Even thus shall it be in the day when the Son of man is revealed. Remember Lot's wife. And he said unto them, Wheresoever the body is, thither will the eagles be gathered together. In considering the above verses, we can see without question that Jesus is telling His disciples what to expect at His advent. He compares conditions during both the Flood and the destruction of Sodom and Gomorrah to the end of time.
History is to have a rerun.
Rather, He was addressing the fate of those outside of the ark. It must therefore be emphasized that it is the lost, the unbelievers, who are addressed in Matthew 24 and Luke 17. It is they who did not regard the warnings of impending doom. The believers were in the ark, safe in the refuge that, under God's direction, had been prepared for them. The fate of the survivors is not mentioned in Matthew 24 and Luke 17 because they are not the ones at issue.