Brett Ormerod's 54th minute equaliser was enough to see Blackpool set-up two play-off dates with Nottingham Forest following a 1-1 draw with Bristol City.
An incredible regular season was capped off as the Seasiders guaranteed sixth place after coming from behind to cancel out Nicky Maynard's early strike for the Robins. The fact that Swansea failed to beat Doncaster confirmed Pool's place.
Ian Holloway named an unchanged side for the game but was able to welcome back Ben Burgess onto the substitutes bench.
Over 12,000 spectators packed into Bloomfield Road and nearly saw Ian Evatt open the scoring, the centre-back was prevented from giving Pool an early lead after some great defending at the far post from Bristol City.
The Seasiders were all over the visitors and had another great opportunity to score moments later, Charlie Adam managed to chest the ball down following another defensive header and just struck the ball past the post.
Bristol City were to take the lead against the run of play though as striker Nicky Maynard hit a dipping volley from outside of the area that looped over Matt Gilks (16).
BLACKPOOL 0 BRISTOL CITY 1
The Seasiders looked to find a response immediately, Brett Ormerod finding space down the right and firing straight into the arms of Dean Gerken.
The equaliser nearly came from an inswinging David Vaughan corner but Gerken managed to tip it on to the post before his defence could clear. The visitors then had a chance of their own to try and double the lead but Marvin Elliott's effort found the side netting.
David Vaughan became the next player to try for goal for the Seasiders but his 20-yard effort fell just past the post.
Bristol City were forced into an early change on the half-hour due to injury, Lee Johnson replacing Cole Skuse.
The noise level reduced somewhat inside Bloomfield Road as the Seasiders continued to find a way back into the fixture - but despite being a goal down, a play-off place was still assured due to Swansea drawing with Doncaster.
A late goalmouth scramble provided some excitement before the interval but with DJ Campbell and Gary Taylor-Fletcher seeing efforts blocked the Seasiders went in at half-time losing.
HALF-TIME SCORE - BLACKPOOL 0 BRISTOL CITY 1
DJ Campbell was forced off a minute into the second-half on the back of an injury he sustained just before the interval. Stephen Dobbie was the man who came on to replace him.
It didn't take long for the Seasiders to find themselves a way back in to the game as BRETT ORMEROD scored with a diving header from a Charlie Adam free-kick (54). It was the striker who had won the set-play to start with.
BLACKPOOL 1 BRISTOL CITY 1
Bloomfield Road was now rocking again as the Seasiders pushed forward for another, Stephen Dobbie went agonisingly close from just outside the area.
Brett Ormerod then had a chance to grab his second after racing onto a long ball but was prevented by the legs of Dean Gerken.
The visitors made their second substitution just after the hour by replacing Ivan Sproule with John Akinde.
Some neat interchange passing between Gary Taylor-Fletcher and Stephen Dobbie nearly resulted in the later giving the Seasiders the lead. The on-loan Swansea striker's effort narrowly avoided the top corner.
The Seasiders opted to make a double substitution with just under ten minutes remaining, Barry Bannan and Ben Burgess replacing Gary Taylor-Fletcher and David Vaughan.
The tempo of the game had dropped somewhat with only five minutes remaining on the clock but the Seasiders were keeping the ball in the opposition half and had Bristol City pegged back with a succession of corners.
Matt Gilks was forced into a fine diving save to prevent Jamal Campbell-Ryce with four minutes of added time to play. Ben Burgess then followed that up by going agonisingly close with a header at the other end.
The final whistle was greeted with jubilant scenes as news spread that Swansea had failed to beat Doncaster Rovers.
FULL-TIME SCORE - BLACKPOOL 1 BRISTOL CITY 1
Attendance: 12,296 (1,104 away)