EWR - SOF

$221 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 11/10. 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

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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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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

Sat, Sep 27 - Sun, Oct 19
United Airlines Logo
9:45 pm - 10:50 pmEWR-SOF
18h 05m1 stop
United Airlines Logo
12:45 pm - 7:25 amSOF-EWR
25h 40m2 stops
$551United Airlines
Find Deal
Wed, Oct 1 - Thu, Oct 23
SWISS Logo
9:50 pm - 12:00 pmEWR-SOF
31h 10m2 stops
SWISS Logo
10:50 am - 8:10 pmSOF-EWR
16h 20m1 stop
$552SWISS
Find Deal
Thu, Sep 25 - Fri, Oct 10
United Airlines Logo
9:45 pm - 11:00 pmEWR-SOF
18h 15m2 stops
United Airlines Logo
6:00 am - 3:40 pmSOF-EWR
16h 40m2 stops
$554United Airlines
Find Deal
Sat, Oct 18 - Tue, Nov 4
Turkish Airlines Logo
12:30 am - 8:35 amEWR-SOF
25h 05m1 stop
Turkish Airlines Logo
4:00 pm - 10:30 pmSOF-EWR
13h 30m1 stop
$556Turkish Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 29
Turkish Airlines Logo
12:30 am - 8:35 amEWR-SOF
25h 05m1 stop
Turkish Airlines Logo
9:40 pm - 11:30 pmSOF-EWR
31h 50m1 stop
$559Turkish Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 10
Austrian Airlines Logo
5:40 pm - 3:20 pmEWR-SOF
14h 40m1 stop
Austrian Airlines Logo
8:00 am - 1:55 pmSOF-EWR
12h 55m1 stop
$578Austrian Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
LOT Logo
8:10 pm - 1:50 pmEWR-SOF
34h 40m2 stops
LOT Logo
6:35 pm - 9:00 pmSOF-EWR
33h 25m1 stop
$586LOT
Find Deal
Mon, Oct 13 - Thu, Oct 16
LOT Logo
7:45 pm - 5:55 pmEWR-SOF
15h 10m1 stop
LOT Logo
5:20 am - 8:50 pmSOF-EWR
22h 30m1 stop
$590LOT
Find Deal
Mon, Nov 10 - Thu, Nov 20
Lufthansa Logo
8:45 pm - 6:20 pmEWR-SOF
14h 35m2 stops
Lufthansa Logo
6:05 am - 2:00 pmSOF-EWR
14h 55m2 stops
$629Lufthansa
Find Deal
Wed, Oct 29 - Tue, Dec 16
Austrian Airlines Logo
6:55 pm - 6:00 pmEWR-SOF
17h 05m2 stops
Austrian Airlines Logo
6:45 pm - 1:55 pmSOF-EWR
26h 10m1 stop
$630Austrian Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $551 (round-trip)
LOT
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 29% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$551
Overall average: $587
United Airlines
Sat 9/27Sun 10/19
EWR - SOF • 1 stop
Cheapest one-way
$221
Typical prices: $484-649
Multiple Airlines
Mon 11/10
EWR - SOF • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sofia!
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 September, where tickets cost $587 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,344 and $1,128 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 2 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$221
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 3% 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 $221 for a one-way ticket and $551 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Newark Liberty Airport and Sofia, with Star Alliance 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 $906 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 $641 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
LOTOverall score based on 1114 reviews
7.5Comfort
7.0Entertainment
7.2Food
8.2Crew
7.6Boarding
Airline reviews

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.

8.0 ExcellentMariusz, Sep 2025YYZ - WAW
Read more LOT reviews

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

Checking in took very long for whatever reason. Flight comfort these days is always poor so… Crew was great thought!

The seats are small and the movie selection was disappointing. However, the food was excellent and the cabin crew was attentive and kind.

