The United Explorer card is currently offering up to 65,000 miles - but only for one more week

• The United Explorer Card is currently offering new cardholders up to 65,000 United miles.
• You'll earn 40,000 miles after you spend $2,000 in the first three months, and another 25,000 miles after you spend $10,000 total in the first six months from account opening.
• This is a limited-time offer, and the end date is approaching: January 22, 2020.
• The Explorer card includes some useful benefits for United flyers, including a free checked bag and the most access to the lowest-priced award flights.
• The card has a $95 annual fee, and it's waived for the first year.
• See Business Insider's list of the best airline credit cards »

The United Explorer card is a great option for United flyers even with its standard sign-up bonus of 40,000 miles, but it's currently even more appealing thanks to a limited-time offer.

If you apply for the card now, you can earn up to 65,000 United miles - 40,000 after you spend $2,000 in the first three months, and another 25,000 miles after you spend $10,000 total in the first six months.

However, this offer is only available until January 22, so your time to apply is running out.

Keep in mind that we're focusing on the rewards and perks that make these credit cards great options, not things like interest rates and late fees, which will far outweigh the value of any points or miles. It's important to practice financial discipline when using credit cards by paying your balances in full each month, making payments on time, and only spending what you can afford to pay back.

The miles you can earn with this sign-up offer could help you book an award flight on United or one of its partners in the Star Alliance, such as Air Canada or Lufthansa. United recently switched to a new, "dynamic" system for pricing its flights booked on miles - so there's no longer an award chart to reference to see exactly how many miles you'll need to get to a given destination. For reference, a round-trip economy award flight within the US requires at least 25,000 miles.

Travel website The Points Guy values United miles at 1.3 cents apiece, so 65,000 miles would be worth about $845. This valuation takes into account your various options for using these miles, from economy-class flights on United to business- and first-class flights booked on international partners like ANA and Lufthansa.

Read more: United Explorer card review

To earn the full 65,000 miles, you'll need to spend at least $10,000 in the first six months from your account-opening date. That averages out to $1,666 spent per month. If that's more money than you'd typically spend in that time period, keep in mind that tax season is approaching - it could be worth paying your federal return with the Explorer card if you're working toward its bonus. For other ideas, see our guide to meeting a minimum spending requirement for credit card welcome bonuses.

Other reasons to consider the United Explorer card

Beyond the welcome bonus, the United Explorer card is worth a look thanks to the following benefits:

• 2x miles on United purchases, and on purchases at restaurants and hotels
• Expanded access to United's saver-level awards
• 2 one-time United Club airport lounge passes each year
• Up to a $100 credit to cover the application fee for Global Entry or TSA PreCheck
• A free checked bag on United flights when you pay with your card
• 25% back on in-flight purchases
• No foreign transaction fees

Read more: If you have the United Explorer card, here are 6 perks you should be taking advantage of right now

The card has a $95 annual fee that's waived the first year. If you're a frequent United flyer, the benefits like a free checked bag and United Club passes can make it worth it.

If you're interested, don't forget that the card's offer end date is fast approaching. Apply by January 22 to earn up to 65,000 United miles.

Earn up to 65,000 miles: Click here to learn more about the United Explorer card »

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Please note: While the offers mentioned above are accurate at the time of publication, they're subject to change at any time and may have changed, or may no longer be available.