A map, camera, and passport on a table

There isn't one best alliance. The right one depends on three things: which airline runs your home airport, which bank points you collect, and where you want to go. Here's how I'd work it out.

If you need the basics first, start with my alliances explainer.

By home airport

Your home airline decides which alliance you'll fly most, and where you'll pick up status.

If your home airline is… Your alliance
United Star Alliance
Air Canada Star Alliance
American oneworld
Alaska or Hawaiian oneworld
Delta SkyTeam
Aeromexico SkyTeam

Here's a simple way to read that. If you live near a United hub, Star Alliance will probably give you the most nonstop options and the easiest connections. If you live near an American, Alaska, or Hawaiian hub, it'll usually be oneworld. If you live near a Delta hub, it'll usually be SkyTeam. Hawaiian joined oneworld with Alaska in April 2026, so West Coast and Hawaii flyers now have more oneworld options than before.

By the bank points you collect

According to each issuer's own transfer page, here's where the main bank points can reach:

Points currency Alliances you can reach
Amex Membership Rewards All three
Chase Ultimate Rewards All three
Citi ThankYou Points All three
Capital One Miles All three

Every one of them reaches all three, so the better question is which programs. Chase is the only one of the four that transfers to United MileagePlus. Amex is the only one that transfers to Delta SkyMiles and ANA. Flying Blue (SkyTeam) and Singapore KrisFlyer (Star Alliance) are on all four lists. For the full program-by-program breakdown, see the alliance pages:

By destination

Where you want to go Alliance to look at first
Europe Any of the three
Japan Star Alliance or oneworld
South Korea SkyTeam (Korean Air)
Southeast Asia Star Alliance
Middle East oneworld (Qatar, Royal Jordanian, Oman Air)
Australia and the South Pacific oneworld or Star Alliance
Africa Star Alliance
Latin America Star Alliance or SkyTeam
Hawaii oneworld

Europe: every alliance works. Star Alliance has Lufthansa, SWISS, Austrian, TAP, ITA Airways (which joined April 1, 2026), and more. oneworld has British Airways, Iberia, and Finnair. SkyTeam has Air France, KLM, Virgin Atlantic (since 2023), SAS (since September 2024), and Air Europa, which is still SkyTeam.

Asia: Star Alliance has ANA, EVA Air, Singapore, and THAI. oneworld has Japan Airlines, Cathay Pacific, and Malaysia Airlines. SkyTeam has Korean Air, China Airlines, and Vietnam Airlines. Keep in mind that Asiana leaves Star Alliance at the end of December 16, 2026 (Korea time), leaving 25 members from December 17.

Middle East and South Pacific: oneworld covers these well, with Qatar, Royal Jordanian, Oman Air, Qantas, and Fiji Airways. Emirates and Etihad aren't in any alliance.

Africa: Star Alliance has Ethiopian, EgyptAir, and South African Airways. oneworld has Royal Air Maroc, and SkyTeam has Kenya Airways.

Mixing destinations? Look at award stopovers and open jaws to fit more into one booking. If you end up in SkyTeam, my Flying Blue guide is a good next step.

To find actual seats, I search Seats.aero, which shows award space across lots of programs at once. I get commissions for purchases made through links in this post. Search Seats.aero

My take

If you only collect one kind of bank points, don't pick an alliance. Pick the program within it that your points reach, then search that program's partners. If you fly a lot, go with your home airport's alliance for status, and use transferable points for the trips that don't fit.

FAQ

Which airline alliance is the best?

It depends on your home airport, your points, and where you fly, but Star Alliance is the largest.

Which alliance is biggest?

Star Alliance has the most member airlines, with 26 until Asiana leaves in December 2026.

Which alliance is United in?

United is in Star Alliance.

Which alliance is American Airlines in?

American Airlines is in oneworld.

Which alliance is Delta in?

Delta is in SkyTeam.

Can I use miles from one alliance on another?

Generally no; miles book partners within the program's alliance and its separate non-alliance partners.

Sources

Not financial advice. Program rules and partners change, so check the official page before you transfer or book. Drafted with AI assistance.

All guides