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Cheap flights from Portland to Sofia from $467

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Sofia departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:15 pm - 11:10 pm
PDX
-
SOF
21h 55m
2 stops
Multiple Airlines Logo
6:20 am - 6:30 pm
SOF
-
PDX
22h 10m
2 stops
$467Multiple Airlines
Wed, Apr 1 - Wed, Apr 22
Lufthansa Logo
3:46 pm - 10:45 pm
PDX
-
SOF
20h 59m
2 stops
Lufthansa Logo
6:00 am - 6:49 pm
SOF
-
PDX
22h 49m
2 stops
$489Lufthansa
Tue, Feb 10 - Tue, Feb 24
KLM Logo
9:05 am - 2:00 pm
PDX
-
SOF
18h 55m
2 stops
KLM Logo
7:00 am - 11:10 am
SOF
-
PDX
14h 10m
1 stop
$495KLM
Wed, Apr 1 - Wed, Apr 22
United Airlines Logo
1:24 pm - 6:20 pm
PDX
-
SOF
18h 56m
3 stops
United Airlines Logo
6:00 am - 6:55 pm
SOF
-
PDX
22h 55m
2 stops
$502United Airlines
Tue, Feb 10 - Tue, Feb 24
Multiple Airlines Logo
7:05 pm - 6:20 pm
PDX
-
SOF
37h 15m
2 stops
Multiple Airlines Logo
7:05 pm - 8:15 am
SOF
-
PDX
47h 10m
2 stops
$504Multiple Airlines
Sat, Feb 21 - Sat, Mar 7
Multiple Airlines Logo
3:15 pm - 11:10 pm
PDX
-
SOF
21h 55m
2 stops
Multiple Airlines Logo
6:20 am - 6:34 pm
SOF
-
PDX
22h 14m
3 stops
$506Multiple Airlines
Wed, Apr 1 - Wed, Apr 22
KLM Logo
7:00 am - 2:05 pm
PDX
-
SOF
21h 05m
2 stops
KLM Logo
7:00 am - 11:25 am
SOF
-
PDX
14h 25m
1 stop
$518KLM
Fri, Feb 27 - Fri, Mar 6
British Airways Logo
11:46 am - 1:25 pm
PDX
-
SOF
39h 39m
2 stops
British Airways Logo
9:25 pm - 5:40 pm
SOF
-
PDX
30h 15m
1 stop
$523British Airways
Wed, Apr 1 - Wed, Apr 22
KLM Logo
7:00 am - 2:05 pm
PDX
-
SOF
21h 05m
2 stops
KLM Logo
7:00 am - 5:33 pm
SOF
-
PDX
20h 33m
2 stops
$528KLM
Fri, Feb 27 - Fri, Mar 6
United Airlines Logo
7:30 am - 10:45 pm
PDX
-
SOF
29h 15m
2 stops
United Airlines Logo
1:45 pm - 6:55 pm
SOF
-
PDX
39h 10m
2 stops
$536United Airlines
Thu, Feb 26 - Mon, Mar 2

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
Feb 10
PDX1:24 pmPortland
18h 56m
3 stops
SOF6:20 pmSofia
Feb 24
SOF6:00 amSofia
22h 55m
2 stops
PDX6:55 pmPortland
$502
United Airlines
Feb 26
PDX7:30 amPortland
29h 15m
2 stops
SOF10:45 pmSofia
Mar 2
SOF1:45 pmSofia
39h 10m
2 stops
PDX6:55 pmPortland
$536
United Airlines
Feb 26
PDX1:18 pmPortland
23h 27m
3 stops
SOF10:45 pmSofia
Mar 2
SOF6:05 amSofia
28h 29m
2 stops
PDX12:34 amPortland
$560

Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets
Lufthansa
Feb 10
PDX3:46 pmPortland
20h 59m
2 stops
SOF10:45 pmSofia
Feb 24
SOF6:00 amSofia
22h 49m
2 stops
PDX6:49 pmPortland
$489
Lufthansa
Feb 5
PDX3:50 pmPortland
20h 55m
2 stops
SOF10:45 pmSofia
Feb 19
SOF6:00 amSofia
22h 55m
2 stops
PDX6:55 pmPortland
$539

momondo 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, momondo users made 832,500 searches. Data last updated January 15, 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

Price

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 4/1

3:15 pm-11:10 pm

2 stops21h 55m

Sofia

Wed 4/22

6:20 am-6:30 pm

2 stops22h 10m

$467

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 2/10

3:46 pm-10:45 pm

2 stops20h 59m

Sofia

Tue 2/24

6:00 am-6:49 pm

2 stops22h 49m

$489

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 4/1

9:05 am-2:00 pm

2 stops18h 55m

Sofia

Wed 4/22

7:00 am-11:10 am

1 stop14h 10m

$495

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 2/10

1:24 pm-6:20 pm

3 stops18h 56m

Sofia

Tue 2/24

6:00 am-6:55 pm

2 stops22h 55m

$502

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 2/21

7:05 pm-6:20 pm

2 stops37h 15m

Sofia

Sat 3/7

7:05 pm-8:15 am

2 stops47h 10m

$504

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 4/1

3:15 pm-11:10 pm

2 stops21h 55m

Sofia

Wed 4/22

6:20 am-6:34 pm

3 stops22h 14m

$506

PortlandSofia

PDX - SOF

PDXSOF

Portland

Fri 2/27

7:00 am-2:05 pm

2 stops21h 05m

Sofia

Fri 3/6

7:00 am-11:25 am

1 stop14h 25m

$518

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 4/1

11:46 am-1:25 pm

2 stops39h 39m

Sofia

Wed 4/22

9:25 pm-5:40 pm

1 stop30h 15m

$523

PortlandSofia

PDX - SOF

PDXSOF

Portland

Fri 2/27

7:00 am-2:05 pm

2 stops21h 05m

Sofia

Fri 3/6

7:00 am-5:33 pm

2 stops20h 33m

$528

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 2/26

7:30 am-10:45 pm

2 stops29h 15m

Sofia

Mon 3/2

1:45 pm-6:55 pm

2 stops39h 10m

$536

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Sofia from

How to get the cheapest flight ticket from Portland to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Portland is in May. Flight prices, which tend to average around $555, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Sofia from Portland during February instead. Flights to Sofia in February, while not as cheap as those in May, still average around $662.

When to book flights from Portland to Sofia

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Sofia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Sofia (PDX to SOF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Sofia

Fastest flight time

21h 55m

Direct flights

None
The fastest flight from Portland to Sofia takes 21h 55m
There are no direct flights from Portland to Sofia. There are no popular flight routes from Portland to Sofia.
Search flight deals

  • How far is Portland to Sofia by plane?

    A flight from Portland to Sofia will travel around 5988.5 mi. 21h 55m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Sofia Airport?

    Prices for flights from Portland Airport to Sofia Airport are updated daily.

  • How many operators does momondo search for flights from Portland Airport to Sofia Airport?

  • How old do you have to be to fly from Portland Airport to Sofia Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Sofia Airport.

  • What documentation or ID do you need to fly to Sofia Airport?

    The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland to Sofia?

Best airlines flying from Portland to Sofia

Compare and see reviews for airlines that fly from Portland to Sofia with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $555Free CancellationRating
7.7
1,440 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
7,717 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,164 reviews
Search United Airlines flights

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Bansko
Borovets
Velingrad
Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Sofia?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Sofia. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Sofia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portland to Sofia flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Sofia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Sofia.

I’m not ready to book a flight from Portland to Sofia right now. Can momondo alert me if prices change?

Price alerts on flights to Sofia from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
KLM
United Airlines
Lufthansa