** Airlines top Britain's FTSE 100, with easyJet fuelled by a robust trading update & IAG risingafter Aer Lingus accepts its revised offer
** easyJet up 3.7 pct at 10-mth highs; says H1 seasonallosses will shrink this yr after it added seats on successfulroutes & attracted more business passengers
** Analysts at Jefferies say co's H1 earnings guidance isbetter than expected
** IAG trades just shy of all-time highs, up 2.3 pct, afterboard of Aer Lingus recommends an improved 2.55 euros per sharetakeover offer from co - its third proposal in six weeks - upfrom 2.40 euros
** Aer Lingus says recommendation subject to being satisfiedwith how IAG proposes to address the interests of relevantparties including its top shareholders, budget airline Ryanair & Irish govt
** Aer Lingus shares up 1.2 pct (RM: tricia.wright1.thomsonreuters.com@reuters.net)