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Cheap flights from Portland to Sofia from $284

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Sofia departing on 4/14. 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
2:30 pm - 11:15 pm
PDX
-
SOF
22h 45m
2 stops
Lufthansa Logo
6:10 am - 7:05 pm
SOF
-
PDX
22h 55m
2 stops
$788Lufthansa
Tue, Apr 28 - Tue, May 5
United Airlines Logo
7:00 am - 12:10 pm
PDX
-
SOF
19h 10m
2 stops
United Airlines Logo
6:20 am - 6:47 pm
SOF
-
PDX
22h 27m
2 stops
$801United Airlines
Wed, Jul 29 - Wed, Aug 26
United Airlines Logo
8:50 am - 11:15 pm
PDX
-
SOF
28h 25m
2 stops
United Airlines Logo
6:10 am - 8:55 pm
SOF
-
PDX
24h 45m
2 stops
$803United Airlines
Mon, Jul 27 - Tue, Aug 25
Multiple Airlines Logo
11:05 am - 11:15 pm
PDX
-
SOF
26h 10m
2 stops
Multiple Airlines Logo
1:05 pm - 7:06 pm
SOF
-
PDX
40h 01m
2 stops
$811Multiple Airlines
Wed, Jul 29 - Tue, Sep 8
United Airlines Logo
10:40 pm - 10:55 am
PDX
-
SOF
26h 15m
2 stops
United Airlines Logo
6:20 am - 3:30 pm
SOF
-
PDX
19h 10m
2 stops
$813United Airlines
Sun, Jul 26 - Wed, Aug 26
United Airlines Logo
10:40 pm - 10:55 am
PDX
-
SOF
26h 15m
2 stops
United Airlines Logo
6:10 am - 5:43 pm
SOF
-
PDX
21h 33m
2 stops
$815United Airlines
Sun, Jul 26 - Tue, Aug 25
United Airlines Logo
8:50 am - 11:15 pm
PDX
-
SOF
28h 25m
2 stops
United Airlines Logo
6:20 am - 12:47 am
SOF
-
PDX
28h 27m
2 stops
$826United Airlines
Mon, Jul 27 - Sat, Aug 22
United Airlines Logo
11:40 pm - 12:10 pm
PDX
-
SOF
26h 30m
2 stops
United Airlines Logo
6:10 am - 5:43 pm
SOF
-
PDX
21h 33m
2 stops
$828United Airlines
Thu, Jul 30 - Tue, Aug 25
United Airlines Logo
6:03 pm - 11:15 pm
PDX
-
SOF
19h 12m
2 stops
United Airlines Logo
6:30 am - 5:43 pm
SOF
-
PDX
21h 13m
2 stops
$832United Airlines
Tue, Jul 28 - Thu, Aug 27
United Airlines Logo
10:40 pm - 10:55 am
PDX
-
SOF
26h 15m
2 stops
United Airlines Logo
2:20 pm - 3:30 pm
SOF
-
PDX
35h 10m
2 stops
$833United Airlines
Sun, Jul 26 - Mon, Aug 24

Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets
Lufthansa
Apr 28
PDX2:30 pmPortland
22h 45m
2 stops
SOF11:15 pmSofia
May 5
SOF6:10 amSofia
22h 55m
2 stops
PDX7:05 pmPortland
$788
Lufthansa
May 17
PDX3:15 pmPortland
22h 00m
2 stops
SOF11:15 pmSofia
May 26
SOF2:10 pmSofia
19h 43m
2 stops
PDX11:53 pmPortland
$859
Lufthansa
Sep 12
PDX2:15 pmPortland
35h 55m
2 stops
SOF12:10 pmSofia
Oct 10
SOF1:55 pmSofia
20h 07m
2 stops
PDX12:02 amPortland
$860

Air Canada flights from Portland to Sofia

Our best Air Canada deals on Portland to Sofia flight tickets
Air Canada
Apr 28
PDX7:00 amPortland
25h 00m
3 stops
SOF6:00 pmSofia
May 5
SOF6:10 amSofia
22h 55m
2 stops
PDX7:05 pmPortland
$872
Air Canada
Apr 28
PDX7:00 amPortland
25h 00m
3 stops
SOF6:00 pmSofia
May 5
SOF6:10 amSofia
26h 25m
3 stops
PDX10:35 pmPortland
$891

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 April 1, 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 4/28

2:30 pm-11:15 pm

2 stops22h 45m

Sofia

Tue 5/5

6:10 am-7:05 pm

2 stops22h 55m

$788

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 7/29

7:00 am-12:10 pm

2 stops19h 10m

Sofia

Wed 8/26

6:20 am-6:47 pm

2 stops22h 27m

$801

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 7/27

8:50 am-11:15 pm

2 stops28h 25m

Sofia

Tue 8/25

6:10 am-8:55 pm

2 stops24h 45m

$803

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 7/29

11:05 am-11:15 pm

2 stops26h 10m

Sofia

Tue 9/8

1:05 pm-7:06 pm

2 stops40h 01m

$811

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 7/26

10:40 pm-10:55 am

2 stops26h 15m

Sofia

Wed 8/26

6:20 am-3:30 pm

2 stops19h 10m

$813

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 7/26

10:40 pm-10:55 am

2 stops26h 15m

Sofia

Tue 8/25

6:10 am-5:43 pm

2 stops21h 33m

$815

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 7/27

8:50 am-11:15 pm

2 stops28h 25m

Sofia

Sat 8/22

6:20 am-12:47 am

2 stops28h 27m

$826

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 7/30

11:40 pm-12:10 pm

2 stops26h 30m

Sofia

Tue 8/25

6:10 am-5:43 pm

2 stops21h 33m

$828
Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 7/28

6:03 pm-11:15 pm

2 stops19h 12m

Sofia

Thu 8/27

6:30 am-5:43 pm

2 stops21h 13m

$832

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 7/26

10:40 pm-10:55 am

2 stops26h 15m

Sofia

Mon 8/24

2:20 pm-3:30 pm

2 stops35h 10m

$833

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Portland and Sofia?

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

18h 56m

Direct flights

None
The fastest flight from Portland to Sofia takes 18h 56m
There are no direct flights from Portland to Sofia. There are no popular flight routes from Portland to Sofia.
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Frequently asked questions about flying from Portland to Sofia

  • How far is Portland to Sofia by plane?

    A flight from Portland to Sofia will travel around 5988.5 mi. 18h 56m 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
1,481 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
7,882 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,535 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