Best Credit Cards for Airfare Purchases: Co-Brand vs. Flexible Points

by joeheg

All of the larger airlines in the U.S. offer co-brand credit cards. They provide extra benefits to cardholders, from ones with no annual fees to premium cards costing up to $695 annually. While you’d think using a co-branded card would be the best choice for earning points with your flight purchase, that’s not always the case. Many times, you don’t earn any extra points for airfare purchases for having a more expensive card.

In most cases, instead of using a co-brand card, it’s better to use a card that earns flexible points like Membership Rewards, ThankYou Points or Ultimate Rewards. These cards earn more points and can be used on multiple airlines, only needing to transfer points into your airline mileage account when needed.

Here are the earnings multiples on airfare for the main flexible points cards from each bank:

American Express (Membership Rewards)

  • Platinum card ($695 annual fee) – 5x points on flights booked directly with airlines or with American Express Travel
  • Gold card ($250 annual fee) – 3x points on flights booked directly with airlines or with American Express Travel
  • Green Card – ($150 annual fee) – 3x points on flights directly with airlines, on third-party travel websites, and travel purchases on amextravel.com.

Chase (Ultimate Rewards)

  • Sapphire Reserve ($550 annual fee) – 5x total points on flights when you purchase travel through Chase Ultimate Rewards and  3x points on travel worldwide (including airfares purchased from airlines or travel agencies/websites)
  • Sapphire Preferred ($95 annual fee) – 5x total points on travel purchased through Chase Ultimate Rewards and 2x points on travel worldwide (including airfares purchased from airlines or travel agencies/websites)

Citi (Thank You Points)

  • Citi Prestige ($495 annual fee) – 5x points on purchases at airlines and travel agencies
  • Citi Premier ($95 annual fee) – 3x points on purchases at airlines and travel agencies

The AMEX Platinum and Citi Prestige offer 5x on airfare, but the AMEX card only counts purchases directly from the airline or their website. Of the $95 cards, the Citi Premier earns the most points on airline purchases, at 3x.

However, Citi has removed all of the travel protections from its products, such as trip delay and baggage delay, making them less favorable choices for airfare purchases. On the other hand, American Express has added trip delay coverage, while Chase cards always offered travel coverages. If you value additional travel insurance coverage, it might be best to use the AMEX or Chase cards.

So, how many miles will you earn by using an airline co-brand card to purchase airfare, and when does it make sense to do so? I’ve indicated which airlines are partners of one (or all) of the flexible currency cards so you can compare earnings potential between cards:

Alaska Airlines

$95 annual fee – 3x points

Allegiant Air card

$59 annual fee – 3x points

American Airlines cards issued by Barclays (Bilt Rewards Partner)

  • No annual fee – 1x points
  • Blue – $49 annual fee – 2x points
  • Red – $99 annual fee – 2x points
  • Silver – $199 annual fee – 3x points

American Airlines cards issued by Citi (Bilt Rewards Partner)

  • Mile Up – No annual fee – 2x points
  • Platinum – $99 annual fee – 2x points
  • Executive – $595 annual fee – 4x points

Delta Airlines (Membership Rewards transfer partner)

  • Blue – No annual fee – 2x points
  • Gold – $150 annual fee – 2x points
  • Platinum – $350 annual fee – 3x points
  • Reserve – $650 annual fee – 3x points

Frontier Airlines

$89 annual fee – 5x points

Hawaiian Airlines (Membership Rewards & Bilt Rewards transfer partner)

$99 annual fee – 3x points

JetBlue (Membership Rewards, Thank You and Ultimate Rewards transfer partner)

  • JetBlue card – No annual fee – 3x points
  • JetBlue Plus – $99 annual fee – 6x points

Southwest Airlines (Ultimate Rewards transfer partner)

  • Plus – $69 annual fee – 2x points
  • Premier $99 annual fee – 3x points
  • Priority – $149 annual fee – 3x points

Spirit Airlines

$79 annual fee – 3x points

Sun Country Airlines

$69 annual fee – 3x points

United Airlines (Ultimate Rewards & Bilt Rewards transfer partner)

  • Gateway – no annual fee – 2x points
  • Explorer – $95 annual fee – 2x points
  • Quest – $250 annual fee – 3x points
  • Club – $525 annual fee – 4x points

Comparisons

Airline co-brand credit cards have stepped up and increased the bonuses for purchasing airfare. JetBlue Plus and Frontier credit cards lead the pack, but not many cards pay over 3x.

