$656+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SOF
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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 Portland to Sofia
Cheapest
Best
Last-minute
Cheapest flights from Portland to SofiaExplore 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 September 18, 2026.
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 September 18, 2026.
This Justfly.com deal was found by Cheapflights users on 9/17. 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.
Wed 11/42:34 pm -
2 stops17h 46m
Sun 11/86:00 am -
2 stops24h 46m
Deal found 9/17![Multiple Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 10/2411:59 pm -
2 stops37h 56m
Sun 11/16:00 am -
2 stops42h 37m
Deal found 9/15![United Airlines logo]()
$666
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:22 pm -
2 stops43h 58m
Sun 11/87:45 pm -
1 stop30h 05m
Deal found 9/16![British Airways logo]()
$706
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 pm -
1 stop14h 50m
Sun 11/17:45 pm -
2 stops36h 14m
Deal found 9/15![British Airways logo]()
$855
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Tue 9/159:00 am -
2 stops28h 15m
Tue 9/226:10 am -
2 stops24h 55m
Deal found 9/14![Lufthansa logo]()
$970
This SWISS deal was found by Cheapflights users on 9/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:43 am -
3 stops42h 32m
Sun 11/111:15 am -
3 stops43h 47m
Deal found 9/15![SWISS logo]()
$979
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:30 pm -
2 stops22h 25m
Sun 11/14:00 pm -
3 stops35h 00m
Deal found 9/15![Multiple Airlines logo]()
$1,012
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Sun 10/1110:10 am -
3 stops28h 00m
Wed 10/1411:35 pm -
3 stops29h 36m
Deal found 9/14![Multiple Airlines logo]()
$1,087
Best flights from Portland to SofiaDiscover carefully curated flight deals from Portland to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Portland to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Justfly.com deal was found by Cheapflights users on 9/17. 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.
Wed 11/42:34 pm -
2 stops17h 46m
Sun 11/86:00 am -
2 stops24h 46m
Deal found 9/17![Multiple Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 10/2411:59 pm -
2 stops37h 56m
Sun 11/16:00 am -
2 stops42h 37m
Deal found 9/15![United Airlines logo]()
$666
This KAYAK deal was found by Cheapflights users on 9/13. 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.
Wed 1/137:01 am -
2 stops20h 24m
Tue 2/26:25 am -
2 stops22h 14m
Deal found 9/13![Lufthansa logo]()
$676
This Justfly.com deal was found by Cheapflights users on 9/17. 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.
Wed 11/41:22 pm -
2 stops43h 58m
Sun 11/87:45 pm -
1 stop30h 05m
Deal found 9/17![British Airways logo]()
$706
This United Airlines deal was found by Cheapflights users on 9/13. 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 1/94:05 pm -
3 stops44h 50m
Sat 1/306:00 am -
2 stops37h 40m
Deal found 9/13![United Airlines logo]()
$709
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 1/153:30 pm -
2 stops45h 25m
Sat 1/302:10 pm -
2 stops32h 16m
Deal found 9/13![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Thu 1/142:35 pm -
2 stops22h 20m
Sun 1/316:25 am -
2 stops26h 53m
Deal found 9/13![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Tue 1/127:01 am -
3 stops20h 14m
Sat 1/306:25 am -
2 stops22h 14m
Deal found 9/13![United Airlines logo]()
$727
Last-minute flights from Portland to SofiaDiscover last-minute flight deals from Portland to Sofia. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sofia. Data last updated September 18, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 9/17. 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.
Sun 9/208:15 am -
2 stops17h 55m
Tue 9/226:10 am -
2 stops26h 42m
Deal found 9/17![Lufthansa logo]()
$1,436
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Sun 9/2010:10 am -
3 stops22h 45m
Tue 9/226:10 am -
2 stops37h 21m
Deal found 9/17![Multiple Airlines logo]()
$1,699
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Sun 10/1110:10 am -
3 stops28h 00m
Wed 10/1411:35 pm -
3 stops29h 36m
Deal found 9/14![Multiple Airlines logo]()
$1,087
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Sun 10/111:12 pm -
2 stops20h 08m
Wed 10/149:25 pm -
1 stop30h 15m
Deal found 9/14![British Airways logo]()
$1,420
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 10/2411:59 pm -
2 stops37h 56m
Sun 11/16:00 am -
2 stops42h 37m
Deal found 9/15![United Airlines logo]()
$666
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 pm -
1 stop14h 50m
Sun 11/17:45 pm -
2 stops36h 14m
Deal found 9/15![British Airways logo]()
$855
This SWISS deal was found by Cheapflights users on 9/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:43 am -
3 stops42h 32m
Sun 11/111:15 am -
3 stops43h 47m
Deal found 9/15![SWISS logo]()
$979
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:30 pm -
2 stops22h 25m
Sun 11/14:00 pm -
3 stops35h 00m
Deal found 9/15![Multiple Airlines logo]()
$1,012
Find 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 September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $627 (Justfly.com) |
Popular in | June |
Cheapest in | April |
Average price | $917 |
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 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Portland to Sofia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Wed 11/4
2:34 pm-6:20 pm
2 stops17h 46m
Sofia
Sun 11/8
6:00 am-8:46 pm
2 stops24h 46m
$656
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Sat 10/24
11:59 pm-10:55 pm
2 stops37h 56m
Sofia
Sun 11/1
6:00 am-3:37 pm
2 stops42h 37m
$666
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Wed 1/13
7:01 am-1:25 pm
2 stops20h 24m
Sofia
Tue 2/2
6:25 am-6:39 pm
2 stops22h 14m
$676
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Wed 11/4
1:22 pm-7:20 pm
2 stops43h 58m
Sofia
Sun 11/8
7:45 pm-3:50 pm
1 stop30h 05m
$706
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Sat 1/9
4:05 pm-10:55 pm
3 stops44h 50m
Sofia
Sat 1/30
6:00 am-9:40 am
2 stops37h 40m
$709
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Fri 1/15
3:30 pm-10:55 pm
2 stops45h 25m
Sofia
Sat 1/30
2:10 pm-12:26 pm
2 stops32h 16m
$722
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Thu 1/14
2:35 pm-10:55 pm
2 stops22h 20m
Sofia
Sun 1/31
6:25 am-11:18 pm
2 stops26h 53m
$722
Quickest round-trip
PortlandSofia
PDX Portland - SOF Sofia
PDXSOF
Portland
Tue 1/12
7:01 am-1:15 pm
3 stops20h 14m
Sofia
Sat 1/30
6:25 am-6:39 pm
2 stops22h 14m
$727
Sorted by cheapest first
Compare providers for flights from Portland to Sofia
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Sofia in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Sofia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
PDX-SOF
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
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 September 18, 2026.
Read reviews from past customers who have flown KLM,United Airlines, andLufthansa 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.
Entertainment
7.2
Comfort
7.7
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Comfort
7.7
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Comfort
7.7
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Comfort
7.7
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
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.
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Alternative routes for Portland to Sofia
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Complete your trip
Complete your trip to Sofia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Sofia by cabin class
Find flights from Portland to Sofia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Sofia flights
Browse other Portland and Sofia flight options. Last updated on September 18, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Sofia
Explore flights to Sofia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Top 3 airlines flying from Portland to Sofia
Discover the top 3 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 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$555 | Average$807 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$555 | Average$1,084 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$666 | Average$843 | FlexibilityNo cancel fee | On-time69% |