Where do you want to fly to Fairbanks from?
Google Alaska Airlines for their web site and timetables. It will tell you all you want to know.
We are flying to sealett staying over night to then on to fainbanks.
If you are booking the flight yourself or through an agent take care.
Direct flights take just under 4 hours. Most are connection flights that can vary between 6 and 11 hours.
There is a direct flight about 6pm most evenings if that helps.
Use a good travel agent and make them check the total flight time with you
Have a good time.