| Date | Match | Stage | Time (UK) |
|---|
| Feb 23 | Bosnia & Herzegovina 0-5 Sweden | League A/B play-off, first leg | 12:00pm |
| Feb 23 | Serbia 1-1 Iceland | League A/B play-off, first leg | 3:00pm |
| Feb 23 | Hungary 1-5 Belgium | League A/B play-off, first leg | 4:45pm |
| Feb 23 | Croatia 0-3 Norway | League A/B play-off, first leg | 5:00pm |
| Feb 23 | Montenegro 0-2 Northern Ireland | League B/C play-off, first leg | 1:00pm |
| Feb 23 | Bulgaria 0-4 Ukraine | League B/C play-off, first leg | 2:00pm |
| Feb 23 | Latvia 0-3 Slovakia | League B/C play-off, first leg | 2:30pm |
| Feb 27 | Iceland 2-1 Serbia | League A/B play-off, second leg | 2:30pm |
| Feb 27 | Norway 5-0 Croatia | League A/B play-off, second leg | 5:00pm |
| Feb 27 | Belgium 5-1 Hungary | League A/B play-off, second leg | 7:00pm |
| Feb 28 | Sweden 5-0 Bosnia & Herzegovina | League A/B play-off, second leg | 5:30pm |
| Feb 27 | Ukraine 3-0 Bulgaria | League B/C play-off, second leg | 1:00pm |
| Feb 27 | Slovakia 6-0 Latvia | League B/C play-off, second leg | 5:00pm |
| Feb 27 | Northern Ireland 1-1 Montenegro | League B/C play-off, second leg | 7:00pm |
There were also seven promotion/relegation play-off matches that took place in February and these, too, were confirmed in the draw on Monday December 11. These were two-legged ties played in a home and away format.
The four third-placed teams in League A faced the four League B runners-up, with a place in League A the prize for the winner. Three third-placed teams in League B, except the lowest-ranked one which suffered automatic relegation, also faced the three best League C runners-up, with the winner getting a place in League B.
Belgium, Iceland, Norway and Sweden were the four League A third-placed teams while Bosnia & Herzegovina, Croatia, Hungary and Serbia were the four League B runners-up.
Further down the pyramid, Northern Ireland, Slovakia and Ukraine battled to keep their places in League B, with Bulgaria, Latvia and Montenegro the three best runners-up in League C. Slovenia were the lowest-ranked third-place team in League B and have been relegated to League C as a result.
These play-off matches were played in February, during the same international break as the Nations League finals.