EWR - SOF

$318 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 1/15. 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
$346
Overall average: $666
Austrian Airlines
Mon 1/26Mon 2/2
EWR - SOF • 1 stop
Cheapest one-way
$318
Multiple Airlines
Thu 1/15
EWR - SOF • 2 stops
Top airlines
Austrian Airlines
Cheapest • from $366 (round-trip)
Austrian Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 35% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, Jan 26 - Mon, Feb 2
Austrian Airlines Logo
5:55 pm - 6:00 pm
EWR
-
SOF
17h 05m1 stop
Austrian Airlines Logo
6:45 pm - 1:55 pm
SOF
-
EWR
26h 10m1 stop
$346Austrian Airlines
Mon, Jan 12 - Mon, Jan 19
Austrian Airlines Logo
5:55 pm - 6:00 pm
EWR
-
SOF
17h 05m1 stop
Austrian Airlines Logo
6:45 pm - 1:55 pm
SOF
-
EWR
26h 10m1 stop
$366Austrian Airlines
Wed, Jan 14 - Wed, Jan 21
Multiple Airlines Logo
10:30 am - 6:20 pm
EWR
-
SOF
24h 50m2 stops
Multiple Airlines Logo
7:55 am - 1:55 pm
SOF
-
EWR
13h 00m1 stop
$381Multiple Airlines
Sun, Jan 11 - Mon, Jan 26
Multiple Airlines Logo
10:00 pm - 1:15 pm
EWR
-
SOF
32h 15m2 stops
Multiple Airlines Logo
6:45 pm - 1:55 pm
SOF
-
EWR
26h 10m1 stop
$383Multiple Airlines
Wed, Jan 14 - Wed, Jan 21
LOT Logo
11:10 pm - 5:50 pm
EWR
-
SOF
11h 40m1 stop
LOT Logo
2:35 pm - 9:00 pm
SOF
-
EWR
13h 25m1 stop
$386LOT
Mon, Jan 12 - Tue, Jan 20
Austrian Airlines Logo
5:55 pm - 6:00 pm
EWR
-
SOF
17h 05m1 stop
Austrian Airlines Logo
7:55 am - 1:55 pm
SOF
-
EWR
13h 00m1 stop
$392Austrian Airlines
Sun, Jan 25 - Mon, Feb 2
SWISS Logo
6:40 pm - 2:15 pm
EWR
-
SOF
12h 35m1 stop
SWISS Logo
3:00 pm - 1:55 pm
SOF
-
EWR
29h 55m1 stop
$397SWISS
Tue, Jan 27 - Mon, Feb 2
Multiple Airlines Logo
8:50 pm - 10:45 pm
EWR
-
SOF
18h 55m1 stop
Multiple Airlines Logo
6:45 pm - 1:55 pm
SOF
-
EWR
26h 10m1 stop
$400Multiple Airlines
Sun, Jan 11 - Mon, Jan 26
LOT Logo
10:35 pm - 1:50 pm
EWR
-
SOF
32h 15m1 stop
LOT Logo
6:35 pm - 8:25 pm
SOF
-
EWR
32h 50m1 stop
$401LOT
Wed, Jan 28 - Mon, Feb 2
Multiple Airlines Logo
11:53 am - 6:20 pm
EWR
-
SOF
23h 27m2 stops
Multiple Airlines Logo
3:00 pm - 1:55 pm
SOF
-
EWR
29h 55m1 stop
$405Multiple 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’s the cheapest day of the week to fly from Newark Liberty Airport to Sofia?

The average price of all round-trip flights from Newark Airport to Sofia clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Newark Liberty Airport to Sofia, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Sofia, Tuesday is the cheapest day to fly and Sunday is the most expensive.

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 November, where tickets cost $489 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,107 and $914 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$318
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 12% 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 $318 for a one-way ticket and $346 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?

    Vienna 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 $763 and an overall rating of 7.6, Austrian Airlines is the most popular choice. LOT is also a great choice for the route, with an average price of $654 and an overall rating of 7.6.

  • 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.
7.6
Austrian AirlinesOverall score based on 879 reviews
6.8Food
7.6Boarding
6.8Entertainment
7.3Comfort
8.1Crew
Airline reviews

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.

