The Foreign Ministry reported on Tuesday that 142 Thais had been evacuated from Ukraine, with 103 already safe in Warsaw, Poland, and 39 in Bucharest, Romania.
Others were on their way to the assistance centre set up at Lviv in western Ukraine.
The ministry said 38 evacuees would depart from Bucharest on Tuesday and arrive home on Thai Airways International flight TG923, due at 6.25am on Wednesday.
The second group, 58 Thais, would fly from Warsaw on Tuesday and arrive on Emirates flight EK384, due at 12.05pm on Wednesday.
Other Thais stranded in Ukraine cities remained safe, and 35 had already left cities including Kyiv for Lviv. They were expected to reach there on Tuesday.
Most Thais leaving Ukraine were using trains because travelling by car was risky and very slow because of congestion, the Foreign Ministry said.