Arsenal scored twice in three second-half minutes at the Emirates to break the resistance of stubborn Ipswich and claim their place in the Carling Cup final.
A precise right-footed finish from Nicklas Bendtner and a header from Laurent Koscielny put the Gunners ahead in the tie after Ipswich had won the first leg 1-0 at Portman Road.
Cesc Fabregas then sealed victory for Arsenal, who will now play either Birmingham or West Ham in the final at Wembley on 27 February as they attempt to win their first silverware since the 2005 FA Cup.
Huge credit must go to Championship strugglers Ipswich, who were well organised and kept their Premier League opponents at bay for 151 minutes in the tie, including more than an hour at the Emirates.
Gunners duo heap praise on Ipswich
Robin van Persie hit the woodwork in the opening half and Arsenal became increasingly frustrated by their failure to score - with one extremely ambitious long-range attempt from Gael Clichy epitomising his team's desperation.
But the mood changed completely after Arsenal's quick-fire double and Ipswich, supported by 9,000 away supporters, could not force their way back into the tie.
Ipswich were relatively comfortable for the opening 15 minutes, although Van Persie might have done better after making a clean connection from a Bacary Sagna cross.
Fabregas finally broke through in the second half
The home team eventually started to unpick the Town defence and Fabregas forced a saved from visiting goalkeeper Marton Fulop after collecting a pass from Bendtner, who played on the right side of the front line.
Van Persie scored a hat-trick against Wigan on Saturday and should have found the net again after Bendtner found him at the far post but the Dutchman's header rebounded to safety off the crossbar.
Jack Wilshere then played in Fabregas with a sublime chipped pass, which the Spaniard deftly controlled before shooting beyond Fulop but wide of the away team's goal.
Jewell hails 'world-class' Arsenal
Arsenal were starting to work up a head of steam and Tractor Boys boss Paul Jewell cut an increasingly frustrated figure on the touchline.
As had been the case in the first leg, Ipswich lined up with five across midfield, featuring Mark Kennedy in a deep role protecting the back four. They struggled to hold on to the ball and seemed to be surrendering territory as the match progressed but they maintained their shape and discipline.
And for all the Gunners' passing and probing around the opposition penalty area, the north Londoners ended the opening half with nothing to show for their efforts, while there was an increasing sense of anxiety inside the stadium.
90:00+2:03 The final whistle is blown by the referee.
90:00+0:30 Connor Wickham takes a shot. Blocked by Laurent Koscielny.
88:41 Foul by David Norris on Wojciech Szczesny, free kick awarded. Free kick taken by Wojciech Szczesny.
87:49 Outswinging corner taken by Grant Leadbitter, Nicklas Bendtner makes a clearance.
85:11 Connor Wickham gives away a free kick for an unfair challenge on Gael Clichy. Wojciech Szczesny takes the direct free kick.
83:35 The assistant referee signals for offside against David Norris. Wojciech Szczesny restarts play with the free kick.
83:35 Substitution Theo Walcott on for Andrey Arshavin.
83:35 Substitution Robin van Persie leaves the field to be replaced by Samir Nasri.
81:26 David Norris has a headed effort from close range and clears the crossbar.
80:36 Connor Wickham concedes a free kick for a foul on Neves Denilson. Free kick taken by Francesc Fabregas.
76:42 The assist for the goal came from Andrey Arshavin.
76:42 GOAL - Francesc Fabregas:Arsenal 3 - 0 Ipswich Francesc Fabregas finds the back of the net with a goal from close in low into the middle of the goal. Arsenal 3 (3)-(1) 0
75:45 Shot by Francesc Fabregas from deep inside the penalty area misses wide to the left of the target.
73:42 Substitution (Ipswich) makes a substitution, with Shane O'Connor coming on for Colin Healy.
73:29 Headed effort from inside the area by Robin van Persie misses to the left of the target.
68:40 Shot by Jason Scotland from 18 yards. Wojciech Szczesny makes a comfortable save.
66:35 Shot from 20 yards by Grant Leadbitter. Blocked by Laurent Koscielny.
65:24 Inswinging corner taken right-footed by Grant Leadbitter played to the near post, clearance made by Robin van Persie.
64:39 Neves Denilson has an effort at goal from just outside the penalty box which goes wide of the left-hand post.
63:10 Inswinging corner taken by Andrey Arshavin from the left by-line, the assist for the goal came from Andrey Arshavin.
63:10 GOAL - Laurent Koscielny:Arsenal 2 - 0 Ipswich Laurent Koscielny finds the net with a headed goal from inside the six-yard box. Arsenal 2 (2)-(1) 0 Ipswich.
62:06 Colin Healy concedes a free kick for a foul on Francesc Fabregas. Gael Clichy restarts play with the free kick.
62:06 Substitution Jason Scotland comes on in place of Tamas Priskin.
61:10 Unfair challenge on Darren O'Dea by Francesc Fabregas results in a free kick. Damien Delaney restarts play with the free kick.
60:07 Assist by Jack Wilshere.
60:07 GOAL - Nicklas Bendtner:Arsenal 1 - 0 Ipswich Nicklas Bendtner gets on the score sheet with a goal from the edge of the area to the bottom right corner of the goal. Arsenal
1 (1)-(1) 0 Ipswich.
