Need help booking?
Unpublished phone-only deals available
RDU to SUS: distance & flight time
Raleigh-durham (Raleigh Durham International Airport) → Null (Spirit of St Louis Airport)
680 mi
1,094 km · 591 nm
1h 57m
estimated nonstop flight time
-1h
time difference · heading west
See live RDU→SUS fares Phone-only fares on this route — call free
Flight time details
680 miles nonstop takes roughly 1h 57m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- RDU — Raleigh Durham International Airport · Raleigh-durham, United States
- SUS — Spirit of St Louis Airport · Null, United States
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 RDU
- POB · Pope Field50 mi away
- RWI · Rocky Mount Wilson Regional Airport50 mi away
- FBG · Simmons Army Air Field52 mi away
- SOP · Moore County Airport56 mi away
Near SUS
- STL · St Louis Lambert International Airport16 mi away
- ALN · St Louis Regional Airport36 mi away
- BLV · Scott AFB/Midamerica Airport45 mi away
- JEF · Jefferson City Memorial Airport81 mi away
Frequently asked questions
How far is RDU from SUS?
The flight distance from Raleigh-durham (RDU) to Null (SUS) is 680 miles (1,094 km, 591 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RDU to SUS?
A nonstop flight takes about 1h 57m 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 Raleigh-durham and Null?
Null is 1 hour behind Raleigh-durham.
What is the cheapest way to fly from RDU to SUS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RDU–SUS that never appear on search engines, with no booking fees.