It's just not a problem. 2,000 people over 3 weeks in a country of 70,000,000 coming off a plane, walking through a barely staffed airport and going home into lockdown immediately.
Even if all 2,000 were infected (and lets be clear here that it's unlikely they are, because they've been in lockdown in the hotel rooms they've been stranded in with almost no contact with the outside world for 2 weeks) it wouldn't make a ripple in the overall numbers of deaths after the peak or spreading of the virus.
We went from having nearly 70,000,000 people out and about spreading the virus or being able to get infected, to maybe 7,000,000 at a stretch overnight when the lockdown came in. That's what causes the drop off from the lockdown. And you're worried about 2,000 people over 3 weeks.
Just think it through.