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Side-by-side

Blue Business Plus from Amex vs United Explorer Card

Both are well-respected travel cards. The Blue Business Plus from Amex comes from American Express at $0/yr; the United Explorer Card from Chase at $150/yr. Below: side-by-side specs, an opinionated verdict, and the FAQs people actually ask before applying.

Bottom line

For most people the United Explorer Card is the stronger pick today, the sign-up bonus is meaningfully larger ($770 more in estimated value) than the Blue Business Plus from Amex's. Get the United Explorer Card first; revisit the Blue Business Plus from Amex after you've earned that bonus.

FeatureBlue Business Plus from AmexUnited Explorer Card
Annual fee$0$150
Sign-up bonus15,000 Membership Rewards points50,000 miles + 10,000 AU bonus
Bonus value (est.)$270$1,040
Min spend to unlock bonus$3,000 in 3 mo$3,000 in 3 mo
IssuerAmerican ExpressChase
Card categorybusinessairline
Best earning category (All_purchases_first_50k_per_year)2x1x
Transfer partnersamex-mrNone
Headline benefits
  • 2x MR on all purchases up to $50k/yr
  • $0 annual fee
  • 0% intro APR 12 months
  • Pairs with Amex Gold/Plat for transfers
  • Free checked bag
  • 2 United Club passes/year
  • Priority boarding
  • 25% back on inflight purchases
Read the full review
Blue Business Plus from Amex
$0/yr · 15,000 Membership Rewards points
Read the full review
United Explorer Card
$150/yr · 50,000 miles + 10,000 AU bonus

Editorial take: Blue Business Plus from Amex

The silent workhorse of the Amex MR ecosystem. 2x on everything up to $50k/year with no annual fee. Pair it with the Platinum or Gold to unlock transfers, and you have a powerful everyday earner.

Editorial take: United Explorer Card

Solid for United flyers. The free checked bag and 2 United Club passes per year add up, and the 70k + 10k AU bonus is a great starting point for domestic award flights. $0 intro annual fee, then $150.

Common questions

Which card has the bigger sign-up bonus, Blue Business Plus from Amex or United Explorer Card?
The United Explorer Card has the bigger bonus, 50,000 miles + 10,000 AU bonus, worth roughly $1,040, versus 15,000 Membership Rewards points (~$270) on the Blue Business Plus from Amex.
Is the Blue Business Plus from Amex's $0 annual fee worth it compared to the United Explorer Card?
The Blue Business Plus from Amex has no annual fee, so the question is whether the United Explorer Card's $150 fee is justified by its perks. If you'll use enough of the United Explorer Card's benefits to clear $150 in value annually, it's worth it; otherwise stick with the Blue Business Plus from Amex.
Can I have both the Blue Business Plus from Amex and United Explorer Card?
Yes, since they're from different issuers (American Express and Chase) the application rules don't conflict. Many points enthusiasts hold both, they pair well when one earns flexible bank points and the other earns a different currency.
Should I get the Blue Business Plus from Amex or the United Explorer Card first?
Get the one whose sign-up bonus you can hit comfortably without overspending. Blue Business Plus from Amex: $3,000 spend in 3 months. United Explorer Card: $3,000 in 3 months. Pick the easier minimum spend if you're new to points; pick the larger bonus if you have planned big purchases coming up.

Card details on this page reflect the most recent data we've verified against the issuer's own site. Sign-up bonuses and fees can change at any time, confirm the current offer on the issuer's page before applying.