@uma1 I hope you can find a way to return to the top cancer hospital. Here are a few suggestions for assistance in traveling for cancer treatment.
Google: Many organizations offer travel assistance for cancer care, ranging from ground transportation to free flights and lodging. The type of assistance often depends on eligibility criteria such as financial need, distance to treatment, and specific diagnosis.

General & Ground Transportation
American Cancer Society (ACS): Road To Recovery® This program provides free rides to and from cancer treatment appointments using volunteer drivers. Availability varies by community, and patients can call 1-800-227-2345 for more information. The ACS also provides lodging through their Hope Lodge® program, which offers free temporary housing for patients and caregivers traveling far from home for treatment.
CancerCare Offers limited financial assistance for transportation, home care, and child care for eligible patients. Patients can call 1-800-813-HOPE (4673) to check eligibility and apply.
Mercy Medical Angels Provides free transportation for medical care for low-income patients, including gas cards, and bus or train tickets for long-distance travel. Veterans may also be eligible for special assistance.
Society of St. Vincent de Paul Offers various types of local assistance, including emergency transportation, based on need. Contact your nearest Catholic Church to find a local conference.

Air Transportation
Air Care Alliance A national network of volunteer pilot groups providing free air transportation for patients needing to reach distant medical care facilities.
Air Charity Network Facilitates free air transportation for patients who must travel to specialized healthcare facilities located far from home.
Corporate Angel Network Arranges free flights for cancer patients using vacant seats on corporate jets flying routine business.
Lazarex Cancer Foundation Assists with travel and lodging expenses for eligible patients participating in clinical trials.
Miracle Flights Provides free commercial flights to children and adults in need of specialized medical care far from home.

Lodging Assistance
Joe's House An online database of hotels and lodging facilities across the country that offer a discount for patients and their families traveling for medical treatment.
Fisher House Foundation Provides a network of comfort homes where military and veterans' families can stay for free while a loved one is receiving treatment at a nearby VA health care facility.

Condition-Specific & Other Resources
Alex's Lemonade Stand Foundation Offers financial assistance for travel for childhood cancer treatment at institutions across the U.S. and Canada.
Blood Cancer United Provides grants for ground transportation, airfare, lodging, and other travel expenses for eligible blood cancer patients.
Patient Advocate Foundation (PAF) Offers co-payment assistance and case management services to help patients navigate the healthcare system and find resources.

For the most comprehensive list and specific eligibility details, you can also search the database provided by the Cancer Financial Assistance Coalition.