I would look into a Uniden Bearcat SR30C $96.00 on Amazon or Uniden Bearcat BC125AT $108.00 on Amazon. If you also plan in listening in to Police and Fire then a scanner that receives digital transmissions will be more expensive. The two models I mentioned are analog only.
I could not find a specific antenna just for airband. This one is not too expensive: https://smile.amazon.com/Anteenna-TW-999BNC-20-1300MHz-Connector-Frequency/dp/B075QCJM6S/ref=sr_1_4?crid=D0M5PMWI03XD&keywords=radio+scanner+antenna&qid=1649341463&sprefix=radio+scanner%2Caps%2C141&sr=8-4