The customer service rep on chat refused carrying golf set at no charge that is customary for LOT and others. I wanted yo carry just ONE club not even full set! Web check in was nightmare. Most horrible lounge at warsaw. To call it business class is a BIG exaggeration. Rude staff warsaw to nyc. Seats uncomfortable and not flat as is now customary. Bad content and entertainment system.

It was was okay but the seat was stiff and hard to sit on it!!

The 737 lacked business-class seating. It was basically economy plus but with the middle seats left unsold. There were no TV screens but good food and service.

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.

Despite the booked seats in front of the land we were moved to the back of the plane even first like 8 lines were totally without pasangers. When I tried to sit on empty seat flight attendant asked me to go to my dedicated seat in the fully crowded back of the plane. She was not able to explain why. Food was very poor on flight LAX - VIE.

We had a wonderful experience overall. The only issue was check-in our luggage at the Split Airport counter. It was very confusing because we needed to pay for baggage.

Austrian Airlines help and service was fine, but Kayak misled us into believing we had purchased a Business Class ticket. In fact, the tickets were only upgraded Coach Class tickets with luggage restrictions that belonged to the Coach Class. Very disappointed! Paid over $$$$ 9K for the two tickets. Very disappointing!

Quick and organized boarding process, friendly staff but not as many snacks and drinks as the previous flight overnight

Landing was a little hard. Food was not great My prior review was for the flight to nyc too

Landing was a little hard. Food was not great. No options.

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!!!

The food should improve! And The flight should leave on time and not make the traveler wait.

We love united ! We would like to acknowledge Aimee in the lounge near gate 130

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

The flight was operated by Lufthansa. You can't expect much from them anymore. They have a talent in getting something wrong.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

my experience was great with Turkish airlines . the problem i encountered was with kayak booking. When I booked . it showed that im allowed a bag . and when I got to the airport, i had to pay $165 for one bag.

Not up to Business Class standards. Two of the three toilets were out of order. The hostesses were aware and didn’t show any responsible act to do something. Food quality was not what we expect from Turkish hospitality. Overall we were not impressed and disappointed.

During mid flight, try to get a flight attendant to help I couldn’t find one Otherwise, everything was perfect

I was not given basinett seat.The connecting flight was missed due to airline fault i was not accomodated for hotel.Drinks were normt served frewuently.Never travelling again on tirkish airlines.I always travel wiyh family by turkish airline but no more.zero stars

The crew were very hospitable and pleasant. The food was pretty good. Unfortunately, there was a flight delay of more than 2 hours. We're not sure why but it appeared to be outside the control of Turkish Airlines.

Bough tickets with luggage, but made me pay at Airport as well

The economy seat was so uncomfortable, had not enough leg room for 13 hours flight, front seat basket was broken and couldn’t hold anything, food quality was horrible( we got food poisoned ) we charged for logged which used to be free. We paid too much for this flight and very disappointed. Turkish air line better to make satisfy and respect people instead of find different way to scam people.

This is really the rating of two flights. JFK to IST then IST to NQZ. New York to Istanbul was good. Good crew and all positives. The flight to Astana was so bad that brought it all down. Crew was nonexistent above the minimum, seats were cramped, and it was hot on the plane. Turkish Airlines seems to be slipping down to US based carriers level.

The 2 agents on the check in counter were super nice , helpful and very polite. Boarding was like a 1 2 3, I would recommend Turkish airlines for your next trip.

I liked Quiet people around me. Crew could have helped people with overhead luggage so they aren't moving other peoples bags around and causing problems for people that had there bags there first

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

The plane was delayed by two hours in Chicago which led to us missing the next flight. Lufthansa rebooked the flight and booked us a hotel for the night in Frankfurt. The level of customer service and getting us taken care of was superb. The flight crew and the service on the ground was superb.

It was a short flight, everything was good with it.

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)

Stop charging for alcohol overseas flights and start taking cash again not everyone wants to pay with card if the person is bigger give him seat on the outside seats not the middle in between the people is common sense and mainly if you fly for Lufthansa provides the sam service and experience...

good entertainment package but rather small seats for business class

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

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