[Expired] Save 10% on Domestic Round-Trip Flights With United’s Text-to-Claim Flash Sale [Book by October 31]

Updated: November 1, 2025, 2:10am CDT

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United’s “Trick or Treat” Text Flash Sale
Final Thoughts

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Update:

The offer mentioned below has expired and is no longer available.

United Airlines is rolling out a limited-time Halloween flash sale — and this one’s as simple as sending a text. Travelers who text United can score 10% off their next domestic round-trip flight, as long as they book by October 31.

Let’s take a look at all there is to know!

United’s “Trick or Treat” Text Flash Sale

United Airlines just dropped a quick (and clever) Halloween flash sale — and all it takes is a text message to save. Through 11:59 p.m. CT on October 31, 2025, travelers can score 10% off standard economy round-trip fares on select domestic United and United Express flights.

To claim the offer, simply text “TrickorTreat” to 71529 and opt in for United’s SMS updates. Once you do, you’ll receive a unique discount code good for your next domestic booking. (If you’re already enrolled in United text alerts, just send the message and the code will be sent automatically.)

United Flash Sale Text Screen — Text **TrickorTreat** to **71529**, and United will reply with your promo code for 10% off your next round-trip flight. Image Credit: Juan Ruiz

You can use the 10% discount on round-trip itineraries departing between November 10, 2025, and March 9, 2026 (all travel must be completed by March 9, 2026). The offer is valid for the first 1,000 redemptions only, so you’ll want to move quickly if you plan to book.

There are a few other terms and conditions to be aware of before you rush to book your flights:

Booking window: Through 11:59 p.m. CT on October 31, 2025
Blackout dates: November 20–December 2, 2025, and December 17, 2025–January 6, 2026
Eligible fares: Applies to United Economy tickets only (Basic Economy excluded)
Discount: 10% off the base fare (before taxes and fees) on qualifying round-trip itineraries
Eligible flights: Must be operated by United or United Express (not valid on codeshares or Star Alliance partners)

Since this flash sale only applies to cash bookings, you won’t be redeeming United MileagePlus miles this time. However, it’s still a great opportunity to earn extra rewards by paying with a United co-branded credit card or a card that offers bonus points on airfare purchases. That way, you’ll not only save 10% upfront but also rack up valuable points or miles toward your next trip.

Hot Tip:

This deal won’t last long — it’s only valid for the first 1,000 redemptions. If you already have travel plans (or even a potential trip in mind), don’t wait. Text TrickorTreat to 71529 and lock in your 10% savings on a round-trip United flight before the codes run out.

Final Thoughts

This is a fun, limited-time flash sale from United that first popped up on the airline’s Instagram — and it’s an easy way to save 10% on your next United round-trip flight. All it takes is a quick text to claim your code, but don’t wait too long — it’s only valid for the first 1,000 bookings, and those will likely disappear fast.