There are no nonstop flights between Glasgow (GLA) and Detroit (DTW). All itineraries require one connection (sometimes two).
| Connection Hub | Airlines | Typical Total Time | Notes |
|---|---|---|---|
| London Heathrow (LHR) | British Airways / Delta / Virgin Atlantic | 11–13 hrs | Best frequency; BA/DL joint venture. |
| Amsterdam (AMS) | KLM / Delta | 11–13 hrs | SkyTeam hub; efficient transfer. |
| Paris (CDG) | Air France / Delta | 11–14 hrs | SkyTeam. |
| Dublin (DUB) | Aer Lingus | 12–14 hrs | US Preclearance in DUB (arrive as domestic). |
| Reykjavik (KEF) | Icelandair | 12–15 hrs | Free stopover option. |
| New York (JFK/EWR) / Atlanta (ATL) / Boston (BOS) | Delta, American, United | 13–16 hrs | Double-connect (GLA→LHR→JFK→DTW) — avoid if possible. |
Allow 13–15 hours door-to-door. Pack for a long travel day.