58:18 Foul by Connor Wickham on Emmanuel Eboue, free kick awarded. Free kick taken by Andrey Arshavin.
57:54 Corner taken by Andrey Arshavin, clearance by Mark Kennedy.
57:07 The assistant referee signals for offside against David Norris. Free kick taken by Gael Clichy.
56:36 Corner taken left-footed by Robin van Persie, Marton Fulop makes a save.
55:54 The referee penalises David Norris for handball. Free kick taken by Laurent Koscielny.
55:08 Short corner taken by Francesc Fabregas.
54:32 Short corner taken by Robin van Persie.
53:01 Unfair challenge on Grant Leadbitter by Neves Denilson results in a free kick. Direct free kick taken by Carlos Edwards.
51:47 Corner taken right-footed by Francesc Fabregas from the left by-line, clearance made by Colin Healy.
50:33 Andrey Arshavin concedes a free kick for a foul on David Norris. Free kick taken by Carlos Edwards.
47:30 Unfair challenge on Nicklas Bendtner by Connor Wickham results in a free kick. Direct free kick taken by Johan Djourou.
45:41 Corner taken right-footed by Grant Leadbitter from the left by-line to the near post, clearance by Gael Clichy.
45:21 Free kick awarded for an unfair challenge on David Norris by Jack Wilshere. Carlos Edwards restarts play with the free kick.
45:01 The referee gets the second half underway.
45:00+4:40 The players leave the pitch at half time.
45:00+4:10 Unfair challenge on Francesc Fabregas by Mark Kennedy results in a free kick. Direct free kick taken by Francesc Fabregas.
43:47 Nicklas Bendtner takes a shot. Gareth McAuley gets a block in.
43:05 Tamas Priskin concedes a free kick for a foul on Laurent Koscielny. Laurent Koscielny takes the direct free kick.
41:34 Inswinging corner taken by Andrey Arshavin, save made by Marton Fulop.
39:08 Nicklas Bendtner sends in a cross.
37:24 Free kick awarded for an unfair challenge on David Norris by Gael Clichy. Marton Fulop takes the free kick.
34:51 Shot by Francesc Fabregas. Save made by Marton Fulop.
33:59 Francesc Fabregas has an effort at goal from close range which goes wide right of the goal.
33:33 Short corner taken by Francesc Fabregas.
33:04 The offside flag is raised against Tamas Priskin. Wojciech Szczesny takes the free kick.
32:29 Foul by Laurent Koscielny on David Norris, free kick awarded. Direct free kick taken by Grant Leadbitter.
32:29 Booking Laurent Koscielny goes into the book.
31:33 Andrey Arshavin gives away a free kick for an unfair challenge on Tamas Priskin. Marton Fulop takes the free kick.
31:04 Corner taken right-footed by Andrey Arshavin from the left by-line, Darren O'Dea manages to make a clearance.
29:43 Robin van Persie is caught offside. Marton Fulop restarts play with the free kick.
28:40 Centre by Andrey Arshavin, Marton Fulop makes a save.
28:27 Jack Wilshere takes a shot. Gareth McAuley gets a block in.
27:41 Robin van Persie fouled by Damien Delaney, the ref awards a free kick. The free kick is delivered right-footed by Francesc
Fabregas from left channel, save by Marton Fulop.
24:33 Unfair challenge on Johan Djourou by Connor Wickham results in a free kick. Wojciech Szczesny takes the free kick.
24:33 Booking Connor Wickham goes into the referee's book.
Correction - 22:48 Nicklas Bendtner delivers the ball, Robin van Persie takes a shot.
22:48 Nicklas Bendtner crosses the ball, Header from close range by Robin van Persie strikes the post.
21:25 Corner taken by Andrey Arshavin.
20:33 Colin Healy concedes a free kick for a foul on Jack Wilshere. Laurent Koscielny restarts play with the free kick.
18:53 Neves Denilson gives away a free kick for an unfair challenge on Tamas Priskin. Free kick taken by Carlos Edwards.
18:08 Francesc Fabregas takes a shot. Marton Fulop makes a save.
17:02 Substitution Emmanuel Eboue on for Bacary Sagna.
Correction - 11:35 Gael Clichy gives away a free kick for an unfair challenge on David Norris. Grant Leadbitter sends in a cross, Gareth McAuley
has a header from deep inside the six-yard box and clears the crossbar.
11:35 Gael Clichy challenges David Norris unfairly and gives away a free kick. The ball is crossed by Grant Leadbitter, Close range
header by Damien Delaney goes over the bar.
8:36 Laurent Koscielny concedes a free kick for a foul on Tamas Priskin. Carlos Edwards takes the direct free kick.
7:48 Gael Clichy fouled by Tamas Priskin, the ref awards a free kick. Direct free kick taken by Gael Clichy.
5:11 Outswinging corner taken right-footed by Grant Leadbitter from the right by-line to the near post, Robin van Persie manages
to make a clearance.
4:09 Robin van Persie has an effort at goal from just inside the box that misses to the right of the goal.
2:45 Jack Wilshere fouled by Mark Kennedy, the ref awards a free kick. Robin van Persie delivers the ball from the free kick left-footed
from right channel.
0:03 Shot on goal by Grant Leadbitter from long range goes harmlessly over the target.
0:00 The referee gets the game started.
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