THE SHORT ANSWER

For earning toward United Polaris from Newark, start with Chase Sapphire Preferred and its United transfer option. For flexible JFK awards, compare Amex Gold against your spending and transfer options. Consider Platinum for usable lounge benefits, rather than as the default points-earning card.

Our shortlist by booking goal

Your goalStarting optionWhy it fitsMain limitation
United awards from EWRChase Sapphire PreferredDirect United transfer option; $95 annual feeA points balance does not guarantee a Polaris award
Flexible airline awards from JFKAmerican Express GoldMembership Rewards; dining and US grocery earning categoriesAnnual fee and category caps; match the transfer partner to an actual seat
Frequent eligible lounge visitsAmerican Express PlatinumLounge benefits can be useful for a frequent travelerHigh annual fee; access depends on airline, ticket and location
One upcoming premium tripYour existing points or a cash fareAvoid adding annual costs for a speculative tripYour existing balance may not cover the available award

These are US consumer-card starting points, not a ranking of every card. Our recommendations assume you pay your statement balance in full. If interest or extra spending would erase the savings, a rewards card is a poor booking strategy. Compare the current issuer terms before applying. No affiliate compensation determines this shortlist.

Sources: Chase Sapphire Preferred: fees, rewards and transfer partners, American Express Gold: current card terms, American Express Platinum: current card terms.

EWR and United: choose the booking path first

Sapphire Preferred is our starting choice for a traveler focused on earning transferable points for United bookings. Check United award availability for the actual dates, passenger count and cabin before building a balance around a theoretical price. Partner-program searches can be worth comparing, but partners may have access to fewer seats than United sells through its own program.

Do not confuse a transferable-points card with a United lounge-membership card. A card offering United Club access does not itself grant Polaris Lounge access. If your premium ticket already gives you the lounge access you will use, buying another lounge benefit may add little value. Compare the annual cost against repeat trips outside that premium ticket, not against one aspirational lounge visit.

JFK and Delta One: earning and access are separate decisions

For a JFK traveler who spends heavily in Amex Gold’s eligible food categories, compare its annual cost with the additional points you can realistically earn. Then identify the airline program that can issue the itinerary. Flying Blue, Virgin Atlantic or another partner search should be tested against live inventory; partner access to Delta flights is not guaranteed.

Platinum is a separate benefits decision. Its eligible Sky Club access has visit limits and ticket conditions. A card lounge benefit should never be described as automatic Delta One Lounge admission: check the lounge’s own rules and your fare. If the ticket already supplies the access you want, value the card on the remaining trips and benefits you actually use.

Sources: American Express Platinum: lounge access terms.

Use an annual-cost worksheet before applying

  1. List the annual fee and any additional-card fees from the issuer’s current terms.
  2. Count credits only when they replace spending you already planned.
  3. Estimate incremental rewards compared with the card you already own.
  4. Count only lounge visits with eligible tickets at reachable terminals.
  5. Check offer eligibility, spending requirements, APR and benefit enrollment.
  6. Subtract the annual cost from your conservative benefit estimate.

Illustration: a card costs $300 more per year than your current setup. You value usable benefits at $100 and incremental points at $120. The expected net result is negative $80, even if the advertised credits look impressive. This is a budgeting example, not a live product quote. A welcome offer can change year-one value, but it does not fix a poor renewal-year fit.

For the flight itself, use our cash-vs-points calculator. Do not count the same points or statement credit twice in the card worksheet and trip calculation.

Questions, answered

Does a United credit card unlock a Polaris seat?

A card may offer program benefits under its terms, but it does not guarantee an available business-class award or automatically grant Polaris Lounge admission.

Should I open a card just for one Delta One flight?

Price the cash fare and awards first. A card only helps if its costs, eligibility and realistic earning timeline fit that trip.

Sources & verification

  1. Chase Sapphire Preferred: fees, rewards and transfer partners
  2. American Express Gold: current card terms
  3. American Express Platinum: current card terms
  4. American Express Platinum: lounge access terms
  5. Chase: how point transfers work
  6. American Express: transferring Membership Rewards

Source review: September 30, 2026. Tables combine sourced facts with editorial decision analysis. Examples are hypothetical unless identified otherwise. Editorial methods & corrections.