أحسن الله إليكم I will be traveling, in the US, if I’m traveling from New York to California, before my flight I must pray fajr, once I land in California ان شاء الله I’ll be on the west coast where fajr time will come again half an hour after I land, must I pray it again? جزاكم الله خيرا

Ustadh AbdulAziz al-Haqqan

No, you have already prayed fajir so u don't pray it again.