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Cheap flights from Portland to Sofia from $828

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Sofia departing on 9/13. 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

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Find the cheapest flights from Portland to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
11:17 pm - 12:10 pm
PDX
-
SOF
26h 53m
2 stops
Lufthansa Logo
6:10 am - 9:31 am
SOF
-
PDX
37h 21m
2 stops
$828Lufthansa
Sun, Sep 13 - Fri, Oct 9
Lufthansa Logo
7:00 am - 11:15 pm
PDX
-
SOF
30h 15m
2 stops
Lufthansa Logo
6:20 am - 10:52 pm
SOF
-
PDX
26h 32m
2 stops
$831Lufthansa
Mon, Aug 10 - Wed, Sep 2
Lufthansa Logo
2:27 pm - 11:15 pm
PDX
-
SOF
22h 48m
2 stops
Lufthansa Logo
6:10 am - 9:05 pm
SOF
-
PDX
24h 55m
2 stops
$832Lufthansa
Tue, Aug 18 - Tue, Sep 1
Multiple Airlines Logo
4:05 pm - 11:15 pm
PDX
-
SOF
21h 10m
2 stops
Multiple Airlines Logo
6:10 am - 2:51 pm
SOF
-
PDX
42h 41m
2 stops
$834Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
KLM Logo
11:17 am - 2:00 pm
PDX
-
SOF
16h 43m
2 stops
KLM Logo
7:00 am - 11:10 am
SOF
-
PDX
14h 10m
1 stop
$835KLM
Tue, Aug 18 - Tue, Sep 1
Lufthansa Logo
2:27 pm - 12:10 pm
PDX
-
SOF
35h 43m
2 stops
Lufthansa Logo
6:10 am - 10:23 pm
SOF
-
PDX
26h 13m
2 stops
$838Lufthansa
Sat, Sep 12 - Fri, Oct 9
Air Canada Logo
3:30 pm - 6:00 pm
PDX
-
SOF
40h 30m
2 stops
Air Canada Logo
6:20 am - 9:31 am
SOF
-
PDX
37h 11m
2 stops
$840Air Canada
Sun, Sep 13 - Fri, Oct 9
Multiple Airlines Logo
7:45 pm - 6:00 pm
PDX
-
SOF
36h 15m
2 stops
Multiple Airlines Logo
6:10 am - 7:06 pm
SOF
-
PDX
22h 56m
3 stops
$864Multiple Airlines
Sun, Sep 13 - 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
$880KLM
Tue, Aug 18 - Tue, Sep 1
Multiple Airlines Logo
7:45 pm - 6:00 pm
PDX
-
SOF
36h 15m
2 stops
Multiple Airlines Logo
6:10 am - 7:06 pm
SOF
-
PDX
22h 56m
3 stops
$914Multiple Airlines
Sun, Sep 13 - Fri, Oct 9

KLM flights from Portland to Sofia

Our best KLM deals on Portland to Sofia flight tickets
KLM
Aug 18
PDX11:17 amPortland
16h 43m
2 stops
SOF2:00 pmSofia
Sep 1
SOF7:00 amSofia
14h 10m
1 stop
PDX11:10 amPortland
$835
KLM
Aug 18
PDX1:05 pmPortland
14h 55m
1 stop
SOF2:00 pmSofia
Sep 1
SOF7:00 amSofia
14h 10m
1 stop
PDX11:10 amPortland
$880
KLM
Sep 13
PDX1:05 pmPortland
14h 55m
1 stop
SOF2:00 pmSofia
Oct 9
SOF7:00 amSofia
14h 10m
1 stop
PDX11:10 amPortland
$917

Air Canada flights from Portland to Sofia

Our best Air Canada deals on Portland to Sofia flight tickets
Air Canada
Sep 13
PDX3:30 pmPortland
40h 30m
2 stops
SOF6:00 pmSofia
Oct 9
SOF6:20 amSofia
37h 11m
2 stops
PDX9:31 amPortland
$840
Air Canada
Sep 1
PDX10:10 amPortland
21h 50m
2 stops
SOF6:00 pmSofia
Sep 15
SOF6:10 amSofia
22h 56m
3 stops
PDX7:06 pmPortland
$969
Air Canada
Aug 25
PDX7:45 pmPortland
36h 20m
2 stops
SOF6:05 pmSofia
Sep 8
SOF6:10 amSofia
22h 56m
3 stops
PDX7:06 pmPortland
$1,061

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 5, 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

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 9/13

11:17 pm-12:10 pm

2 stops26h 53m

Sofia

Fri 10/9

6:10 am-9:31 am

2 stops37h 21m

$828

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 8/10

7:00 am-11:15 pm

2 stops30h 15m

Sofia

Wed 9/2

6:20 am-10:52 pm

2 stops26h 32m

$831

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 8/18

2:27 pm-11:15 pm

2 stops22h 48m

Sofia

Tue 9/1

6:10 am-9:05 pm

2 stops24h 55m

$832

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 9/1

4:05 pm-11:15 pm

2 stops21h 10m

Sofia

Tue 9/15

6:10 am-2:51 pm

2 stops42h 41m

$834

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 8/18

11:17 am-2:00 pm

2 stops16h 43m

Sofia

Tue 9/1

7:00 am-11:10 am

1 stop14h 10m

$835

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sat 9/12

2:27 pm-12:10 pm

2 stops35h 43m

Sofia

Fri 10/9

6:10 am-10:23 pm

2 stops26h 13m

$838

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 9/13

3:30 pm-6:00 pm

2 stops40h 30m

Sofia

Fri 10/9

6:20 am-9:31 am

2 stops37h 11m

$840

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 9/13

7:45 pm-6:00 pm

2 stops36h 15m

Sofia

Fri 10/9

6:10 am-7:06 pm

3 stops22h 56m

$864
Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Tue 8/18

1:05 pm-2:00 pm

1 stop14h 55m

Sofia

Tue 9/1

7:00 am-11:10 am

1 stop14h 10m

$880

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 9/13

7:45 pm-6:00 pm

2 stops36h 15m

Sofia

Fri 10/9

6:10 am-7:06 pm

3 stops22h 56m

$914

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Sofia from

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.

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

17h 10m

Direct flights

None
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.
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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?

  • 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
1,524 reviews
Search KLM flights
LufthansaPriceFrom $635Free CancellationRating
6.8
8,036 reviews
Search Lufthansa flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,779 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