Bus 583 via MarstaorPrivate transfer to Uppsala?

The short answer

These do not go to the same place, so price is not the comparison. The Bus 583 via Marsta reaches Stockholm City and the central station above it; the Private transfer to Uppsala does not. This goes to Uppsala, not Stockholm: the driver takes you to any address there.

The Private transfer to Uppsala is quicker: 30 min against 1 h 01.

Bus 583 via Marsta: hours not recorded. Private transfer to Uppsala: Runs all night.

Priced against each other

Whole-party totals · adult fares

What each costs for the whole party, in SEK. The cheaper of the two is marked on every row. The Private transfer to Uppsala is charged in euros; its column is converted at the reference rate in its fare note.
Travelers	Bus 583 via Marsta	Private transfer to Uppsala	Difference
1	SEK 43	about SEK 947	SEK 904
2	SEK 86	about SEK 947	SEK 861
3	SEK 129	about SEK 947	SEK 818
4	SEK 172	about SEK 947	SEK 775
5	SEK 215	about SEK 1,285	SEK 1,070
6	SEK 258	about SEK 1,285	SEK 1,027
7	SEK 301	about SEK 1,285	SEK 984
8	SEK 344	about SEK 2,570	SEK 2,226

Side by side

Where each one leaves you

58341 · SLBus 583 via Marsta

From: Sky City, between Terminals 4 and 5 — the same building as the station
To: Stockholm City, changing to the commuter train at Marsta
Luggage: A city bus and a commuter train. There are no racks and you keep your bags with you.
Journey: 61 min

This is the whole point of the page: SEK 43 against SEK 200 for the same journey with the same operator, because it starts at a bus stop rather than a ticket gate.

It takes 61 minutes against the direct train's 38, and it needs one change at Marsta. That is what the 157 kronor buys.

Bus 583 runs from Terminals 2 and 3 as well as Sky City, roughly every 15 minutes.

SL tickets are not valid on Arlanda Express, on SJ trains through Arlanda, or on Flygbussarna.

Bus 583 via Marsta: price for every party size

Read SL on traveling to and from Arlanda

transfer · KiwitaxiPrivate transfer to Uppsala

From: Driver meets you in arrivals with a name board
To: Any address in Uppsala
Runs: All night
Journey: 30 min

Book at least 16 hours ahead; nearer the day a car is offered only when one is free.

Private transfer to Uppsala: price for every party size

Book transfer through Kiwitaxi

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This compares two of 11 options. See all of them ranked for your party size

Bus 583 via MarstaorPrivate transfer to Uppsala?

Priced against each other

Side by side

The other comparisons at Arlanda