What "best" means depends on how you actually fly
There is no single best airline credit card because the right one depends on whether you fly one airline repeatedly, switch between carriers, take one big trip a year, or travel for work every month. A card that earns miles fast on a single airline's flights might charge an annual fee that makes no sense if you only fly twice a year. A card with no annual fee might earn miles so slowly that you never reach a free ticket.
The real choice is between two types: co-branded cards (issued by a bank in partnership with an airline, like United or Delta) and general travel cards (issued by a bank, earning miles or points you can use on any airline). Co-branded cards usually offer better perks if you fly one airline often. General travel cards give you flexibility if you switch airlines or want to use points for hotels and rental cars instead.
Start by looking at your last 12 months of flights. How many times did you fly? Which airlines? Did you book directly with the airline or through a travel site? The answers tell you whether a co-branded card makes financial sense or whether a general card with lower fees is smarter.
Key Takeaways
- Co-branded airline cards offer sign-up bonuses and perks like free checked bags, but charge annual fees that only pay off if you fly that airline at least a few times a year.
- General travel cards earn points on all purchases and let you move points to any airline partner, but usually earn fewer miles per dollar spent on flights.
- The annual fee on most co-branded cards ranges from $95 to $550, and many cards waive the first year or credit back part of the fee through travel credits.
- Sign-up bonuses (typically 50,000 to 100,000 miles) are worth roughly $500 to $1,500 in free travel, but only if you can meet the spending requirement within the time limit.
- Your credit score affects which cards you can open and what interest rate you will pay if you carry a balance, so check your score before you explore.
Co-branded cards: when they make sense
A co-branded card ties you to one airline and charges an annual fee, usually $95 to $550 depending on the card. In return, you get a sign-up bonus (often 50,000 to 100,000 miles), higher earning rates on that airline's flights, and perks like free checked bags, priority boarding, or lounge access.
The math works if you fly that airline at least three or four times a year. If you fly United four times a year and earn 25,000 miles per flight on a co-branded card, you collect 100,000 miles annually just from flying — enough for a domestic free ticket on most airlines. Add a $95 annual fee, and you are still ahead. If you fly once a year, the fee eats into any miles you earn.
The free checked bag perk alone saves money if you check luggage. Most airlines charge $35 to $40 per checked bag on each leg of a round trip. Fly round-trip twice a year and check a bag each time, and the free checked bags save you $280 to $320 — more than the annual fee on most cards.
General travel cards: flexibility over loyalty
A general travel card earns points or miles on all your spending — not just airline tickets — and you move those points to airline partners when you want a free ticket. These cards often have no annual fee or a lower fee ($95 or less), making them safer if your travel plans change.
The trade-off is earning rate. A co-branded United card might earn 4 miles per dollar on United flights; a general travel card might earn 2 miles per dollar on all flights. Over time, that difference adds up. But if you fly three different airlines in a year, or you want to use points for hotels and rental cars, the flexibility often outweighs the lower earning rate.
General travel cards also work well if you are not sure how much you will travel. You can open one, use it for everyday spending, and build points without paying an annual fee. If your travel picks up, you can add a co-branded card later.
Understanding sign-up bonuses and spending requirements
Most airline cards offer a sign-up bonus: 50,000 to 100,000 miles if you spend a certain amount within a set time, usually three to six months. A 50,000-mile bonus is worth roughly $500 to $750 in free travel value, depending on the airline and how you book.
The catch is the spending requirement. If a card requires you to spend $5,000 in three months to earn the bonus, and you normally spend $1,000 a month, you will need to shift spending to the card or make a large purchase (like a flight or hotel) to hit the target. If you cannot meet the requirement, you do not get the bonus.
Some people open a card specifically to meet a spending requirement for a sign-up bonus, then close the card after the first year. This works if you have the discipline to pay off the balance before interest charges kick in. If you carry a balance, the interest you pay will wipe out the bonus value.
Annual fees, credits, and when they pay for themselves
Most co-branded cards charge an annual fee, but many include credits that offset part or all of it. A card might charge $95 annually but include a $100 airline credit (good for tickets, seat upgrades, or baggage fees) and a $50 TSA PreCheck credit every five years. If you use both credits, the card costs you nothing.
Read the fine print on credits carefully. Some credits are automatic; others require you to book through the airline's website or use a specific payment method. A $100 airline credit is only useful if you actually fly that airline and can use the credit before it expires (usually one year).
Premium co-branded cards ($450 to $550 annual fee) include perks like free companion tickets, lounge access, or hotel night certificates. These cards only make sense if you fly frequently (10+ times a year) and can use all the perks. For most people, a mid-tier card ($95 to $150 annual fee) is the better choice.
How your credit score affects your options
Most airline cards require a credit score of 670 or higher, and premium cards often require 700 or higher. If your score is below 670, you may not be approved for any airline card, or you may be approved with a lower credit limit.
Your credit score also affects the interest rate you pay if you carry a balance. If you open a card to earn a sign-up bonus but cannot pay off the spending requirement before the statement closes, interest charges will pile up fast. Most airline cards charge 18% to 24% annual interest on balances. Carrying a $5,000 balance for one year costs $900 to $1,200 in interest — far more than any sign-up bonus.
Before you explore for an airline card, check your credit score (you can see it free through your bank or through sites like Credit Karma). If your score is below 670, focus on building it first. If your score is 670 or higher, you have options, but only explore if you can pay off the card in full each month.
Comparing cards side by side: what to look at
When you narrow down to two or three cards, compare them on these points: annual fee (and any credits that offset it), sign-up bonus and spending requirement, earning rate on airline flights and everyday purchases, and perks (checked bags, lounge access, priority boarding). A table can help you see the differences clearly.
Also check the airline's award chart or search tool to see how many miles a free ticket costs. If one airline charges 25,000 miles for a domestic flight and another charges 50,000, the card that earns miles faster on the cheaper airline is the better deal. Airline award prices change, so check the current rates before you decide.
Finally, read recent reviews from people who actually use the card. Look for comments about whether the perks work as advertised, whether the airline honors the benefits, and whether the earning rate matches what the card issuer claims.
Frequently Asked Questions
Can I open more than one airline card at the same time?
Yes, but each process temporarily lowers your credit score, and opening multiple cards in a short time can raise red flags with lenders. Most people space out applications by at least three months. If you want miles on two airlines, consider opening one co-branded card and one general travel card instead.
What happens to my miles if I close the card?
Your miles stay in your airline account — closing the card does not erase them. However, some airlines will close your frequent flyer account if you have no activity for 12 to 24 months, so keep flying or use your miles before you close the card.
Do I have to fly the airline to earn miles on the card?
No. You earn miles on every purchase you make with the card, whether you are buying groceries, gas, or a plane ticket. The earning rate is usually higher on airline purchases, but you build miles on everyday spending too.
What if I get denied for a card?
Denial usually means your credit score is too low, your income is too low, or you have too many recent credit inquiries. Wait three to six months, work on raising your credit score, and try again. You can also call the card issuer to ask why you were denied — sometimes they will reconsider if you explain your situation.
Are airline miles worth the annual fee if I only take one trip a year?
Usually not, unless the sign-up bonus is large enough to cover the fee and earn you extra miles. A 50,000-mile bonus might be worth $500 to $750, which covers the annual fee for several years. But if you only fly once a year after that, a no-fee general travel card is smarter.