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CAT to UGN: distance & flight time
Cascais (Cascais Airport) → Chicago (Waukegan National Airport)
3,976 mi
6,398 km · 3,455 nm
8h 16m
estimated nonstop flight time
-6h
time difference · heading northwest
See live CAT→UGN fares Phone-only fares on this route — call free
Flight time details
3,976 miles nonstop takes roughly 8h 16m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- CAT — Cascais Airport · Cascais, Portugal
- UGN — Waukegan National Airport · Chicago, United States
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 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
Near UGN
- ORD · Chicago O'Hare International Airport31 mi away
- ENW · Kenosha Regional Airport12 mi away
- PWK · Chicago Executive Airport21 mi away
- RAC · John H Batten Airport24 mi away
Frequently asked questions
How far is CAT from UGN?
The flight distance from Cascais (CAT) to Chicago (UGN) is 3,976 miles (6,398 km, 3,455 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CAT to UGN?
A nonstop flight takes about 8h 16m 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 Cascais and Chicago?
Chicago is 6 hours behind Cascais.
What is the cheapest way to fly from CAT to UGN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CAT–UGN that never appear on search engines, with no booking fees.