By plane
Berthoud is closest to the Fort Collins Loveland Airport (http://www.ci.loveland.co.us/) IATA: FNL, which is north of the city, between Loveland and Fort Collins. Allegiant Air (http://www.allegiantair.com/) offers daily flights from here and Las Vegas. Getting from the airport to Berthoud generally requires a vehicle as taxis are uncommon in this part of Colorado.
Further away, but offering a wider range of national and international flights is Denver International Airport (http://www.flydenver.com/) IATA: DEN. From Denver, the drive takes about an hour north on I-25. The SuperShuttle (http://www.rideshamrock.com/) offers rides to Loveland for $32 per adult $10 per child. However, the traveler is responsible for the trip from Loveland to Berthoud.
By car
Berthoud is located north of Denver on I-25 between Loveland North of Berthoud and Longmont to the south.