Cheap flights from Portland to Sofia from $351

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 9/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Air Canada Logo
7:40 pm - 6:20 pmPDX-SOF
37h 40m2 stops
Air Canada Logo
6:00 am - 9:15 amSOF-PDX
37h 15m2 stops
$551Air Canada
Find Deal
Sat, Oct 25 - Thu, Nov 6
Multiple Airlines Logo
6:15 am - 6:20 pmPDX-SOF
27h 05m2 stops
Multiple Airlines Logo
6:10 am - 6:36 pmSOF-PDX
22h 26m2 stops
$561Multiple Airlines
Find Deal
Sun, Oct 26 - Wed, Nov 5
United Airlines Logo
8:30 am - 6:20 pmPDX-SOF
24h 50m2 stops
United Airlines Logo
2:35 pm - 12:26 amSOF-PDX
19h 51m2 stops
$566United Airlines
Find Deal
Mon, Oct 27 - Thu, Nov 6
United Airlines Logo
11:59 pm - 1:35 pmPDX-SOF
28h 36m2 stops
United Airlines Logo
6:10 am - 6:36 pmSOF-PDX
22h 26m2 stops
$570United Airlines
Find Deal
Sat, Oct 25 - Wed, Nov 5
Lufthansa Logo
5:15 pm - 11:45 pmPDX-SOF
44h 30m2 stops
Lufthansa Logo
6:45 pm - 10:33 pmSOF-PDX
37h 48m2 stops
$600Lufthansa
Find Deal
Sat, Oct 25 - Mon, Nov 3
KLM Logo
2:25 pm - 2:05 pmPDX-SOF
14h 40m1 stop
KLM Logo
7:00 am - 8:26 pmSOF-PDX
23h 26m2 stops
$615KLM
Find Deal
Sun, Oct 26 - Tue, Nov 4
Lufthansa Logo
3:54 pm - 10:45 pmPDX-SOF
21h 51m2 stops
Lufthansa Logo
6:25 am - 12:46 amSOF-PDX
28h 21m2 stops
$621Lufthansa
Find Deal
Wed, Oct 29 - Sat, Nov 8
British Airways Logo
7:25 pm - 2:00 pmPDX-SOF
32h 35m1 stop
British Airways Logo
12:05 pm - 3:55 pmSOF-PDX
37h 50m1 stop
$648British Airways
Find Deal
Fri, Oct 24 - Sat, Nov 8
British Airways Logo
7:25 pm - 2:00 pmPDX-SOF
32h 35m1 stop
British Airways Logo
2:30 pm - 3:55 pmSOF-PDX
35h 25m1 stop
$738British Airways
Find Deal
Fri, Oct 24 - Sun, Nov 2
KLM Logo
12:55 pm - 2:00 pmPDX-SOF
15h 05m1 stop
KLM Logo
7:00 am - 7:19 pmSOF-PDX
22h 19m2 stops
$918KLM
Find Deal
Sun, Oct 5 - Sun, Oct 12

Air Canada flights from Portland to Sofia

Our best Air Canada deals on Portland to Sofia flight tickets
Air Canada
Oct 25
PDX7:40 pmPortland
37h 40m
2 stops
SOF6:20 pmSofia
Nov 6
SOF6:00 amSofia
37h 15m
2 stops
PDX9:15 amPortland
Air Canada
Oct 24
PDX9:55 amPortland
17h 30m
2 stops
SOF1:25 pmSofia
Nov 7
SOF6:10 amSofia
22h 20m
2 stops
PDX6:30 pmPortland
Air Canada
Dec 6
PDX9:50 amPortland
22h 30m
3 stops
SOF6:20 pmSofia
Dec 11
SOF6:00 amSofia
37h 15m
3 stops
PDX9:15 amPortland

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
Oct 27
PDX8:30 amPortland
24h 50m
2 stops
SOF6:20 pmSofia
Nov 6
SOF2:35 pmSofia
19h 51m
2 stops
PDX12:26 amPortland
United Airlines
Oct 25
PDX11:59 pmPortland
28h 36m
2 stops
SOF1:35 pmSofia
Nov 5
SOF6:10 amSofia
22h 26m
2 stops
PDX6:36 pmPortland
United Airlines
Oct 26
PDX10:05 amPortland
23h 15m
2 stops
SOF6:20 pmSofia
Nov 3
SOF2:20 pmSofia
40h 18m
2 stops
PDX8:38 pmPortland

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 September 17, 2025.
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

Sat 10/25

7:40 pm-6:20 pm

2 stops37h 40m

Sofia

Thu 11/6

6:00 am-9:15 am

2 stops37h 15m

$551

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 10/26

6:15 am-6:20 pm

2 stops27h 05m

Sofia

Wed 11/5

6:10 am-6:36 pm

2 stops22h 26m

$561

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 10/27

8:30 am-6:20 pm

2 stops24h 50m

Sofia

Thu 11/6

2:35 pm-12:26 am

2 stops19h 51m

$566

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 10/25

11:59 pm-1:35 pm

2 stops28h 36m

Sofia

Wed 11/5

6:10 am-6:36 pm

2 stops22h 26m

$570

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 10/25

5:15 pm-11:45 pm

2 stops44h 30m

Sofia

Mon 11/3

6:45 pm-10:33 pm

2 stops37h 48m

$600

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 10/26

2:25 pm-2:05 pm

1 stop14h 40m

Sofia

Tue 11/4

7:00 am-8:26 pm

2 stops23h 26m

$615

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 10/29

3:54 pm-10:45 pm

2 stops21h 51m

Sofia

Sat 11/8

6:25 am-12:46 am

2 stops28h 21m

$621

PortlandSofia

PDX - SOF

PDXSOF

Portland

Fri 10/24

7:25 pm-2:00 pm

1 stop32h 35m

Sofia

Sat 11/8

12:05 pm-3:55 pm

1 stop37h 50m

$648

PortlandSofia

PDX - SOF

PDXSOF

Portland

Fri 10/24

7:25 pm-2:00 pm

1 stop32h 35m

Sofia

Sun 11/2

2:30 pm-3:55 pm

1 stop35h 25m

$738

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 10/5

12:55 pm-2:00 pm

1 stop15h 05m

Sofia

Sun 10/12

7:00 am-7:19 pm

2 stops22h 19m

$918

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 November. Flight prices, which tend to average around $682, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Sofia from Portland during October instead. Flights to Sofia in October, while not as cheap as those in November, still average around $761.

What is the cheapest day to depart on your flight to Sofia?

According to our data, Tuesday is the cheapest day to fly to Sofia from Portland. The lowest ticket price found for a Tuesday departure recently was $956. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Portland to Sofia on a Saturday will generally be more expensive and average around $1,199. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Sofia?

At noon is the cheapest time of day to fly from Portland to Sofia when you can find flight prices for as low as $1,012. Flying to Sofia at noon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Sofia, so prices are often more expensive at around $1,171 per ticket.

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

Direct flights

None
There are no direct flights from Portland to Sofia. There are no popular flight routes from Portland to Sofia.
  • How far is Portland to Sofia by plane?

    A flight from Portland to Sofia will travel around 5988.5 mi. 14h 40m 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
LufthansaPriceFrom $635Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Air CanadaPriceFrom $678Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
KLMPriceFrom $692Free CancellationRating
7.8
1,386 reviews
Search KLM 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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1 adult
Fri 10/17
Fri 10/24

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