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Cheap flights from Portland to Sofia from $627

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 8/4. 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
1 adult, Economy, 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.
Lufthansa Logo
8:35 am - 11:00 pm
PDX
-
SOF
28h 25m
2 stops
Lufthansa Logo
6:40 pm - 12:47 am
SOF
-
PDX
40h 07m
2 stops
$627Lufthansa
Tue, Aug 4 - Tue, Aug 18
United Airlines Logo
5:15 am - 6:40 pm
PDX
-
SOF
27h 25m
3 stops
United Airlines Logo
6:20 am - 11:09 pm
SOF
-
PDX
26h 49m
2 stops
$652United Airlines
Wed, Aug 5 - Mon, Aug 24
United Airlines Logo
5:00 pm - 12:10 pm
PDX
-
SOF
33h 10m
2 stops
United Airlines Logo
6:20 am - 9:29 am
SOF
-
PDX
37h 09m
2 stops
$657United Airlines
Sat, Aug 8 - Mon, Aug 24
Lufthansa Logo
8:35 am - 11:00 pm
PDX
-
SOF
28h 25m
2 stops
Lufthansa Logo
6:40 pm - 12:47 am
SOF
-
PDX
40h 07m
2 stops
$677Lufthansa
Tue, Aug 4 - Tue, Aug 18
United Airlines Logo
11:40 pm - 12:10 pm
PDX
-
SOF
26h 30m
2 stops
United Airlines Logo
6:20 am - 8:20 pm
SOF
-
PDX
24h 00m
2 stops
$682United Airlines
Sun, Aug 9 - Sun, Aug 23
United Airlines Logo
10:40 pm - 12:10 pm
PDX
-
SOF
27h 30m
2 stops
United Airlines Logo
2:10 pm - 9:29 am
SOF
-
PDX
29h 19m
2 stops
$683United Airlines
Sat, Aug 1 - Thu, Aug 20
United Airlines Logo
5:15 am - 11:00 pm
PDX
-
SOF
31h 45m
2 stops
United Airlines Logo
6:20 am - 10:52 pm
SOF
-
PDX
26h 32m
2 stops
$687United Airlines
Sun, Aug 2 - Mon, Aug 24
United Airlines Logo
5:15 am - 11:00 pm
PDX
-
SOF
31h 45m
2 stops
United Airlines Logo
6:30 am - 9:29 am
SOF
-
PDX
36h 59m
2 stops
$688United Airlines
Sun, Aug 2 - Thu, Aug 20
United Airlines Logo
10:40 pm - 12:10 pm
PDX
-
SOF
27h 30m
2 stops
United Airlines Logo
6:10 am - 9:21 am
SOF
-
PDX
37h 11m
2 stops
$690United Airlines
Sat, Aug 1 - Sun, Aug 23
United Airlines Logo
11:40 pm - 1:35 pm
PDX
-
SOF
27h 55m
2 stops
United Airlines Logo
6:20 am - 8:20 pm
SOF
-
PDX
24h 00m
2 stops
$694United Airlines
Sat, Aug 8 - Sun, Aug 23

Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets
Lufthansa
Aug 4
PDX8:35 amPortland
28h 25m
2 stops
SOF11:00 pmSofia
Aug 18
SOF6:40 pmSofia
40h 07m
2 stops
PDX12:47 amPortland
$627
Lufthansa
Aug 4
PDX8:35 amPortland
28h 25m
2 stops
SOF11:00 pmSofia
Aug 18
SOF6:40 pmSofia
40h 07m
2 stops
PDX12:47 amPortland
$677
Lufthansa
Aug 6
PDX8:35 amPortland
28h 25m
2 stops
SOF11:00 pmSofia
Aug 24
SOF7:00 pmSofia
38h 09m
2 stops
PDX11:09 pmPortland
$757

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
Aug 5
PDX5:15 amPortland
27h 25m
3 stops
SOF6:40 pmSofia
Aug 24
SOF6:20 amSofia
26h 49m
2 stops
PDX11:09 pmPortland
$652
United Airlines
Aug 8
PDX5:00 pmPortland
33h 10m
2 stops
SOF12:10 pmSofia
Aug 24
SOF6:20 amSofia
37h 09m
2 stops
PDX9:29 amPortland
$657
United Airlines
Aug 9
PDX11:40 pmPortland
26h 30m
2 stops
SOF12:10 pmSofia
Aug 23
SOF6:20 amSofia
24h 00m
2 stops
PDX8:20 pmPortland
$682

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 March 11, 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

Cheapest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 8/4

8:35 am-11:00 pm

2 stops28h 25m

Sofia

Tue 8/18

6:40 pm-12:47 am

2 stops40h 07m

$627

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 8/5

5:15 am-6:40 pm

3 stops27h 25m

Sofia

Mon 8/24

6:20 am-11:09 pm

2 stops26h 49m

$652

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 8/8

5:00 pm-12:10 pm

2 stops33h 10m

Sofia

Mon 8/24

6:20 am-9:29 am

2 stops37h 09m

$657

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 8/4

8:35 am-11:00 pm

2 stops28h 25m

Sofia

Tue 8/18

6:40 pm-12:47 am

2 stops40h 07m

$677
Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/9

11:40 pm-12:10 pm

2 stops26h 30m

Sofia

Sun 8/23

6:20 am-8:20 pm

2 stops24h 00m

$682

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 8/1

10:40 pm-12:10 pm

2 stops27h 30m

Sofia

Thu 8/20

2:10 pm-9:29 am

2 stops29h 19m

$683

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/2

5:15 am-11:00 pm

2 stops31h 45m

Sofia

Mon 8/24

6:20 am-10:52 pm

2 stops26h 32m

$687

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/2

5:15 am-11:00 pm

2 stops31h 45m

Sofia

Thu 8/20

6:30 am-9:29 am

2 stops36h 59m

$688

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 8/1

10:40 pm-12:10 pm

2 stops27h 30m

Sofia

Sun 8/23

6:10 am-9:21 am

2 stops37h 11m

$690

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 8/8

11:40 pm-1:35 pm

2 stops27h 55m

Sofia

Sun 8/23

6:20 am-8:20 pm

2 stops24h 00m

$694

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 March. Flight prices, which tend to average around $684, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Sofia from Portland during May instead. Flights to Sofia in May, while not as cheap as those in March, still average around $687.

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 00m

Direct flights

None
The fastest flight from Portland to Sofia takes 21h 00m
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 00m 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
7.8
1,469 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
7,843 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,415 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