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CAT to OSN: distance & flight time

Cascais (Cascais Airport) → Osan (Osan Air Base)

6,509 mi
10,475 km · 5,656 nm
13h 14m
estimated nonstop flight time
+8h
time difference · heading northeast
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Flight time details

6,509 miles nonstop takes roughly 13h 14m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.

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The two airports

Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.

Alternate airports can cut this fare

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Frequently asked questions

How far is CAT from OSN?

The flight distance from Cascais (CAT) to Osan (OSN) is 6,509 miles (10,475 km, 5,656 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from CAT to OSN?

A nonstop flight takes about 13h 14m 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 Osan?

Osan is 8 hours ahead of Cascais.

What is the cheapest way to fly from CAT to OSN?

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CAT–OSN that never appear on search engines, with no booking fees.
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