Details of promotion:

Fly just one roundtrip between the United States and the United Kingdom and you'll earn a very big reward.

Register now and then purchase and fly round trip transatlantic flights to/from London (Heathrow or Gatwick), Manchester (MAN), or Edinburgh (EDI) between April 7 and September 30, 2009 and you can earn:
50,000 Bonus Miles for paid BusinessElite/Business Class (fare classes J/C/D/S/I on Delta-coded flights and J/C/I/Z on Northwest-coded flights)
25,000 Bonus Miles for paid Premium Economy Class (fare classes Y/B/M on Delta-coded flights and Northwest-coded flights)
Or, enroll now if you're not already a SkyMiles member. It's fast and free.
For more details about this offer, see Terms & Conditions.
The Hilton Family of Hotels—earn miles while you sleep at participating Hilton Family hotels round the world.
Terms & Conditions
Eligibility:
To participate in this offer, you must be a new or existing SkyMiles member and register online by September 30, 2009.


Bonus Offer:
To participate in this worldwide public offer, you must be a new or existing SkyMiles member and enroll by September 30, 2009 and fly between April 7 and September 30, 2009.

Purchase and fly on Delta or Northwest marketed and operated transatlantic roundtrip flights to/from London (LHR), London (LGW), Edinburgh (EDI) or Manchester (MAN) or Air France marketed/Delta operated roundtrip flights between Atlanta (ATL) or New York (JFK) and London (LHR) between April 7 and September 30, 2009 and earn 50,000 Bonus Miles for paid BusinessElite/Business Class (fare classes J/C/D/S/I on Delta-coded flights and J/C/I/Z on Northwest-coded flights and J/C/D/I/Z on Air France-coded flights) and 25,000 Bonus Miles for paid Premium Economy Class (fare classes Y/B/M on Delta-code flights and Y/B/M on Northwest-coded flights and Y/B/K on Air France-coded flights). Codeshare flights operated by carriers other than the Delta and Northwest are excluded from this offer.
Travel Period:
Travel must be between April 7 and September 30, 2009. All travel must be completed by September 30, 2009.
Award Travel:
Taxes and fees for Award Travel are the responsibility of the passenger and must be paid at the time the ticket is booked. Award Travel seats are limited and may not be available on all flights or in all markets.
Miscellaneous:
Your bonus miles will appear automatically on your SkyMiles statement. Allow up to six weeks after qualifying travel is completed for credit to appear. All SkyMiles program rules apply. To review the rules, visit Membership Guide & Program Rules. Hotel and rental car additions are subject to the terms and conditions of the service provider. Partner offers subject to the terms and conditions of each individual offer and each partner. Offers void where prohibited by law. Other restrictions may apply. Offers and benefits are subject to change without notice. Bonus applies only to the traveling SkyMiles member. This offer cannot be combined with other Delta/SkyTeam offers. Please refer Delta customer service representative to 970643.