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WBU to GRB: distance & flight time
Boulder (Boulder Municipal Airport) → Green Bay (Austin Straubel International Airport)
924 mi
1,488 km · 803 nm
2h 29m
estimated nonstop flight time
+1h
time difference · heading northeast
See live WBU→GRB fares Phone-only fares on this route — call free
Flight time details
924 miles nonstop takes roughly 2h 29m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- GRB — Austin Straubel International Airport · Green Bay, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
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
Frequently asked questions
How far is WBU from GRB?
The flight distance from Boulder (WBU) to Green Bay (GRB) is 924 miles (1,488 km, 803 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to GRB?
A nonstop flight takes about 2h 29m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from WBU to GRB?
Nonstop service on WBU–GRB depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 29m nonstop estimate.
What is the time difference between Boulder and Green Bay?
Green Bay is 1 hour ahead of Boulder.
What is the cheapest way to fly from WBU to GRB?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–GRB that never appear on search engines, with no booking fees.
Why are some WBU to GRB fares phone-only?
Consolidator contracts let us sell certain WBU–GRB tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.