f you're thinking about how much it'll cost, it'll vary depending on the airline. From America to the UK I know British Airways and Virgin Atlantic don't charge anything, Iberia (don't know what other arlines do America to Spain) charge 75 euros. They'll probably all want it boxed or in a bike bag (though I've seen an assembled bike on top of a pile of luggage at an airport) Probably best to check the airline's website and if that's not clear about it phone or email them.
Bet it's probably a nightmare if it's not a direct flight or there's more than one airline involved though, but I dunno.
f you're thinking about how much it'll cost, it'll vary depending on the airline. From America to the UK I know British Airways and Virgin Atlantic don't charge anything, Iberia (don't know what other arlines do America to Spain) charge 75 euros. They'll probably all want it boxed or in a bike bag (though I've seen an assembled bike on top of a pile of luggage at an airport) Probably best to check the airline's website and if that's not clear about it phone or email them.
Bet it's probably a nightmare if it's not a direct flight or there's more than one airline involved though, but I dunno.