AirHint found the following cheapest return flights from Pittsburgh (PIT) to Keflavik (KEF) in May 2026 (see full year).
Return flights
| 17 May - 23 May | Air France | ||
| 13 May - 17 May | Delta | ||
| 25 May - 29 May | Delta | ||
| 13 May - 17 May | Icelandair | direct | |
| 10 May - 13 May | Delta | ||
| 10 May - 13 May | Icelandair | direct |
Also check the deals for one-way flights from Pittsburgh to Keflavik in May.
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