When is OSL lounge at Gardermoen Airport full/unavailable for paid-access passengers?

OSL Lounge [1,2] is the only one of the four lounges in Oslo (Gardermoen) Airport which allows passengers from non-member airlines (or any Norwegian Airlines passengers below Premium Flex) paid access for NOK350(/€35/US$40) from 3 hours before departure. (FYI: a) It is not a member of PremiumPass b) It is the only non-SAS lounge, and SAS lounges don't do paid-access to the general public c) (I had never heard of DragonPass but OSL Lounge is apparently available for US$50 on it [3]), but I only found out a month later).

At least so OSL Lounge says. However when I tried to pay to get into it recently (Wednesday July 3, 2019) they told me they were full that entire day so I couldn't. Not even "come back and try later". There was no sign reflecting that, and nothing on their website either. I asked them what days and times they tended to be unavailable, and they couldn't tell me, and didn't seem in the least bothered by that. (Yay, 8hr stopovers).

My question is: what days/times/months is OSL Lounge full/unavailable to paid-access passengers?

airports lounges

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When is OSL lounge at Gardermoen Airport full/unavailable for paid-access passengers? - Grayscale Photography of People Walking on Concrete Pavement Hallway

When is OSL lounge at Gardermoen Airport full/unavailable for paid-access passengers? - Pensive female designer in checkered jacket waiting for flight near departure board looking away in modern airport in evening

When is OSL lounge at Gardermoen Airport full/unavailable for paid-access passengers? - Back view of female employee in trendy jacket waiting for train departure and leaning on backs of wooden seats in train station

How long before my flight can I access lounge?

If you have luggage that needs to be checked in, you're bound by the airline's policy about when exactly you can check those in. Often, that's around 4 hours before a flight.

Can you pay to access airport lounges?

Most airport lounges now offer pay-per-use entry to anyone, even if you aren't flying with that airline. Pay-per-use access generally costs between $25-$75 USD per visit.

How do I get unlimited lounge access?

List of Best Credit Cards With Airport Lounge Access Feature

HDFC Visa Signature Credit Card.

HDFC Bank Diners Club Black Credit Card.

Yatra SBI Credit Card.

SBI Advantage Platinum Credit Card.

SBI Platinum Corporate Card.

Axis Bank Miles & More World Credit Card.

Axis Bank Privilege Credit Card.

Who can access lounge in airport?

1. Try Pay-per-Use Lounges. Say hello to independent lounges that can be accessed by any traveller, regardless of airline or flight class.

Airport Lounge Access! 4 Ways to get in.

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Oleksandr Pidvalnyi, Aldo Garza, Gustavo Fring, Gustavo Fring