Yes, you can use United MileagePlus miles to upgrade to first class on select routes, starting at 17,500 miles plus a $75 co-pay one-way.
Where do United Miles work for first class upgrades?
United’s MileagePlus program lets members upgrade from economy to first class on most domestic and international routes where first class cabins exist. That includes popular transcontinental flights like New York (JFK) to Los Angeles (LAX) and long-haul international routes such as Newark (EWR) to London (LHR).
What are the exact mileage requirements and co-pays?
| Upgrade Type |
Miles Required (one-way) |
Co-pay |
Eligibility |
| Economy to First |
17,500 |
$75 |
Upgradable fare classes |
| Economy to Business (Basic Economy excluded) |
15,000 |
$75 |
Select fare classes |
| Complimentary Upgrade (Status) |
0 miles |
$0 |
United Silver/Gold/Platinum/1K members |
Mileage costs vary by distance. Short flights under 700 miles often need fewer miles, while long-haul international trips over 3,000 miles usually hit the full 17,500-mile mark plus the co-pay. Upgrades aren’t guaranteed—they depend on seat availability and your frequent flyer status.
Why does United offer mileage upgrades instead of just elite status?
United’s MileagePlus program started in 1981 and quickly became one of the first major airline loyalty programs in the U.S. Over the years, they’ve tweaked the upgrade system to reward loyal customers while still making money. Elite status gives you priority, but mileage upgrades let occasional flyers buy their way up—if seats are available. Just don’t expect upgrades to be handed out like candy. United’s rules are clear: you can’t just buy upgrades outside the MileagePlus system (United, 2026).
How do I actually request a mileage upgrade?
First, book an upgradable economy ticket directly through United or a partner airline. You can ask for an upgrade when you book, during check-in, or at the gate—but the easiest way is through the United app or website. Once you’ve made the request, you can track your upgrade status in real time through your MileagePlus account. As of 2026, United processes upgrades in this order: Global Services, Premier 1K, Premier Platinum, Premier Gold, Premier Silver, then everyone else based on fare class (United, 2026).
Give yourself at least 24 hours before your flight to request an upgrade and make sure you’ve got the miles plus the co-pay ready. Once confirmed, upgrades are final—no take-backs. For international flights, try to request the upgrade at least 72 hours early. Elite members also have the option to use “PlusPoints” instead of miles on certain fares.
(Pro tip: Mileage rates and co-pays change all the time. Always double-check united.com or the United app before you book (United, 2026).)
Edited and fact-checked by the MeridianFacts editorial team.
