What airlines fly to Sofia?

KLM, United Airlines and Lufthansa are the top three most popular airlines that fly to Sofia from Portland according to our data. KLM is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 3 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Portland to Sofia?

British Airways and United Airlines are the most popular carriers operating from Portland to Sofia

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?

As of September 2026, there are 3 operators available to choose from 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.

$331 Cheap Flights from Portland to Sofia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Sofia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 6:20 pmPDX Portland-SOF Sofia

17h 45m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:25 am - 6:31 pmSOF Sofia-PDX Portland

22h 06m2 stops Frankfurt am Main Vancouver Intl

$627Multiple Airlines

Sun, Jan 10 - Fri, Jan 29

3:30 pm - 11:00 pmPDX Portland-SOF Sofia

45h 30m2 stops Vancouver Intl Frankfurt am Main

6:00 am - 6:31 pmSOF Sofia-PDX Portland

22h 31m2 stops Munich Franz Josef Strauss Vancouver Intl

$631Multiple Airlines

Sat, Oct 10 - Thu, Nov 5

7:01 am - 6:20 pmPDX Portland-SOF Sofia

25h 19m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:25 am - 10:43 pmSOF Sofia-PDX Portland

26h 18m2 stops Frankfurt am Main San Francisco

$633Lufthansa

Wed, Jan 13 - Fri, Jan 29

1:39 pm - 3:25 pmPDX Portland-SOF Sofia

39h 46m2 stops San Francisco Zurich

4:15 pm - 10:43 pmSOF Sofia-PDX Portland

40h 28m2 stops Zurich San Francisco

$636SWISS

Tue, Jan 12 - Thu, Jan 28

1:39 pm - 3:25 pmPDX Portland-SOF Sofia

39h 46m2 stops San Francisco Zurich

3:00 pm - 10:43 pmSOF Sofia-PDX Portland

41h 43m2 stops Zurich San Francisco

$636SWISS

Tue, Jan 12 - Mon, Feb 1

11:30 pm - 1:15 pmPDX Portland-SOF Sofia

27h 45m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:00 am - 11:08 pmSOF Sofia-PDX Portland

27h 08m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl

$641United Airlines

Sun, Nov 22 - Thu, Dec 3

3:30 pm - 10:55 pmPDX Portland-SOF Sofia

21h 25m2 stops San Francisco Munich Franz Josef Strauss

2:00 pm - 6:20 pmSOF Sofia-PDX Portland

38h 20m2 stops Munich Franz Josef Strauss San Francisco

$651Lufthansa

Sun, Jan 10 - Tue, Feb 2

3:30 pm - 10:55 pmPDX Portland-SOF Sofia

21h 25m2 stops San Francisco Munich Franz Josef Strauss

2:00 pm - 6:20 pmSOF Sofia-PDX Portland

38h 20m2 stops Munich Franz Josef Strauss San Francisco

$651Lufthansa

Wed, Jan 6 - Tue, Feb 2

4:05 pm - 10:55 pmPDX Portland-SOF Sofia

44h 50m3 stops Denver Intl Chicago O'Hare Intl Munich Franz Josef Strauss

6:00 am - 9:40 amSOF Sofia-PDX Portland

37h 40m2 stops Munich Franz Josef Strauss Denver Intl

$709United Airlines

Sat, Jan 9 - Sat, Jan 30

7:30 am - 10:55 pmPDX Portland-SOF Sofia

29h 25m2 stops San Francisco Munich Franz Josef Strauss

6:25 am - 6:39 pmSOF Sofia-PDX Portland

22h 14m2 stops Frankfurt am Main Chicago O'Hare Intl

$722United Airlines

Thu, Jan 7 - Sat, Jan 30

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SWISS flights from Portland to Sofia

