Most people earn miles with one airline and only ever search that airline’s own flights. That habit costs you. Your United or American miles can book seats on dozens of other carriers, often at better prices than the airline’s own flights, and the rules that make that possible come from airline alliances.
Once you understand how airline alliances work, you stop asking “where does my airline fly?” and start asking “where can my miles take me?” This guide explains the three major alliances as they stand in late 2026, what has changed this year, and how to use alliances to get more out of your points and miles.
What Is an Airline Alliance?
An airline alliance is a formal agreement among member airlines to link their networks. For you as a traveler, membership means three practical things:
- You can earn miles on any member airline and credit them to the frequent flyer program you already use.
- You can redeem those miles for award seats on other member airlines.
- Elite status with one member is recognized across the whole alliance, with perks like lounge access, priority boarding and extra checked bags.
Alliances are not the only kind of airline partnership. Many of the best redemptions come from one-off deals between two airlines. Alaska Airlines’ Atmos Rewards program, for example, partners with carriers that sit outside Oneworld, and American Airlines has its own codeshare with STARLUX, which is not in any alliance. Think of alliance membership as the baseline you can count on, then look for extra partnerships on top of it.
The Three Major Airline Alliances in 2026
Every major US airline belongs to one of three alliances. The table below summarizes where each one stands as of October 2026.
| Alliance | Members | US member airlines | Programs worth knowing | 2026 changes |
|---|---|---|---|---|
| Star Alliance | 26 | United | United MileagePlus, Air Canada Aeroplan, Avianca LifeMiles, Turkish Miles&Smiles, ANA Mileage Club | ITA Airways joined in April; Asiana leaves in December |
| Oneworld | 15 | American, Alaska, Hawaiian | American AAdvantage, Atmos Rewards, British Airways Avios, Qatar Privilege Club, Cathay Asia Miles | Hawaiian joined in April; Philippine Airlines invited to join |
| SkyTeam | 18 | Delta | Delta SkyMiles, Air France-KLM Flying Blue, Virgin Atlantic Flying Club | Lost ITA Airways to Star Alliance; Korean Air absorbing Asiana |
Membership changes regularly, so check the official member lists at Star Alliance, Oneworld and SkyTeam before you plan around a specific airline.
Star Alliance
Star Alliance is the largest of the three by member count. Its 26 airlines include United, Air Canada, Lufthansa, SWISS, Austrian, Singapore Airlines, ANA, EVA Air and Turkish Airlines. ITA Airways, Italy’s flag carrier, became the newest member on April 1, 2026, after moving over from SkyTeam as part of the Lufthansa Group.
The big change ahead is Asiana Airlines. Asiana is leaving Star Alliance on December 16, 2026 as it merges into Korean Air. Star Alliance has said members can still earn miles on Asiana flights that departed on or before October 15, 2026, and award travel on Asiana must be completed by December 16. If you hold an Asiana award booked through a Star Alliance program for travel after that date, contact the program you booked with now.
Oneworld
Oneworld has grown quickly. Fiji Airways became a full member in April 2025, Oman Air followed in June 2025, and Hawaiian Airlines joined in April 2026. Its 15 member airlines include American, Alaska, British Airways, Iberia, Finnair, Qatar Airways, Cathay Pacific, Japan Airlines and Qantas, and Hawaiian Airlines now flies in the alliance alongside its sister airline Alaska.
Philippine Airlines was invited to join as a member-designate in June 2026, which will add better coverage of Southeast Asia once it completes integration. You can read more about what that means for your miles in our post on Philippine Airlines joining Oneworld.
SkyTeam
SkyTeam is anchored in the US by Delta and includes Air France, KLM, Korean Air, Virgin Atlantic, Aeromexico, Vietnam Airlines and SAS, which switched over from Star Alliance in 2024. For US travelers, the most useful SkyTeam programs are often not Delta’s own but Air France-KLM Flying Blue and Virgin Atlantic Flying Club, because both are easy to reach with transferable bank points.
Why Airline Alliances Matter for Award Travel
1. You get far more award seats to choose from
When your own airline has no award space, a partner often does. American AAdvantage miles can book Qatar Airways, Japan Airlines and Cathay Pacific, which opens routes American does not fly at all. If you regularly struggle to find seats, our guide on finding award availability when seats are limited covers how to search partner inventory step by step.
