Generally, yes. This may vary on your own country’s laws, but there isn’t anything that necessarily prevents your electro-stim toys from traveling with you. Some things to consider:
Electro sex toys can be somewhat fragile. They can withstand a lot, but they may not withstand being roughly shoved around with no protection. Make sure you keep your electro-stim toys in their original, padded packaging, and if possible, add shock-absorbing layers around the packaging as well.
Depending on your e-stim sex toy, it may be made with Lithium-ion batteries. If so, follow protocols for flying safely with them.
Your electro sex compatible lube may not be flight-safe. Make sure to have aeroplane-approved containers. You can find water-based lubricant in airport-friendly containers, but you may not find conductive lubricant in that same size. You might need to temporarily switch to a non-conductive water-based lubricant until you’re back home.