Alfons Sampsted

Breiðablik

Alfons started his career with local club Breiðablik in Kópavogur in 2015, playing a single cup game, before going on loan to Þór from Akureyri for the latter half of the season. In 2016, he played most of Breiðablik's games as they finished 6th in the 2016 Úrvalsdeild.

Norrköping

In January 2017, Alfons was transferred to Swedish club IFK Norrköping. He spent three seasons there without ever cementing his place, spending time on loan at IF Sylvia and Landskrona BoIS in Sweden and Breiðablik in Iceland.

Bodø/Glimt

In February 2020, Alfons joined Norwegian club Bodø/Glimt and was a key player in the 2020 season as the club won their first national title. There, he replaced former right-back Erlend Reitan who was on loan from Rosenborg.

Twente

On 27 December 2022, Alfons joined Dutch club FC Twente.

Birmingham City

On 12 August 2024, Alfons joined League One (third-tier) club Birmingham City on a season-long loan. The deal included an option to purchase. He made "a solid, no- nonsense debut" the next day as a second-half substitute in Birmingham's 1–0 EFL Cup win away to Charlton Athletic. Following a title-winning campaign, the English club exercised their purchase option at the end of the 2024–25 season.

Go Ahead Eagles

On 24 January 2026, Alfons returned to the Netherlands to join Go Ahead Eagles for an undisclosed fee.

As of 15 November 2020, Alfons is the highest-capped player of the Icelandic U21 national team with 30 games.

Club

As of match played 23 August 2026

International

As of match played 19 November 2024

Bodø/Glimt

Eliteserien: 2020, 2021 Birmingham City

EFL League One: 2024–25