2. The same seat can cost very different amounts
Each frequent flyer program prices partner awards using its own rules. A single Lufthansa business class seat can typically be booked with United MileagePlus, Air Canada Aeroplan or Avianca LifeMiles, and each program will ask for a different number of miles and different taxes. Because the seat is identical, the only thing that changes is your cost. This is the single most important reason to learn which programs belong to which alliance.
3. Some programs add fuel surcharges and others do not
Carrier-imposed surcharges can add hundreds of dollars to an award ticket. United MileagePlus does not add them on partner awards, while British Airways Avios bookings on British Airways’ own long-haul flights carry substantial surcharges. Booking the same alliance flight through a different program is often the easiest way to avoid them.
4. Elite status travels with you
Each alliance has its own status tiers that map to member programs. United Premier Gold and above earns Star Alliance Gold, which includes lounge access on international itineraries. American’s Platinum status maps to Oneworld Sapphire and Executive Platinum to Oneworld Emerald. Delta Gold Medallion and above earns SkyTeam Elite Plus. If you fly one alliance often, concentrating your flying there pays off in recognition well beyond your home airline.
5. Connections are protected on one ticket
Alliance partners can sell connecting flights on a single ticket with bags checked through to your final destination. If your first flight is delayed and you miss the connection, the airline has to rebook you. On two separate tickets, a missed connection is your problem to solve.
How Transferable Points Unlock Each Alliance
You do not need to earn airline miles directly to use alliances. Bank points from Chase Ultimate Rewards, Amex Membership Rewards, Citi ThankYou and Capital One transfer into airline programs, and each program opens up its entire alliance. The table shows common transfer routes.
| Airline program | Alliance | Transfer from (examples) |
|---|---|---|
| United MileagePlus | Star Alliance | Chase Ultimate Rewards |
| Air Canada Aeroplan | Star Alliance | Chase, Amex, Capital One |
| Avianca LifeMiles | Star Alliance | Amex, Citi, Capital One |
| Turkish Miles&Smiles | Star Alliance | Citi, Capital One |
| British Airways Avios | Oneworld | Chase, Amex, Capital One |
| American AAdvantage | Oneworld | Citi ThankYou |
| Cathay Asia Miles | Oneworld | Amex, Citi, Capital One |
| Air France-KLM Flying Blue | SkyTeam | Chase, Amex, Citi, Capital One |
| Virgin Atlantic Flying Club | SkyTeam | Chase, Amex, Citi, Capital One |
| Delta SkyMiles | SkyTeam | Amex Membership Rewards |
Transfer partners and ratios change, so confirm the current list in your bank’s rewards portal before you move anything. Transfers are one-way, and once points land in an airline account they are exposed to that program’s future changes. Our guide to miles and points devaluation explains why holding flexible points until you are ready to book is usually the safer move.
7 Tips to Get More From Airline Alliances
- Search the alliance, not the airline. Award search tools such as PointsYeah, Seats.aero and point.me show partner space across many programs at once, which saves hours of checking airline sites one by one.
- Price the same seat in at least three programs. Once you find space, check what it costs through every program in that alliance you can reach with your points.
- Check taxes and surcharges before you transfer. A lower mileage price can be wiped out by high cash fees.
- Keep points flexible until you find space. Transfer only when you have confirmed the award is bookable.
- Credit flights to the program you actually redeem from. You do not have to credit a Lufthansa flight to Lufthansa. Send the miles to the program where they are most useful to you.
- Watch for alliance changes. Exits like Asiana’s can cancel earning and redemption options with only a few months’ notice.
- Book connections on one ticket whenever you can. The protection on misconnects is worth more than a small saving on separate tickets.
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Takeaway
Airline alliances turn one set of miles into access to dozens of airlines. In 2026, Star Alliance has 26 members, Oneworld has 15 and SkyTeam has 18, with ITA Airways, Hawaiian Airlines and Asiana driving the biggest changes. The travelers who get the most value are the ones who search the whole alliance, price the same seat across several programs, and keep their bank points flexible until the right award shows up. Learn which alliance your favorite programs belong to, and your points will take you much further.
