The last time Manchester United played in a UEFA Champions League final was in the 2007/08 season. They faced Chelsea in the final, which took place on May 21, 2008, at the Luzhniki Stadium in Moscow, Russia. After a dramatic match that ended in a 1-1 draw, Manchester United triumphed 6-5 on penalties, securing their third Champions League title.

For more details on Manchester United's Champions League history, you can visit the following links:

1. UEFA's official page on Manchester United's Champions League history: UEFA Champions League History
2. Detailed information about the 1999 UEFA Champions League final: 1999 UEFA Champions League Final - Wikipedia
3. Detailed information about the 2008 UEFA Champions League final: 2008 UEFA Champions League Final - Wikipedia
4. Summary of the 1999 final match against Bayern Munich: Man Utd vs. Bayern München 1998/99 Final
5. History of Manchester United's achievements, including the Champions League: Manchester United Trophy Room
6. Overview of Manchester United's cup history: Cup history - Transfermarkt

This information highlights the club's significant achievements in the UEFA Champions League, particularly their recent final appearances.

Sources

Man Utd | History | UEFA Champions League1999 UEFA Champions League final - Wikipedia2008 UEFA Champions League final - WikipediaMan Utd 2-1 Bayern München | UEFA Champions League 1998/99 ...Champions League and European Cup | Man Utd Trophy RoomThe last time Manchester United won the Champions League - MetroManchester United - Cup history - Transfermarkt

Related Questions

When was the last time Manchester United got to the Champions League final?

Who played for Manchester United in the 1999 Champions League final?

What happened in the 2009 UCL final?

Has there ever been an UCL final at Old Trafford?