Hailee Steinfeldand Josh Allenstill appear to be a thing ... 'cause the actress was spotted jetting from L.A. to Buffalo on Saturday just minutes after the QB beat the Chargers at SoFi Stadium.
It's unclear if the "Starving" singer -- who wore a black hoodie and a mask during her airport travels -- was in attendance for Allen's win over the Bolts while in the City of Angels, but given the time, date and place of her flight to New York ... it seems likely.
You'll recall, the two had a bit of a romantic dinner date in May that was captured on camera -- and a few weeks later, they were seen packing on the PDA while vacationing in Mexico.
The couple has somehow avoided much of the public eye since -- though her flight over the weekend sure appears to indicate they're still going strong.
Allen was previously in a long-term relationship with Brittany Williams ... but they broke up following his 2022 season. Steinfeld, meanwhile, haddated Niall Horan in the past, though they split in 2018.
If the two are indeed still an item, it seems she's been a bit of a good luck charm for the Buffalo signal-caller ... Allen's Bills have ripped off three wins in a row -- and could still come out with the AFC East crown at the end of the season.