An Online Artist's Coop for Artists who Paint on Location
Most paint manufacturers have Material Safety Data Sheets (MSDS) you can print out and keep with your paints when flying. You can only take your paints in checked luggage you can't carry them on the plane with you. Because most carriers charge for checked luggage now I always look and see if its cheaper to send my stuff by Fed Ex or UPS. For OMS or turp I ship to my hotel directly from the supplier. When flying if I have unused solvent left over I will bring it by the local art league if there is one and see if anyone there wants it. They are usually happy to take it.
When driving I keep a large plastic tote with all my supplies in it. I always have an extra container to put the used turp /OMS into.
I second everything Armand has to say. Make sure that you also pack any palette knife in with your check in luggage. If you have a new unopened can of OMS you CAN ship it in your baggage with MSDS documentation, however I usually buy or ship separately.
On my most recent trip I found a waterproof container for boating that was inexpensive at Walmart. It held all my oils and watercolors. I made sure to label the container "Artists Colors" not OIL PAINTS. I had heard from others that this is the safest way to go.
Air Travel with artists' colors made from vegetable oil.
The US Department of Transportation defines "flammable liquids" as those with a flash point 140 degrees F or below. Artist grade oil colors are based on vegetable oil with a flash point at or above 450 degrees F. THEY ARE NOT HAZARDOUS.
If you need to confirm this, please contact TSA at 866-289-9673 or their Hazardous Materials Research Center at 800-467-4922
Packed with the paints is the MSDS data sheet from the paint manufactured with the exact flash point info.