Sources (12)

1 Google Data, U.S., Mar. 2016.
2 Google/Ipsos MediaCT, “The 2015 Traveler's Road to Decision,” base: U.S. leisure travelers, n=2,477, Aug. 2015.
3 Google/Ipsos MediaCT, “The 2015 Traveler's Road to Decision,” base: U.S. business travelers in 2014, n=1,220; base: U.S. business travellers in 2015, n=1,279, Aug. 2015.
4 Google Hotel Ads Data, U.S., Feb.–Apr. 2016.
5 Google Hotel Ads Data, U.S., Feb. 2015–Apr. 2016.
6 Google/Ipsos MediaCT, “The 2015 Traveler's Road to Decision,” base: U.S. leisure travelers that own 2+ devices, n=768, Aug. 2015.
7 Google/Ipsos MediaCT, “The 2015 Traveler's Road to Decision,” base: U.S. leisure/business travelers, n=1,330, Aug. 2015.
8 Google/Phocuswright, leisure traveler study, base: U.S. leisure travelers, n=930, Oct. 2015.
9 Google/Ipsos MediaCT, “The 2015 Traveler's Road to Decision,” base: U.S. leisure/business travelers, n=599, Aug. 2015.
10 Google/Ipsos Connect, travel playbook omnibus, base: U.S. travelers 18+ who use a smartphone, n=1,304, Apr. 2016.
11 Google Internal Data, U.S., Mar. 2016.
12 Google/Ipsos Connect, travel playbook omnibus, base: U.S. travelers 18+ who have done research on their smartphone, n=890, Apr. 2016.