$251 Find Cheap Flights from Philadelphia to Heidelberg - Compare and Save

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 Heidelberg departing on 11/14. 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.
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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$658
Typical prices: $797-$1,267
Multiple Airlines
Thu 8/27Thu 9/10
PHL - FRA • 1 stop
Cheapest non-stop
$821
Typical prices: $694-$1,082
Lufthansa
Tue 11/3Tue 11/17
PHL - FRA • Non-stop
Arrival airport
You can't fly directly to Heidelberg. It is served by Frankfurt am Main (FRA), located 44.6 miles from Heidelberg.
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Philadelphia to Heidelberg (PHL-FRA)

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

Thu, Aug 27 - Thu, Sep 10
Multiple Airlines Logo
9:12 am - 5:45 am
PHL
-
FRA
14h 33m
1 stop
Multiple Airlines Logo
12:30 pm - 10:32 pm
FRA
-
PHL
16h 02m
1 stop
$658Multiple Airlines
Tue, Nov 24 - Thu, Dec 3
Multiple Airlines Logo
6:35 pm - 7:40 pm
PHL
-
FRA
19h 05m
1 stop
Multiple Airlines Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$669Multiple Airlines
Mon, Jan 4 - Mon, Jan 18
Multiple Airlines Logo
6:35 pm - 6:10 pm
PHL
-
FRA
17h 35m
1 stop
Multiple Airlines Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$670Multiple Airlines
Tue, Nov 24 - Thu, Dec 3
Multiple Airlines Logo
6:51 pm - 2:10 pm
PHL
-
FRA
13h 19m
2 stops
Multiple Airlines Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$673Multiple Airlines
Mon, Jan 4 - Mon, Jan 18
Iberia Logo
4:40 pm - 6:50 pm
PHL
-
FRA
20h 10m
2 stops
Iberia Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$683Iberia
Mon, Jan 4 - Mon, Jan 18
Iberia Logo
4:40 pm - 6:50 pm
PHL
-
FRA
20h 10m
2 stops
Iberia Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$684Iberia
Sat, Jan 2 - Sat, Jan 16
Multiple Airlines Logo
7:15 pm - 8:55 am
PHL
-
FRA
31h 40m
1 stop
Multiple Airlines Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$688Multiple Airlines
Tue, Jan 5 - Tue, Jan 19
Multiple Airlines Logo
9:15 pm - 7:15 am
PHL
-
FRA
28h 00m
1 stop
Multiple Airlines Logo
6:30 am - 3:50 pm
FRA
-
PHL
15h 20m
1 stop
$689Multiple Airlines
Fri, Aug 28 - Fri, Sep 11
Multiple Airlines Logo
9:12 am - 5:45 am
PHL
-
FRA
14h 33m
1 stop
Multiple Airlines Logo
12:30 pm - 10:32 pm
FRA
-
PHL
16h 02m
1 stop
$691Multiple Airlines
Tue, Aug 25 - Tue, Sep 8
Multiple Airlines Logo
9:25 am - 5:45 am
PHL
-
FRA
14h 20m
1 stop
Multiple Airlines Logo
12:30 pm - 8:00 pm
FRA
-
PHL
13h 30m
1 stop
$694Multiple Airlines
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$251
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Philadelphia to Frankfurt Airport

When to book flights from Philadelphia to Heidelberg

Are your dates flexible? Find out the best times to travel from Philadelphia to Heidelberg based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Philadelphia to Heidelberg

  • Which airports will I be using when flying from Philadelphia to Heidelberg?

    When flying out of Philadelphia you’ll be using Philadelphia. Heidelberg does not have its own airport so you’ll be flying into nearby Frankfurt am Main airport, which is 44.6 mi away.

  • How long does a flight from Philadelphia to Heidelberg take?

    Direct flights cover the 3,935 miles separating Philadelphia and Heidelberg in about 7h 55m.

  • How many flights are there between Philadelphia and Heidelberg?

    5 direct flights run between Philadelphia and Heidelberg on a daily basis. On average, there are about 36 departures each week.

  • What’s the cheapest day of the week to fly between Philadelphia and Heidelberg?

