* GoldStreak shipments must be booked in advance for the guarantee to apply. All claims must be requested by customer within seven days of the service failure. Guarantee refund requests should be made at the city of origin or the destination city or by contacting us. Guarantee applicable to Alaska Airlines flights and flights operated by regional partners Horizon Air and SkyWest. Guarantee is for transportation charges only with the following restrictions: flight cancellation or delay due to air traffic control difficulties, weather or acts of God. Other restrictions may apply.