Our best SWISS deals on Portland to Sofia flight tickets

SWISS

Jan 12

PDX1:39 pmPortland

39h 46m

2 stops

SOF3:25 pmSofia

Feb 1

SOF3:00 pmSofia

41h 43m

2 stops

PDX10:43 pmPortland

$636

SWISS

Sep 15

PDX1:03 pmPortland

35h 17m

2 stops

SOF10:20 amSofia

Sep 22

SOF1:05 pmSofia

43h 47m

3 stops

PDX10:52 pmPortland

$1,248

SWISS

Sep 22

PDX1:03 pmPortland

35h 17m

2 stops

SOF10:20 amSofia

Oct 12

SOF3:40 pmSofia

40h 43m

3 stops

PDX10:23 pmPortland

$1,260

Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets

Lufthansa

Jan 13

PDX7:01 amPortland

25h 19m

2 stops

SOF6:20 pmSofia

Jan 29

SOF6:25 amSofia

26h 18m

2 stops

PDX10:43 pmPortland

$633

Lufthansa

Jan 6

PDX3:30 pmPortland

21h 25m

2 stops

SOF10:55 pmSofia

Jan 29

SOF2:00 pmSofia

38h 20m

2 stops

PDX6:20 pmPortland

$651

Lufthansa

Jan 6

PDX7:01 amPortland

29h 54m

2 stops

SOF10:55 pmSofia

Jan 27

SOF6:00 amSofia

46h 39m

2 stops

PDX6:39 pmPortland

$652

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 1/10

2:35 pm-6:20 pm

2 stops17h 45m

Sofia

Fri 1/29

6:25 am-6:31 pm

2 stops22h 06m

$627

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sat 10/10

3:30 pm-11:00 pm

2 stops45h 30m

Sofia

Thu 11/5

6:00 am-6:31 pm

2 stops22h 31m

$631

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 1/13

7:01 am-6:20 pm

2 stops25h 19m

Sofia

Fri 1/29

6:25 am-10:43 pm

2 stops26h 18m

$633

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Tue 1/12

1:39 pm-3:25 pm

2 stops39h 46m

Sofia

Thu 1/28

4:15 pm-10:43 pm

2 stops40h 28m

$636

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Tue 1/12

1:39 pm-3:25 pm

2 stops39h 46m

Sofia

Mon 2/1

3:00 pm-10:43 pm

2 stops41h 43m

$636

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 11/22

11:30 pm-1:15 pm

2 stops27h 45m

Sofia

Thu 12/3

6:00 am-11:08 pm

2 stops27h 08m

$641

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 1/10

3:30 pm-10:55 pm

2 stops21h 25m

Sofia

Tue 2/2

2:00 pm-6:20 pm

2 stops38h 20m

$651

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 1/6

3:30 pm-10:55 pm

2 stops21h 25m

Sofia

Tue 2/2

2:00 pm-6:20 pm

2 stops38h 20m

$651

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sat 1/9

4:05 pm-10:55 pm

3 stops44h 50m

Sofia

Sat 1/30

6:00 am-9:40 am

2 stops37h 40m

$709

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Thu 1/7

7:30 am-10:55 pm

2 stops29h 25m

Sofia

Sat 1/30

6:25 am-6:39 pm

2 stops22h 14m

$722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

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

Prices

Airlines

What is the typical price of a round-trip flight between Portland and Sofia?

Prices are currently low for flights on this route.

Typical prices usually range from $834 to $1,047.
The lowest price recently found on this route was $627.

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Portland is in October. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Sofia from Portland during April instead. Flights to Sofia in April, while not as cheap as those in October, still average around $595.

Can stopping save me money on Portland to Sofia flights?

You could potentially save up to 26% 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

Best Price Found	$331
Fastest flight time	17h 10m
Direct flights	None

The best one-way flight to Sofia from Portland in the past 72 hours is $331. The best round-trip flight deal from Portland to Sofia found on momondo in the last 72 hours is $627.

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.

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. 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?
As of September 2026, there are 3 operators available to choose from 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?
Based on momondo bookings for flights between Portland and Sofia, the leading airline is KLM, making up 53% of the total bookings. Other popular airlines include United Airlines with 32% and Lufthansa with 15%.

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
KLM	PriceFrom $555	Free Cancellation	Rating 7.8 1,579 reviews	Search KLM flights
Lufthansa	PriceFrom $555	Free Cancellation	Rating 6.8 8,221 reviews	Search Lufthansa flights
United Airlines	PriceFrom $666	Free Cancellation	Rating 7.4 10,211 reviews	Search United Airlines flights

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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Cheap flights from Portland to Sofia from $331

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 10/10. 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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SWISS flights from Portland to Sofia

Our best SWISS deals on Portland to Sofia flight tickets

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Our best Lufthansa deals on Portland to Sofia flight tickets

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How to get the cheapest flight ticket from Portland to Sofia

What is the typical price of a round-trip flight between Portland and Sofia?

What is the cheapest month to fly to Sofia?

Can stopping save me money on Portland to Sofia flights?

What is the cheapest airline that flies from Portland to Sofia?

What airlines fly to Sofia?

When to book flights from Portland to Sofia

Cheap Portland to Sofia (PDX to SOF) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Sofia?

Why use momondo?

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

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List of cabin classes available on flights landing in Sofia. Availability may vary depending on flight origin and airline.

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