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HHH to CAT: distance & flight time
Hilton Head Island (Hilton Head Airport) → Cascais (Cascais Airport)
3,938 mi
6,337 km · 3,422 nm
8h 11m
estimated nonstop flight time
+5h
time difference · heading northeast
See live HHH→CAT fares Phone-only fares on this route — call free
Flight time details
3,938 miles nonstop takes roughly 8h 11m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- HHH — Hilton Head Airport · Hilton Head Island, United States
- CAT — Cascais Airport · Cascais, Portugal
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near HHH
Near CAT
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)12 mi away
- AVR · Alverca Air Base21 mi away
- QLR · Monte Real Air Base80 mi away
- BYJ · Beja Airport / Airbase89 mi away
Frequently asked questions
How far is HHH from CAT?
The flight distance from Hilton Head Island (HHH) to Cascais (CAT) is 3,938 miles (6,337 km, 3,422 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HHH to CAT?
A nonstop flight takes about 8h 11m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Hilton Head Island and Cascais?
Cascais is 5 hours ahead of Hilton Head Island.
What is the cheapest way to fly from HHH to CAT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HHH–CAT that never appear on search engines, with no booking fees.