The best flyer miles card depends on which airline you fly most, not on the card itself
There is no single "best" miles card because the value you get depends entirely on which airline you actually use. A card that earns miles on Delta flights is worthless if you fly United. The real choice is simpler: pick the airline you fly most often in the next two to three years, then choose a card from that airline's own program or a partner card that feeds miles into it.
The second thing to know is that miles cards come in two types. Airline-branded cards are issued by the airline itself (Delta American Express, United Chase Visa) and earn miles fastest on that airline's flights. General travel cards are issued by banks and let you earn miles on any airline, but usually at a slower rate. Which type makes sense depends on how much you fly and whether you're loyal to one airline or bounce around.
Before you choose any card, know what miles are actually worth to you. A mile is not worth one cent. Depending on the airline and the flight, a mile might be worth half a cent or two cents or almost nothing. If you fly rarely or only short routes, you might never accumulate enough miles for a free ticket. If you fly frequently or on long routes, miles can be genuinely valuable. The card's sign-up bonus (usually 50,000 to 100,000 miles) is often the only miles you'll ever use.
Key Takeaways
- Airline-branded cards earn miles fastest on that airline's flights and come with perks like free checked bags, but only make sense if you fly that airline regularly.
- General travel cards let you earn miles on any airline but at a slower rate, and work best if you fly multiple airlines or haven't settled on one yet.
- The sign-up bonus is usually the biggest miles you'll earn, so compare what each card offers for new cardholders before looking at ongoing earning rates.
- Miles are worth different amounts depending on the airline and the flight, so calculate whether you'll actually use the miles you earn before choosing a card.
- Annual fees on airline cards often come with a travel credit or free ticket that can offset the cost if you use them, but only if you actually fly that airline.
Airline-branded cards: fastest miles if you're loyal to one airline
Airline-branded cards earn the most miles per dollar spent, usually 2 to 3 miles per dollar on purchases with that airline and 1 mile per dollar on everything else. They also come with perks that matter if you fly often: a free checked bag on every flight, priority boarding, and sometimes a free ticket after you spend a certain amount in a year.
The catch is the annual fee. Most airline cards charge $95 to $550 per year. Some of that fee is offset by a travel credit (usually $100 to $200 that you can use on that airline) or a free domestic ticket after you meet a spending threshold. But you only benefit from these perks if you actually fly that airline multiple times a year. If you fly Delta twice a year and United once, a Delta card is a waste of money.
The big airlines all have multiple branded cards at different fee levels. Delta, United, American, and Southwest each offer cards with no annual fee (though these earn fewer miles), cards with a $95 annual fee, and premium cards with higher fees and bigger perks. Start by looking at the no-fee or $95 version of your airline's card. If you fly that airline at least four times a year, the perks usually pay for themselves.
General travel cards: flexibility if you fly multiple airlines
If you don't fly the same airline consistently, or you haven't decided which airline to be loyal to, a general travel card gives you more flexibility. These cards earn miles that you can transfer to any airline partner, or you can redeem them for cash back or other travel purchases. Chase Sapphire Preferred and American Express Gold are the most common examples.
The tradeoff is earning rate. General travel cards usually earn 2 miles per dollar on travel purchases (flights, hotels, rental cars) and 1 mile per dollar on everything else. That's slower than an airline card's 2 to 3 miles on that specific airline. But if you fly three different airlines a year, you're not locked into one earning structure.
These cards also tend to have higher annual fees ($95 to $695) but offer broader travel credits that work with any airline or hotel. A $300 annual travel credit on a general card is more useful than a $100 credit on a specific airline if you don't fly that airline often.
How to compare sign-up bonuses across cards
The sign-up bonus is the miles you earn just for opening the card and spending a certain amount in the first few months, usually $3,000 to $5,000. These bonuses range from 40,000 to 150,000 miles depending on the card. For most people, the sign-up bonus is the only meaningful miles they'll ever earn, so this number matters more than the ongoing earning rate.
