11/17

1:45 pm-6:30 pm

2 stops38h 45m

$589

SpokaneSofia

GEG - SOF

GEGSOF

Spokane

mié. 3/11

10:15 am-2:05 pm

2 stops18h 50m

Sofia

mié. 3/25

7:00 am-9:03 pm

2 stops23h 03m

$593

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mar. 11/11

10:53 am-1:15 pm

2 stops16h 22m

Sofia

mar. 11/25

6:05 am-6:52 pm

2 stops22h 47m

$594

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

lun. 3/9

8:00 pm-6:20 pm

2 stops37h 20m

Sofia

lun. 4/27

1:50 pm-11:55 am

1 stop32h 05m

$600

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

sáb. 11/29

12:59 am-4:20 pm

2 stops29h 21m

Sofia

dom. 12/7

2:30 pm-4:55 pm

1 stop36h 25m

$620

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 19 results
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Best time to book a flight from Washington to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Washington 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 Washington to Sofia

What is the cheapest month to book a flight from State of Washington to Sofia?

Currently, October is the cheapest month in which you can book a flight from State of Washington to Sofia (average of $553). Flying from State of Washington to Sofia in June is currently the most expensive (average of $943). 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 WA to SOF?

Find hourly flight availability from Washington to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 16, 2025.

It’s optimal to fly from State of Washington to Sofia in the afternoon. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from State of Washington to Sofia?

Use this chart to determine the cheapest time to fly round-trip from Washington to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Sofia flight should consider departing on Tuesday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Washington to Sofia. 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 into for flights to Sofia from Washington?

    Located just 4.2 mi from the city center, Sofia (SOF) is the airport most travelers will use when flying to Sofia from Washington.

  • How long is the flight from State of Washington to Sofia?

    There are many flights that can get you from State of Washington to Sofia in 21h 35m. Fly via United Airlines or Lufthansa to get the fastest option. There are 5862 mi between State of Washington and Sofia. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from State of Washington to Sofia?

    When deciding which route to take from State of Washington to Sofia consider Seattle/Tacoma Intl - Sofia, Portland - Sofia or Spokane - Sofia as they are the most popular.

  • Can I find deals for flights from Washington to Sofia that include hotel bookings?

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

  • How can I find direct flights from Washington to Sofia?

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

  • Can I find deals for business class flights from Washington to Sofia?

    Yes. Cheapflights offers flight deals from Washington to Sofia 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 State of Washington to Sofia?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Sofia (average of $553). Flying from State of Washington to Sofia in June is currently the most expensive (average of $943). 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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Alternative routes for Washington to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Washington to Sofia

Discover the top 5 airlines that operate flights from Washington to Sofia. 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 octubre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$599Average$876FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$645Average$899FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$653Average$885FlexibilityNo cancel feeOn-time69%
KLMCheapest$667Average$989FlexibilityNo cancel feeOn-time75%

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