Northwest – Delta Service Update January 7, 2009

Agenda Delta – Northwest Merger Update Columbia Service Update Delta – Northwest Policy Updates New Delta Service

Delta-Northwest Merger Update Creates world’s premier global airline –75,000 employees –66 countries and 375 cities –Eight hubs and thousands of additional connecting opportunities Atlanta, Cincinnati, Detroit, Memphis, Minneapolis, New York JFK, Salt Lake City, Tokyo –Adding service to Australia USA’s only airline with non-stop service to six continents –Provides ability to leverage strength of combined aircraft fleet NW operates as subsidiary until single license approved NW planes being painted to match Delta livery Frequent flyer programs will merge end of 2009

Columbia Service Update COU was in Top Five of (56) Mesaba airports in 4Q08* Passengers: 99% increase from Jan-Jun timeframe Passenger Boardings Performance On-time performance all flights**83.6% On-time performance controllable flights***96.0% Flight completion factor98.4% * Based on number of passengers, percentage of seats filled and amount of delays and cancellations ** Includes uncontrollable delays, such as weather, Air Traffic Control delays, irregular operations *** Only includes controllable delays such as fueling, passenger service delays, loading, passenger accommodation delays that we can control

Delta – Northwest Policy Updates Change fees for all domestic non-refundable tickets is $150 Domestic checked luggage* (up to 50 lbs) –1 st bag$15 –2 nd bag $25 –3 rd bag$125 –4 th bag$200 Fly Now Standby Fee: $50 for earlier flight (same day) –Only on Northwest; Delta does not yet have standby product Adding Internet service (4 aircraft per week): $9.95/flight NW-DL Standby Elite upgrades now reciprocal * different policy for Elite members and military

New Delta Service Domestic –Memphis – New York JFK (Apr 6) –Kansas City – New York 3 daily to LaGuardia, 1 daily to JFK International –Africa: Atlanta and JFK to six new non-stop destinations in Africa –Europe New York JFK to Prague, Valencia, Zurich Pittsburgh – Paris Detroit – Rome –Asia: Detroit – Shanghai –South America: Los Angeles – Sao Paulo –Australia: Los Angeles – Sydney