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RFD to CAT: distance & flight time
Rockford (Chicago Rockford International Airport) → Cascais (Cascais Airport)
4,039 mi
6,500 km · 3,510 nm
8h 23m
estimated nonstop flight time
+6h
time difference · heading northeast
See live RFD→CAT fares Phone-only fares on this route — call free
Flight time details
4,039 miles nonstop takes roughly 8h 23m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- RFD — Chicago Rockford International Airport · Rockford, 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 RFD
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 RFD from CAT?
The flight distance from Rockford (RFD) to Cascais (CAT) is 4,039 miles (6,500 km, 3,510 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RFD to CAT?
A nonstop flight takes about 8h 23m 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 Rockford and Cascais?
Cascais is 6 hours ahead of Rockford.
What is the cheapest way to fly from RFD to CAT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RFD–CAT that never appear on search engines, with no booking fees.