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GRB to KEF: distance & flight time
Green Bay (Austin Straubel International Airport) → Keflavik (Keflavik International Airport)
2,805 mi
4,514 km · 2,437 nm
5h 58m
estimated nonstop flight time
+5h
time difference · heading northeast
See live GRB→KEF fares Phone-only fares on this route — call free
Flight time details
2,805 miles nonstop takes roughly 5h 58m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- GRB — Austin Straubel International Airport · Green Bay, United States
- KEF — Keflavik International Airport · Keflavik, Iceland
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 KEF
- RKV · Reykjavik Airport22 mi away
- GUU · Grundarfjörður Airport72 mi away
- VEY · Vestmannaeyjar Airport81 mi away
- PFJ · Patreksfjörður Airport116 mi away
Frequently asked questions
How far is GRB from KEF?
The flight distance from Green Bay (GRB) to Keflavik (KEF) is 2,805 miles (4,514 km, 2,437 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRB to KEF?
A nonstop flight takes about 5h 58m 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 Green Bay and Keflavik?
Keflavik is 5 hours ahead of Green Bay.
What is the cheapest way to fly from GRB to KEF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRB–KEF that never appear on search engines, with no booking fees.