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Cheap flights from Portland to Sofia from $824

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 5/12. 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.
British Airways Logo
7:30 pm - 8:30 pm
PDX
-
SOF
15h 00m
1 stop
British Airways Logo
9:25 pm - 5:40 pm
SOF
-
PDX
30h 15m
1 stop
$824British Airways
Tue, May 12 - Wed, Jun 10
British Airways Logo
7:30 pm - 8:10 pm
PDX
-
SOF
14h 40m
1 stop
British Airways Logo
9:25 pm - 5:40 pm
SOF
-
PDX
30h 15m
1 stop
$874British Airways
Sat, May 9 - Wed, Jun 10
United Airlines Logo
5:30 am - 6:40 pm
PDX
-
SOF
27h 10m
2 stops
United Airlines Logo
6:20 am - 10:30 pm
SOF
-
PDX
26h 10m
2 stops
$892United Airlines
Thu, May 7 - Wed, Jun 10
United Airlines Logo
5:30 am - 11:15 pm
PDX
-
SOF
31h 45m
3 stops
United Airlines Logo
6:20 am - 12:50 am
SOF
-
PDX
28h 30m
2 stops
$893United Airlines
Mon, May 11 - Fri, Jun 12
United Airlines Logo
5:35 pm - 11:15 pm
PDX
-
SOF
19h 40m
2 stops
United Airlines Logo
6:10 am - 10:30 pm
SOF
-
PDX
26h 20m
2 stops
$894United Airlines
Mon, May 11 - Thu, Jun 11
United Airlines Logo
10:40 pm - 12:10 pm
PDX
-
SOF
27h 30m
2 stops
United Airlines Logo
6:20 am - 8:50 pm
SOF
-
PDX
24h 30m
2 stops
$901United Airlines
Sat, Aug 1 - Sat, Aug 22
British Airways Logo
7:30 pm - 1:25 pm
PDX
-
SOF
31h 55m
1 stop
British Airways Logo
9:25 pm - 5:40 pm
SOF
-
PDX
30h 15m
1 stop
$938British Airways
Wed, May 13 - Wed, Jun 10
British Airways Logo
7:30 pm - 8:30 pm
PDX
-
SOF
15h 00m
1 stop
British Airways Logo
9:05 pm - 5:40 pm
SOF
-
PDX
30h 35m
1 stop
$940British Airways
Tue, May 12 - Sun, Jun 7
United Airlines Logo
5:30 am - 6:40 pm
PDX
-
SOF
27h 10m
2 stops
United Airlines Logo
6:30 am - 10:59 pm
SOF
-
PDX
26h 29m
2 stops
$942United Airlines
Thu, May 7 - Thu, May 14
United Airlines Logo
5:30 am - 6:40 pm
PDX
-
SOF
27h 10m
2 stops
United Airlines Logo
2:10 pm - 12:50 am
SOF
-
PDX
20h 40m
2 stops
$948United Airlines
Thu, May 7 - Tue, Jun 9

British Airways flights from Portland to Sofia

Our best British Airways deals on Portland to Sofia flight tickets
British Airways
May 12
PDX7:30 pmPortland
15h 00m
1 stop
SOF8:30 pmSofia
Jun 10
SOF9:25 pmSofia
30h 15m
1 stop
PDX5:40 pmPortland
$824
British Airways
May 9
PDX7:30 pmPortland
14h 40m
1 stop
SOF8:10 pmSofia
Jun 10
SOF9:25 pmSofia
30h 15m
1 stop
PDX5:40 pmPortland
$874
British Airways
May 13
PDX7:30 pmPortland
31h 55m
1 stop
SOF1:25 pmSofia
Jun 10
SOF9:25 pmSofia
30h 15m
1 stop
PDX5:40 pmPortland
$938

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
May 7
PDX5:30 amPortland
27h 10m
2 stops
SOF6:40 pmSofia
Jun 10
SOF6:20 amSofia
26h 10m
2 stops
PDX10:30 pmPortland
$892
United Airlines
May 11
PDX5:30 amPortland
31h 45m
3 stops
SOF11:15 pmSofia
Jun 12
SOF6:20 amSofia
28h 30m
2 stops
PDX12:50 amPortland
$893
United Airlines
May 11
PDX5:35 pmPortland
19h 40m
2 stops
SOF11:15 pmSofia
Jun 11
SOF6:10 amSofia
26h 20m
2 stops
PDX10:30 pmPortland
$894

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 9, 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 5/12

7:30 pm-8:30 pm

1 stop15h 00m

Sofia

Wed 6/10

9:25 pm-5:40 pm

1 stop30h 15m

$824
Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 5/9

7:30 pm-8:10 pm

1 stop14h 40m

Sofia

Wed 6/10

9:25 pm-5:40 pm

1 stop30h 15m

$874

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 5/7

5:30 am-6:40 pm

2 stops27h 10m

Sofia

Wed 6/10

6:20 am-10:30 pm

2 stops26h 10m

$892

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 5/11

5:30 am-11:15 pm

3 stops31h 45m

Sofia

Fri 6/12

6:20 am-12:50 am

2 stops28h 30m

$893

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 5/11

5:35 pm-11:15 pm

2 stops19h 40m

Sofia

Thu 6/11

6:10 am-10:30 pm

2 stops26h 20m

$894

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 8/1

10:40 pm-12:10 pm

2 stops27h 30m

Sofia

Sat 8/22

6:20 am-8:50 pm

2 stops24h 30m

$901

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 5/13

7:30 pm-1:25 pm

1 stop31h 55m

Sofia

Wed 6/10

9:25 pm-5:40 pm

1 stop30h 15m

$938

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 5/12

7:30 pm-8:30 pm

1 stop15h 00m

Sofia

Sun 6/7

9:05 pm-5:40 pm

1 stop30h 35m

$940

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 5/7

5:30 am-6:40 pm

2 stops27h 10m

Sofia

Thu 5/14

6:30 am-10:59 pm

2 stops26h 29m

$942

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 5/7

5:30 am-6:40 pm

2 stops27h 10m

Sofia

Tue 6/9

2:10 pm-12:50 am

2 stops20h 40m

$948

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 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 April. Flight prices, which tend to average around $589, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Sofia from Portland during March instead. Flights to Sofia in March, while not as cheap as those in April, still average around $684.

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

17h 10m

Direct flights

None
The fastest flight from Portland to Sofia takes 17h 10m
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. 17h 10m 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
1,492 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
7,900 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,554 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