📋 Quick Comparison
- Best value: Alaska Airlines ($50 nonstop, $75 connecting)
- Most flexible connections: American Airlines (10 approved hubs)
- Simplest policy: United & JetBlue (nonstop only, no confusion)
- Budget carriers: Allegiant & Frontier offer NO UM service
The Complete Comparison Table
| Feature | AA | DL | UA | WN | AS | B6 |
|---|---|---|---|---|---|---|
| Fee (per segment) | $150 | $150 | $150 | $100 | $50-75 | $150 |
| Mandatory Ages | 5-14 | 5-14 | 5-14 | 5-11 | 5-12 | 5-14 |
| Optional Ages | 15-17 | 15-17 | 15-17 | — | 13-17 | 15-17 |
| Connections Allowed | Ages 8+ | Ages 8+ | ❌ No | ❌ No | Ages 8+ | ❌ No |
| Online Booking | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ |
| Multi-Child Discount | Siblings | Up to 4 | ❌ | ❌ | ❌ | ❌ |
AA = American, DL = Delta, UA = United, WN = Southwest, AS = Alaska, B6 = JetBlue
American Airlines
American Airlines
$150/segmentAges: 5-14 mandatory | 15-17 optional
Booking: Phone only (1-800-433-7300)
Connections: Ages 8+ at approved hubs only
- Ages 5-7: Nonstop flights only
- No connections on partner airlines (only AA metal)
- No last flight of day at connecting city
- No overnight connections
Delta Air Lines
Delta Air Lines
$150/segmentAges: 5-14 mandatory | 15-17 optional
Booking: Phone only (1-800-325-8847)
Connections: Ages 8+ at approved hubs only
- Ages 5-7: Nonstop flights only
- No red-eye flights (9 PM - 5 AM departures)
- No last connecting flight of the day
- Delta/Delta Connection/Air France/KLM/Aeromexico connections only
- Cannot use kiosk or mobile check-in
- Sky Zone lounges at major hubs
- Barcoded wristbands for tracking
- 4-digit PIN for account security
- One fee covers up to 4 children on same itinerary
United Airlines
United Airlines
$150/segmentAges: 5-14 mandatory | 15-17 optional
Booking: Online or phone (1-800-864-8331)
Connections: ❌ Not allowed (any age)
- Nonstop flights only — NO exceptions
- No codeshare or interline flights
- Wristband ID system
- Special baggage tags
- Priority boarding
- Front-of-plane seating
- Free snack
Southwest Airlines
Southwest Airlines
$100/segmentAges: 5-11 mandatory | 12+ travel as "Young Travelers" (no UM service)
Booking: Online or phone (1-800-435-9792)
Connections: ❌ Not allowed
- Nonstop or same-plane through flights ONLY
- Same-plane = may make stops but NO plane change
- NO international flights
- Ages 12+ cannot use UM service (travel independently)
Alaska Airlines
Alaska Airlines ⭐ Best Value
$50-75/segmentAges: 5-12 mandatory | 13-17 optional
Booking: Online or phone (1-800-252-7522)
Connections: Ages 8+ at approved hubs only
Fee structure: $50 nonstop | $75 connecting
- Ages 5-7: Nonstop or direct only
- No flights departing 9 PM - 5 AM
- No last flight of day connections
- Maximum 2-hour layover
- Lanyard and wristband identification
- Complimentary Main Cabin meal on flights over 2 hours
- FREE for MVP Gold members!
JetBlue Airways
JetBlue Airways
$150/segmentAges: 5-14 mandatory | 15-17 optional
Booking: Online or phone (1-800-538-2583)
Connections: ❌ Not allowed (any age)
- Nonstop flights only — NO exceptions
- No flights to/from Europe (London, etc.)
- Maximum 3 UMs per flight
- No Mint (business class) seats
- Seated in last row for easy attendant access
- Priority boarding
- Carry-on allowed even on Blue Basic fares
Allegiant & Frontier: No UM Service
Allegiant Air & Frontier Airlines
N/AUM Service: ❌ NOT AVAILABLE
Minimum solo travel age: 15 years old
The Bottom Line
💰 Best Value
Alaska Airlines — $50-75 vs. $150 elsewhere. No contest.
🔀 Best for Connections
American Airlines — 10 approved hubs, most routing flexibility.
👨👩👧👦 Best for Multiple Kids
Delta — One fee covers up to 4 children.
😌 Simplest Policy
United or JetBlue — Nonstop only = no confusion.
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