    Consider leaving on a Sunday and avoid Thursdays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Mondays and the most expensive ones on Wednesdays.

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

    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 Heidelberg.

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

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

    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 Heidelberg with an airline and back to Philadelphia with another airline.

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

    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 Heidelberg from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Philadelphia to Heidelberg?

    In the last 5 days, the cheapest one-way ticket between Philadelphia and Heidelberg found on KAYAK was with Lufthansa for $511. Aer Lingus offered a round-trip connection from $408 and Scandinavian Airlines from $593.

Top tips for finding cheap flights from Philadelphia to Heidelberg

  • There is no airport in Heidelberg. Instead, you’ll be flying into Frankfurt Airport when flying between Philadelphia and Heidelberg.
  • The cheapest flight from Philadelphia to Heidelberg was found 60 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is January.

Reviews of the top 5 airlines serving Philadelphia to Heidelberg

 
Need help choosing which airline to fly with from Philadelphia to Heidelberg? 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.
7.8
Discover AirlinesOverall score based on 32 reviews
8.2Crew
6.5Entertainment
6.9Comfort
7.6Boarding
6.3Food
Airline reviews

I’ve never heard of discover airlines but will definitely be on the lookout for future flights. Everything about the trip was perfect. The staff were exceedingly friendly and helpful. The only critique; there was a delay and gate change and this fact was NOT well published! My eTicket was NEVER updated with the new flight details. We ran the whole way from our connecting flight only to find that our flight was delayed. Very frustrating. Additionally, there was NO announcement regarding the root cause of the delay. The uncertainty about the cause of the delay contributes to the overall frustration. One other small matter onboard; one of the toilets was unavailable (or perhaps malfunctioning) and NO explanation was given nor was any workaround explained. It would have been less frustrating if they announced why the toilet was lock and explained the alternatives in detail. That way the foot traffic congestion could have been minimized.

10.0 ExcellentAnonymous, Oct 2025
FRA - PHL
Read more Discover Airlines reviews

I’ve never heard of discover airlines but will definitely be on the lookout for future flights. Everything about the trip was perfect. The staff were exceedingly friendly and helpful. The only critique; there was a delay and gate change and this fact was NOT well published! My eTicket was NEVER updated with the new flight details. We ran the whole way from our connecting flight only to find that our flight was delayed. Very frustrating. Additionally, there was NO announcement regarding the root cause of the delay. The uncertainty about the cause of the delay contributes to the overall frustration. One other small matter onboard; one of the toilets was unavailable (or perhaps malfunctioning) and NO explanation was given nor was any workaround explained. It would have been less frustrating if they announced why the toilet was lock and explained the alternatives in detail. That way the foot traffic congestion could have been minimized.

Basically a low cost airline, with very small seats, mediocre food and staff not particularly nice. Not a pleasant flight

Plane was old and small. Crew was not very friendly and didn’t check in much or offer water more than 2 times over a 8 hour flight.

We were on a full-service fare as part of a long-haul trip so it was disappointing to be on such a no-frills flight (no meals/hot drinks/entertainment) especially for a 3.5hr flight, at the start of a long trip. The crew however we’re lovely & friendly.

You cancelled my flight and didn't arrange another. Sent no info except YOUR FLIGHT HAS BEEN CANCELLED. HERES WHAT TO DO NEXT. and the rest of the email was blank???

The first flight was delayed. We missed the second flight, which was rebooked 9 hours later. We missed all our arrangements for the first day of vacation.

Old plane, food not that great - lacked taste. Crew was nice but strict.

Terrible airlines, kept lying to me about the fact that my connection flight was cancelled. Left me hanging until last min. NEVER AGAIN

Mediocre. Maybe due to Economy light. Staff was great. Space shrunk, not for me, and definitely not for Vikings. Food was decent. Assistance lagging. There was a possibility to upgrade to Premium economy, however my bid was immediately classified as low and not even considered (though well over minimum bid). Thus I was no bleeding dry.

Upon departing and landing, the man seating in front of me had his seat leaning back. Taking off nobody told him anything. Landing someone from the crew said something but the passenger ignored him and nobody followed up. Felt a bit unsecured. If this that is some of the basics are missed, what else was overlooked?

