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$468+ Cheap flights from Portland (PDX) 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SOF
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$631
(Air Canada)

One-way from

$468
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$806
From Portland to Sofia
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One-way flight from Portland to Sofia
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Highest demand for flights based on searches. 18% potential increase in price ($236 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 11, 2025.

This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/296:15 amPDX - SOF
2 stops20h 45mAir Canada
lun. 11/101:55 pmSOF - PDX
2 stops38h 35mAir Canada
Deal found 9/11$631
This Air France deal was found by Cheapflights users on 9/11. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/297:15 amPDX - SOF
2 stops20h 45mMultiple Airlines
lun. 11/107:00 amSOF - PDX
1 stop14h 25mMultiple Airlines
Deal found 9/11$689
This Turkish Airlines deal was found by Cheapflights users on 9/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/62:30 pmPDX - SOF
2 stops20h 20mMultiple Airlines
jue. 12/1110:05 amSOF - PDX
2 stops20h 45mMultiple Airlines
Deal found 9/11$955
This SmartFares deal was found by Cheapflights users on 9/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/810:30 amPDX - SOF
2 stops36h 05mMultiple Airlines
sáb. 10/119:15 pmSOF - PDX
2 stops33h 34mMultiple Airlines
Deal found 9/11$1,028
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/69:50 amPDX - SOF
3 stops22h 25mAir Canada
jue. 12/116:00 amSOF - PDX
3 stops37h 15mAir Canada
Deal found 9/11$1,334
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/291:15 pmPDX - SOF
1 stop14h 45mKLM
lun. 11/107:00 amSOF - PDX
1 stop14h 25mKLM
Deal found 9/11$1,450
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/89:55 amPDX - SOF
3 stops21h 55mAir Canada
sáb. 10/116:15 amSOF - PDX
2 stops26h 46mAir Canada
Deal found 9/11$1,560
This SWISS deal was found by Cheapflights users on 9/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/810:46 amPDX - SOF
3 stops39h 14mSWISS
sáb. 10/1112:45 pmSOF - PDX
3 stops43h 40mSWISS
Deal found 9/11$1,713
This Orbitz deal was found by Cheapflights users on 9/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/208:35 amPDX - SOF
2 stops17h 55mMultiple Airlines
vie. 10/246:15 amSOF - PDX
2 stops27h 09mMultiple Airlines
Deal found 9/10$2,193

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 septiembre 11, 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

lun. 9/29

6:15 am-1:00 pm

2 stops20h 45m

Sofia

lun. 11/10

1:55 pm-6:30 pm

2 stops38h 35m

$631

PortlandSofia

PDX - SOF

PDXSOF

Portland

lun. 9/29

7:15 am-2:00 pm

2 stops20h 45m

Sofia

lun. 11/10

7:00 am-11:25 am

1 stop14h 25m

$689

PortlandSofia

PDX - SOF

PDXSOF

Portland

sáb. 12/6

2:30 pm-8:50 pm

2 stops20h 20m

Sofia

jue. 12/11

10:05 am-8:50 pm

2 stops20h 45m

$955

PortlandSofia

PDX - SOF

PDXSOF

Portland

mié. 10/8

10:30 am-8:35 am

2 stops36h 05m

Sofia

sáb. 10/11

9:15 pm-8:49 pm

2 stops33h 34m

$1,028

PortlandSofia

PDX - SOF

PDXSOF

Portland

sáb. 12/6

9:50 am-6:15 pm

3 stops22h 25m

Sofia

jue. 12/11

6:00 am-9:15 am

3 stops37h 15m

$1,334

PortlandSofia

PDX - SOF

PDXSOF

Portland

lun. 9/29

1:15 pm-2:00 pm

1 stop14h 45m

Sofia

lun. 11/10

7:00 am-11:25 am

1 stop14h 25m

$1,450

PortlandSofia

PDX - SOF

PDXSOF

Portland

mié. 10/8

9:55 am-5:50 pm

3 stops21h 55m

Sofia

sáb. 10/11

6:15 am-11:01 pm

2 stops26h 46m

$1,560

PortlandSofia

PDX - SOF

PDXSOF

Portland

mié. 10/8

10:46 am-12:00 pm

3 stops39h 14m

Sofia

sáb. 10/11

12:45 pm-10:25 pm

3 stops43h 40m

$1,713

PortlandSofia

PDX - SOF

PDXSOF

Portland

lun. 10/20

8:35 am-12:30 pm

2 stops17h 55m

Sofia

vie. 10/24

6:15 am-11:24 pm

2 stops27h 09m

$2,193

PortlandSofia

PDX - SOF

PDXSOF

Portland

mié. 9/24

10:30 am-11:35 pm

3 stops27h 05m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 11 results
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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 $1,185). 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 septiembre 11, 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.

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 septiembre 11, 2025.
Read reviews from past customers who have flown KLM, United Airlines, and Air Canada from Portland to Sofia. 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
1,385 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
United Airlines
7.4
Good
8,937 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Air Canada
7.1
Good
10,000 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Lufthansa
6.8
Okay
7,409 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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.

  • How long is the flight from Portland to Sofia?

    Air Canada can get you from Portland to Sofia in just under 20h 45m. Your travel time can differ by up to . Airlines will cover a distance of 5985 mi.

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

    Cheapflights users have booked flights from Portland to Sofia round-trip from $635. Other airlines that can offer you cheap pricing are United Airlines, from $639, and Air Canada, from $678. Lufthansa is priced at 37% 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 $1,185). 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$635Average$969FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$639Average$994FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$678Average$1,037FlexibilityNo cancel feeOn-time67%
KLMCheapest$692Average$923FlexibilityNo cancel feeOn-time75%

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