United MileagePlus Review 2026
United Airlines' loyalty program lets you purchase MileagePlus miles to top up your account for award flights. With regular bonus promotions, extensive Star Alliance redemption options, and a user-friendly buying platform — is it a smart way to book premium travel? Let's crunch the numbers.
Bonus promotions available year-round
Quick Facts
Worth It with Promotions
Consumer verified
Pros
- Frequent bonus promotions — get up to 100% extra miles, dropping effective cost to ~1.75¢ each
- Instant delivery to your MileagePlus account — miles post within minutes
- Excellent Star Alliance redemption options (ANA, Lufthansa, Singapore Airlines, etc.)
- No blackout dates on United-operated flights — saver award space can be a steal
- Clean, simple purchase interface — buy in minutes with multiple payment options
Cons
- Standard rate (~3.5¢/mile) is poor value — only buy during bonus promotions
- Annual 200,000-mile cap limits large-scale mileage accumulation
- Miles don't earn interest — hoarding long-term loses value to devaluation risk
- Award availability on partner airlines can be inconsistent and hard to find
United MileagePlus Buy Miles In-Depth Review (2026)
United MileagePlus is one of the oldest and largest airline loyalty programs in the world, serving over 100 million members. While you can earn miles through flights, co-branded credit cards, and shopping portals, the Buy Miles platform (buymiles.mileageplus.com) is United's official channel for purchasing miles directly — whether you need a few thousand to top up for a dream award ticket or want to stockpile for future travel.
The value proposition is straightforward but timing-dependent. At the standard rate of ~3.5 cents per mile, buying miles rarely makes financial sense — you'd be better off purchasing a revenue ticket outright. But United runs frequent bonus promotions (often +70% to +100%), dropping the effective cost to around 1.5–2 cents per mile. At that price point, miles become a powerful tool for booking premium cabins (business/first class on United or Star Alliance partners like ANA and Lufthansa), where the cents-per-mile redemption value can exceed 5–8 cents — a compelling arbitrage.
The purchase experience itself is seamless: log in, select the number of miles (1,000 to 200,000 per year including bonuses), pay by credit card, and miles post instantly. However, there are strategic nuances — you should always have a specific redemption in mind before buying. Award space fluctuates, and holding miles for too long exposes you to program devaluations. Used wisely (targeted top-ups during bonus windows for confirmed premium awards), MileagePlus Buy Miles is one of the best mileage-purchase programs among US carriers.
⭐ Rating Breakdown
Real Customer Reviews
Buy Miles Now"Bought 88,000 miles during a 100% bonus promo for $1,540. Booked a round-trip business class to Tokyo on ANA that would've cost $6,000+. Best deal ever."
— Michael T.
"Topped up 12,000 miles to book a last-minute domestic saver award. Saved $400 vs. the cash price. Just wish bonus promos were more predictable."
— Rachel G.
"The process is instant — miles were in my account before I even finished reading the confirmation email. Used them same day for a Europe upgrade."
— David L.
Smart Strategies for Buying Miles
View current offers →Frequently Asked Questions
Is buying United miles worth it?
It depends on the promotion. At the standard rate (~3.5¢/mile), it's rarely worth it. But during 70-100% bonus promotions, effective cost drops to ~1.5–2¢/mile — excellent value for premium cabin redemptions where you can get 5¢+ per mile in value.
How many miles can I buy per year?
United allows you to purchase up to 200,000 miles per calendar year, including bonus miles. This cap resets annually and applies per MileagePlus account.
Do purchased miles count toward Premier status?
No — purchased miles are award miles, not Premier Qualifying Points (PQP). They won't help you earn elite status, but they can help you redeem for flights you might otherwise pay cash for.
How fast do purchased miles post to my account?
In most cases, purchased miles post instantly or within a few minutes. You can use them immediately for award bookings once they appear in your MileagePlus account.
Can I buy miles as a gift for someone else?
Yes! United allows you to purchase miles for another MileagePlus member. This can be a thoughtful gift for frequent travelers or a way to help family pool miles for a shared trip.
Our Final Verdict: Recommended (With Promotions)
Buying United miles is a smart move — but only during bonus promotions and for specific premium-cabin redemptions. Buy strategically, redeem wisely, and MileagePlus can unlock extraordinary travel value.