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BOS to CAT: distance & flight time
Boston (General Edward Lawrence Logan International Airport) → Cascais (Cascais Airport)
3,175 mi
5,110 km · 2,759 nm
6h 42m
estimated nonstop flight time
+5h
time difference · heading east
See live BOS→CAT fares Phone-only fares on this route — call free
Flight time details
3,175 miles nonstop takes roughly 6h 42m gate to gate, flying east. 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
- BOS — General Edward Lawrence Logan International Airport · Boston, 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 BOS
- OWD · Norwood Memorial Airport15 mi away
- BED · Laurence G Hanscom Field16 mi away
- BVY · Beverly Municipal Airport16 mi away
- LWM · Lawrence Municipal Airport25 mi away
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 BOS from CAT?
The flight distance from Boston (BOS) to Cascais (CAT) is 3,175 miles (5,110 km, 2,759 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOS to CAT?
A nonstop flight takes about 6h 42m 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 Boston and Cascais?
Cascais is 5 hours ahead of Boston.
What is the cheapest way to fly from BOS to CAT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOS–CAT that never appear on search engines, with no booking fees.