HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sofia

$414+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Sofia with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$584
(oojo)

One-way from

$414
(Mytrip)

Popular in

December

Cheapest in

November

Average price

$825
Provider with most accurate pricing for Seattle/Tacoma Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sofia flights.
Search Deals
From Washington to Sofia
Search Deals
One-way flight from Washington to Sofia
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 febrero 20, 2025.

This oojo deal was found by Cheapflights users on 2/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/237:10 pmSEA - SOF
1 stop15h 15mTurkish Airlines
mié. 5/73:35 pmSOF - SEA
1 stop35h 40mTurkish Airlines
Deal found 2/19$584
This Travelocity deal was found by Cheapflights users on 2/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/107:50 pmSEA - SOF
1 stop33h 20mBritish Airways
lun. 3/175:25 pmSOF - SEA
1 stop27h 55mBritish Airways
Deal found 2/19$619
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/94:10 pmSEA - SOF
1 stop17h 00mLufthansa
mié. 4/96:00 amSOF - SEA
1 stop20h 59mLufthansa
Deal found 2/18$623
This United Airlines deal was found by Cheapflights users on 2/18. 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. 3/94:10 pmSEA - SOF
1 stop21h 35mUnited Airlines
mié. 4/92:05 pmSOF - SEA
2 stops41h 21mUnited Airlines
Deal found 2/18$626
This Air France deal was found by Cheapflights users on 2/19. 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.
lun. 3/101:35 pmSEA - SOF
1 stop15h 30mMultiple Airlines
mar. 4/87:00 amSOF - SEA
1 stop19h 00mMultiple Airlines
Deal found 2/19$628
This KLM deal was found by Cheapflights users on 2/19. 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. 3/108:15 amSEA - SOF
2 stops20h 50mKLM
mar. 4/87:00 amSOF - SEA
1 stop19h 00mKLM
Deal found 2/19$631
This Austrian Airlines deal was found by Cheapflights users on 2/19. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/118:10 amSEA - SOF
2 stops18h 40mAustrian Airlines
lun. 4/74:05 pmSOF - SEA
2 stops38h 16mAustrian Airlines
Deal found 2/19$751
This CheapOair deal was found by Cheapflights users on 2/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/77:05 pmPDX - SOF
2 stops37h 35mMultiple Airlines
lun. 4/146:40 pmSOF - PDX
2 stops39h 50mMultiple Airlines
Deal found 2/20$843
This KLM deal was found by Cheapflights users on 2/20. 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. 4/71:15 pmPDX - SOF
1 stop14h 45mKLM
lun. 4/147:00 amSOF - PDX
1 stop14h 20mKLM
Deal found 2/20$876
This Air Canada deal was found by Cheapflights users on 2/19. 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.
dom. 5/410:00 amSEA - SOF
2 stops17h 05mAir Canada
mar. 6/36:20 amSOF - SEA
2 stops41h 53mAir Canada
Deal found 2/19$970
This SWISS deal was found by Cheapflights users on 2/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/61:02 pmSEA - SOF
2 stops35h 03mSWISS
jue. 6/510:50 amSOF - SEA
2 stops17h 43mSWISS
Deal found 2/19$1,033
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/2010:10 amPDX - SOF
2 stops17h 10mUnited Airlines
mar. 6/106:20 amSOF - PDX
3 stops42h 26mUnited Airlines
Deal found 2/19$1,157

Find flights from Washington to Sofia within your budget

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 febrero 20, 2025.

