Need help booking?
Unpublished phone-only deals available
ASM to SDU: distance & flight time
Asmara (Asmara International Airport) → Rio De Janeiro (Santos Dumont Airport)
6,140 mi
9,881 km · 5,335 nm
12h 30m
estimated nonstop flight time
-6h
time difference · heading southwest
See live ASM→SDU fares Phone-only fares on this route — call free
Flight time details
6,140 miles nonstop takes roughly 12h 30m gate to gate, flying southwest. 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
- ASM — Asmara International Airport · Asmara, Eritrea
- SDU — Santos Dumont Airport · Rio De Janeiro, Brazil
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 ASM
- MSW · Massawa International Airport40 mi away
- AXU · Axum Airport80 mi away
- MQX · Mekele Airport133 mi away
Near SDU
- GIG · Rio Galeão – Tom Jobim International Airport9 mi away
- QNV · Aeroclube Airport22 mi away
- SNZ · Santa Cruz Air Force Base35 mi away
- CFB · Cabo Frio Airport69 mi away
Frequently asked questions
How far is ASM from SDU?
The flight distance from Asmara (ASM) to Rio De Janeiro (SDU) is 6,140 miles (9,881 km, 5,335 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASM to SDU?
A nonstop flight takes about 12h 30m 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 Asmara and Rio De Janeiro?
Rio De Janeiro is 6 hours behind Asmara.
What is the cheapest way to fly from ASM to SDU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASM–SDU that never appear on search engines, with no booking fees.