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Cheap flights from Portland to Sofia from $266

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 10/12. 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.
Air Canada Logo
3:15 pm - 1:25 pmPDX  Portland-SOF Sofia
36h 10m2 stops Vancouver Intl Frankfurt am Main
Air Canada Logo
6:25 am - 8:46 pmSOF  Sofia-PDX Portland
24h 21m2 stops Frankfurt am Main Vancouver Intl
$749Air Canada
Sun, Jan 31 - Thu, Feb 4
Air Canada Logo
3:15 pm - 1:25 pmPDX  Portland-SOF Sofia
36h 10m2 stops Vancouver Intl Frankfurt am Main
Air Canada Logo
6:25 am - 8:46 pmSOF  Sofia-PDX Portland
24h 21m2 stops Frankfurt am Main Vancouver Intl
$750Air Canada
Sun, Jan 31 - Thu, Feb 4
Multiple Airlines Logo
3:40 pm - 10:55 pmPDX  Portland-SOF Sofia
21h 15m2 stops San Francisco Munich Franz Josef Strauss
Multiple Airlines Logo
6:25 am - 8:46 pmSOF  Sofia-PDX Portland
24h 21m2 stops Frankfurt am Main Vancouver Intl
$767Multiple Airlines
Fri, Nov 6 - Fri, Nov 13
Multiple Airlines Logo
2:34 pm - 10:55 pmPDX  Portland-SOF Sofia
22h 21m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Multiple Airlines Logo
6:25 am - 8:46 pmSOF  Sofia-PDX Portland
24h 21m2 stops Frankfurt am Main Vancouver Intl
$783Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
United Airlines Logo
8:40 am - 1:15 pmPDX  Portland-SOF Sofia
18h 35m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
6:25 am - 12:44 amSOF  Sofia-PDX Portland
28h 19m3 stops Frankfurt am Main Atlanta Hartsfield-Jackson San Francisco
$801United Airlines
Fri, Nov 6 - Fri, Nov 13
Lufthansa Logo
7:30 am - 10:55 pmPDX  Portland-SOF Sofia
29h 25m2 stops San Francisco Munich Franz Josef Strauss
Lufthansa Logo
6:00 am - 11:12 pmSOF  Sofia-PDX Portland
27h 12m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$814Lufthansa
Fri, Dec 11 - Fri, Jan 8
United Airlines Logo
10:50 am - 11:15 pmPDX  Portland-SOF Sofia
26h 25m2 stops Denver Intl Munich Franz Josef Strauss
United Airlines Logo
2:10 pm - 12:34 amSOF  Sofia-PDX Portland
20h 24m2 stops Frankfurt am Main San Francisco
$842United Airlines
Sun, Sep 13 - Fri, Oct 9
Lufthansa Logo
3:40 pm - 10:55 pmPDX  Portland-SOF Sofia
21h 15m2 stops San Francisco Munich Franz Josef Strauss
Lufthansa Logo
6:25 am - 6:24 pmSOF  Sofia-PDX Portland
21h 59m2 stops Frankfurt am Main San Francisco
$843Lufthansa
Wed, Nov 4 - Sun, Nov 8
Lufthansa Logo
2:27 pm - 6:10 pmPDX  Portland-SOF Sofia
41h 43m2 stops Chicago O'Hare Intl Frankfurt am Main
Lufthansa Logo
7:00 pm - 7:11 pmSOF  Sofia-PDX Portland
34h 11m2 stops Frankfurt am Main Vancouver Intl
$891Lufthansa
Sat, Sep 19 - Mon, Sep 28
United Airlines Logo
4:07 pm - 6:40 pmPDX  Portland-SOF Sofia
40h 33m2 stops Denver Intl Munich Franz Josef Strauss
United Airlines Logo
2:20 pm - 8:10 pmSOF  Sofia-PDX Portland
39h 50m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$898United Airlines
Sat, Sep 19 - Mon, Sep 28

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Air Canada flights from Portland to Sofia

