Eureka: Season 4

This season started on July 9, 2010. The table lists episodes with recorded air dates up to September 28, 2026.

Ep	Title and air date	My place
1	Founder's DayJuly 9, 2010 · 44 min
2	A New WorldJuly 16, 2010 · 44 min
3	All the RageJuly 23, 2010 · 44 min
4	The Story of O2July 30, 2010 · 44 min
5	Crossing OverAugust 6, 2010 · 44 min
6	MomstrosityAugust 13, 2010 · 44 min
7	StonedAugust 20, 2010 · 43 min
8	The Ex-FilesAugust 27, 2010 · 44 min
9	I'll Be Seeing YouSeptember 10, 2010 · 44 min
10	O Little TownDecember 7, 2010 · 44 min
11	Lift OffJuly 11, 2011 · 44 min
12	RepriseJuly 18, 2011 · 44 min
13	GlimpseJuly 25, 2011 · 44 min
14	Up in the AirAugust 1, 2011 · 44 min
15	Omega GirlsAugust 8, 2011 · 44 min
16	Of Mites and MenAugust 15, 2011 · 44 min
17	Clash of the TitansAugust 22, 2011 · 44 min
18	This One Time at Space Camp...August 29, 2011 · 44 min
19	One Small Step...September 12, 2011 · 44 min
20	One Giant Leap...September 19, 2011 · 44 min
21	Do You See What I SeeDecember 6, 2011 · 43 min