On time, reasonably comfortable for economy, decent food. All in all a very good experience.

Every flight got canceled or delayed. Customer service was awful.

They lost my luggage and there is no update, no luggage and no hope that they will find it. It has been 26 hours since we landed

A Lufthansa flight operated by SAS with a jettime plane. Fight was nice, no food but free tea and coffee.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Smoothly flight, pleasant flight attendants. I wish there were better food choices.

A three (3) hour flight should have meal service in First Class, not just potato chips!

Flight was on time, crew were excellent. For some reason our originally selected seats were changed. We had to re-choose our seats when we checked in online and options were limited. One of our two checked bags we placed on the wrong carousel. It was only be shear luck that I saw it. That cost us 20 minutes of wasted time. So much for the “priority” tags. They are meaningless, and have been ever since they were implemented. I wish you would do the save some money and stop using them.

I flew Aer Lingus Business class for the first time. Having flown economy a few times, I was familiar with the airline, and happy enough with economy. I’ve certainly been in nicer economy airlines before, but Aer Lingus is usually very reasonable, and I find the staff to be kind and have an Irish sense of humor and accommodation. The business experience was good, in that you got superior service to the back, lay down seats, better food and drinks, and more attentive service. However, the plane was a bit older, the WiFi was slow(not Starlink) and the pods were too close to one another for privacy, or function. When the Oder lady to the left of me fell asleep(fully reclined) there was no way for me to escape without having to wake her and put her seat all the way up. That lead to me being stuck with luggage I couldn’t put away in a cramped(for business) space, and no way to use the restroom for almost the whole 8 1/2 hour trip. I ended up trying to sleep with a large backpack blocking my feet. The food was good for plane food, but not great. The drinks were great, shame I couldn’t have had more, but I’d have peed myself. I love a window, but next time maybe an isle seat. Overall, the experience was good, not great, but an expensive good experience during which I got zero sleep. I’d do it again, but it’d have to be a deal.

The direct flight was a superb idea; please continue. The seats were less than comfortable for such a long flight.

We missed that flight, and I am hoping that we will got the refund. It was very confusing to figure out about Aer Lingus operated by American Airlines. Then we bought another more expensive ticket to travel.

The free WiFi was great so I could stream movies during the flight. I would like to have movies available instead of on my device. Thanks!

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

Horrible. I had to wait in Dublin for 4 hours for the next connecting flight which took my to London and than i had to wait 3 hours for the flight to Dusseldorf

Was not aware that Aer Lingus was like the cut-rate services in the states, with no food or beverage (other then 3.50 Euro coffee) and no screens for entertainment. Was a great flight, but not much in the way of services.

I didn’t realize Aer Lingus was a “nickel and dime” kind of airline where you had to separately buy all the amenities you wanted. The push to purchase duty-free beauty products was off-putting. And our row had the least amount of leg room I’ve ever dealt with on a flight.

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Booked Economy but it translated to economy light for Lufthansa so now we are stuck paying an extra $75 per person both ways for our checked bags. If I had known that, I would have never booked these tickets because it came out to be more than other options. The booking in the kayak side clearly says Economy and has a link to the inormation for Lufthansa which states Economy included a checked bag. Super annoyed about that.

Flight was a little late. The crew was courteous, food ok

Very nice. Crew was excellent and our seats had great legroom which we paid extra for so I highly recommend this option when flying internationally.

Check in was great. Boarding seemed less organized. Flight was good.

My flight was canceled. New flight is 40 hours later and I still didn’t get the flight from Frankfurt to Zagreb.

Meals were nice are abundant, the staff on both flights were personable and well trained

Budget airline feeling. Bad food, no drinks stingy to give even water

The transatlantic leg was on Discover Airlines. I’m 6’2” and the extra leg room seat was acceptable, the seat it self was moderately comfortable (slightly softer than a church pew). The food was a standard economy fare. Frankfurt to Prague leg was on Lufthansa the business class was as advertised 10 across the board.

Recent movies and music availability like it used to be

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

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