Our best Air Canada deals on Portland to Sofia flight tickets
Air Canada
Jan 31
PDX3:15 pmPortland
36h 10m
2 stops
SOF1:25 pmSofia
Feb 4
SOF6:25 amSofia
24h 21m
2 stops
PDX8:46 pmPortland
$749
Air Canada
Jan 31
PDX3:15 pmPortland
36h 10m
2 stops
SOF1:25 pmSofia
Feb 4
SOF6:25 amSofia
24h 21m
2 stops
PDX8:46 pmPortland
$750
Air Canada
Nov 4
PDX10:00 amPortland
22h 20m
3 stops
SOF6:20 pmSofia
Nov 8
SOF6:25 amSofia
22h 06m
2 stops
PDX6:31 pmPortland
$821

United Airlines flights from Portland to Sofia

Our best United Airlines deals on Portland to Sofia flight tickets
United Airlines
Nov 6
PDX8:40 amPortland
18h 35m
2 stops
SOF1:15 pmSofia
Nov 13
SOF6:25 amSofia
28h 19m
3 stops
PDX12:44 amPortland
$801
United Airlines
Sep 13
PDX10:50 amPortland
26h 25m
2 stops
SOF11:15 pmSofia
Oct 9
SOF2:10 pmSofia
20h 24m
2 stops
PDX12:34 amPortland
$842
United Airlines
Sep 19
PDX4:07 pmPortland
40h 33m
2 stops
SOF6:40 pmSofia
Sep 28
SOF2:20 pmSofia
42h 37m
3 stops
PDX10:57 pmPortland
$898

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 August 8, 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 Portland - SOF Sofia

PDXSOF

Portland

Sun 1/31

3:15 pm-1:25 pm

2 stops36h 10m

Sofia

Thu 2/4

6:25 am-8:46 pm

2 stops24h 21m

$749

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 1/31

3:15 pm-1:25 pm

2 stops36h 10m

Sofia

Thu 2/4

6:25 am-8:46 pm

2 stops24h 21m

$750

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Fri 11/6

3:40 pm-10:55 pm

2 stops21h 15m

Sofia

Fri 11/13

6:25 am-8:46 pm

2 stops24h 21m

$767

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 11/4

2:34 pm-10:55 pm

2 stops22h 21m

Sofia

Sun 11/8

6:25 am-8:46 pm

2 stops24h 21m

$783

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Fri 11/6

8:40 am-1:15 pm

2 stops18h 35m

Sofia

Fri 11/13

6:25 am-12:44 am

3 stops28h 19m

$801

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Fri 12/11

7:30 am-10:55 pm

2 stops29h 25m

Sofia

Fri 1/8

6:00 am-11:12 pm

2 stops27h 12m

$814

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sun 9/13

10:50 am-11:15 pm

2 stops26h 25m

Sofia

Fri 10/9

2:10 pm-12:34 am

2 stops20h 24m

$842
Quickest round-trip

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Wed 11/4

3:40 pm-10:55 pm

2 stops21h 15m

Sofia

Sun 11/8

6:25 am-6:24 pm

2 stops21h 59m

$843

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sat 9/19

2:27 pm-6:10 pm

2 stops41h 43m

Sofia

Mon 9/28

7:00 pm-7:11 pm

2 stops34h 11m

$891

PortlandSofia

PDX Portland - SOF Sofia

PDXSOF

Portland

Sat 9/19

4:07 pm-6:40 pm

2 stops40h 33m

Sofia

Mon 9/28

2:20 pm-8:10 pm

2 stops39h 50m

$898

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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?

Prices are currently low for flights on this route.

Typical prices usually range from $937 to $1,152.
The lowest price recently found on this route was $749.

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 39% 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

21h 15m

Direct flights

None
The fastest flight from Portland to Sofia takes 21h 15m
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. 21h 15m 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
1,555 reviews
Search KLM flights
LufthansaPriceFrom $555Free CancellationRating
6.8
8,177 reviews
Search Lufthansa flights
United AirlinesPriceFrom $674Free CancellationRating
7.4
10,088 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