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Cheap flights from Portland to Sofia from $750

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 12/13. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:00 am - 10:45 pm
PDX
-
SOF
28h 45m
2 stops
United Airlines Logo
6:25 am - 12:54 am
SOF
-
PDX
28h 29m
2 stops
$750United Airlines
Sun, Dec 13 - Thu, Dec 24
Lufthansa Logo
2:30 pm - 6:20 pm
PDX
-
SOF
17h 50m
2 stops
Lufthansa Logo
2:00 pm - 12:35 am
SOF
-
PDX
20h 35m
2 stops
$779Lufthansa
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
3:36 pm - 10:45 pm
PDX
-
SOF
21h 09m
2 stops
Multiple Airlines Logo
6:25 am - 6:31 pm
SOF
-
PDX
22h 06m
2 stops
$782Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
KLM Logo
1:20 pm - 2:05 pm
PDX
-
SOF
14h 45m
1 stop
KLM Logo
7:00 am - 11:20 am
SOF
-
PDX
14h 20m
1 stop
$788KLM
Wed, Nov 4 - Sun, Nov 8
KLM Logo
10:15 am - 2:05 pm
PDX
-
SOF
17h 50m
2 stops
KLM Logo
7:00 am - 11:20 am
SOF
-
PDX
14h 20m
1 stop
$793KLM
Wed, Nov 4 - Sun, Nov 8
Air Canada Logo
10:00 am - 6:10 pm
PDX
-
SOF
22h 10m
3 stops
Air Canada Logo
6:25 am - 6:31 pm
SOF
-
PDX
22h 06m
2 stops
$797Air Canada
Wed, Nov 4 - Sun, Nov 8
KLM Logo
1:20 pm - 2:05 pm
PDX
-
SOF
14h 45m
1 stop
KLM Logo
7:00 am - 7:43 pm
SOF
-
PDX
22h 43m
2 stops
$798KLM
Wed, Nov 4 - Sat, Nov 7
United Airlines Logo
10:00 am - 6:20 pm
PDX
-
SOF
22h 20m
2 stops
United Airlines Logo
6:25 am - 10:44 pm
SOF
-
PDX
26h 19m
3 stops
$800United Airlines
Wed, Nov 4 - Sat, Nov 7
Air Canada Logo
10:00 am - 6:10 pm
PDX
-
SOF
22h 10m
3 stops
Air Canada Logo
6:00 am - 6:31 pm
SOF
-
PDX
22h 31m
3 stops
$820Air Canada
Wed, Nov 4 - Sun, Nov 8
Air Canada Logo
10:00 am - 6:20 pm
PDX
-
SOF
22h 20m
3 stops
Air Canada Logo
6:25 am - 6:31 pm
SOF
-
PDX
22h 06m
2 stops
$821Air Canada
Wed, Nov 4 - Sun, Nov 8

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KLM flights from Portland to Sofia

Our best KLM deals on Portland to Sofia flight tickets
KLM
Nov 4
PDX1:20 pmPortland
14h 45m
1 stop
SOF2:05 pmSofia
Nov 8
SOF7:00 amSofia
14h 20m
1 stop
PDX11:20 amPortland
$788
KLM
Nov 4
PDX10:15 amPortland
17h 50m
2 stops
SOF2:05 pmSofia
Nov 8
SOF7:00 amSofia
14h 20m
1 stop
PDX11:20 amPortland
$793
KLM
Nov 4
PDX1:20 pmPortland
14h 45m
1 stop
SOF2:05 pmSofia
Nov 7
SOF7:00 amSofia
22h 43m
2 stops
PDX7:43 pmPortland
$798

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
Dec 13
PDX8:00 amPortland
28h 45m
2 stops
SOF10:45 pmSofia
Dec 24
SOF6:25 amSofia
28h 29m
2 stops
PDX12:54 amPortland
$750
United Airlines
Nov 4
PDX10:00 amPortland
22h 20m
2 stops
SOF6:20 pmSofia
Nov 7
SOF6:25 amSofia
26h 19m
3 stops
PDX10:44 pmPortland
$800
United Airlines
Jul 26
PDX6:50 pmPortland
42h 25m
2 stops
SOF11:15 pmSofia
Aug 3
SOF6:20 amSofia
37h 14m
2 stops
PDX9:34 amPortland
$983

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 June 30, 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

Sun 12/13

8:00 am-10:45 pm

2 stops28h 45m

Sofia

Thu 12/24

6:25 am-12:54 am

2 stops28h 29m

$750

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

2:30 pm-6:20 pm

2 stops17h 50m

Sofia

Sun 11/8

2:00 pm-12:35 am

2 stops20h 35m

$779

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

3:36 pm-10:45 pm

2 stops21h 09m

Sofia

Sun 11/8

6:25 am-6:31 pm

2 stops22h 06m

$782
Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

1:20 pm-2:05 pm

1 stop14h 45m

Sofia

Sun 11/8

7:00 am-11:20 am

1 stop14h 20m

$788

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:15 am-2:05 pm

2 stops17h 50m

Sofia

Sun 11/8

7:00 am-11:20 am

1 stop14h 20m

$793

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:00 am-6:10 pm

3 stops22h 10m

Sofia

Sun 11/8

6:25 am-6:31 pm

2 stops22h 06m

$797

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

1:20 pm-2:05 pm

1 stop14h 45m

Sofia

Sat 11/7

7:00 am-7:43 pm

2 stops22h 43m

$798

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:00 am-6:20 pm

2 stops22h 20m

Sofia

Sat 11/7

6:25 am-10:44 pm

3 stops26h 19m

$800

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:00 am-6:10 pm

3 stops22h 10m

Sofia

Sun 11/8

6:00 am-6:31 pm

3 stops22h 31m

$820

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:00 am-6:20 pm

3 stops22h 20m

Sofia

Sun 11/8

6:25 am-6:31 pm

2 stops22h 06m

$821

Flights are sorted by cheapest round-trip flights first.

Sorted 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 April. Flight prices, which tend to average around $595, 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.

Can stopping save me money on Portland to Sofia flights?

You could potentially save up to 46% on your flight if you consider stops on a Portland to Sofia flight.

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

22h 15m

Direct flights

None
The fastest flight from Portland to Sofia takes 22h 15m
There are no direct flights from Portland to Sofia. There are no popular flight routes from Portland to Sofia.
Search flight deals

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. 22h 15m 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
1,531 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
8,109 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,901 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