blue #
= weekly pop chart peak
| 1 | If I Let You Go | Aug 1999 |  |
| 2 | Flying Without Wings | Oct 1999 | |
| 3 | I Have A Dream | Dec 1999 | |
| 4 | Seasons In The Sun | Dec 1999 | |
| 5 | Swear It Again | 1 | Jun 2000 | |
| 6 | Against All Odds | Sep 2000 | |
| Westlife Featuring Mariah Carey |
| 7 | My Love | Nov 2000 | |
| 8 | What Makes A Man | Dec 2000 | |
| 9 | Uptown Girl | Mar 2001 | |
| 10 | Queen Of My Heart | Nov 2001 | |
| 11 | World Of Our Own | Mar 2002 | |
| 12 | Bop Bop Baby | Jun 2002 | |
| 13 | Unbreakable | Nov 2002 | |
| 14 | Tonight | Mar 2003 | |
| 15 | Miss You Nights | Apr 2003 | |
| 16 | Hey Whatever | Sep 2003 | |
| 17 | Mandy | Nov 2003 | |
| 18 | Obvious | Feb 2004 | |
| 19 | Fly Me To The Moon | 2004 | |
| 20 | You Raise Me Up | Oct 2005 | |
| 21 | When You Tell Me That You Love Me | Dec 2005 | |
| Westlife With Diana Ross |
| 22 | Amazing | Mar 2006 | |
| 23 | The Rose | Nov 2006 | |
| 24 | Home | Nov 2007 | |
| 25 | I'm Already There | Dec 2007 | |
| 26 | Total Eclipse Of The Heart | 2007 | |
| 27 | Us Against The World | Mar 2008 | |
| 28 | What About Now | Oct 2009 | |
| 29 | Safe | Nov 2010 | |
| 30 | Lighthouse | Nov 2011 | |