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 54% 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 is the most popular carrier 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 March 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.

$433 Cheap Flights from Portland to Sofia in 2026

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

Prices are currently high for flights on this route. Typical prices usually range from $745 to $636. The lowest price recently found on this route was $750.

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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.

2:15 pm - 6:40 pm

PDX

SOF

18h 25m

2 stops

6:20 am - 6:11 pm

SOF

PDX

21h 51m

2 stops

$750Lufthansa

Sun, Aug 16 - Wed, Aug 26

11:09 am - 11:15 pm

PDX

SOF

26h 06m

2 stops

6:20 am - 8:50 pm

SOF

PDX

24h 30m

2 stops

$757Lufthansa

Mon, Aug 17 - Wed, Aug 26

7:30 pm - 8:30 pm

PDX

SOF

15h 00m

1 stop

9:25 pm - 9:57 pm

SOF

PDX

34h 32m

2 stops

$759British Airways

Tue, Aug 25 - Wed, Sep 16

8:29 am - 12:10 pm

PDX

SOF

17h 41m

2 stops

11:05 am - 7:06 pm

SOF

PDX

18h 01m

2 stops

$761Multiple Airlines

Mon, Aug 24 - Wed, Sep 16

8:29 am - 12:10 pm

PDX

SOF

17h 41m

2 stops

6:30 am - 2:51 pm

SOF

PDX

18h 21m

2 stops

$765Multiple Airlines

Mon, Aug 24 - Thu, Sep 17

2:15 pm - 6:40 pm

PDX

SOF

18h 25m

2 stops

7:25 pm - 8:55 pm

SOF

PDX

35h 30m

2 stops

$769Lufthansa

Sun, Aug 16 - Mon, Aug 24

7:00 am - 6:40 pm

PDX

SOF

25h 40m

2 stops

6:20 am - 7:06 pm

SOF

PDX

22h 46m

2 stops

$772United Airlines

Sun, Aug 23 - Wed, Sep 16

7:00 am - 6:40 pm

PDX

SOF

25h 40m

2 stops

6:20 am - 12:47 am

SOF

PDX

28h 27m

3 stops

$775United Airlines

Sun, Aug 23 - Wed, Sep 16

8:29 am - 6:40 pm

PDX

SOF

24h 11m

2 stops

6:10 am - 12:47 am

SOF

PDX

28h 37m

2 stops

$782Lufthansa

Thu, Aug 13 - Tue, Aug 25

11:15 pm - 11:00 am

PDX

SOF

25h 45m

2 stops

6:20 am - 2:51 pm

SOF

PDX

18h 31m

2 stops

$784United Airlines

Sat, Aug 22 - Fri, Sep 18

Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets

Lufthansa

Aug 16

PDX2:15 pmPortland

18h 25m

2 stops

SOF6:40 pmSofia

Aug 26

SOF6:20 amSofia

21h 51m

2 stops

PDX6:11 pmPortland

$750

Lufthansa

Aug 17

PDX11:09 amPortland

26h 06m

2 stops

SOF11:15 pmSofia

Aug 26

SOF6:20 amSofia

24h 30m

2 stops

PDX8:50 pmPortland

$757

Lufthansa

Aug 16

PDX2:15 pmPortland

18h 25m

2 stops

SOF6:40 pmSofia

Aug 24

SOF7:25 pmSofia

35h 30m

2 stops

PDX8:55 pmPortland

$769

SWISS flights from Portland to Sofia

Our best SWISS deals on Portland to Sofia flight tickets

SWISS

Aug 18

PDX7:00 amPortland

41h 20m

2 stops

SOF10:20 amSofia

Aug 27

SOF11:05 amSofia

46h 04m

2 stops

PDX11:09 pmPortland

$786

SWISS

Aug 20

PDX7:00 amPortland

43h 55m

2 stops

SOF12:55 pmSofia

Aug 27

SOF11:05 amSofia

46h 04m

2 stops

PDX11:09 pmPortland

$811

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/16

2:15 pm-6:40 pm

2 stops18h 25m

Sofia

Wed 8/26

6:20 am-6:11 pm

2 stops21h 51m

$750

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 8/17

11:09 am-11:15 pm

2 stops26h 06m

Sofia

Wed 8/26

6:20 am-8:50 pm

2 stops24h 30m

$757

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 8/25

7:30 pm-8:30 pm

1 stop15h 00m

Sofia

Wed 9/16

9:25 pm-9:57 pm

2 stops34h 32m

$759

Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 8/24

8:29 am-12:10 pm

2 stops17h 41m

Sofia

Wed 9/16

11:05 am-7:06 pm

2 stops18h 01m

$761

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 8/24

8:29 am-12:10 pm

2 stops17h 41m

Sofia

Thu 9/17

6:30 am-2:51 pm

2 stops18h 21m

$765

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/16

2:15 pm-6:40 pm

2 stops18h 25m

Sofia

Mon 8/24

7:25 pm-8:55 pm

2 stops35h 30m

$769

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/23

7:00 am-6:40 pm

2 stops25h 40m

Sofia

Wed 9/16

6:20 am-7:06 pm

2 stops22h 46m

$772

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 8/23

7:00 am-6:40 pm

2 stops25h 40m

Sofia

Wed 9/16

6:20 am-12:47 am

3 stops28h 27m

$775

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 8/13

8:29 am-6:40 pm

2 stops24h 11m

Sofia

Tue 8/25

6:10 am-12:47 am

2 stops28h 37m

$782

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 8/22

11:15 pm-11:00 am

2 stops25h 45m

Sofia

Fri 9/18

6:20 am-2:51 pm

2 stops18h 31m

$784

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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?

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Portland is in March. Flight prices, which tend to average around $684, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Sofia from Portland during May instead. Flights to Sofia in May, while not as cheap as those in March, still average around $687.

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	18h 25m
Direct flights	None

The fastest flight from Portland to Sofia takes 18h 25m

There are no direct flights from Portland to Sofia. There are no popular flight routes from Portland to Sofia.

Search flight deals

How far is Portland to Sofia by plane?
A flight from Portland to Sofia will travel around 5988.5 mi. 18h 25m 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 March 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 54% of the total bookings. Other popular airlines include United Airlines with 30% and Lufthansa with 16%.

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 1,478 reviews	Search KLM flights
Lufthansa	PriceFrom $635	Free Cancellation	Rating 6.8 7,867 reviews	Search Lufthansa flights
United Airlines	PriceFrom $639	Free Cancellation	Rating 7.4 9,477 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 $433

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 4/15. 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

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Our best SWISS 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?

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

Find info about flight duration, direct flights, and airports for your flight from Portland to Sofia

Fastest flight time

Direct flights

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

Fly your favorite airline to Sofia

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Cabin classes currently available on flights to Sofia

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

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