Quick Answer
Yes, kids can fly internationally alone - but only on certain airlines with stricter rules. Delta, American, and United allow international UM travel. Southwest, Spirit, JetBlue, Frontier, and Allegiant do NOT allow international unaccompanied minors.
Which Airlines Allow International UM Flights?
| Airline | International UM? | Notes |
|---|---|---|
| Delta Air Lines | ✅ Yes | Partners with Air France, KLM, Aeromexico |
| American Airlines | ✅ Yes | Partners with British Airways, Iberia |
| United Airlines | ✅ Yes | Nonstop international only |
| Alaska Airlines | ⚠️ Limited | Mexico & Canada only, restrictions apply |
| Southwest | ❌ No | Domestic US only |
| JetBlue | ❌ No | No flights to London/Europe for UMs |
| Spirit | ❌ No | Domestic nonstop only |
| Frontier | ❌ N/A | No UM service at all |
| Allegiant | ❌ N/A | No UM service at all |
International UM Requirements
International UM travel has additional requirements beyond domestic flights:
📄 Required Documents
- Valid passport - Must not expire within 6 months of travel
- Visa (if required by destination country)
- Notarized consent letter - From non-traveling parent(s)
- Birth certificate - Proving relationship to signing parent
- UM form - Completed airline unaccompanied minor paperwork
⚠️ Important: Consent Letters
Many countries require a notarized letter of consent from the non-traveling parent. Without this, your child may be denied entry at immigration. Some airlines also require this at check-in.
Delta International UM Service
Delta offers the most comprehensive international UM program:
- Ages: 5-17 (mandatory 5-14, optional 15-17)
- Fee: $150 each way (same as domestic)
- Partners: Air France, KLM, Aeromexico
- Connections: Allowed at approved international hubs
American Airlines International UM Service
- Ages: 5-17 (mandatory 5-14, optional 15-17)
- Fee: $150 each way
- Partners: British Airways, Iberia, Japan Airlines
- Note: Stricter connection rules for international
United Airlines International UM Service
- Ages: 5-17 (mandatory 5-14, optional 15-17)
- Fee: $150 each way
- Restriction: Nonstop international flights ONLY
- No connections for international UM travel
Popular International UM Routes
US to Europe
- JFK → London (American, Delta)
- ATL → Paris (Delta/Air France)
- ORD → Frankfurt (United, American)
US to Mexico
- DFW → Mexico City (American, Delta)
- LAX → Cancun (Delta, American, United)
- PHX → Guadalajara (American)
US to Canada
- SEA → Vancouver (Alaska, Delta)
- DTW → Toronto (Delta, United)
- ORD → Montreal (United, American)
Tips for International UM Travel
📋 Start Early
Get passports and visas well in advance. Passport processing can take 6-8 weeks.
📝 Notarized Consent
Get the consent letter notarized at a bank, UPS store, or notary public. Carry multiple copies.
✈️ Book Direct When Possible
Nonstop international flights reduce connection stress and lost luggage risks.
📱 Communication
Set up an international phone plan or get a local SIM card for your child's phone.
Search UM Flights
Find validated flights for your child - domestic and international routes:
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