The two airports aren’t interchangeable
JFK and EWR (Newark) both serve "New York City" from an airline standpoint, but they’re run by different airport authorities, have different carrier mixes, and charge meaningfully different fees. For an international round-trip, the price gap between the two can be $50 or it can be $300 — depending on the route, the time of year, and how you’re getting to the airport.
EWR is usually $50–$100 cheaper on the headline fare
Looking at the routes we track (JFK/EWR to CAI, LHR, CDG, FCO, BCN, NRT, DXB, GRU, BKK), Newark’s base fare is on average $70 cheaper than JFK’s for the equivalent itinerary in any given week. Why? Newark has one dominant carrier (United) and fewer overlapping competitors, but it’s also a less-attractive airport for through-travelers, so airlines discount marginally.
For most of the world (Europe, Middle East, Asia), EWR is United-heavy. JFK is split between Delta, JetBlue, American, and a long tail of foreign flag carriers. If your route has a foreign carrier nonstop (EgyptAir to Cairo, Cathay to Hong Kong, Singapore Airlines), that flight will be from JFK and EWR will only offer connections.
AirTrain fees: a hidden $14 round-trip
Both airports have an AirTrain people-mover connecting to the regional rail system. JFK’s AirTrain costs $8.50 each way ($17 round-trip). EWR’s is $9 each way ($18 round-trip). That’s on top of the NJ Transit or LIRR ticket to Penn Station, which adds another $13–$15 each way to EWR or $11 each way to JFK.
Net of ground transit: JFK is about $40 round-trip from midtown via public transport; EWR is about $52. The headline $70 fare advantage at EWR drops to roughly $58 once you factor in ground transport. Still real money, but smaller than the search engines suggest.
Taxi and rideshare math
A flat-rate yellow cab from midtown to JFK is $70 plus tolls and tip — about $90 total. To EWR, you’re paying $50–$80 by Uber/Lyft (surge-dependent) plus tolls — about $80 total when traffic is reasonable. Either way it’s meaningful, but for a family of four taking a rideshare instead of public transit, that’s a one-way fixed cost roughly equal across both airports.
Where it matters: traffic. EWR has noticeably worse rush-hour congestion (especially Friday evenings westbound) because of the New Jersey Turnpike. JFK is a more predictable 60–75 minutes from midtown any time of day. If you have a 9pm international departure and you’re leaving Manhattan at 5pm on a Friday, JFK is the safer bet by 20+ minutes.
When EWR wins
You live in New Jersey, Brooklyn, or downtown Manhattan. You don’t care about flying United. You’re willing to take a one-stop itinerary. The route has both airports priced and the EWR option is $80+ cheaper.
When JFK wins
The nonstop is JFK-only (EgyptAir CAI, ANA NRT, El Al TLV, most of Asia). You’re on a tight schedule and want the most reliable ground-transport time. You have status with Delta, JetBlue, or American. You’re traveling with kids and want to minimize connection chaos.
Our default: track both, book whichever is cheaper that week
Cheapflight Tracker lets you watch JFK + EWR as a single route ("JFK,EWR → CAI"). That way every alert factors in both airports and tells you which is cheaper on the day. Most users find one airport wins for a stretch and then the other does — there’s no permanent answer.