| Airline | Age | Fee per child (each way) | Notes |
| AirTran Airways | Five to 11 years old – nonstop or direct flights only | $49 | Unaccompanied children cannot fly on the last flight of the day. |
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| American Airlines | Five to 11 years old – nonstop or direct flights only | $100 (only one fee applies for two+ siblings flying same itinerary) | Flights for unaccompanied minors cannot be booked online. |
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| British Airways | Five years old – single sector, direct, nonstop flights only Six to 14 years old – can travel alone on on British Airways flight | $50 for flights within UK $75 for long-haul | Flights for unaccompanied minors cannot be booked online, and your child must be registered with the Skyflyer Solo service 48 hours before departure. |
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| Delta Air Lines | Five to seven years old – nonstop or direct flights only Eight to 14 years old – nonstop and connecting flights | $100 | Unaccompanied minors are not permitted on Red Eye flights (between 9 pm and 5 am), with the exception of flights departing from Alaska or Hawaii and connections to / from international flights. |
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| Frontier Airlines | Five to 14 years old – nonstop or direct flights only | $50 per non-stop or direct flights | Unaccompanied minors pay a full adult fare. |
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| JetBlue Airways | Five to 14 years old – nonstop or direct flights only | $100 (must be paid when booking) | Five to 16 years old – notarized parental letter of consent for flights between the U.S. and the Bahamas required |
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| Southwest Airlines | Five to 11 years old – nonstop or direct flights only | $50 | The child must wear an "Unaccompanied Minor" lanyard through the airport and for the duration of the flight. |
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| Spirit Airlines | Five to 14 years old – nonstop or direct domestic flights only 15 years old – not considered a minor, but may pay a fee for the service | $100 | |
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| United Airlines | Five to 7 years old – nonstop flights only Eight to 11 years old – all United flights permitted, but not the last connecting flight of the day | $99 (only one fee applies for up to three siblings flying same itinerary) | |
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| US Airways | Five to 14 years old – nonstop only 15 to 17 years old – nonstop flights only when assistance is required, otherwise connecting flights are permitted if no assistance is needed | $100 | Five to 14 years old – first and second checked bag fees waived when “unaccompanied minors” service is purchased |
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