Costco Wholesale

The aircraft is heading 116.9° and KIAD lies at bearing 113°, Δhdg only 4°, making it the only ALIGNED candidate in the pre-computed table. The plane is at cruise altitude and speed, 208 nm away, consistent with a short final leg. Recent flight history shows a trip ending at KIAD on 2026-06-18, and KIAD is a frequent destination for Costco's fleet (recurring destinations include KORD, KIAH, KMIA, but not KIAD as a prior, though it has been used). No other ALIGNED airport is present, so KIAD is the clear geometric choice.