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An airline's frequent flyer program gives something back to people who keep coming back: miles or points to spend on flights and upgrades, and status levels that make travelling easier. Joining is usually free. The part that takes care is knowing what you are actually earning, and what it will still be good for a year from now.
Two kinds of currency
Most programs keep two balances that are easy to mix up.
- Miles or points are what you spend. They pay for award flights, upgrades and partner rewards.
- Status credits decide your tier. Depending on the program they are counted in miles flown, number of flights or money spent.
One purchase can earn one without the other. Some cheaper fares earn fewer status credits, and in many programs card spending earns points to spend but nothing toward status. Before you count on a purchase to move you up a tier, check which balance it feeds.
How status carries across airlines
Airlines in the same alliance recognise each other's top tiers, so status earned with one airline can be used on the others. The three big alliances each group their members' tiers into a few shared levels.
| Alliance | Shared levels | What the higher level adds |
|---|---|---|
| Star Alliance | Silver, Gold | Silver gives priority on waitlists and airport standby, and nothing more. Gold adds priority check-in and boarding, lounge access, extra baggage and priority baggage handling. |
| oneworld | Ruby, Sapphire, Emerald | Ruby gives priority treatment such as waitlist and standby priority. Sapphire adds business class lounges and priority boarding. Emerald adds first class lounges, fast-track security at selected airports and a larger baggage allowance. |
| SkyTeam | Elite, Elite Plus | Elite gives priority check-in and boarding, waitlist priority and extra baggage. Elite Plus adds lounge access on international flights, SkyPriority services, priority baggage handling and a guaranteed economy seat on sold-out long-haul flights, if you book at least 24 hours ahead. |
Each airline decides which of its own tiers match which shared level, and the exact benefits change with the airline, the route and the cabin. Before you plan around a perk, especially lounge access, read the alliance's current benefits page and your airline's own rules.
Pick one program and stay with it
Each flight can earn miles in only one program, even when several airlines in the alliance fly it. Spreading your trips over many programs usually leaves every balance too small to use. A simple way to choose:
- Look at which airline or alliance you will fly most in the next year.
- Join that program, which is usually free, and add your number to every booking when you make it, not at the airport.
- If you fly more than one alliance, keep one main program per alliance rather than one for every airline.
Know that a mile's value can change
Programs set what their points are worth, and they can change it. Card issuers and loyalty programs generally reserve the right to change the value of rewards, including at the moment you redeem them. A balance you save for years may buy less later. Two habits help:
- Spend points when you have a real trip in mind, instead of treating them as a savings account.
- Compare the total price. Some award tickets still ask you to pay taxes and fees in cash, so set that against the cash fare before you decide.
Keep your balance alive
Every program has its own expiry rule. Some points expire after a period without activity, and others do not expire at all. Look the rule up once, write down the date and set a reminder before it. Earning or spending even a small amount often starts the clock again, but whether it does is up to the program.
A short checklist
- Join one program for the airline or alliance you fly most.
- Add your number whenever you book.
- Know which of your balances you can spend and which only counts toward status.
- Write down the expiry date for every program that has one.
- Before you chase a higher tier, add up what the extra flights cost and which perks you would really use.
Sources
Written from these pages and checked against them on October 5, 2026. Programs and rules change, so check the provider’s current terms before you decide.
General information, not financial, legal or travel advice. Your own card terms and the provider’s current rules always come first.