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$294+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
abr. 7 — abr. 141
lun. 4/7
lun. 4/14
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 abril 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$719
(KLM)

One-way from

$294
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$739
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. 1% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 2, 2025.

This Justfly.com deal was found by Cheapflights users on 4/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/137:40 pmPDX - SOF
2 stops37h 00mAir Canada
mar. 10/216:20 amSOF - PDX
2 stops22h 26mAir Canada
Deal found 4/1$645
This KLM deal was found by Cheapflights users on 4/1. 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. 10/131:15 pmPDX - SOF
1 stop14h 45mKLM
mar. 10/217:00 amSOF - PDX
2 stops20h 07mKLM
Deal found 4/1$669
This KLM deal was found by Cheapflights users on 4/1. 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.
mié. 4/306:10 pmSEA - SOF
1 stop33h 50mKLM
mar. 5/207:00 amSOF - SEA
1 stop14h 40mKLM
Deal found 4/1$719
This Air Canada deal was found by Cheapflights users on 4/1. 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.
lun. 10/137:40 pmPDX - SOF
2 stops37h 00mMultiple Airlines
mar. 10/216:00 amSOF - PDX
3 stops22h 46mMultiple Airlines
Deal found 4/1$766
This Gotogate deal was found by Cheapflights users on 4/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/45:30 amSEA - SOF
2 stops27h 10mMultiple Airlines
mié. 5/2110:50 amSOF - SEA
2 stops17h 43mMultiple Airlines
Deal found 4/2$783
This Air Canada deal was found by Cheapflights users on 4/2. 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.
mar. 5/207:20 amSEA - SOF
2 stops25h 20mAir Canada
mar. 6/106:20 amSOF - SEA
2 stops24h 17mAir Canada
Deal found 4/2$805
This United Airlines deal was found by Cheapflights users on 4/2. 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. 5/48:50 amSEA - SOF
3 stops28h 10mUnited Airlines
mié. 5/216:15 amSOF - SEA
2 stops23h 22mUnited Airlines
Deal found 4/2$810
This United Airlines deal was found by Cheapflights users on 4/1. 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.
vie. 5/25:00 amPDX - SOF
2 stops27h 40mUnited Airlines
jue. 5/812:45 pmSOF - PDX
2 stops20h 08mUnited Airlines
Deal found 4/1$841
This Travelocity deal was found by Cheapflights users on 3/31. 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.
vie. 9/53:13 pmSEA - SOF
2 stops43h 07mBritish Airways
dom. 10/59:10 pmSOF - SEA
1 stop24h 25mBritish Airways
Deal found 3/31$841
This Gurufare deal was found by Cheapflights users on 4/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/272:15 pmSEA - SOF
1 stop22h 35mLufthansa
dom. 6/16:00 amSOF - SEA
1 stop20h 59mLufthansa
Deal found 4/1$932
This Air France deal was found by Cheapflights users on 4/1. 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.
mar. 7/11:30 pmSEA - SOF
1 stop14h 30mAir France
lun. 8/47:00 amSOF - SEA
1 stop20h 35mAir France
Deal found 4/1$980
This oojo deal was found by Cheapflights users on 4/1. 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.
jue. 6/197:10 pmSEA - SOF
1 stop15h 15mTurkish Airlines
mar. 11/119:40 pmSOF - SEA
1 stop29h 25mTurkish Airlines
Deal found 4/1$1,007

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 abril 2, 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

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mié. 4/30

6:10 pm-2:00 pm

1 stop33h 50m

Sofia

mar. 5/20

7:00 am-11:40 am

1 stop14h 40m

$719

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

dom. 5/4

5:30 am-6:40 pm

2 stops27h 10m

Sofia

mié. 5/21

10:50 am-6:33 pm

2 stops17h 43m

$783

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mar. 5/20

7:20 am-6:40 pm

2 stops25h 20m

Sofia

mar. 6/10

6:20 am-8:37 pm

2 stops24h 17m

$805

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

dom. 5/4

8:50 am-11:00 pm

3 stops28h 10m

Sofia

mié. 5/21

6:15 am-7:37 pm

2 stops23h 22m

$810

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

vie. 9/5

3:13 pm-8:20 pm

2 stops43h 07m

Sofia

dom. 10/5

9:10 pm-11:35 am

1 stop24h 25m

$841

PortlandSofia

PDX - SOF

PDXSOF

Portland

vie. 5/2

5:00 am-6:40 pm

2 stops27h 40m

Sofia

jue. 5/8

12:45 pm-10:53 pm

2 stops20h 08m

$841

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mar. 5/27

2:15 pm-10:50 pm

1 stop22h 35m

Sofia

dom. 6/1

6:00 am-4:59 pm

1 stop20h 59m

$932

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

mar. 7/1

1:30 pm-2:00 pm

1 stop14h 30m

Sofia

lun. 8/4

7:00 am-5:35 pm

1 stop20h 35m

$980

PortlandSofia

PDX - SOF

PDXSOF

Portland

vie. 5/2

3:20 pm-12:50 am

3 stops23h 30m

Sofia

jue. 5/8

7:00 am-12:52 pm

2 stops39h 52m

$991

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

jue. 6/19

7:10 pm-8:25 pm

1 stop15h 15m

Sofia

mar. 11/11

9:40 pm-5:05 pm

1 stop29h 25m

$1,007

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 22 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, 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 abril 2, 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 abril 2, 2025.
Read through reviews of airlines operating flights from Washington to Sofia, such as KLM, Air France and United Airlines. 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
1,323 reviews

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,323 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,427 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,616 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Turkish Airlines
7.3
Good
3,748 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,323 reviews

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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?

    $558 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Air France and Air Canada, with prices starting from $571 and $574, 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

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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 abril 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$563Average$1,127FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$584Average$1,149FlexibilityNo cancel feeOn-time70%
KLMCheapest$609Average$936FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$700Average$1,019FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$717Average$1,192FlexibilityNo cancel feeOn-time76%

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