Most airlines in the United States have partnerships with other airlines. The largest airlines are members of worldwide airline alliances - Skyteam, Star Alliance, or Oneworld.
- Skyteam: Continental, Delta and Northwest. Delta and Northwest have announced a proposed merger. Continental has announced a partnership with United and plans to leave Skyteam to join the Star Alliance.
- Star Alliance: United and US Airways. See above note re: Continental.
- Oneworld: American Airlines.
There are also a number of international carriers in each of the three alliances - click on the alliance names for more information.
If you have a frequent flier account with one airline, you don’t really need accounts with any of its partners – miles can be gathered and spent all in one place. Each airline has different requirements for redeeming miles for free travel; the large carriers are typically 25,000 miles for a space-available domestic roundtrip ticket.
If you don’t have a frequent flier account, it’s easy to set one up - here’s some links for your convenience.
- Alaska Airlines Mileage Plan*
- American AAdvantage
- Continental OnePass, Delta SkyMiles, or Northwest WorldPerks
- Frontier EarlyReturns or Airtran A+ Rewards
- JetBlue TrueBlue
- Midwest Miles
- Southwest RapidRewards
- Spirit Free Spirit
- United Mileage Plus** or US Airways Dividend Miles
*You can earn Mileage Plan miles with American, Alaska, Continental, Delta, and Northwest.
**United has a special program for college students: United College Plus.


