Blackpool sealed a League One play-off final date with Yeovil as a 3-1 win at Bloomfield Road gave them a 5-2 aggregate victory over Oldham.
Blackpool celebrate their Tangerine dream of a Wembley date
Keith Southern set Blackpool on their way with a well-struck shot.
Andy Morrell raced away from a square Oldham defence to finish neatly and increase Blackpool's aggregate lead.
Matt Wolfendon threatened to set up a grandstand finish by forcing home a late goal but Keigan Parker curled home an exquisite third for Blackpool.
Trailing from the first leg, Oldham made the early running, backed by a near-gale whipping off the Irish Sea.
The first chance of the game fell to the Latics' Chris Porter, who got ahead of his marker to meet Andy Liddell's corner with a powerful header, which he directed wide.
But the first clear-cut chance went Blackpool's way, with Keigan Parker heading the ball back across goal from where Morrell retrieved it from a tight angle to hook the ball over Alan Blayney, only to see Will Haining scramble the ball off the line.
With the prospect of the ball blowing to Manchester if it was played above head height, Oldham tried to keep it on the deck but their strikers were unable to hold up the ball.
The wind played a supporting role as Blackpool went ahead to take a two-goal advantage in the tie.
Sean Gregan found it hard to judge a swirling high ball and his weak header fell for Morrell, who squared the ball to Southern. He took aim from 23 yards and Blayney's effort to keep the shot out was limp-wristed as the ball seemed to pass through his hands.
The experienced Liddell tried to rekindle Oldham and his cross picked out Paul Warne but he dumped a weak header into the grateful Paul Rachubka's arms from five yards out.
As half-time approached, Oldham desperately needed a goal to get back into the tie and a foul on Ritchie Wellens won them a free-kick in a promising position but the opportunity was wasted as Porter curled the set-piece wide.
Northern Soul moves from Oldham's Chris Taylor and Shaun Barker
Oldham maintained the pressure at the start of the second half and an eccentric piece of goalkeeping by Rachubka sparked a frantic scramble in the Blackpool goalmouth and, as the ball bounced up on to Ian Evatt's arms, referee Lee Probert rejected Oldham's screams for a penalty.
Parker had a chance to put the tie beyond Oldham's reach when he latched on to Morrell's flick - only to blast his shot wide.
Oldham probably realised it was not to be their day when Liddell's neat finish was wiped off by a borderline offside decision.
Blackpool sealed their place at Wembley with Morrell's 20th goal of the season. Wes Hoolahan caught Kelvin Lomax in possession and exposed Oldham's square defence to release Morrell, who neatly dinked the ball over Blayney.
Oldham pulled one back when Haining helped a corner kick goalwards and Wolfenden touched home a header for his first goal for Oldham.
The Latics had another goal ruled out for offside but Parker iced the cake with the best goal of the game, cutting in to curl an exquisite shot round Blayney.
Blackpool manager Simon Grayson:
"This club is steeped in history and tradition.
"You go back to the 1950s with Stanley Matthews and people like that and maybe we've lived in the past too long.
"Now we want to be part of a new era where the club goes forward, and hopefully by next weekend we'll be back in the Championship where we belong."
Oldham boss John Sheridan
"I don't think the scoreline was a fair reflection, but we gave our all and it wasn't good enough.
"No disrespect to the squad, but I've got to bring in some better quality players if I can get them.
"We've let in too many sloppy goals over the last 12, 13 games and even over the play-off games."
Blackpool: Rachubka, Barker, Jackson, Evatt, Williams, Forbes (Gillett 90), Southern (Fox 62), Jorgensen, Hoolahan (Burgess 90), Parker, Morrell.
Subs Not Used: Coid, Vernon.
Booked: Southern, Parker.
Goals: Southern 28, Morrell 75, Parker 90.
Oldham: Blayney, Lomax, Haining, Gregan, Edwards, Liddell (Wolfenden 76), Wellens, Rocastle (McDonald 71), Taylor, Porter, Warne (Glombard 71).
Subs Not Used: Roque, Eardley.
Goals: Wolfenden 83.
Referee: L Probert (Gloucestershire).