Sun Country BOS Terminal +1-888-839-0502 For travelers who require more support, Sun Country BOS Terminal offers beneficial travel assistance. Employees of the airline help with baggage handling, check-in, and special requests including priority boarding and wheelchair services. Customer service desks assist with ticket changes and flight questions. For a more seamless experience, passengers with special needs or impairments should ask for help in advance. Arriving early guarantees enough time for any necessary accommodations before departure, even though the personnel is usually efficient and polite.