A Gylfi Sigurdsson double and Joe Allen's strike claimed a deserved 3-0 win at Fulham as the Swans clinched a third successive league victory.
Thanks to one of the best performances of the season, the Swans were in tantalising form and backed up previous wins over Wigan and Manchester City.
Sigurdsson got the ball rolling in the first half, heading home from short range after Scott Sinclair had returned Wayne Routledge's cross.
The Swans dominated possession and territory, and it was to no surprise when they extended their lead. Again it was Sigurdsson, who fired home after Routledge's cut back in the second half.
Then, to put the icing on the cake, Joe Allen took advantage of a loose pass in the Fulham defence and beat Mark Schwarzer after shooting into the bottom corner.
This was the fourth away win since the turn of the year for the Swans, who moved 17 points clear of the dropzone and five adrift of sixth-placed Newcastle, having played a game more.
The Swans made one enforced change to the starting XI.
Ashley Williams's consecutive run of 169 appearances came to an end after he was ruled out with a virus. That meant Garry Monk went into the heart of defence to skipper the side and link up with Steven Caulker for the first time this season.
Other than that the Swans starting line-up remained the same as the one that clinched a memorable 1-0 win over Manchester City last time out.
Fulham: Mark Schwarzer, Stephen Kelly, John Arne Riise, Brede Hangeland (capt), Pavel Progrebnyak, Andrew Johnson (Kerim Frei, 66), Bryan Ruiz (Damien Duff, 54), Philippe Senderos, Mahamadou Diarra (Danny Murphy, 72), Clint Dempsey, Mousa Dembele.
Subs: David Stockdale, Chris Baird, Aaron Hughes, Dickson Etuhu.
Swans: Michel Vorm, Angel Rangel, Garry Monk (capt), Steven Caulker, Neil Taylor (Alan Tate, 90), Leon Britton, Joe Allen, Gylfi Sigurdsson (Mark Gower, 90), Wayne Routledge, Scott Sinclair, Danny Graham (Luke Moore, 90).
Subs: Gerhard Tremmel, Jazz Richards, Josh McEachran, Leroy Lita.
Both teams showed their attacking intent inside the opening few minutes.
For the visitors, Angel Rangel threaded through a fine pass for Danny Graham inside 30 seconds, but the striker's shot on the turn was straight at Mark Schwarzer.
Then, a minute later, Clint Dempsey raced forward and Michel Vorm had to tip his thunderous 20-yard effort over the crossbar.
Another home attack followed as the Swans failed to clear a cross and Mousa Dembele fired a low effort which Vorm got down to collect.
The action continued, and with four minutes on the clock another chance arrived with Sinclair latching onto a mispass before cutting inside and seeing his shot deflected out for a corner.
The next chance didn't come until the game ticked towards the half-hour mark as Vorm found Neil Taylor on the left, and when the Welsh international found Joe Allen, the midfielder switched play to the right to Angel Rangel who touched inside to Gylfi Sigurdsson. Then, after turning onto his right foot, Sigurdsson fired a low effort just past the far post.
The Swans came again, the Fulham defence again coughing up possession after Graham deflected Schwarzer's clearance to Sinclair, who rounded Brede Hangeland before being denied by the keeper.
After probing for the opener, the Swans got their goal.
After Progrebnyak's mis-pass fell to Sigurdsson, who found Routledge down the right. His cross was knocked back by Sinclair to Sigurdsson, who headed home from six yards after 36 minutes.
Half-time: Fulham 0 Swans 1
Following a hugely pleasing first half, the Swans showed no sign of settling on their lead.
Sinclair lashed a right-footed effort wide before the visitors doubled their lead with 25 minutes to go.
After a neat passing move, Sigurdsson fed Routledge into the box on the right flank and, with the Fulham defence expecting the cross to fizz along goal, the winger squared back to Sigurdsson, who fired in for his and the Swans' second.
Kerim Frei and Danny Murphy came on in place of Andy Johnson and Mahamadou Diarra as Martin Jol looked to change things up for the last 20 minutes.
But it was the Swans, in total control, who got the crucial third goal. Philippe Senderos's mis-directed pass met Sinclair, who put Allen in down the left. He cuts inside and, with Senderos losing his footing, the Wales international fired low into the bottom corner.
Fulham were desperately looking to claw something back, and Dempsey's half volley was tipped onto the crossbar and over for a corner.
Pavel Progrebnyak's blistering effort then rose over the crossbar as the game entered the remaining five minutes.
There was always a fourth goal when, after another superb passage of play, the Swans carved open another chance with Graham and Sinclair pushing on, and when Sinclair latched onto Routledge's return pass the winger directed his effort just over.
But that was the final action as the Swans clinched a hugely deserving victory.