Airline | Book round-trip ticket by phone | Preferred seat | Priority boarding | Ticket-change fee Domestic/International | | Fee to change flight to same destination on day of departure (1) |  | AirTran | $15 | $6 or $20 | $10 | $75/Not applicable | | $75 |  | Alaska | $15 | Not available | Not applicable | $75 online; $100 elsewhere/$75 online; $100 elsewhere | | $25 within six hours of departure |  | Allegiant | $44.97(2) | $6.99 or $8.99 | $9.99 | $50 per one-way flight/Not applicable | | $50 per one-way flight |  | American | $25 | $19-$39 | $10 | $150/$150-$300 | | $50 for domestic flights; $150-$300 for standby seat on international flights |  | Continental | $20 | $19 minimum | Not applicable | $150/$150-$250 | | $50 |  | Delta | $20 | Not applicable | Not applicable | $150/$250 | | $50 |  | Frontier | 0 | $20 | Not applicable | $100/$100 | | $50 |  | Hawaiian | $25; $15 for flights within Hawaii | $25 | $25 | $150; $30 for flights within Hawaii/$75 or $100 | | $150; $30 for flights within Hawaii |  | JetBlue | $15 | $10-$40 | Not applicable | $100/$100 | | $40 |  | Southwest | 0 | Not available | $10 | 0/Not applicable | | 0 |  | Spirit | $10 | $10-$25 | Not applicable | $100 online; $110 on telephone and at airport/$100 online; $110 on telephone and at airport | | $100 online; $110 on telephone and at airport/$100 online; $110 on telephone and at airport |  | United | $25 | $9-$159 | $9-$39 | $150/$250 | | $75 |  | US Airways | $25; $35 for international flights | $5-$30 | Not applicable | $150/$250 | | $50 |  | |
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