2.0 MediocreChristina, Nov 2025
BCN - VIE
Read more Austrian Airlines reviews

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.

Excellent flight. The crew was exceptionally attentive and organized. Attention to details is unmatched.

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.

One thing I really liked about Austrian Airlines was that the flight attendants were very kind, and the in-flight entertainment offered many choices. One thing that could be improved is the meal service, since only a vegetarian option was offered — it would be better to have at least two choices.

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

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

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.

Agents helping disable person doesnt know connections to Poland and after 9 agents helping and 2hours ,we made it to proper terminal. Polish Dreamliner its Polish nightmare liner with so narrow seats and no room under front seat for bag and feet,in economy class.To upgrade, to higher standart cost an arm and leg ,even there are empty seats No good experience overall

The crew and flight were amazing . However , my bag’s locker got broken and no refund provided . Everything else was amazing except this bad incident that ruined my experience

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.

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Boarding was organized. Old plane. Seat fairly comfortable. Business Class much too large so you don’t receive as much attention as you should considering what you pay for the seat.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

Ridiculous boarding. Enter the gate, walk down a staircase with bags, exit a building, get on a crowded bus, dropped off a few meters away from the aircraft, walk with bags to another set of stairs to board the aircraft. And all that during a pouring down rain, and with children. Ridiculous!!!

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.

Second leg of Turkish Airline with Indigo is disaster for following reason. 1) You have to carry your cabin bags through ladder to boeing 777 because it was parked somewhere in parking lot and was not given a gate to board passengers and this seems to be people traveling to and fro from those flights and is not issue with flight itself. 2) I choose non vegetarian food on Turkish portal way ahead of checkin to entire trip, However the Indigo flight gave me random veg food saying they code veg food code from Turkish. 3) Indigo did not served any alcoholic beverages stating some weird reason which is non nonsensical. 4)Indigo have TV screens in front of you but it displays nothing except "Welcome Onboard" with annoying white black ground in dark flight. This is the most stupidest and annoying part because you are held hostage for 7 hours and only thing you could do is stare back at white screen which does not have entertainment package or even flight tracker. Such a shame.

nice and clean plane but the seats and the comfort was not what i expected. i expected more based on all the ads and reviews that i've read. I guess you get what you pay for in economy.

Overall it was good. Food was bad. I ordered gluten free vegetarian meal. But I got gluten free chicken for my long flight from Seattle to Istanbul. I don’t eat any kind of meat. Second meal I got eggplant with meat which I couldn’t eat. I don’t understand why we can’t get gluten free vegetarian meal for a 12 hour flight. I eat the bread and that was it.

Worse worse worse, i would not recommend this airline to anyone. Istanbul airport maybe State of the Art facility but staff is rude, only works if they get tips, and they push you to give tips even though my family had spent $50 in tips. Airline staff doesn't speak english so you really can't understand them. It was a nightmare travelling with Turkish. Never again.

As a big guy the seats are way too small for me. Would prefer more comfortable seats on these long haul flights.

My flight was canceled 1 minute before boarding. The customer service was owful, no one could tell us what was going happened. I spent 30hrs instead of 15 from Washington DC to Brussels. No apologie or help

Boeing 777 is a bad choice for a such a long flight.

The staff at IST airport could have been more helpful. Too much wasted time and the plane from IST to KHI was just horrible. The plane was not clean and smelled bad!

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

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!

Insulting. Lufthansa flight from Munich to EWR had us getting our luggage when we were told in Florence that it would follow us to Indianapolis. It did not. Then very slow security in EWR caused me and three other passengers from Lufthansa flight from Munich to miss the boarding closure. Behind me were two elderly grandparents and their ten year old grandson. We were all refused entry on a plane to Indy that was still at the gate. The doors had not even closed inside the terminal yet. No apologies or compensation offered. Not even a meal voucher let alone a free hotel stay for our inconvenience. I m not sure what the other three passengers behind me did ( they were elderly with a grandson, recall), but I stated 12 hours overnight in a chilly EWR airport until next flight to Indy at 850 next morning.

The pasta in the evening meal was tasteless. Otherwise, the flight was okay.

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

Information on your arrival and departure airports