Yes, the other post have great advice, and Brainstorm123 is right about trying different speeds of film. The weather factors ARE always coming into play when taking jet photos.
My advice, and I've been taking photos since the late 1960's, from Kodak InstaMatics to Minolta X-700 35mm, is to use the same film you like the best all the time. You make the call if you like slides or prints. I have about 90% prints and the rest are slides. I haven't counted my photos, but it's probably in the 15,000 plus range. The reason I always used the same film, is I use an older style 35mm where I have to set the ISO speed manually. If a 747SP shows up at SJC(which it won't,,but bear with me here) and I'm on 34 of a roll of 36....and I have to change film in less than 20 seconds and my next film is 400ISO, than V-E-R-Y valuable time is lost resetting the camera as a RARE jet is on final, and you'll be mad at yourself. If you don't match the film speed to your camera setting, then your photos won't be what you wanted,,,believe me, I had that happen to me at LAX one day.
What type of camera are you using? Manual or AF(Autofocus)
I have used 100ISO speed film now for the last 15 years and have buddies around SJC that use 200ISO and have great results.
Lens: Your lens is very important also. Get a good quality glass lens. I use a 60-300mm zoom and a 28-105mm for up close.
Settings: I use a 'program' setting on my camera in daylight. The X-700 has P for program, and the lens has a matching P in the ring. Match those 2 up, and I haven't had very many bad photos. The built in light meter does the rest, and I get excellent color. Sometimes based on lighting, whether it be AM shot or PM late afternoon shot, you will see some variances on the subject matter, but that's up to you to decide what you want in the photo. Some of the newer auto-focus cameras(AF) will help you greatly,,,the film speed is automatically set and the light meter built in will handle the setting,,,you just point and shoot. Using manual settings is more difficult, as the subject is normally moving, so you won't get the best shot. Try looking at some of the variances of the photos on this forum, and try to see if you can find photos of early AM or PM shots, and send the photographer an-e-mail and ask them how they took that photo...you may get some good response.
With the new technology nowadays, Slides may be a nice option, because the new scanners with slide and negative attachments make any format of film just fine. For personel collections and photo albums, nothing beats a book full of your best shots at the airport when you meet up with other JetFreaks at the fence.
Hope this helps.