State Department officials said yesterday that the Soviet Government may have collaborated with Czechoslavakia in the arrest of Vladimir J. Kazen-Komarek, president of the Harvard Travel Service.

Kazen-Komarek was a passenger on the Soviet governmental airline, Aeroflot, when his plane made an unscheduled stop in Prague. He was taken from the plane and arrested for "treasonous activities" against the Czech government in the forties and early fifties.

In response to U.S. inquiries, the Soviet government has said that the landing was an emergency.

The Czech government became aware of Kazen-Komarek's whereabouts and occupation when he applied for a visa in June. He had planned to fly to Czechoslavakia to visit his mother, who was ill, but later decided against it.

In September, he received an invitation to attend a travel service conference in Moscow. The invitation, which was sent to travel agents throughout the United States, included the offer of reduced rates on Aeroflot. Kazen-Komarek's father-in-law, Donald Hunt, said that Kazen-Komarek had made many trips to Moscow in past years but that this was probably the first time he had flown on the Soviet Airline.

Kazen-Komarek had planned to fly home on a Pakistani airline, but weather conditions forced him to take a later plane, which was scheduled to fly non-stop to Paris.