The phrase "domestic airlines" refers to airlines that operate within one country, providing flights for people traveling within that country. Full definition
Most major domestic airlines and several cruise lines have said they are relaxing change policies for pregnant travelers with existing reservations to an affected region. (cnbc.com)
Another consideration is that there is a small transfer fee for domestic airlines. (rewardexpert.com)
Bottom Line: Transfer ratios are not stellar, and there is a lack of domestic airline partners. (upgradedpoints.com)