Crawley Town manager Mark Yates rued his side’s missed chances which proved costly.
Reds dominated before the break, however Luton took the lead through Josh McQuoid early in the second half.
Crawley responded ten minutes later with a Matt Harrold equaliser. But finally a mix-up at the back led to McQuoid pouncing for a late winner.
Yates said: “We played some good stuff and could have gone in two, three four-up but didn’t.
“We had enough chances to win a couple of games. The first half we had some real good chances and just didn’t take them.
“The second half we didn’t quite get the intensity we played in the first and I understand that.
“It looked like we were going to take them back to their place for a replay - you would think we had a chance there.”
Yates believes his side played one of their best displays of the season in the first half.
He said: “You don’t always get what you deserve in football and we haven’t today. But credit to them (Luton) for sticking at it and wish them luck in the next round.”
Yates criticised his players for allowing the Hatters to score both their goals.
He moaned: “The lads allowed too much room to get a shot in and score a goal, which is disappointing.
“One hoof down the field, we have not reacted, a cross and a ricochet later we are a goal down and are out of the competition.”
For more of Jon and Joe Rigby’s photos:
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