EWR - SOF

$245 Find Cheap Flights from Newark Liberty Airport to Sofia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Newark to Sofia departing on 3/9. 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 Sofia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Sofia.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Sofia.
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Everything you should know

Cheapest round-trip
$350
Overall average: $639
Multiple Airlines
Mon 3/23Wed 4/15
EWR - SOF • 1 stop
Cheapest one-way
$245
Typical prices: $466-$526
Multiple Airlines
Mon 3/9
EWR - SOF • 1 stop
Top airlines
Austrian Airlines
Cheapest • from $356 (round-trip)
LOT
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 33% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+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 Sofia!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Newark to Sofia (EWR-SOF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark to Sofia 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 Newark to Sofia

Mon, Mar 23 - Wed, Apr 15
Multiple Airlines Logo
9:50 pm - 6:20 pm
EWR
-
SOF
14h 30m
1 stop
Multiple Airlines Logo
8:00 am - 1:55 pm
SOF
-
EWR
12h 55m
1 stop
$350Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
8:50 pm - 10:45 pm
EWR
-
SOF
18h 55m
1 stop
Multiple Airlines Logo
6:45 pm - 3:15 pm
SOF
-
EWR
26h 30m
1 stop
$351Multiple Airlines
Mon, Mar 2 - Mon, Mar 16
Multiple Airlines Logo
8:50 pm - 10:45 pm
EWR
-
SOF
18h 55m
1 stop
Multiple Airlines Logo
6:45 pm - 3:15 pm
SOF
-
EWR
26h 30m
1 stop
$353Multiple Airlines
Tue, Mar 17 - Tue, Mar 31
Multiple Airlines Logo
9:50 pm - 6:20 pm
EWR
-
SOF
14h 30m
1 stop
Multiple Airlines Logo
8:00 am - 1:55 pm
SOF
-
EWR
12h 55m
1 stop
$354Multiple Airlines
Wed, Feb 18 - Mon, Feb 23
Austrian Airlines Logo
5:55 pm - 11:50 am
EWR
-
SOF
10h 55m
1 stop
Austrian Airlines Logo
12:35 pm - 2:15 pm
SOF
-
EWR
32h 40m
1 stop
$356Austrian Airlines
Wed, Mar 4 - Wed, Mar 18
Multiple Airlines Logo
5:55 pm - 11:50 am
EWR
-
SOF
10h 55m
1 stop
Multiple Airlines Logo
2:00 pm - 8:05 pm
SOF
-
EWR
12h 05m
1 stop
$357Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Austrian Airlines Logo
6:55 pm - 11:50 am
EWR
-
SOF
10h 55m
1 stop
Austrian Airlines Logo
6:45 pm - 3:15 pm
SOF
-
EWR
26h 30m
1 stop
$358Austrian Airlines
Mon, Mar 23 - Wed, Apr 15
Multiple Airlines Logo
10:30 am - 1:15 pm
EWR
-
SOF
20h 45m
2 stops
Multiple Airlines Logo
8:00 am - 1:55 pm
SOF
-
EWR
12h 55m
1 stop
$371Multiple Airlines
Wed, Mar 4 - Wed, Mar 18
Multiple Airlines Logo
5:55 pm - 11:55 pm
EWR
-
SOF
23h 00m
1 stop
Multiple Airlines Logo
6:05 am - 9:42 am
SOF
-
EWR
33h 37m
2 stops
$375Multiple Airlines
Tue, Mar 3 - Tue, Mar 17
Multiple Airlines Logo
2:20 pm - 6:20 pm
EWR
-
SOF
21h 00m
2 stops
Multiple Airlines Logo
6:05 am - 8:05 pm
SOF
-
EWR
20h 00m
1 stop
$377Multiple Airlines
Booking Insights

KAYAK's insights & trends for Newark to Sofia flights

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

What is the cheapest month to fly from Newark Airport to Sofia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Newark Airport to Sofia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Newark Airport to Sofia is January, where tickets cost $484 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,111 and $910 respectively.

How far in advance should I book a flight from Newark Airport to Sofia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Newark Airport to Sofia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Newark Airport to Sofia, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$245
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Newark Liberty Airport to Sofia

When to book flights from Newark to Sofia

Are your dates flexible? Find out the best times to travel from Newark to Sofia 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 Newark Liberty Airport to Sofia flights

  • What is the cheapest flight from Newark Airport to Sofia?

    In the last 3 days, the lowest price for a flight from Newark Airport to Sofia was $245 for a one-way ticket and $350 for a round-trip.

  • Do I need a passport to fly between Newark Liberty Airport and Sofia?

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

  • Which airports will I be using when flying from Newark Liberty Airport to Sofia?

    On your way to Sofia, you’ll fly out from Newark. You’ll be landing at Sofia.

  • Which aircraft models fly most regularly from Newark Liberty Airport to Sofia?

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

  • Which airline alliances offer flights from Newark Liberty Airport to Sofia?

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

  • What is the most popular layover when flying to Sofia from Newark Liberty Airport?

    Frankfurt am Main is the most popular layover city among KAYAK users traveling from Newark Liberty Airport to Sofia.

  • Which is the best airline for flights from Newark to Sofia, Austrian Airlines or LOT?

    The two airlines most popular with KAYAK users for flights from Newark to Sofia are Austrian Airlines and LOT. With an average price for the route of $732 and an overall rating of 7.5, Austrian Airlines is the most popular choice. LOT is also a great choice for the route, with an average price of $632 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Newark Liberty Airport to Sofia?

