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 52% 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?

Lufthansa 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 November 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.

$339 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.

5:30 pm - 10:55 pmPDX Portland-SOF Sofia

19h 25m2 stops San Francisco Munich Franz Josef Strauss

7:05 pm - 8:45 pmSOF Sofia-PDX Portland

34h 40m2 stops Munich Franz Josef Strauss Vancouver Intl

$719Lufthansa

Wed, Mar 3 - Mon, Mar 15

3:15 pm - 6:45 pmPDX Portland-SOF Sofia

17h 30m2 stops Vancouver Intl Munich Franz Josef Strauss

6:00 am - 9:25 amSOF Sofia-PDX Portland

37h 25m2 stops Munich Franz Josef Strauss Vancouver Intl

$734Air Canada

Mon, Apr 19 - Fri, Apr 23

12:40 pm - 11:05 pmPDX Portland-SOF Sofia

24h 25m2 stops Denver Intl Munich Franz Josef Strauss

6:20 am - 8:33 pmSOF Sofia-PDX Portland

24h 13m3 stops Frankfurt am Main Chicago O'Hare Intl San Francisco

$744United Airlines

Mon, Apr 19 - Fri, Apr 23

7:30 am - 11:05 pmPDX Portland-SOF Sofia

29h 35m2 stops San Francisco Munich Franz Josef Strauss

1:55 pm - 12:54 amSOF Sofia-PDX Portland

20h 59m2 stops Frankfurt am Main San Francisco

$745United Airlines

Sun, Apr 25 - Thu, Apr 29

7:03 am - 1:25 pmPDX Portland-SOF Sofia

20h 22m2 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

$787United Airlines

Wed, Mar 3 - Mon, Mar 15

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

28h 09m2 stops San Francisco Munich Franz Josef Strauss

2:00 pm - 8:45 pmSOF Sofia-PDX Portland

40h 45m2 stops Munich Franz Josef Strauss San Francisco

$810Lufthansa

Mon, Jan 4 - Tue, Jan 12

8:50 am - 10:55 pmPDX Portland-SOF Sofia

28h 05m2 stops Denver Intl Munich Franz Josef Strauss

3:00 pm - 8:45 pmSOF Sofia-PDX Portland

39h 45m2 stops Zurich San Francisco

$849Multiple Airlines

Fri, Jan 1 - Mon, Jan 11

2:45 pm - 12:00 pmPDX Portland-SOF Sofia

35h 15m3 stops Reykjavik Keflavik Intl Frankfurt am Main Istanbul Sabiha Gokcen

4:00 pm - 5:00 pmSOF Sofia-PDX Portland

35h 00m3 stops Belgrade Nikola Tesla Frankfurt am Main Reykjavik Keflavik Intl

$882Multiple Airlines

Mon, Dec 7 - Sun, Dec 13

3:05 pm - 6:45 pmPDX Portland-SOF Sofia

17h 40m2 stops Vancouver Intl Munich Franz Josef Strauss

1:05 pm - 10:31 pmSOF Sofia-PDX Portland

19h 26m2 stops Munich Franz Josef Strauss Vancouver Intl

$1,031Lufthansa

Thu, May 13 - Fri, Jun 25

3:05 pm - 6:45 pmPDX Portland-SOF Sofia

17h 40m2 stops Vancouver Intl Munich Franz Josef Strauss

1:05 pm - 10:31 pmSOF Sofia-PDX Portland

19h 26m2 stops Munich Franz Josef Strauss Vancouver Intl

$1,051Lufthansa

Thu, May 13 - Sat, Jun 26

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Lufthansa flights from Portland to Sofia

