Isn't the FIFA alternating between Europe and the Rest of the World? That would put Europe up for 2026 (it has been quite a while since the last WC in the UK or in Scandinavia). North America might have a go for 2030, but my feeling is - unless Qatar becomes a complete disaster, which can't be ruled out - that they envisage Africa for 2030 (Morocco?). 2034 is probably Turkey, unless they get the Olympics before...
FIFA has a rule now that a confederation can't host more than every third time. Since Russia has 2018, a UEFA member can't host until 2030, tho Uruguay will argue for the centennial World Cup to be held where it all began. 2030 certainly will go to either Europe or an Uruguayan bid. If North America doesn't get it in 2026, we'll likely have to wait until 2034.