UpFront Plus is Frontier’s most premium seating option on their Airbus A321 at the moment. As the name implies, the seats are located at the very front of the aircraft. Other benefits include extra legroom and a blocked middle seat.
You won’t get any free drink drinks or snacks however. And the seats themselves look and feel like the basic economy seats.
But at least it’s cheap, right?
F92817
Denver, CO (DEN) – San Diego, CA (SAN)
Thursday, February 5, 2026
Aircraft: A321
Registration: N716FR
Duration: 1 hours 49 minutes
Seat: 2F (UpFront Plus)
Checking in at DEN
Flying from Denver to San Diego takes just a little over two hours. Spoiler alert: Even when flying in UpFront Plus on the A321, that’s about as far as much as I can handle. Them seats are hard.
The scheduled departure time for my flight to San Diego was 9:10 AM. I arrived at Terminal A at approximately 7 AM and made a beeline straight towards my gate. As I quickly learned, that’s a big no-no when flying Frontier out of Denver. Their gate space (much like the interiors of their aircraft) leaves a lot to be desired.
The boarding process
Boarding began at exactly 8:25 AM. They made multiple announcements that the flight was going to be completely full, which made me especially thankful for knowing that I was going to have an empty seat next to me no matter what. That’s the biggest advantage of springing for UpFront Plus IMHO.
Frontier Airlines A321 UpFront Plus seats
There are 8 UpFront Plus seats on the Frontier A321. They are located at the very front of the aircraft (rows 1 and 2). They look exactly the same as the regular economy class seats. And yeah. It’s no surprise that this is identical to what you saw in my Frontier A320neo UpFront Plus review.
The Airbus A321 is a large aircraft. Why Frontier decided to limit UpFront Plus to only rows 1 and 2 only is beyond me. I’d love to know their reasoning for having only 8 premium seats available on an aircraft of this size.
Departing Denver
We pushed off the gate 12 minutes early at 8:58 AM. That’s a pretty big deal considering that every seat on this aircraft was occupied. Except the middle seats in UpFront Plus of course.
It was an 11 minute taxi over to runway 25L, and we were in the air 11 minutes early at 9:09 AM.
Food and drinks
Unlike nearly other US airline at the time of this writing, Frontier doesn’t offer free snack snacks and drinks to its most premium passengers. Even if you’re seated In Upfront Plus, you’re going to have to pay for anything you want off of the Fly Bar menu.
The Fly Bar menu contains a respectable amount of snacks and drinks for an ultra low-cost carrier. There are 4 beers, 3 wines, 6 spirits, 2 cocktails, 14 nonalcoholic drinks, and 14 snack items. They also offer bundles, which is a good way of getting some of this stuff at a discount.
Frontier A321 UpFront Plus cabin comfort
As much as I enjoyed the blocked middle seat and the extra legroom, it’s hard for me to recommend UpFront Plus (or any other seat on Frontier) on any flight longer than three hours. These seats are far too firm to be considered even remotely comfortable. It’s borderline inhumane IMHO, and hardly any better than Frontier A321 regular economy.
The descent and arrival into San Diego
My butt bones were a achin’, but boy was the scenery ever amazing the farther we pushed west.
It was a completely uneventful (but typically scenic) approach into San Diego. This has been my home airport for almost 30 years now, and I’m still not tired of the view.
We touched down on runway 27 a full 46 minutes early at 9:58 AM. I don’t believe I’ve ever arrived into San Diego that far ahead of schedule when flying from Denver (on any airline), so this was definitely a notable (and nerdy) moment for this AvGeek.
It was just a five minute taxi over to gate 119 in Terminal 1, and I was off the aircraft just a few minutes later. Lickety split deplaning is one of my favorite advantages of sitting at the very front of the aircraft!
Frontier Airlines A321 UpFront Plus is one of the best kept secrets in commercial aviation IMHO. It’s not all that luxurious, but it is spacious. And cheap. Two of my favorite things when it comes to air travel.
The biggest downside, of course, is how hard the seats are. If you can withstand the pain, you’re probably going to enjoy this.
