Hi there, InspectorH. Instead of rebuilding your team for you, I'm going to give some pointers and tips that I think might help out. (also I'm assuming this is fourth or fifth gen Pokemon - if it's like GBA stuff you probably shouldn't listen to this advice since a lot of mechanics changed from third to fourth gen). edit: owait you have draco meteor and feint nvm this is gen 4+ for sure
First of all, when you're building the sets of your Pokemon, you'll want to take into account their strengths. I mean, taking a look at Dragonite's stats, I think you'd agree with me that his normal Attack stat is better than his Special Attack stat, isn't it? Why are you using all of those specially-based moves if it's working off of his lesser attack stat? Dragonite could run a mixed set (meaning, both physically- and specially-based attacks), sure, but then it should be more physically-inclined because that's its better stat. By using the best stats it has, you start to maximize a Pokemon's potential and make them a lot more useful.
Flygon's got a lot of issues. Firstly, yeah, his stats are definitely lower than they should be. This could be because of poor IVs or just some unlucky EV training or something. Next, the same rules apply as to what I said about Dragonite - maximize its potential by using its strongest stats! Earth Power and Hyper Beam are both Special moves, meaning they work off of his SpA (Special Attack abbreviation). You should try to use Physical attacks to use its better attacking stat. Now, on the note of Hyper Beam, it's a move you want to avoid using. Sure, it looks super powerful, but it's really not as good as you think, because once you use it, the opponent has a free turn to do whatever they want. There's no attack powerful enough to make up for giving the opponent free turns.
Next on Flygon's issue list is Fissure. In general, OHKO moves are banned from competitive play in almost all circumstances. No one likes to be coasting to a win to all of a sudden be OHKOd because someone randomly had an OHKO move. It's considered a cheap move in general and no one wants to be on the receiving end, so it's mutually agreed upon that no one uses OHKO moves. (Plus 30 accuracy sucks ;;). Lastly, Feint is a really bad move. Why? It requires the opponent to use Protect/Detect so that it can hit, and it only has 50 base power even when it does work. There are a lot of much much much better moves to use there instead of Feint.
Blissey's best job is to be a Special wall - to suck up any specially-based attacks with her huge bulk. She's not something that wants to set up with Calm Mind because she's a team supporter first and foremost. There are all kinds of moves you can run on Blissey, and Softboiled (or Wish + Protect) is the only necessary one I think. You can run Toxic, Stealth Rock, Flamethrower (to hit things like Scizor on the switch in), Seismic Toss (to deal reliable damage since Blissey's attacking stats aren't too hot), etc. Also, speaking of attacking stats, have you seen Blissey's Attack? It's got a 22 Attack stat. The -last- thing it should be doing is using Double-Edge.
Absol looks like it has a fair set, actually.
When you do post your team to be rated, it'd be great if you can post your Natures, EVs (if you can), and the items that they have too. I can't recommend any of those things since a) I'm lazy and b) I don't really want to build your team for you but if you come up with your own I'll do my best to rate it and help you make it better. Good luck with your team.