Need help booking?
Unpublished phone-only deals available
GRB to ALN: distance & flight time
Green Bay (Austin Straubel International Airport) → Alton/St Louis (St Louis Regional Airport)
399 mi
642 km · 347 nm
1h 31m
estimated nonstop flight time
—
time difference · heading south
See live GRB→ALN fares Phone-only fares on this route — call free
Flight time details
399 miles nonstop takes roughly 1h 31m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- GRB — Austin Straubel International Airport · Green Bay, United States
- ALN — St Louis Regional Airport · Alton/St Louis, 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 GRB
- ATW · Appleton International Airport25 mi away
- OSH · Wittman Regional Airport41 mi away
- MNM · Menominee Regional Airport50 mi away
- SBM · Sheboygan County Memorial Airport51 mi away
Near ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 mi away
Frequently asked questions
How far is GRB from ALN?
The flight distance from Green Bay (GRB) to Alton/St Louis (ALN) is 399 miles (642 km, 347 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRB to ALN?
A nonstop flight takes about 1h 31m 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 cheapest way to fly from GRB to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRB–ALN that never appear on search engines, with no booking fees.