$362 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 5/19. 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 Serbia

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

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, Apr 21 - Wed, May 6
Multiple Airlines Logo
4:25 pm - 4:30 pm
PHL
-
BEG
18h 05m
2 stops
Multiple Airlines Logo
6:15 am - 10:43 pm
BEG
-
PHL
22h 28m
2 stops
$488Multiple Airlines
Tue, Apr 7 - Fri, Apr 17
Multiple Airlines Logo
4:25 pm - 4:30 pm
PHL
-
BEG
18h 05m
2 stops
Multiple Airlines Logo
5:50 am - 2:46 pm
BEG
-
PHL
14h 56m
2 stops
$506Multiple Airlines
Tue, Apr 21 - Wed, May 6
Multiple Airlines Logo
3:30 pm - 12:20 pm
PHL
-
BEG
14h 50m
2 stops
Multiple Airlines Logo
6:10 am - 4:05 pm
BEG
-
PHL
15h 55m
1 stop
$514Multiple Airlines
Tue, Apr 7 - Fri, Apr 17
Multiple Airlines Logo
5:40 pm - 12:25 pm
PHL
-
BEG
12h 45m
1 stop
Multiple Airlines Logo
1:05 pm - 2:46 pm
BEG
-
PHL
31h 41m
2 stops
$520Multiple Airlines
Tue, Jul 28 - Fri, Aug 14
United Airlines Logo
10:05 am - 4:05 pm
PHL
-
BEG
24h 00m
2 stops
United Airlines Logo
5:50 am - 9:45 am
BEG
-
PHL
33h 55m
2 stops
$566United Airlines
Tue, May 19 - Tue, Jun 9
Multiple Airlines Logo
6:00 am - 4:30 pm
PHL
-
BEG
28h 30m
2 stops
Multiple Airlines Logo
2:00 pm - 9:48 am
BEG
-
PHL
25h 48m
2 stops
$567Multiple Airlines
Tue, May 19 - Tue, Jun 9
Multiple Airlines Logo
6:00 am - 4:30 pm
PHL
-
BEG
28h 30m
2 stops
Multiple Airlines Logo
6:20 am - 4:05 pm
BEG
-
PHL
15h 45m
1 stop
$581Multiple Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
10:35 am - 11:50 pm
PHL
-
BEG
31h 15m
2 stops
United Airlines Logo
1:50 pm - 10:14 am
BEG
-
PHL
25h 24m
2 stops
$587United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
8:02 pm - 11:50 pm
PHL
-
BEG
21h 48m
2 stops
United Airlines Logo
6:15 am - 9:14 am
BEG
-
PHL
32h 59m
2 stops
$588United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
8:02 pm - 11:50 pm
PHL
-
BEG
21h 48m
2 stops
United Airlines Logo
6:15 am - 1:17 pm
BEG
-
PHL
37h 02m
2 stops
$592United Airlines
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.

How long does a flight from Philadelphia to Serbia take?

The duration of a flight to Serbia depends on your arrival airport. The shortest route to Serbia from Philadelphia is to Belgrade, which takes 15h 25m.

Good to know

Low seasonOctober
Cheapest flight$362
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 33% 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 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 8192 reviews
8.1Boarding
7.9Comfort
7.2Food
7.8Entertainment
8.5Crew
Airline reviews

Excellent!!! Aeromexico is a great airline. What was not that good is the service provided by Kayak. It is never clear and not easy to manage.

10.0 ExcellentEdgar Otto Enrique, Feb 2026
BOS - MEX
Read more Delta reviews

Excellent!!! Aeromexico is a great airline. What was not that good is the service provided by Kayak. It is never clear and not easy to manage.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

This is the first time I've been disappointed with Delta. I was called by Delta to see if I would volunteer to change flights since my original flight home was overbooked. I accepted. The modified booking only provided me a 35 minute layover - when you subtract the fact that boarding closes for a flight 15 minutes early, that gave me 20 minutes to run for one end of the airport to the other. I barely made it. On the 2.5 hour flight to Tampa, the crew repeatedly let us know over the intercom that they cannot serve drinks or snacks due to safety/turbulence. I would have accepted this reason if they did not CONTINUALLY SERVE DRINKS AND COOKED FOOD to First class. If safety is the excuse then the entire plane should be strapped in for safety. On top of this the air conditioning vents were not working correctly and the plane was uncomfortably warm. I love Delta and am a loyal Delta traveler, and I have never had an experience like this. I don't know if there's a disconnect between availability among third-party sites like KAYAK and the airlines or what, but when overbooking causes issues like this for travelers it should be reviewed and changes to the booking process should be made. I blame BOTH KAYAK and Delta for this terrible experience.

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Smooth boarding, pleasant and professional lady checking us in. Crew service was excellent, again pleasant, but professional. Nice touch-down on landing! Thank you Delta. 💗

Originally, I was booked in economy. I paid several hundred additional dollars to upgrade to first class. Then I paid several more hundred dollars to change my flight to a slightly earlier flight. I asked if the changed flight would also seat me in first class, and I was told that it would. When I boarded the plane, however, I was seated in economy. So, I paid $500-600 more than I paid for my original ticket for an upgrade and a changed flight - received the changed flight (which was nice), but did not receive the upgrade. So, I was not completely satisfied.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Check-in and in-flight staff were better than average. The seat was a fair size but too hard and not enough padding. The cushion/pillow provided is poor (thin and seems to be disposable ,it provides no effective cushioning or support). Food was OK-ish but no choice of inflight snacks and no easy place to get drinks other than water (I could ask for juice by intruding into the staff area at the back of the plane) Entertainment was very good actually. Overall better than I expected from a US-based airline (sorry!) but compared to ANA or Singapore it was so-so. (I live in Japan so they are my comparative airlines)

Everything was on time Will use united again for sure

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.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL 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.

Late flight Delays Poor service Poor staff Worst airline ever

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

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

Information on your arrival and departure airports