Below you will find listed who the Vikings will play in 2014. The exact dates & times for each year's games are determined when the NFL schedule is released, which generally happens in mid to late April each year.
2014Home: Chicago, Detroit, Green Bay, Atlanta, Carolina, New England, New York Jets, and NFC East Team TBD
Here is the breakdown of how the schedule is determined on an annual basis:
6 games against your division (3 on the road, 3 at home)
4 games against a division in the NFC (2 on the road, 2 at home)
4 games against a division in the AFC (2 on the road, 2 at home)
2 games against teams that finished in the same spot in their division as the Vikings did the previous year in the NFC outside of the division they play four games against already (1 on the road, 1 at home)
That last point can be a bit hard to explain, but for example, if the Vikings win their division and play 4 games against the NFC West the following year, then those two extra games would be against the teams who won the NFC East and NFC South.