I'm trying to setup a non-real scenario that doesn't break suspension of disbelief too much past the original idea. But so long as things keep consistency it should be fine.
So you are flying a fighter plane of sorts (could be current tech, you could opt to choose future tech or old tech for your answer if you believe it's not possible otherwise/believe it is). And suddenly you see/are informed of a ground to air rocket launch from an enemy, towards you of course.
Now instead of a single or a couple rockets headed towards you, you get "enough missiles to blot the sun" heading towards you non stop (or at least an extended period of time), and I want you to fly through.
In case the description is too open still, then let's go with 30 streams of rockets firing twice a second (60 rockets a second then) and firing non stop for a whole minute, the rockets don't spread much and seem to keep formation, and as such will fly in a long growing blob like a snake/bee swarm of sorts.
Try to remain IRL tech, but you can use your fantasy if you have a cool idea. For example the idea of a mass of missiles being launched for a single plane is a bit fantastic already. They would probably spread wide to cover as much volume as possible anyway.
I first assume you'd want to fly in a pattern that eases dodging them, you want to fly through, but it may/not be smarter to dodge to the side a bit, so long as you don't do a u-turn and tail it it's ok. Missiles, at least current tech, should have great capabilities hitting you. So they could be made lower tech (to make up for their extreme quantity) in order for you to have a slightly better chance. You could also have a futuristic jet that can actually dodge current missiles if there is no other way around it.
Second idea would be shooting them down, with current tech you got bullets and rockets, with old tech just bullets, future tech you can have anything. Regardless, if you could get one of them to explode, would there be a chain reaction all the way to the launchers? I would assume yes, but I'm not an expert on that, do warheads arm right on launch? or before impact? would an unarmed warhead explode anyway from an explosion next to it? Would the propellant ignite regardless of the warheads and cause big enough explosions for a chain reaction?
In case a chain reaction is unlikely, would the initial explosion disable all missiles on its radius so that you could survive as long as you could keep the explosions going?
Third idea would be turning "invisible" somehow, current missiles search in several spectrums so I assume that's not possible, but older tech? Perhaps they are cheaper rockets or leftovers from past wars. Also since its a mass of missiles I have to assume they don't use their own recon system because they'll be obscured by the missiles in front (or the ones to the side when turning), and instead receive vectors from the missiles at the front or a ground station. Perhaps a way to kill comms briefly would work.