Are there nonstop flights from Southend-on-Sea (SEN) to Buenos Aires (EZE)?

No. The fastest connection is via Paris, about 14h 26m of total flying time.

What is the fastest connection from Southend-on-Sea (SEN) to Buenos Aires (EZE)?

via Paris ≈ 14h 26m, via Barcelona ≈ 14h 41m, via Amsterdam ≈ 14h 50m (estimated flying time, excluding layovers).

London Southend Airport (SEN) to Ezeiza International Airport - Ministro Pistarini (EZE)・11,201 km

No nonstop flights. The fastest connection is via Paris (CDG), about 14h 26m of flying time (layover not included).

None.

3 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.