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?

Air Canada and SWISS 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.

$400 Cheap Flights from Portland to Sofia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Sofia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

21h 25m2 stops San Francisco Munich Franz Josef Strauss

3:00 pm - 8:33 pmSOF Sofia-PDX Portland

39h 33m2 stops Zurich San Francisco

$721Multiple Airlines

Mon, Mar 1 - Mon, Mar 8

10:47 am - 10:55 pmPDX Portland-SOF Sofia

26h 08m2 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

$733United Airlines

Mon, Jan 11 - Thu, Jan 14

7:01 am - 1:15 pmPDX Portland-SOF Sofia

20h 14m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:25 am - 11:18 pmSOF Sofia-PDX Portland

26h 53m2 stops Frankfurt am Main Houston George Bush Intcntl

$734United Airlines

Mon, Jan 11 - Thu, Jan 14

8:46 am - 1:15 pmPDX Portland-SOF Sofia

19h 29m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

2:00 pm - 8:33 pmSOF Sofia-PDX Portland

39h 33m2 stops Munich Franz Josef Strauss San Francisco

$745United Airlines

Wed, Mar 17 - Mon, Mar 22

2:30 pm - 6:20 pmPDX Portland-SOF Sofia

17h 50m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

2:00 pm - 12:54 amSOF Sofia-PDX Portland

19h 54m2 stops Munich Franz Josef Strauss San Francisco

$762Lufthansa

Wed, Mar 10 - Sat, Mar 20

10:00 am - 6:20 pmPDX Portland-SOF Sofia

22h 20m2 stops Vancouver Intl Munich Franz Josef Strauss

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

22h 31m2 stops Munich Franz Josef Strauss Vancouver Intl

$772Multiple Airlines

Tue, Nov 10 - Tue, Nov 17

7:00 am - 1:25 pmPDX Portland-SOF Sofia

21h 25m2 stops Chicago O'Hare Intl Frankfurt am Main

2:10 pm - 8:33 pmSOF Sofia-PDX Portland

39h 23m3 stops Frankfurt am Main Chicago O'Hare Intl San Francisco

$777Multiple Airlines

Wed, Mar 17 - Mon, Mar 22

8:46 am - 10:55 pmPDX Portland-SOF Sofia

28h 09m3 stops Chicago O'Hare Intl Washington, D.C. Reagan-National Munich Franz Josef Strauss

2:00 pm - 12:54 amSOF Sofia-PDX Portland

19h 54m2 stops Munich Franz Josef Strauss San Francisco

$785United Airlines

Wed, Mar 10 - Sat, Mar 20

7:10 pm - 10:55 pmPDX Portland-SOF Sofia

41h 45m2 stops Vancouver Intl Munich Franz Josef Strauss

6:00 am - 6:30 pmSOF Sofia-PDX Portland

22h 30m3 stops Munich Franz Josef Strauss Frankfurt am Main Vancouver Intl

$792Multiple Airlines

Mon, Mar 1 - Mon, Mar 8

7:49 pm - 10:55 pmPDX Portland-SOF Sofia

18h 06m2 stops San Francisco Munich Franz Josef Strauss

6:25 am - 7:17 pmSOF Sofia-PDX Portland

21h 52m2 stops Frankfurt am Main Chicago O'Hare Intl

$19,529Lufthansa

Sun, Mar 14 - Wed, Mar 17

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Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets

Lufthansa

Mar 10

PDX2:30 pmPortland

17h 50m

2 stops

SOF6:20 pmSofia

Mar 20

SOF2:00 pmSofia

19h 54m

2 stops

PDX12:54 amPortland

$762

Lufthansa

Mar 14

PDX7:49 pmPortland

18h 06m

2 stops

SOF10:55 pmSofia

Mar 17

SOF6:25 amSofia

21h 52m

2 stops

PDX7:17 pmPortland

$19,529

British Airways flights from Portland to Sofia

Our best British Airways deals on Portland to Sofia flight tickets

British Airways

Nov 4

PDX11:57 amPortland

45h 23m

2 stops

SOF7:20 pmSofia

Nov 8

SOF7:45 pmSofia

30h 05m

1 stop

PDX3:50 pmPortland

$901

British Airways

Nov 4

PDX11:57 amPortland

45h 23m

2 stops

SOF7:20 pmSofia

Nov 8

SOF7:45 pmSofia

30h 05m

1 stop

PDX3:50 pmPortland

$902

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 3/1

3:30 pm-10:55 pm

2 stops21h 25m

Sofia

Mon 3/8

3:00 pm-8:33 pm

2 stops39h 33m

$721

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 1/11

10:47 am-10:55 pm

2 stops26h 08m

Sofia

Thu 1/14

6:25 am-10:43 pm

2 stops26h 18m

$733

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 1/11

7:01 am-1:15 pm

2 stops20h 14m

Sofia

Thu 1/14

6:25 am-11:18 pm

2 stops26h 53m

$734

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 3/17

8:46 am-1:15 pm

2 stops19h 29m

Sofia

Mon 3/22

2:00 pm-8:33 pm

2 stops39h 33m

$745

Quickest round-trip

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 3/10

2:30 pm-6:20 pm

2 stops17h 50m

Sofia

Sat 3/20

2:00 pm-12:54 am

2 stops19h 54m

$762

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Tue 11/10

10:00 am-6:20 pm

2 stops22h 20m

Sofia

Tue 11/17

6:00 am-6:31 pm

2 stops22h 31m

$772

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 3/17

7:00 am-1:25 pm

2 stops21h 25m

Sofia

Mon 3/22

2:10 pm-8:33 pm

3 stops39h 23m

$777

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 3/10

8:46 am-10:55 pm

3 stops28h 09m

Sofia

Sat 3/20

2:00 pm-12:54 am

2 stops19h 54m

$785

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 3/1

7:10 pm-10:55 pm

2 stops41h 45m

Sofia

Mon 3/8

6:00 am-6:30 pm

3 stops22h 30m

$792

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 3/14

7:49 pm-10:55 pm

2 stops18h 06m

Sofia

Wed 3/17

6:25 am-7:17 pm

2 stops21h 52m

$19,529

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 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 17% 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	$400
Fastest flight time	17h 46m
Direct flights	None

The best one-way flight to Sofia from Portland in the past 72 hours is $400. The best round-trip flight deal from Portland to Sofia found on momondo in the last 72 hours is $721.

The fastest flight from Portland to Sofia takes 17h 46m

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 46m 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 1,578 reviews	Search KLM flights
Lufthansa	PriceFrom $555	Free Cancellation	Rating 6.8 8,251 reviews	Search Lufthansa flights
United Airlines	PriceFrom $666	Free Cancellation	Rating 7.4 10,256 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 $400

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 3/18. 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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Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets

British Airways flights from Portland to Sofia

Our best British Airways 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 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

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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.

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Fly your favorite airline to Sofia

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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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