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Cheap flights from Portland to Sofia from $614

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 7/1. 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.
KLM Logo
1:05 pm - 2:00 pm
PDX
-
SOF
14h 55m
1 stop
KLM Logo
7:00 am - 11:10 am
SOF
-
PDX
14h 10m
1 stop
$829KLM
Wed, Sep 2 - Wed, Sep 16
United Airlines Logo
10:35 am - 11:15 pm
PDX
-
SOF
26h 40m
2 stops
United Airlines Logo
6:10 am - 7:06 pm
SOF
-
PDX
22h 56m
2 stops
$832United Airlines
Tue, Sep 1 - Tue, Sep 15
Lufthansa Logo
2:27 pm - 12:10 pm
PDX
-
SOF
35h 43m
2 stops
Lufthansa Logo
12:55 pm - 10:23 pm
SOF
-
PDX
19h 28m
2 stops
$838Lufthansa
Sat, Sep 12 - Fri, Oct 9
KLM Logo
1:05 pm - 2:00 pm
PDX
-
SOF
14h 55m
1 stop
KLM Logo
7:00 am - 4:05 pm
SOF
-
PDX
19h 05m
2 stops
$839KLM
Wed, Sep 2 - Wed, Sep 16
United Airlines Logo
8:17 am - 6:05 pm
PDX
-
SOF
23h 48m
2 stops
United Airlines Logo
6:10 am - 10:53 pm
SOF
-
PDX
26h 43m
3 stops
$855United Airlines
Wed, Sep 2 - Wed, Sep 16
United Airlines Logo
2:27 pm - 11:15 pm
PDX
-
SOF
46h 48m
2 stops
United Airlines Logo
12:55 pm - 9:05 pm
SOF
-
PDX
42h 10m
2 stops
$859United Airlines
Mon, Aug 31 - Mon, Sep 14
KLM Logo
9:44 am - 2:00 pm
PDX
-
SOF
18h 16m
2 stops
KLM Logo
7:00 am - 11:10 am
SOF
-
PDX
14h 10m
1 stop
$884KLM
Sat, Sep 12 - Fri, Oct 9
KLM Logo
1:05 pm - 2:00 pm
PDX
-
SOF
14h 55m
1 stop
KLM Logo
7:00 am - 11:10 am
SOF
-
PDX
14h 10m
1 stop
$930KLM
Sat, Sep 12 - Fri, Oct 9
United Airlines Logo
8:35 am - 11:15 pm
PDX
-
SOF
28h 40m
3 stops
United Airlines Logo
2:10 pm - 8:10 pm
SOF
-
PDX
40h 00m
2 stops
$967United Airlines
Thu, Aug 6 - Thu, Aug 13
KLM Logo
1:05 pm - 2:00 pm
PDX
-
SOF
14h 55m
1 stop
KLM Logo
7:00 am - 4:05 pm
SOF
-
PDX
19h 05m
2 stops
$984KLM
Mon, Aug 31 - Mon, Sep 14

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KLM flights from Portland to Sofia

Our best KLM deals on Portland to Sofia flight tickets
KLM
Sep 2
PDX1:05 pmPortland
14h 55m
1 stop
SOF2:00 pmSofia
Sep 16
SOF7:00 amSofia
14h 10m
1 stop
PDX11:10 amPortland
$829
KLM
Sep 2
PDX1:05 pmPortland
14h 55m
1 stop
SOF2:00 pmSofia
Sep 16
SOF7:00 amSofia
19h 05m
2 stops
PDX4:05 pmPortland
$839
KLM
Sep 12
PDX9:44 amPortland
18h 16m
2 stops
SOF2:00 pmSofia
Oct 9
SOF7:00 amSofia
14h 10m
1 stop
PDX11:10 amPortland
$884

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
Sep 1
PDX10:35 amPortland
26h 40m
2 stops
SOF11:15 pmSofia
Sep 15
SOF6:10 amSofia
22h 56m
2 stops
PDX7:06 pmPortland
$832
United Airlines
Sep 2
PDX8:17 amPortland
23h 48m
2 stops
SOF6:05 pmSofia
Sep 16
SOF6:10 amSofia
26h 43m
3 stops
PDX10:53 pmPortland
$855
United Airlines
Aug 31
PDX2:27 pmPortland
46h 48m
2 stops
SOF11:15 pmSofia
Sep 14
SOF12:55 pmSofia
42h 10m
2 stops
PDX9:05 pmPortland
$859

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 23, 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
Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 9/2

1:05 pm-2:00 pm

1 stop14h 55m

Sofia

Wed 9/16

7:00 am-11:10 am

1 stop14h 10m

$829

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 9/1

10:35 am-11:15 pm

2 stops26h 40m

Sofia

Tue 9/15

6:10 am-7:06 pm

2 stops22h 56m

$832

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 9/12

2:27 pm-12:10 pm

2 stops35h 43m

Sofia

Fri 10/9

12:55 pm-10:23 pm

2 stops19h 28m

$838

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 9/2

1:05 pm-2:00 pm

1 stop14h 55m

Sofia

Wed 9/16

7:00 am-4:05 pm

2 stops19h 05m

$839

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 9/2

8:17 am-6:05 pm

2 stops23h 48m

Sofia

Wed 9/16

6:10 am-10:53 pm

3 stops26h 43m

$855

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 8/31

2:27 pm-11:15 pm

2 stops46h 48m

Sofia

Mon 9/14

12:55 pm-9:05 pm

2 stops42h 10m

$859

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 9/12

9:44 am-2:00 pm

2 stops18h 16m

Sofia

Fri 10/9

7:00 am-11:10 am

1 stop14h 10m

$884

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 9/12

1:05 pm-2:00 pm

1 stop14h 55m

Sofia

Fri 10/9

7:00 am-11:10 am

1 stop14h 10m

$930

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 8/6

8:35 am-11:15 pm

3 stops28h 40m

Sofia

Thu 8/13

2:10 pm-8:10 pm

2 stops40h 00m

$967

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 8/31

1:05 pm-2:00 pm

1 stop14h 55m

Sofia

Mon 9/14

7:00 am-4:05 pm

2 stops19h 05m

$984

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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2

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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

26h 25m

Direct flights

None
The fastest flight from Portland to Sofia takes 26h 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. 26h 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?

  • 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
1,530 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
8,086 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,874 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