Hull eased their fears of relegation from the Premier League as George Boyd's header earned a 1-0 home win against Swansea on Saturday.
Steve Bruce's team moved nine points clear of the bottom three after Boyd bagged the winner in the first half at the KC Stadium.
The Tigers will play in their first FA Cup semi-final since 1930 when they take on Sheffield United at Wembley next weekend and will do so with their top-flight status almost certainly assured.
With five league games remaining it therefore appears unlikely Hull will be caught, even if they do have a tough run-in that includes matches against Arsenal, Manchester United and Everton.
Swansea are six points above the bottom three and can't be certain of survival just yet after their 11th successive away league game without a win.
With Wembley in mind, Bruce exercised caution in his team selection, resting key midfielder Tom Huddlestone due to a slight back strain. Alex Bruce also missed out with Boyd and Maynor Figueroa slotting into a switched 4-4-2 formation.
The hosts were quickly into their stride and Shane Long ran on to Figueroa's perfectly-weighted cross to the back post, only for Michel Vorm to turn his side-footed volley wide.