$513 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 11/25. 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

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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, Nov 25 - Wed, Dec 24
Delta Logo
8:00 am - 11:55 amPHL-BEG
21h 55m2 stops
Delta Logo
6:05 am - 10:11 pmBEG-PHL
22h 06m2 stops
$513Delta
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Tue, Nov 25 - Wed, Dec 24
United Airlines Logo
5:40 pm - 1:05 pmPHL-BEG
13h 25m1 stop
United Airlines Logo
6:15 am - 11:30 pmBEG-PHL
23h 15m2 stops
$527United Airlines
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Wed, Apr 1 - Mon, Apr 6
Multiple Airlines Logo
3:30 pm - 4:05 pmPHL-BEG
18h 35m2 stops
Multiple Airlines Logo
5:15 pm - 4:00 pmBEG-PHL
28h 45m2 stops
$531Multiple Airlines
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Tue, Nov 25 - Wed, Dec 24
United Airlines Logo
5:40 pm - 1:05 pmPHL-BEG
13h 25m1 stop
United Airlines Logo
1:50 pm - 4:05 pmBEG-PHL
32h 15m1 stop
$537United Airlines
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Wed, Mar 25 - Sun, Mar 29
Air Canada Logo
4:35 pm - 12:45 pmPHL-BEG
15h 10m2 stops
Air Canada Logo
1:05 pm - 2:46 pmBEG-PHL
31h 41m2 stops
$553Air Canada
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Fri, Feb 20 - Fri, Feb 27
Multiple Airlines Logo
12:55 pm - 1:45 pmPHL-BEG
18h 50m2 stops
Multiple Airlines Logo
9:40 am - 10:46 pmBEG-PHL
19h 06m2 stops
$558Multiple Airlines
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Wed, Mar 25 - Sun, Mar 29
Lufthansa Logo
4:35 pm - 12:45 pmPHL-BEG
15h 10m2 stops
Lufthansa Logo
6:00 am - 4:00 pmBEG-PHL
16h 00m1 stop
$564Lufthansa
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Tue, Nov 25 - Wed, Dec 24
Lufthansa Logo
5:40 pm - 12:45 pmPHL-BEG
13h 05m2 stops
Lufthansa Logo
1:30 pm - 4:05 pmBEG-PHL
32h 35m2 stops
$565Lufthansa
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Wed, Apr 1 - Mon, Apr 6
United Airlines Logo
10:00 am - 12:50 pmPHL-BEG
44h 50m3 stops
United Airlines Logo
1:50 pm - 2:26 pmBEG-PHL
54h 36m2 stops
$652United Airlines
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Tue, Nov 25 - Wed, Dec 24
SWISS Logo
5:40 pm - 1:45 pmPHL-BEG
14h 05m2 stops
SWISS Logo
2:35 pm - 9:31 pmBEG-PHL
36h 56m3 stops
$757SWISS
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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 October, when tickets cost $571 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,011 and $996 respectively.

Good to know

Low seasonFebruary
Cheapest flight$513
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 19% increase in price.
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 9017 reviews
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

10.0 ExcellentClaire, Nov 2025ORD - YOW
Read more United Airlines reviews

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

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

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

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.

Boarding procedure should have the crew and personnel who are more trained, in a sense of precisely knowing what can be done and what cannot. They do not have the exact information on what you should do in the first place, also the boarding itself was slightly delayed due to the aircraft "not being ready".

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

..it was short.. I didn't like that my red bag went out completely stained with black stains..That's probably some airport staff bad handling but still

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

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

Information on your arrival and departure airports