Our best Lufthansa deals on Portland to Sofia flight tickets

Lufthansa

Mar 3

PDX5:30 pmPortland

19h 25m

2 stops

SOF10:55 pmSofia

Mar 15

SOF7:05 pmSofia

34h 40m

2 stops

PDX8:45 pmPortland

$719

Lufthansa

Jan 4

PDX8:46 amPortland

28h 09m

2 stops

SOF10:55 pmSofia

Jan 12

SOF2:00 pmSofia

40h 45m

2 stops

PDX8:45 pmPortland

$810

Lufthansa

May 13

PDX3:05 pmPortland

17h 40m

2 stops

SOF6:45 pmSofia

Jun 25

SOF1:05 pmSofia

19h 26m

2 stops

PDX10:31 pmPortland

$1,031

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets

United Airlines

Apr 19

PDX12:40 pmPortland

24h 25m

2 stops

SOF11:05 pmSofia

Apr 23

SOF6:20 amSofia

24h 13m

3 stops

PDX8:33 pmPortland

$744

United Airlines

Apr 25

PDX7:30 amPortland

29h 35m

2 stops

SOF11:05 pmSofia

Apr 29

SOF1:55 pmSofia

20h 59m

2 stops

PDX12:54 amPortland

$745

United Airlines

Mar 3

PDX7:03 amPortland

20h 22m

2 stops

SOF1:25 pmSofia

Mar 15

SOF2:10 pmSofia

39h 23m

3 stops

PDX8:33 pmPortland

$787

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 3/3

5:30 pm-10:55 pm

2 stops19h 25m

Sofia

Mon 3/15

7:05 pm-8:45 pm

2 stops34h 40m

$719

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 4/19

3:15 pm-6:45 pm

2 stops17h 30m

Sofia

Fri 4/23

6:00 am-9:25 am

2 stops37h 25m

$734

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 4/19

12:40 pm-11:05 pm

2 stops24h 25m

Sofia

Fri 4/23

6:20 am-8:33 pm

3 stops24h 13m

$744

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 4/25

7:30 am-11:05 pm

2 stops29h 35m

Sofia

Thu 4/29

1:55 pm-12:54 am

2 stops20h 59m

$745

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 3/3

7:03 am-1:25 pm

2 stops20h 22m

Sofia

Mon 3/15

2:10 pm-8:33 pm

3 stops39h 23m

$787

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 1/4

8:46 am-10:55 pm

2 stops28h 09m

Sofia

Tue 1/12

2:00 pm-8:45 pm

2 stops40h 45m

$810

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Fri 1/1

8:50 am-10:55 pm

2 stops28h 05m

Sofia

Mon 1/11

3:00 pm-8:45 pm

2 stops39h 45m

$849

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Mon 12/7

2:45 pm-12:00 pm

3 stops35h 15m

Sofia

Sun 12/13

4:00 pm-5:00 pm

3 stops35h 00m

$882

Quickest round-trip

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Thu 5/13

3:05 pm-6:45 pm

2 stops17h 40m

Sofia

Fri 6/25

1:05 pm-10:31 pm

2 stops19h 26m

$1,031

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Thu 5/13

3:05 pm-6:45 pm

2 stops17h 40m

Sofia

Sat 6/26

1:05 pm-10:31 pm

2 stops19h 26m

$1,051

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 January. 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 January, then book flights to Sofia from Portland during April instead. Flights to Sofia in April, while not as cheap as those in January, still average around $595.

Can stopping save me money on Portland to Sofia flights?

You could potentially save up to 7% 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	$339
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Sofia from Portland in the past 72 hours is $339. The best round-trip flight deal from Portland to Sofia found on momondo in the last 72 hours is $719.

The fastest flight from Portland to Sofia takes 19h 25m

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. 19h 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 November 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 52% of the total bookings. Other popular airlines include United Airlines with 32% 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 1,599 reviews	Search KLM flights
Lufthansa	PriceFrom $555	Free Cancellation	Rating 6.8 8,294 reviews	Search Lufthansa flights
United Airlines	PriceFrom $638	Free Cancellation	Rating 7.3 10,486 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 $339

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 3/3. 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

United Airlines flights from Portland to Sofia

Our best United Airlines 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

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

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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