At one point, three lanes on the westbound carriageway between junction 30 at Rothwell and junction 29 at Lofthouse were closed.
A spokesperson for West Yorkshire Police said they were called to assist the ambulance service at 7.54am.
Three white vans were involved in the collision; a Fiat Ducato, a Mercedes Curtain and a Vauxhall Movano.
None of the drivers are believed to have been seriously hurt.
Highways England said the accident was cleared by around 9.15am and delays were easing.