Episodes
184
9 seasons
184 episodes · 9 seasons · 138.0 hours to binge
184
9 seasons
138.0 h
5d 18h
5 days
non-stop
7.8/10
11,499 votes
The Flash runs to 184 episodes across 9 seasons, at roughly 45 minutes each. Watching every episode back to back is 138.0 hours of pure run time — that's 5 days and 18 hours without a single break.
More realistically, at two episodes a night you'll finish in about 92 days. That's 17.3 full 8-hour work days of screen time. Use the planner below to pick your own pace and get an exact finish date.
138.0 h
Pure run time
92 days
At 2 episodes/day
45 min
Per episode
Day 92: 100% done (184 of 184 episodes)
20.4
on average
15.3 h
on average
8,280
5 days non-stop
At 138.0 hours, The Flash is longer than 94% of every series tracked here — making it true marathon material. Within the Drama genre the average is 48.5 hours, so The Flash sits above that.
The Flash is very well rated at 7.8/10 from 11,499 votes. With 138.0 hours of total run time it's a genuine long-haul marathon — plan accordingly before you press play.
All 184 episodes of The Flash add up to 138.0 hours of pure run time — that's 5 days and 18 hours non-stop.
The Flash has 184 episodes across 9 seasons, averaging about 45 minutes per episode.
At 1 episode a day it takes 184 days, at 2 episodes a day 92 days, and at a marathon pace of 8 a day just 23 days.
The Flash is rated 7.8/10 from 11,499 votes. Budget 138.0 hours if you want to watch the whole thing.
Episodes, seasons and rating come from TMDB (as of 2/12/2026). The Flash had no official per-episode runtime on file, so the 45 minutes shown are a genre-based estimate.
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