Philadelphia to Singapore Flights (PHL to SIN): One-Stop Routings, Travel Time and Changi Tips

A one-stop trip, with several good hubs to choose from

There is no nonstop between Philadelphia and Singapore. Singapore Airlines flies nonstop to the US from New York JFK, Newark, San Francisco, Los Angeles and Seattle, but not from Philadelphia, so every PHL to SIN itinerary connects once. The good news is that Philadelphia has more long-haul choices than its size suggests, and several of them line up well with Singapore.

As of recent schedules, the realistic one-stop options are:

• Qatar Airways via Doha. Qatar flies nonstop from Philadelphia to Doha and onward to Singapore. One ticket, one airline, and a connection in a single terminal built for exactly this kind of transfer.
• American and British Airways via London Heathrow. Both fly Philadelphia to London; British Airways and Singapore Airlines fly London to Singapore. Heathrow adds a terminal change for some combinations, so check the connection time.
• Lufthansa via Frankfurt. Lufthansa flies Philadelphia to Frankfurt, and both Lufthansa and Singapore Airlines fly Frankfurt to Singapore.
• United via Newark or San Francisco. United flies San Francisco to Singapore nonstop, and Singapore Airlines flies from Newark and San Francisco. A short domestic hop plus one of the longest flights in the world.
• American and Japan Airlines via Tokyo. Usually two stops from Philadelphia, because the Tokyo flights leave from American's bigger hubs, so this is a fallback rather than a first choice.

If the fares are close, the Doha routing tends to have the simplest transfer and the Newark or San Francisco routing the fewest total hours in the air.

Distance and total travel time

The great-circle distance from PHL to SIN is roughly 9,600 miles (about 15,400 km). Singapore is almost exactly on the far side of the globe from the US East Coast, which is why the Newark and JFK nonstops are among the longest flights anywhere.

Plan on 20 to 26 hours door to door with one connection. Via Doha, the Philadelphia to Doha leg is around 12 to 13 hours and Doha to Singapore about 7.5 to 8. Via London or Frankfurt, the Atlantic leg is 7 to 8 hours and the Asia leg 12 to 13. Via the US West Coast, the domestic hop is about 6 hours and the transpacific leg 16 to 17. Coming home, the westbound long legs run an hour or two longer against the wind.

Whichever way you go, you will cross a lot of time zones in a single day, so pick a routing where the long leg falls overnight on Singapore time.

Leaving from Philadelphia

Philadelphia International groups most long-haul departures in Terminal A-West, where Qatar Airways, British Airways and Lufthansa check in, and American's international flights use A-West and A-East. The terminals are connected after security, so a connection from an American domestic flight does not need a second screening. Confirm your terminal the day before, because assignments shift seasonally.

For an evening long-haul departure, arriving three hours ahead is sensible; A-West security builds up in the late afternoon when the European and Gulf flights leave in a cluster. SEPTA's Airport Line train runs from Center City to every terminal, and the ride is about 25 minutes. Parking and ride-hailing follow the usual airport pattern, with the economy lot linked by shuttle.

Arriving at Changi and getting into the city

Changi has four passenger terminals linked by the Skytrain and walkways. Singapore Airlines uses Terminals 2 and 3, Qatar Airways has typically used Terminal 1, and other airlines are spread across the four. Immigration is fast if you have completed the SG Arrival Card online within three days of arriving; automated lanes accept many foreign passports.

Changi is about 20 km east of the city centre, and the options are all good:

• MRT. Changi Airport station sits between Terminals 2 and 3; change at Tanah Merah for the East West Line into town, around 45 minutes to the centre. Terminals 1 and 4 are a Skytrain or shuttle ride from the station.
• Taxi or ride-hailing. 20 to 30 minutes to the central hotel districts outside the rush, with surcharges late at night and from certain pick-up points.
• Airport shuttle and city buses. A shared shuttle serves most downtown hotels, and public buses run from each terminal's basement.

Jewel, the mall and garden complex attached to Terminal 1, is worth an hour if you have a long layover or an early arrival before check-in.

Entry rules and the SG Arrival Card

As of recent rules, US passport holders can visit Singapore for tourism without a visa, with the length of stay set at the border, usually up to 90 days. Everyone must submit the SG Arrival Card electronically in the three days before landing; the form is free on the Immigration and Checkpoints Authority website, and the airline may ask to see the confirmation.

Singapore is strict about what you bring in. Chewing gum, e-cigarettes and vaping products are prohibited, and some medications need prior approval. Check the official customs and Health Sciences Authority pages before you pack, and carry prescriptions in their original packaging.

When to fly

Singapore sits almost on the equator, so there is no cool season: expect heat and humidity year-round, with heavier rain during the northeast monsoon from November to January. Weather rarely drives the choice of dates; demand does.

Fares from Philadelphia are highest in the US summer holidays, over Christmas and New Year, and around Chinese New Year in late January or February, when the region travels. The Singapore Grand Prix weekend in autumn fills hotels more than planes. Late February to May and late August to early November are the quieter windows. Because the route is always a connection, booking two to four months ahead usually gives you a choice of hubs at a sensible fare.

Time difference and jet lag

Singapore is UTC plus eight with no daylight saving. That puts it 13 hours ahead of Philadelphia in winter and 12 hours ahead in summer, which is close to a full day-night reversal. Jet lag is heavy in both directions and there is no easy way round it.

What helps most is choosing a routing where the long leg lands in Singapore in the evening or early morning, then staying awake until a local bedtime. Daylight is strong and available all year, so a walk on the first morning resets you faster than a dark hotel room.

What travellers on this route get wrong

The usual errors are forgetting the SG Arrival Card until the queue at Changi, packing vaping products that are confiscated on arrival, and booking a Heathrow connection too tight for a terminal change. A less obvious one is assuming the shortest flight time is the best itinerary; a Doha or Frankfurt connection that lands in Singapore in the evening often beats a faster routing that arrives at noon with a hotel that will not let you in until mid-afternoon.