I saw this film in the Boyd Theater in Allentown, PA in, I think 1958. It was on a double bill with "The Fly" (Vincent Price/Al Hedison(later David Hedison from TV's "Voyage To The Bottom Of The Sea")). The film was about a creature or something that was similar to "The Blob". It was found on an airliner in one scene that I can recall but that's about all I can recall now. I think it was around Halloween that I saw the two films. I was about 6 years old at that time and "The Fly" really scared me to death! But I've always wanted to get this other film. Can anyone help me? Thanks for your help. G.R. Smith

Possibly Space Master X-7? I found an image of an advertisement for The Fly, showing Space Master X-7 on it as well, also, I found info saying Space Master was double billed with The Fly...

https://lh5.googleusercontent.com/-EMucqVFDr7w/Td6wY8f_i9I/AAAAAAAAAYY/sp-5tLNe1ow/The_Fly_Aug1958.jpg

...The film was originally double billed (http://en.wikipedia.org/wiki/Double_bill) with The Fly (http://en.wikipedia.org/wiki/The_Fly_(1958_film)).....

Here's the whole movie - in a foreign language of course - it does look like towards the end (around 50min-ish) there is something going on inside an airplane - at the end the people are escorted off and put into busses - quarantined perhaps?)
Space Master X-7 1958 Rus Трамвай-фильм - YouTube (http://www.youtube.com/watch?v=Z7BTZMlygTM)

**I cannot edit any of my posts to add new info - sorry about the numerous posts!**
Tried to add this to my first post:
Space Master X-7 - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Space_Master_X-7)

Possibly Space Master X-7? I found an image of an advertisement for The Fly, showing Space Master X-7 on it as well, also, I found info saying Space Master was double billed with The Fly...

https://lh5.googleusercontent.com/-EMucqVFDr7w/Td6wY8f_i9I/AAAAAAAAAYY/sp-5tLNe1ow/The_Fly_Aug1958.jpg

...The film was originally double billed (http://en.wikipedia.org/wiki/Double_bill) with The Fly (http://en.wikipedia.org/wiki/The_Fly_(1958_film)).....

Dear Aliseaodo: Thank you so much for responding. I used your link to YouTube and found an English language version. I do believe that this is the film. It's been more than 50 years so my memory of it is very vague but it seems to fit. It was pretty much standard 50s Sci-Fi stuff. Thanks again! GRS/SLIPKID75