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WBU to EAS: distance & flight time
Boulder (Boulder Municipal Airport) → San Sebastian (San Sebastian Airport)
4,961 mi
7,984 km · 4,311 nm
10h 12m
estimated nonstop flight time
+8h
time difference · heading northeast
See live WBU→EAS fares Phone-only fares on this route — call free
Flight time details
4,961 miles nonstop takes roughly 10h 12m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- EAS — San Sebastian Airport · San Sebastian, Spain
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 EAS
- BIQ · Biarritz-Anglet-Bayonne Airport15 mi away
- PNA · Pamplona Airport41 mi away
- BIO · Bilbao Airport56 mi away
- VIT · Vitoria/Foronda Airport57 mi away
Frequently asked questions
How far is WBU from EAS?
The flight distance from Boulder (WBU) to San Sebastian (EAS) is 4,961 miles (7,984 km, 4,311 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to EAS?
A nonstop flight takes about 10h 12m 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 Boulder and San Sebastian?
San Sebastian is 8 hours ahead of Boulder.
What is the cheapest way to fly from WBU to EAS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–EAS that never appear on search engines, with no booking fees.