Ability to read S3 buckets with vpc flow data?

It seems that the aws api limits you to about the last 4 hours worth of data. How hard would it be to look at vpc flows logs exported to an s3 bucket? They store the flow data as an unstructured compressed (and possibly encrypted) text file within a directory structure. This would make it much easier for the system to look at more flow data without the added expense of an api call. I am enclosing an example table structure that I used to do sql:

CREATE TABLE "public"."vpc" (

"time" timestamp NOT NULL,

"version" integer NOT NULL,

"account" text NOT NULL,

"interface" text NOT NULL,

"srcaddr" inet,

"dstaddr" inet,

"srcport" integer,

"dstport" integer,

"protocol" int,

"packets" bigint,

"bytes" bigint,

"start" int,

"end" int,

"action" text,

"log-status" text

) WITH (oids = false);

Here is an example single line (uncompressed)

2018-07-26T21:01:11.000Z 2 678049594014 eni-0foobar 10.111.15.10 12.16.612.124 35136 2100 6 2 104 1532638871 1532638930 ACCEPT OK