Card comparison
Amex Platinum vs United Club Infinite: which lounge card fits?
Amex Platinum covers five networks across airlines; United Club Infinite opens United Clubs alone at a $370 lower fee.
- 955
- 53
- 427
- 34
Side by side
No lounge network in common.
Airport by airport
Lounges each card opens, busiest airports first.
And 409 more airports; each card's page lists them all.
The real difference#
There is zero overlap between these two cards. Amex Platinum unlocks Priority Pass, Centurion Lounge, Plaza Premium, Escape Lounges, and Delta Sky Club, the last only when you are flying Delta the same day.
United Club Infinite unlocks a single network, United Club. That is a deliberate design: it is a card for United flyers, not a general-purpose lounge key. So this comparison is between a wide net and a narrow, deep one.
Where each card has the edge#
Amex Platinum charges $895 annually; United Club Infinite charges $525. The Platinum's strength is breadth: it has something to offer at airports across airlines and countries, and Centurion access carries no airline condition at all. Delta flyers get a bonus through the conditional Sky Club grant.
United Club Infinite makes sense for someone anchored to a United hub who flies United on most trips. In that scenario, United Clubs are the lounges you actually pass, and the Platinum would open none of them in Lounge Frog's data. The reverse is equally true: a United loyalist who also flies internationally on partner airlines may find Priority Pass and Plaza Premium fill gaps that the United card cannot.
How I'd make the choice#
Note your next three likely airports and the airline for each, then compare the lounges each card opens in those terminals. Check enrollment, whether a same-day boarding pass is required at the door, visit caps, and guest fees. Terms on both cards can move, so confirm current details with the issuer before applying. Our methodology explains how grants are catalogued.
Putting this into practice#
I would start this comparison with the next few trips already likely to happen. For each card, I'd list the lounges that fit those airports and departure areas, then remove locations that would require an impractical detour. That is a more useful comparison than adding up every lounge in a worldwide network, most of which may never help with those trips.
Guest rules deserve their own line in the calculation. A card that works well for one person can be a different proposition for a couple or family. I'd compare the cost for the party that actually travels, including any separate membership or additional-card charge. I would not assume a benefit on one version of a card applies to another version.
The annual fee is only part of the decision. I would value other benefits at the amount I would realistically use, rather than automatically count a credit at face value. A benefit that requires a booking I would not otherwise make does not reduce my costs in the same way as money saved on an existing plan.
The trade-offs I would check#
I would check enrollment and the credential needed at reception before relying on either card. Some benefits are used through a separate membership rather than by showing the payment card. The issuer's current terms should settle the visit allowance, guest treatment and any airline or fare restriction. The comparison above helps identify the differences worth checking.
Related reading#
Cite this article
Patrick Karsh. “Amex Platinum vs United Club Infinite: which lounge card fits?.” Lounge Frog. Published 2026-09-29. Updated 2026-10-14. https://www.loungefrog.com/cards/amex-platinum/vs/united-club-infinite
Wikipedia citation
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Quick answers
Which has more lounge access, the Platinum Card or the United Club Card?
The Platinum Card: 955 lounges in our directory against 53.
Which lounge networks do they share?
None; every network either card opens is its own.
Where does only one of them get you in?
The Platinum Card alone reaches 395 airports and the United Club Card alone 2 airports.
What do they cost?
The Platinum Card is $895 a year and the United Club Card $695, as last published by each issuer.
Written and checked to our editorial standards. Scores follow our methodology. Join the discussion below.