Fly from

Washington

Fly to

Sofia

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mié. 4/23

7:10 pm-8:25 pm

1 stop15h 15m

Sofia

mié. 5/7

3:35 pm-5:15 pm

1 stop35h 40m

$584

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

lun. 3/10

7:50 pm-2:10 pm

1 stop33h 20m

Sofia

lun. 3/17

5:25 pm-12:20 pm

1 stop27h 55m

$619

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

dom. 3/9

4:10 pm-6:10 pm

1 stop17h 00m

Sofia

mié. 4/9

6:00 am-4:59 pm

1 stop20h 59m

$623

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

dom. 3/9

4:10 pm-10:45 pm

1 stop21h 35m

Sofia

mié. 4/9

2:05 pm-9:26 pm

2 stops41h 21m

$626

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

lun. 3/10

1:35 pm-2:05 pm

1 stop15h 30m

Sofia

mar. 4/8

7:00 am-4:00 pm

1 stop19h 00m

$628

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

lun. 3/10

7:15 am-2:05 pm

2 stops21h 50m

Sofia

mié. 4/9

7:00 am-4:00 pm

1 stop19h 00m

$631

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

jue. 3/13

8:10 am-6:00 pm

2 stops24h 50m

Sofia

mar. 4/8

8:00 am-8:21 pm

2 stops22h 21m

$701

PortlandSofia

PDX - SOF

PDXSOF

Portland

lun. 4/7

7:05 pm-6:40 pm

2 stops37h 35m

Sofia

lun. 4/14

6:40 pm-12:30 am

2 stops39h 50m

$843

PortlandSofia

PDX - SOF

PDXSOF

Portland

lun. 4/7

1:15 pm-2:00 pm

1 stop14h 45m

Sofia

lun. 4/14

7:00 am-11:20 am

1 stop14h 20m

$876

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

dom. 5/4

10:00 am-1:05 pm

2 stops17h 05m

Sofia

mar. 6/3

6:20 am-2:13 pm

2 stops41h 53m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 24 results
1
2
3

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.

Travel insights for flights from Washington to Sofia

Get recent, data-driven insights about flights from Washington to Sofia including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from State of Washington to Sofia (average of $632). Flying from State of Washington to Sofia in June is currently the most expensive (average of $1,243). 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 febrero 20, 2025.

When flying from State of Washington to Sofia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Sofia by month

Plan your trip to Sofia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

Plan your trip to Sofia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sofia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sofia. Reviews last updated febrero 20, 2025.
Read through reviews of airlines operating flights from Washington to Sofia, such as KLM, Austrian Airlines and SWISS. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Austrian Airlines
7.6
Good
773 reviews
KLM
7.8
Good
1,333 reviews

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,568 reviews
KLM
7.8
Good
1,333 reviews

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,765 reviews
KLM
7.8
Good
1,333 reviews

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Turkish Airlines
7.3
Good
3,832 reviews
KLM
7.8
Good
1,333 reviews

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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.

  • What are the cheapest airlines to fly from State of Washington to Sofia one-way?

    $561 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Lufthansa and KLM, with prices starting from $578 and $625, respectively.

  • 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, November is the cheapest month in which you can book a flight from State of Washington to Sofia (average of $632). Flying from State of Washington to Sofia in June is currently the most expensive (average of $1,243). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Sofia flights
John F Kennedy Intl to Sofia flights
Newark to Sofia flights
LaGuardia to Sofia flights
Boston to Sofia flights
Los Angeles to Sofia flights
Atlanta to Sofia flights
San Francisco to Sofia flights
Minneapolis to Sofia flights
Midway to Sofia flights
Dulles Intl to Sofia flights
Miami to Sofia flights
Dallas/Fort Worth to Sofia flights
Reagan-National to Sofia flights
Love Field to Sofia flights
Seattle to Sofia flights
Hobby to Sofia flights
Baltimore to Sofia flights
Detroit to Sofia flights
Pittsburgh to Sofia flights
Denver to Sofia flights
George Bush Intcntl to Sofia flights
Las Vegas to Sofia flights
San Jose to Sofia flights
Charlotte to Sofia flights
Sky Harbor Intl to Sofia flights
Portland to Sofia flights
Raleigh to Sofia flights
Tampa to Sofia flights
Philadelphia to Sofia flights
St. Louis to Sofia flights
San Diego to Sofia flights
Stewart to Sofia flights
Nashville to Sofia flights
Fort Lauderdale to Sofia flights
Cincinnati to Sofia flights
West Palm Beach to Sofia flights
Jacksonville to Sofia flights
Orlando to Sofia flights
Indianapolis to Sofia flights
Providence to Sofia flights
Buffalo to Sofia flights
Austin to Sofia flights
Santa Ana to Sofia flights
Tucson to Sofia flights
Lexington to Sofia flights
Kansas City to Sofia flights
Cleveland to Sofia flights
Missoula to Sofia flights
Salt Lake City to Sofia flights

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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$563Average$1,009FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$563Average$1,089FlexibilityNo cancel feeOn-time69%
KLMCheapest$609Average$936FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$688Average$1,168FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$758Average$1,004FlexibilityNo cancel feeOn-time77%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.