To compare bonuses fairly, convert them to a dollar value. If a card offers 75,000 miles and you estimate those miles are worth 1 cent each (a conservative estimate), that's $750 in value. If the card has a $95 annual fee and a $100 travel credit, your net cost in year one is negative. But if you won't use the travel credit or the card's perks, you're paying $95 for $750 in miles, which is still a good deal — as long as you actually use those miles.
Check the spending requirement carefully. A 100,000-mile bonus sounds better than 75,000 miles, but if it requires $10,000 in spending instead of $5,000, and you only spend $6,000 naturally, you'll never hit the bonus. Pick a card where you can meet the spending requirement without changing your habits.
What to know about airline partnerships and mile transfers
If you earn miles with a general travel card, you'll transfer them to an airline partner. Chase Sapphire Preferred, for example, lets you transfer points to 15 different airlines. American Express Gold transfers to 18 airlines. The transfer rate is usually 1 to 1 — one point transfers to one mile — but some cards offer bonus transfers (like 1.25 miles per point) to certain airlines.
The catch is that not all airlines value miles the same way. Transferring 50,000 points to Southwest might get you a free flight, but transferring 50,000 points to United might only get you a partial flight. Before you choose a general travel card, check which airlines it partners with and whether those airlines are ones you actually fly.
Also know that airline partnerships change. A card that transfers to 15 airlines today might transfer to 12 next year. This is rare, but it's another reason to pick a card based on the airline you fly most, not on the number of partners.
Annual fees and perks: when they're worth the cost
Most miles cards with annual fees include a travel credit that offsets some or all of the cost. A $95 card might come with a $100 airline credit. A $550 premium card might come with a $300 travel credit plus a free domestic ticket after you spend $10,000 in a year.
These perks only have value if you use them. If you fly once a year and the card's $100 credit expires unused, you've paid $95 for nothing. If you fly four times a year and use the $100 credit on every trip, the card is essentially free. Calculate your own flying habits before you sign up.
Some cards also waive the annual fee in the first year, so you can test whether the perks are worth it before you commit. Others let you downgrade to a no-fee version of the same card after the first year if you decide the perks aren't worth it. Check the card's terms before you apply.
Red flags: what to avoid when choosing a miles card
Avoid cards that charge high annual fees but don't come with meaningful perks or travel credits. A $450 card that gives you a $50 credit is a bad deal unless the earning rate or sign-up bonus is exceptional.
Avoid cards that require you to change your spending habits to hit the sign-up bonus. If you need to spend $5,000 in three months to get the bonus, but you normally spend $1,500 a month, you'll have to manufacture spending. That defeats the purpose of a rewards card.
Avoid picking a card based on a friend's recommendation without checking whether it matches your own flying patterns. Your coworker's favorite Delta card might be worthless if you fly United.
Frequently Asked Questions
How many miles do I need for a free flight?
It varies by airline and the flight. A short domestic flight might cost 25,000 miles, while a long international flight might cost 100,000 miles or more. Check your airline's award chart before you choose a card, so you know whether you'll realistically earn enough miles for a trip you actually want to take.
Can I use miles from one airline on another airline's flights?
Usually not directly. Miles are locked to the airline that issued them. However, if you earn miles with a general travel card, you can transfer those miles to a different airline partner. Airline-branded cards don't offer this flexibility.
What happens to my miles if I close the card?
Your miles stay in your airline account and don't disappear. Closing the card doesn't affect the miles you've already earned. However, you'll stop earning miles on new purchases, and you'll lose any perks like free checked bags that came with the card.
Is it worth getting multiple miles cards?
Yes, if you fly multiple airlines regularly. You could have a Delta card for Delta flights, a United card for United flights, and a general travel card for everything else. But each card has an annual fee, so only add cards if you'll actually use the perks and earn miles on that card regularly.
Do miles expire?
Most airlines don't expire miles as long as you have account activity at least once every 12 to 24 months. Activity usually means earning or redeeming miles, but some airlines count a credit card purchase as activity. Check your airline's policy, because expiration rules vary.