SOF - PDX

$534 Find Cheap Flights from Sofia to Portland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to Portland departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Portland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Portland, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$948
United Airlines
Mon 3/16Mon 3/23
SOF - PDX • 2 stops
Cheapest one-way
$534
Multiple Airlines
Thu 2/19
SOF - PDX • 3 stops
Top airlines
United Airlines
Cheapest • from $948 (round-trip)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Portland!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sofia to Portland (SOF-PDX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Portland

Mon, Mar 16 - Mon, Mar 23
United Airlines Logo
6:10 am - 5:51 pm
SOF
-
PDX
20h 41m
2 stops
United Airlines Logo
1:00 pm - 6:20 pm
PDX
-
SOF
20h 20m
3 stops
$948United Airlines
Mon, Mar 16 - Mon, Mar 23
KLM Logo
7:00 am - 10:10 pm
SOF
-
PDX
24h 10m
2 stops
KLM Logo
2:25 pm - 2:05 pm
PDX
-
SOF
14h 40m
1 stop
$1,043KLM
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
5:00 am - 6:00 pm
SOF
-
PDX
22h 00m
3 stops
Multiple Airlines Logo
3:45 pm - 11:50 am
PDX
-
SOF
35h 05m
3 stops
$1,083Multiple Airlines
Mon, Mar 16 - Mon, Mar 23
KLM Logo
7:00 am - 12:25 pm
SOF
-
PDX
14h 25m
1 stop
KLM Logo
2:25 pm - 2:05 pm
PDX
-
SOF
14h 40m
1 stop
$1,145KLM
Booking Insights

KAYAK's insights & trends for Sofia to Portland flights

Get data-powered insights and trends into flights from Sofia to Portland to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Sofia to Portland?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Sofia to Portland were found on United Airlines ($948) and KLM ($1,043).

Good to know

Cheapest flight$534
Flight from Sofia to Portland

When to book flights from Sofia to Portland

Are your dates flexible? Find out the best times to travel from Sofia to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sofia to Portland

  • What is the cheapest flight from Sofia to Portland?

    In the last 3 days, the lowest price for a flight from Sofia to Portland was $534 for a one-way ticket and $948 for a round-trip.

  • Do I need a passport to fly between Sofia and Portland?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Sofia and on arrival in Portland.

  • Which aircraft models fly most regularly from Sofia to Portland?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sofia to Portland?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Sofia and Portland, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Sofia to Portland, KLM or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sofia to Portland are KLM and United Airlines. With an average price for the route of $1,072 and an overall rating of 7.7, KLM is the most popular choice. United Airlines is also a great choice for the route, with an average price of $948 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Sofia to Portland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sofia to Portland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sofia to Portland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Sofia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sofia to Portland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to Sofia with another airline. Booking your flights between Sofia and PDX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sofia to Portland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from Sofia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Sofia to Portland

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Portland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sofia to Portland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
KLMOverall score based on 1444 reviews
8.4Crew
7.1Entertainment
7.3Food
7.8Boarding
7.6Comfort
Airline reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

4.0 OkayShereen, Dec 2025
Read more KLM reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

Klm start boarding while somw air issue in the plan

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

This Japanese airline provides great service and very helpful in assisting their passengers.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

I so appreciate the crew members on each flight of United. They are outstanding.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Everything you need to know for your flight from Sofia to Portland

Information on your arrival and departure airports