Your vehicle should have come with a compressor with the 'fix a flat' goo. It is behind the panel at the left rear of the vehicle.

If you want ideas for spare tires, just do a forum search for "spare tire". You will find different ideas presented.

 

Someone is selling the compact spare kit in the classifieds if you are interested. This is a great price on the discontinued item IMO...

2017-2023 Chrysler PACIFICA 17" Compact Spare Rim...

2017-2023 Chrysler PACIFICA 17" Compact Spare Rim Wheel Tire Jack set. Will work with all tire sizes. This is the inflatable spare that fits in the factory spare tire spot (if you have the vacuum, you did not get a spare, so this fits under the floor of the 2nd row. Included the brand new...

www.pacificaforums.com

 

THAT

is a deal worth jumping on, there! If only I was closer, it'd be mine!

 

We have a 2017 (ICE) Limited that came with a vacuum cleaner we have never even turned on to try. We purchased the Spare Tire Kit for about $300 immediately after driving it off the Dealer lot. Now after about 55,000 miles we have yet to need the Spare and yet have been loosing the Stow-N-Go well behind the driver’s seat all these years. Looking back the $300 and loss of a very useful feature doesn’t seem like a great trade off. Yes, we could have been stuck somewhere waiting for a remedy but we could have also had to pull this 50 mile small tire out of the Stow-N-Go well and struggled to temporarily replace the flat only to need to buy a new tire anyway. Just take a chance and enjoy your Pacifica!

 

I think that is the correct answer. All new car models are heading this direction AFAIK. Even if the fuel hit is insignificant, but considering you are lugging around some weight endlessly, and that hundreds of millions of people are doing it everyday and that should have some effect on the planet,..... right?
Think about the last time you had to use a spare tire.... if ever. That'll give you the answer.
If you live in an area where roads are that poor and tire blowouts are fairly common, and recovery services / cellphone service, etc are spotty, then fair enough, lug around a spare for your peace of mind. That is not the case for the majority of population that live in cities or suburbs in USA. The most I'll carry would be the air compressor / fix-a-glue which came with the car and is fairly lightweight & compact. It fits inside its own compartment and doesn't encroach on the passenger / cargo space. My car came with the vacuum cleaner which I used extensively for the last several years, but it seems to have lost it's charm (suction), and the dealership can't find anything wrong with it. So I don't use much of it nowadays and use my trustworthy Dyson in the garage which "sucks" like a true pro.

To the OP, the Pacifica is a great car as it is and the lack of a spare wouldn't or shouldn't bother you one bit in my opinion. But if you do feel the need for it, you may use that link provided earlier for previous post. $300 is a great price for it and IIRC that was the price it was selling for from dealerships when I bought my car. Many times I considered buying it but always left out and don't regret it at all.

 

Most of us are in the same situation. I have the compressor and goo with our '17, and in my opinion it's close to worthless. (Plus, the goo wrecks the pressure sensor, which adds about another $50 to the bill.) We had one near miss with a punctured tire due to a trip to the dump. Thankfully I was anticipating a new set of tires at the dealer the next day, inflated it to about 40 lbs., and limped in. Other than that, we've put more than 30K on it over 3 years and never had a problem. You have to be pretty unlucky to wreck a modern steel radial. Would I feel better with a real spare? Sure, but I'd never hear the end of grief about the loss of Stow and Go from the fetching Mrs. G. Roadside assistance coverage can ease the angst, too.