So, which co-brand airline card would I consider using?

  • Frontier card – Earning 5x points on Frontier for airfare is the best way to earn points with that program. If you fly Frontier regularly, it does make sense and having the card also allows you to keep your Frontier miles from expiring if you go more than 6 months between flights.
  • Alaska card – Alaska miles are valuable for Alaska flights and flying on any of their many partners. Since Alaska miles are hard to earn any other way besides flying, using the co-brand card to earn 3x Alaska points for airfare is a deal many can’t pass up.
  • United Explorer card – The United card isn’t the best way to earn miles, and I’d usually suggest using a Sapphire card and earning 2-3x Ultimate Rewards points. However, United requires using the card for your airfare if you want to take advantage of the free checked bag benefit. This only matters if you don’t otherwise get free checked bags from having United status.
  • American Airlines cards – Spending with the American Airlines co-brand cards can help you earn AAdvantage status.

None of the reasons to use a co-brand card is because they earn the most amount of points. You use co-brand cards to earn points in a specific program that is not a transfer partner of any bank. If you have a goal and are working towards a particular redemption, using a co-brand card for airfare makes sense, even if doing so means you’re going to earn fewer points than you could have otherwise.

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This post first appeared on Your Mileage May Vary

10 comments

Christian March 28, 2019 - 3:27 pm

A big consideration for me is travel protection for delays/cancellations. As one example, Amex gives none while CSP covers you really well even on award tickets if you pay the taxes with the card.

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joeheg March 28, 2019 - 4:22 pm

I almost exclusively use the Prestige for travel bookings because of the coverage and there’s no excuse not to now that it pays 5x on airfare.

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Adam March 28, 2019 - 3:47 pm

The legacy Chase United MileagePlus Select offers 3X on United flights and 2X on *A flights along with up to 5k PQMs but does not offer trip delay/travel insurance.

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joeheg March 28, 2019 - 4:11 pm

I didn’t include cards which aren’t available through a new application or thru a PC. People who have those cards are more than familiar with their benefits.

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Steve March 28, 2019 - 3:58 pm

This story is certainly incomplete since you at only looking at mileage earning. Points and miles are generally valued at a penny each or thereabouts. If you use the Alaska card for you and six others on your reservation, you can save $490.00 in bag fees on a round trip. In my book, $490.00 saved is $490.00 earned.

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joeheg March 28, 2019 - 4:20 pm

You’re correct that the article just looks at mileage earning. To look into every variable, the article would need to be the length of a short story. But to take your example, with Alaska Airlines you only need to be traveling on the reservation and have your Mileage Plus number on file to get the free baggage credit for you and up to six others. It is not necessary to actually pay with the card, although as I mentioned in the article you still might want to due to the value of Alaska miles. The only airline who strictly follows the policy of requiring you to pay for the ticket with the card to get free bags is United.

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DaninMCI January 15, 2020 - 9:52 am

Good post on this. One additional thing that I fail to remember is that the value of airline points varies by carrier. For example I have a Spirit Airline card that I can earn 2x when I book with it on Spirit but I’d likely be better off using my CSR for this purchase unless I “need” more Spirit miles.

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beachmouse November 13, 2021 - 12:05 pm

One thing to monitor in the Delta AmEx realm is special offers for airfare purchases. IIRC my Skymiles Platinum card is signed up to get 5x Skymiles on Delta purchases through the end of the year and there was a good cash rebate offer there for Air France ticket purchases with that card earlier this fall.

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JohnB November 13, 2021 - 12:51 pm

American makes you to use their AA cards as well, to get free bags. I know because P2 has an AA card and while my tickets were charged on that card, AA made me, solo, pay for bags. For us, we don’t use AA anymore.

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Tennen March 5, 2024 - 7:35 pm

It’s a double-edged sword when using airline credit cards. On the one hand, you need to use them for early boarding, checked bag, and other benefits. On the other, you lose out on all the protections. Almost had a forced overnight on an AS weather diversion, where I paid for the trip with the Bank of America AS card because I used the companion fare. We would’ve had to pay out of pocket for the $500 hotel if we were stuck. Wouldn’t have been an issue with the Amex Plat or Chase Sapphire Reserve.

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