EWR - SOF

$266 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 8/3. 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
$865
Typical prices: $857-$561
SWISS
Tue 7/14Wed 9/23
EWR - SOF • 2 stops
Cheapest one-way
$266
Typical prices: $418-$450
Multiple Airlines
Mon 8/3
EWR - SOF • 3 stops
Top airlines
Cheapest • from $865 (round-trip)
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Newark and Sofia. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $607 (round-trip)
Shortest trip • 11h 10m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 12% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 30% price drop
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

Tue, Jul 14 - Wed, Sep 23
SWISS Logo
9:45 pm - 6:40 pm
EWR
-
SOF
13h 55m
2 stops
SWISS Logo
11:05 am - 8:15 pm
SOF
-
EWR
16h 10m
1 stop
$865SWISS
Sun, Jul 5 - Sun, Sep 6
United Airlines Logo
7:30 pm - 11:00 pm
EWR
-
SOF
20h 30m
1 stop
United Airlines Logo
6:20 am - 8:33 pm
SOF
-
EWR
21h 13m
2 stops
$866United Airlines
Sat, Jul 4 - Wed, Sep 2
Multiple Airlines Logo
5:15 pm - 6:40 pm
EWR
-
SOF
18h 25m
1 stop
Multiple Airlines Logo
6:55 pm - 1:55 pm
SOF
-
EWR
26h 00m
1 stop
$867Multiple Airlines
Sat, Jul 4 - Wed, Sep 2
United Airlines Logo
5:15 pm - 11:15 pm
EWR
-
SOF
23h 00m
1 stop
United Airlines Logo
6:10 am - 9:59 pm
SOF
-
EWR
22h 49m
2 stops
$868United Airlines
Sun, Jul 5 - Wed, Sep 2
United Airlines Logo
7:30 pm - 6:40 pm
EWR
-
SOF
16h 10m
2 stops
United Airlines Logo
8:00 am - 11:59 pm
SOF
-
EWR
22h 59m
2 stops
$869United Airlines
Tue, Jul 7 - Thu, Sep 3
United Airlines Logo
7:30 pm - 6:00 pm
EWR
-
SOF
15h 30m
1 stop
United Airlines Logo
6:10 am - 3:45 pm
SOF
-
EWR
16h 35m
2 stops
$870United Airlines
Wed, Jul 8 - Wed, Jul 22
Multiple Airlines Logo
8:25 pm - 11:10 pm
EWR
-
SOF
19h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 9:10 pm
SOF
-
EWR
34h 55m
3 stops
$871Multiple Airlines
Sun, Jul 5 - Tue, Sep 1
United Airlines Logo
7:30 pm - 6:40 pm
EWR
-
SOF
16h 10m
2 stops
United Airlines Logo
6:10 am - 9:59 pm
SOF
-
EWR
22h 49m
2 stops
$872United Airlines
Mon, Jul 13 - Tue, Jul 21
United Airlines Logo
8:30 pm - 11:15 pm
EWR
-
SOF
19h 45m
1 stop
United Airlines Logo
8:00 am - 1:55 pm
SOF
-
EWR
12h 55m
1 stop
$873United Airlines
Tue, Jul 14 - Wed, Sep 23
Multiple Airlines Logo
8:25 pm - 11:05 pm
EWR
-
SOF
19h 40m
2 stops
Multiple Airlines Logo
5:25 am - 9:00 pm
SOF
-
EWR
22h 35m
3 stops
$874Multiple 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.

How much is a round-trip flight from Newark Airport to Sofia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Newark Airport to Sofia departing in July.

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 $480 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,198 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 5 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$266
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 17% 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 5 days, the lowest price for a flight from Newark Airport to Sofia was $266 for a one-way ticket and $865 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, and Star Alliance are the airline alliances operating flights between Newark Liberty Airport and Sofia, with SkyTeam 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 $724 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 $599 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.
7.6
Austrian AirlinesOverall score based on 924 reviews
7.6Boarding
7.3Comfort
6.8Food
6.8Entertainment
8.1Crew
Airline reviews

The layover period at Frankfurt of one hour and forty minutes was not enough time to clear the two-hour line at passport control: we missed the flight to San Francisco. Condor did a good job rebooking us that same day, but our bags ended up in Los Angeles.

4.0 OkayAnonymous, Jun 2026
VIE - FRA
Read more Austrian Airlines reviews

The layover period at Frankfurt of one hour and forty minutes was not enough time to clear the two-hour line at passport control: we missed the flight to San Francisco. Condor did a good job rebooking us that same day, but our bags ended up in Los Angeles.

This is truly the worst travel experience of my life. The UK ETA program had a technical failure, and I was stuck in limbo for 24 hours, unable to board my flight and unable to navigate anything in my itinerary. I had to rebook an entirely new flight and I’m now out doubled the money. Unconscionable.

OK, would prefer some meat for dinner, not just pasta although was tasty. There was only one dish, no choices

Flight delayed with no explanation. Boarding was confused (proceed to plane, go back to waiting area).

Boarding by bus - this is 2026! Luggage did not board the plane though we had over two hours between flights. After it was located it didn’t fly immediately but waited one or two flights until boarding to fly yo Belgrade.

It was a great experience. The aircraft is a bit dated but other than that it was great.

Last few years I didn't not have great experience with United Airlines.

Booked economy. Seat felt like it was a bit more roomy than my last trans Atlantic flights. I had a nice person sitting next to me. Everything was as good as it could be considering you are 35,000 feet up in the air and in a metal container. Beers, wine, food were all readily available. Plenty of movies and shows to watch. Friendly flight staff

Short flight. Bare bones and kinda seeming like an older plane. But got me there on time and that's what counts. Perfectly fine flight all the way from start to finish.

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.

Amazing crew, delicious food and drink selection. 12hr felt more like a 4hrs. Comfortable beds. Can’t wait for the new business class cabin

Every time I fly LOT, I swear I will never do it again. And changing planes in Warsaw is a horror. Not even remotely organized. I can only feel sorry for the staff who have to put up with it.

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.

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

For that price on Business class, I expected to have the pod seats. These were configured as 2/3/2 and my seat mate talked half the flight with a friend across the isle, loudly. Very uncouth.

Everything was the best it could be. Crew found me with pre- ordered food. Excellent experience!

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

All good flight was 35 minutes early when arriving in Edinburgh

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

Flight on time. Excellent service in Premium Economy. Great food served and cleaned up promptly. Unfortunately the climate control was malfunctioning and it was very cold and felt a bit like camping. Cold helps with sleep though so not complaining too much. Slept well. It asks to rate "entertainment". I do not like any IFE, don't shove a big screen in my face—I have my own phone if I want it. So this will always get low ratings.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

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.

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

Information on your arrival and departure airports