    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 Newark Liberty Airport to Sofia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from Newark Liberty Airport 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 Newark Liberty Airport to Sofia?

    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 Sofia with an airline and back to Newark Liberty Airport with another airline. Booking your flights between Newark Liberty Airport and SOF 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 Newark Liberty Airport to Sofia?

    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 Sofia from Newark Liberty Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Newark to Sofia

 
See real verified KAYAK customer reviews for airlines flying from Newark to Sofia. 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 Newark to Sofia? 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.
7.5
LOTOverall score based on 1175 reviews
7.1Food
8.2Crew
7.5Boarding
7.4Comfort
6.9Entertainment
Airline reviews

Stuck on a plane for 6 hours due to a technical or mechanical issue.

2.0 MediocreJacek, Jan 2026
ORD - WAW
Read more LOT reviews

Stuck on a plane for 6 hours due to a technical or mechanical issue.

Boarding was a madhouse. Airport staff was completely disinterested in communicating about the delays. Never again.

The seats are very narrow. Communication regarding bids for better seating could be better

Although I was flying in business class, the feeling, comfort and in general the whole experience was like flying in a low cost airline. Boarding by. Us, no priority to business class passengers. The plane was very old and looked poor and rely old. Seats do not recline. Space between rows very small. No separation between business class and economy. No separate toilet for business class passengers. Of course no entertainment, no WiFi and no charging. Very bad experience

No WiFi and ok comfort in business class. Home safe I guess that’s all that really matters.

Crew was excellent. Business class was poor on the short flight and mediocre at best on the international flight.

Very poor. Seats like economy class, food unbeatable, no charging, no entertainment, no WiFi, boarding by bus - no justification for calling and pricing this as business class

The flight itself was pleasant and on time. Crew was very good. However, breakfast food was barely acceptable. Unfortunately this satisfies the recent industry standards. I asked for a sandwich with ham (another choice was cheese), but received a sandwich with roast beef.

During the flight, the fleas biting me in the plane.

Boarding could've been improved a bit, the rest is excellent.

We were delayed three hours from Montenegro to Vienna on our outbound flight and then rebooked an extra leg on our trip to the US. Our bags, which Austrian made us check in in Montenegro even though the flight was barely half full, didn't find us for ten days. Then, when we asked for compensation for the delay we were given the runaround that the flight originated outside of the EU. Next time we fly Turkish Air.

My Austrian Air flight from Montenegro to Vienna was delayed by three hours because their plane de-icer was broken and they had to wait for the sun to come up before the ice could melt. This meant we missed our United flight altogether. So I can't speak about United, but I was not impressed by Austrian Air. They made us check in two carry on bags for a 60% full flight, and the bags didn't find us in the US for ten days. The re-routing they arranged included an extra leg, a midnight taxi ride across New Jersey and New York, and a five hour sleep in a hotel. Not impressed.

Most of the crew members were rude, flight arrived late and we missed our connecting flight, they damaged my friends suitcase so badly that two wheels had been destroyed.

Loved the courtesy and punctuality. Very professional and most importantly on time.

My layover in Vienna was supposed to be 35 minutes but because my flight was canceled I had to wait in the airport for an additional 8 hours.

Very limited legroom in a 10 hour flight.very old plane.

The flight was delayed for 30 minutes with no apparent reason. There is no entertainment at all, and no USB or electric outlets for charging your phone or tablet.

They had me unpack a handbag 2 lbs overweight into another handbag 8 lbs underweight for a Bible.

My flight was canceled and even though I paid אם KAYAK you didn't even answer me and obviously didn't refund my money. I will never buy a ticket through you again.

Accessibility serious problems in Viena airport making it seriousely difficult in in-between gates and boarding travel. Pretens of breakfast and service care in the economy pathetic.

The attendant on board was amazing. She should be doing business/first international long haul.

Although our flight was delayed the overall boarding process was very smooth and the crew was accommodating.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Aircraft was noisy, old and never dimmed the lights on a night flight even on business class! I flew 17 times on United and probably another 40 on other airlines United USA /Europe flights were the worst to include luggage delayed once going to europe and once coming back

Check how old the airframe is, some older ones have inoperable seat back entertainment or power.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Flight and crew were great. United didn't inform crew of immigration process which was disappointing!

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Typically good service onboard but baggage delay in airport was significant

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Everything about that day was great I was happy with how things went as a first time traveling with the airline thank you for all that you’ve doing by taking us there to our various destinations thanks.

They oversold the tickets by one which was my ticket so I didn’t have a ticket till last second

Not good. I was supposed to be in Mint but got in economy class

Service was slow and checked bag was off last evening when flying business

Turkish Airline canceled our tickets in the very last minute, with our luggage and everything else, all prepared and good to go. It’s clear that they sold the tickets for better money to someone else. Bad, Bad, Bad business!!!

Awful seating. Bad food. Staff only have one bottle of water and no cans.

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

I liked everything BUT the temperature. It was freezing and now I am sick.

Flight was delayed over one hour and I had to pay to select my seat, even though my booking supposedly had free selection (I paid extra for this at time of booking)

Flight was late arriving. So, we left 25 min late. Pilot made some time up during the flight. Therefore, we arrived alittle past original time.

The seat I was stuck in was so unimaginably uncomfortable. I have never had that tight of a seat in my 20 years of flying. Even budget airlines give you more space.

We were upgraded to economy plus and everything was awesome!

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

Information on your arrival and departure airports