AirHint found the following cheapest return flights from Denver (DEN) to Glasgow (GLA) in January 2026 (see full year).
Return flights
| 11 Jan - 26 Jan | Delta | ||
| 07 Jan - 14 Jan | Icelandair | ||
| 09 Jan - 16 Jan | British Airways | ||
| 19 Jan - 29 Jan | British Airways |
Also check the deals for one-way flights from Denver to Glasgow in January.
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