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$599+ Cheap flights from Portland (PDX) to Sofia (SOF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SOF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Portland to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$599
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$1,330
From Portland to Sofia
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Highest demand for flights based on searches. 2% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Portland to Sofia

Cheapest flights from Portland to Sofia
Explore the most affordable flight options available from Portland to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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.
Sat 11/87:05 pmPDX - SOF
2 stops37h 15mAir Canada
Wed 11/196:15 amSOF - PDX
2 stops37h 19mAir Canada
Deal found 6/10$599
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 11/87:00 amPDX - SOF
3 stops20h 10mUnited Airlines
Wed 11/196:15 amSOF - PDX
3 stops26h 41mUnited Airlines
Deal found 6/10$663
This Air France deal was found by Cheapflights users on 6/10. 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.
Sat 11/811:10 amPDX - SOF
2 stops16h 45mMultiple Airlines
Wed 11/197:00 amSOF - PDX
1 stop14h 25mMultiple Airlines
Deal found 6/10$682
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Fri 8/2210:55 amPDX - SOF
2 stops21h 45mLufthansa
Wed 9/36:15 amSOF - PDX
2 stops22h 14mLufthansa
Deal found 6/12$743
This KLM deal was found by Cheapflights users on 6/10. 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.
Tue 9/27:14 amPDX - SOF
2 stops20h 46mKLM
Sat 9/137:00 amSOF - PDX
1 stop14h 20mKLM
Deal found 6/10$802
This British Airways deal was found by Cheapflights users on 6/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/127:25 pmPDX - SOF
1 stop14h 55mBritish Airways
Mon 8/48:00 pmSOF - PDX
2 stops36h 06mBritish Airways
Deal found 6/11$1,271
This Turkish Airlines deal was found by Cheapflights users on 6/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:04 amPDX - SOF
2 stops21h 41mTurkish Airlines
Sat 8/23:35 pmSOF - PDX
2 stops39h 02mTurkish Airlines
Deal found 6/10$1,796
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/97:25 pmPDX - SOF
1 stop32h 05mAmerican Airlines
Mon 8/48:00 pmSOF - PDX
2 stops37h 04mAmerican Airlines
Deal found 6/11$2,032

Cheapflights Fare Finder

Customize your flight search to find flights from Portland 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 June 12, 2025.
Use the filters below to find and compare flights from Portland to Sofia that are best for you.

Fly from

Portland

Fly to

Sofia

Route

Depart

Return

Price

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 11/8

7:05 pm-6:20 pm

2 stops37h 15m

Sofia

Wed 11/19

6:15 am-9:34 am

2 stops37h 19m

$599

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 11/8

7:00 am-1:10 pm

3 stops20h 10m

Sofia

Wed 11/19

6:15 am-10:56 pm

3 stops26h 41m

$663

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 11/8

11:10 am-1:55 pm

2 stops16h 45m

Sofia

Wed 11/19

7:00 am-11:25 am

1 stop14h 25m

$682

PortlandSofia

PDX - SOF

PDXSOF

Portland

Fri 8/22

10:55 am-6:40 pm

2 stops21h 45m

Sofia

Wed 9/3

6:15 am-6:29 pm

2 stops22h 14m

$743

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 9/2

7:14 am-2:00 pm

2 stops20h 46m

Sofia

Sat 9/13

7:00 am-11:20 am

1 stop14h 20m

$802

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 7/12

7:25 pm-8:20 pm

1 stop14h 55m

Sofia

Mon 8/4

8:00 pm-10:06 pm

2 stops36h 06m

$1,271

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 7/30

7:04 am-2:45 pm

2 stops21h 41m

Sofia

Sat 8/2

3:35 pm-8:37 pm

2 stops39h 02m

$1,796

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 7/9

7:25 pm-1:30 pm

1 stop32h 05m

Sofia

Mon 8/4

8:00 pm-11:04 pm

2 stops37h 04m

$2,032

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Portland to Sofia

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

What is the cheapest month to book a flight from Portland to Sofia?

Currently, November is the cheapest month in which you can book a flight from Portland to Sofia (average of $632). Flying from Portland to Sofia in June is currently the most expensive (average of $1,203). 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 PDX to SOF?

Find hourly flight availability from Portland 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 June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland to Sofia at noon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Portland to Sofia?

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

Travelers seeking maximum savings on their Portland to Sofia flight should consider departing on Sunday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 June 12, 2025.
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
United Airlines
7.4
Good
8,790 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Turkish Airlines
7.3
Good
3,848 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Air Canada
7.1
Good
9,531 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

Find useful and relevant information for your journey from Portland to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Portland to Sofia round-trip?

    Cheapflights users have booked flights from Portland to Sofia round-trip from $599. Other airlines that can offer you cheap pricing are United Airlines, from $663, and Lufthansa, from $743. Air Canada is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland to Sofia?

    Currently, November is the cheapest month in which you can book a flight from Portland to Sofia (average of $632). Flying from Portland to Sofia in June is currently the most expensive (average of $1,203). 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

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Alternative routes for Portland to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Sofia flights

Top 4 airlines flying from Portland to Sofia

Discover the top 4 airlines that operate flights from Portland 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$564Average$1,198FlexibilityNo cancel feeOn-time69%
KLMCheapest$668Average$918FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$746Average$847FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$748Average$1,212FlexibilityNo cancel feeOn-time76%

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