Through March 31, SkyMiles members can earn double miles on flights between Cincinnati and five European destinations: London, Paris, Rome, Amsterdam and Frankfurt.

The offer applies to non-stop Delta flights originating in or connecting through Cincinnati to these five European cities.

To earn the double miles, SkyMiles members must enroll online prior to travel at http://www.delta.com/europedoublemiles . Codeshare flights not operated by Delta are excluded from the offer.