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GTF to SDU: distance & flight time
Great Falls (Great Falls International Airport) → Rio De Janeiro (Santos Dumont Airport)
6,440 mi
10,363 km · 5,596 nm
13h 6m
estimated nonstop flight time
+3h
time difference · heading southeast
See live GTF→SDU fares Phone-only fares on this route — call free
Flight time details
6,440 miles nonstop takes roughly 13h 6m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- GTF — Great Falls International Airport · Great Falls, United States
- 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 GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 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 GTF from SDU?
The flight distance from Great Falls (GTF) to Rio De Janeiro (SDU) is 6,440 miles (10,363 km, 5,596 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GTF to SDU?
A nonstop flight takes about 13h 6m 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 Great Falls and Rio De Janeiro?
Rio De Janeiro is 3 hours ahead of Great Falls.
What is the cheapest way to fly from GTF to SDU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GTF–SDU that never appear on search engines, with no booking fees.