$660 Find Cheap Flights from Philadelphia to Serbia

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Serbia departing on 12/30. 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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Cheap Flights from Philadelphia to Serbia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Belgrade
Belgrade1 stop$660
Belgrade
Belgrade1 stop$660

Book Cheap Philadelphia to Serbia Plane Tickets

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

Tue, Dec 30 - Sat, Feb 28
 Logo
5:40 pm - 12:55 pmPHL-BEG
13h 15m1 stop
 Logo
9:40 am - 9:32 pmBEG-PHL
17h 52m2 stops
Tue, Dec 30 - Sat, Feb 28
 Logo
3:30 pm - 7:10 pmPHL-BEG
45h 40m2 stops
 Logo
9:40 am - 2:47 pmBEG-PHL
35h 07m2 stops
Tue, Dec 30 - Sat, Feb 28
Lufthansa Logo
5:40 pm - 1:05 pmPHL-BEG
13h 25m1 stop
Lufthansa Logo
1:40 pm - 4:05 pmBEG-PHL
32h 25m1 stop
$698Lufthansa
Find Deal
Tue, Dec 30 - Sat, Feb 28
 Logo
9:20 am - 12:40 pmPHL-BEG
21h 20m3 stops
 Logo
9:40 am - 2:47 pmBEG-PHL
35h 07m2 stops
Sun, Sep 28 - Tue, Oct 21
Air Canada Logo
9:20 am - 4:25 pmPHL-BEG
25h 05m2 stops
Air Canada Logo
1:00 pm - 9:38 pmBEG-PHL
14h 38m2 stops
$734Air Canada
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Wed, Sep 24 - Thu, Oct 16
Air Canada Logo
3:25 pm - 3:55 pmPHL-BEG
18h 30m2 stops
Air Canada Logo
1:00 pm - 2:38 pmBEG-PHL
31h 38m2 stops
$737Air Canada
Find Deal
Wed, Sep 24 - Fri, Oct 17
Lufthansa Logo
5:35 pm - 1:10 pmPHL-BEG
13h 35m1 stop
Lufthansa Logo
6:10 am - 4:00 pmBEG-PHL
15h 50m1 stop
$740Lufthansa
Find Deal
Wed, Sep 24 - Mon, Oct 20
United Airlines Logo
3:25 pm - 1:10 pmPHL-BEG
15h 45m2 stops
United Airlines Logo
1:55 pm - 4:00 pmBEG-PHL
32h 05m1 stop
$759United Airlines
Find Deal
Tue, Sep 30 - Mon, Oct 20
United Airlines Logo
7:58 pm - 1:10 pmPHL-BEG
35h 12m2 stops
United Airlines Logo
1:55 pm - 4:00 pmBEG-PHL
32h 05m1 stop
$775United Airlines
Find Deal
Wed, Sep 24 - Sat, Oct 18
SWISS Logo
1:03 pm - 2:00 pmPHL-BEG
18h 57m2 stops
SWISS Logo
9:25 am - 9:28 pmBEG-PHL
18h 03m2 stops
$802SWISS
Find Deal
Booking Insights

KAYAK's insights & trends for Philadelphia to Serbia flights

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

What is the cheapest month to fly from Philadelphia to Serbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Serbia, 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 Philadelphia to Serbia is April, when tickets cost $731 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,112 and $1,011 respectively.


Good to know

Low seasonFebruary
Cheapest flight$660
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Philadelphia to Belgrade

FAQs - booking Serbia flights

  • How does KAYAK find such low prices on flights from Philadelphia to Serbia?

    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 Philadelphia to Serbia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Philadelphia to Serbia 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 Philadelphia to Serbia?

    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 from Philadelphia to Serbia with an airline and back with another airline.

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

    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 from Philadelphia to Serbia 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 Philadelphia to Serbia

 
Need help choosing which airline to fly with from Philadelphia to Serbia? 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.
7.4
United AirlinesOverall score based on 8912 reviews
7.0Entertainment
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
Airline reviews

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

10.0 ExcellentDr. Joseph, Aug 2025ORD - DEN
Read more United Airlines reviews

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

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.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

Staff members were not helpful they ignored all calls for an attendant.

Flight was delayed and missed my connection Lufthansa didn’t respond.

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

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!

I liked the crews attentiveness, all food and drink items were tasty, and came out in a timely manner. The entertainment systems were not as responsive and my seat had issues with the auxiliary for the headphones. Seats were OK, and the headrest for my seat could go back only so far. Bathrooms were tight fit.

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Hate their old flights, boatding, food and services. Very poor quality

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 food could be better, more snacks. And have some plugs to chargue the phone.

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

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Seating was average for a first class seat. It very modern. I expected better.

Everything you need to know for your flight from Philadelphia to Serbia

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