Does any fast food serve breakfast 24 hours?

Yes, but not at McDonald's. Jack in the Box serves its full menu, breakfast included, all day, and diner chains like Denny's and IHOP serve breakfast late at night at locations that stay open 24 hours.

McDonald's added all day breakfast in October 2015 and dropped it in 2020 to simplify its kitchens during the pandemic. It hasn't come back in the US as of October 2026, so McDonald's breakfast is a morning menu again.

Your best options:

• Jack in the Box. Its location pages say it serves its full menu, including breakfast, all day every day. The catch is hours: the lobby and the drive-thru can close at different times.
• Denny's. Location pages advertise round-the-clock breakfast and say the chain is open 365 days a year. Not every Denny's is open all night, so check the one near you.
• IHOP. IHOP says its menu is ready any time of day. Some IHOPs are open 24 hours, and others close at night.
• Waffle House. Its more than 1,900 restaurants are open 24/7, 365 days a year.

Hours vary by location at every one of these chains, and the drive-thru or takeout window can keep different hours from the dining room. Calling ahead is the surest check at 3 AM.

Late Night Food Spots shows when each listed kitchen stops cooking, not just when the doors lock.