$593 Find Cheap Flights from Philadelphia to Serbia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Serbia departing on 5/30. 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, 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

Sun, Apr 19 - Mon, Apr 27
Delta Logo
6:00 am - 10:55 pm
PHL
-
BEG
34h 55m
2 stops
Delta Logo
12:35 pm - 6:08 pm
BEG
-
PHL
35h 33m
2 stops
$732Delta
Sun, Apr 19 - Mon, Apr 27
United Airlines Logo
5:40 pm - 12:45 pm
PHL
-
BEG
13h 05m
1 stop
United Airlines Logo
4:55 pm - 4:05 pm
BEG
-
PHL
29h 10m
1 stop
$759United Airlines
Wed, May 13 - Wed, May 20
Delta Logo
11:28 am - 11:55 am
PHL
-
BEG
18h 27m
2 stops
Delta Logo
6:15 am - 6:06 pm
BEG
-
PHL
17h 51m
2 stops
$762Delta
Sun, Apr 19 - Mon, Apr 27
United Airlines Logo
1:27 pm - 4:10 pm
PHL
-
BEG
20h 43m
2 stops
United Airlines Logo
4:55 pm - 4:05 pm
BEG
-
PHL
29h 10m
1 stop
$764United Airlines
Sat, Apr 18 - Mon, Apr 27
United Airlines Logo
7:45 pm - 4:10 pm
PHL
-
BEG
38h 25m
2 stops
United Airlines Logo
4:55 pm - 4:05 pm
BEG
-
PHL
29h 10m
1 stop
$769United Airlines
Tue, Jul 28 - Tue, Aug 18
United Airlines Logo
10:05 am - 11:35 pm
PHL
-
BEG
31h 30m
2 stops
United Airlines Logo
4:55 pm - 10:46 pm
BEG
-
PHL
35h 51m
2 stops
$771United Airlines
Tue, Jul 28 - Tue, Aug 18
United Airlines Logo
9:21 am - 11:35 pm
PHL
-
BEG
32h 14m
3 stops
United Airlines Logo
4:55 pm - 10:46 pm
BEG
-
PHL
35h 51m
2 stops
$772United Airlines
Sat, Apr 18 - Mon, Apr 27
United Airlines Logo
7:45 pm - 12:45 pm
PHL
-
BEG
35h 00m
2 stops
United Airlines Logo
4:55 pm - 5:33 pm
BEG
-
PHL
30h 38m
2 stops
$774United Airlines
Sun, Apr 19 - Sun, Apr 26
Delta Logo
6:00 am - 10:55 pm
PHL
-
BEG
34h 55m
2 stops
Delta Logo
6:15 am - 11:58 pm
BEG
-
PHL
23h 43m
2 stops
$782Delta
Sun, Apr 19 - Sun, Apr 26
Lufthansa Logo
5:40 pm - 4:10 pm
PHL
-
BEG
16h 30m
1 stop
Lufthansa Logo
5:50 am - 4:05 pm
BEG
-
PHL
16h 15m
1 stop
$787Lufthansa
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.

Which airlines provide the cheapest flights from Philadelphia to Serbia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Philadelphia to Serbia were found on Delta ($732) and United Airlines ($771).

Good to know

Low seasonOctober
Cheapest flight$560
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 5% 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 3 airlines serving 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.
7.9
DeltaOverall score based on 8360 reviews
7.9Comfort
7.8Entertainment
8.5Crew
8.1Boarding
7.2Food
Airline reviews

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

10.0 ExcellentAnonymous, Mar 2026
SAT - LAX
Read more Delta reviews

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

Excellent service, I love the soft blush pink mood lighting on the 767-400ER during meal service. The overhead gasper vents on the 767-400ER were also very strong with a lot of airflow to keep me comfortable on my flight.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

The business class seat is exceptional. I wish the food is more palatable.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

Overall, the flight was good. Lounge access should be with all business class tickets.

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.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

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

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

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

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

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

Information on your arrival and departure airports