Free admission at Madrid's Museo Nacional del Prado cannot be booked online. The museum gives away the last two hours before closing every single day it opens, but those tickets are handed out at the ticket office and stop when the building reaches capacity, so the free slot you planned is a queue rather than a reservation. The Museo Reina Sofía does the opposite: its free evening still requires a ticket, and that ticket is bookable online in advance. The Museo Nacional Thyssen-Bornemisza asks for no ticket at all during its free windows. Three national museums on the same avenue, three different procedures. The warning that applies to all of them is the same one: free entry never covers the whole building, and at two of the three it does not cover the temporary exhibition you may have come for.
The three free windows compared
Madrid's Prado, Reina Sofía and Thyssen publish three different free-admission windows on their own timetable pages, and no two of them behave the same way. The table below compares when each museum is free and what that free entry actually admits you to.
| Museum | Free window | What it admits you to |
|---|---|---|
| Museo Nacional del Prado | Last two hours before closing, every opening day | The Collection; temporary exhibitions at 50% off |
| Museo Reina Sofía | 19:00-21:00 Mon and Wed-Sat; 12:30-14:30 Sun | The Collection and temporary exhibitions |
| Museo Thyssen-Bornemisza | 12:00-16:00 Mon; 21:00-23:00 Sat | Mon: the Collection. Sat: temporary exhibitions only |
The Prado's window is stated as a rule rather than a clock time, which is why it moves. The museum opens Monday to Saturday 10:00-20:00 and on Sundays and public holidays 10:00-19:00, so the free two hours fall at 18:00-20:00 on a normal weekday and at 17:00-19:00 on a Sunday or a holiday (Museo Nacional del Prado, opening times and prices, checked 15 September 2026). On 6 January, 24 December and 31 December the museum opens only 10:00-14:00, which pushes the free window to 12:00-14:00 on those three dates.
Getting into the Prado for free
The Museo Nacional del Prado grants free access to its Collection in the final two hours before closing, and it does not sell or reserve that access online. The museum's own pricing page states that free-hours tickets are available at the ticket office, subject to capacity ("Entradas disponibles en taquilla hasta completar aforo"), and pairs the free Collection entry with a 50% reduction on temporary exhibition tickets rather than including them (Museo Nacional del Prado, Horarios y precios, checked 15 September 2026).
Two conditions decide whether you get in. The first is capacity: the free tickets stop when the museum is full, and there is no published number to plan against. The second is the last-admission rule — the Prado states access up to 30 minutes before closing time, so on a normal weekday the real deadline to be through the door is 19:30, not 20:00, and a free window advertised as two hours is closer to ninety usable minutes.
That same ticket-office rule governs the other kind of free entry at the Prado, the one based on who you are rather than what time it is. Under-18s, students aged 18 to 25, holders of a disability certificate of 33% or above, unemployed people, large families and several other categories enter free, and the museum's English page is explicit that free and reduced admission require accreditation, official and valid, at the ticket office on the day. General admission otherwise costs EUR 15, with a reduced rate of EUR 7.50.
The Reina Sofía still needs a ticket
The Museo Reina Sofía requires a ticket during its free hours, and unlike the Prado it lets you book that ticket online before you arrive. The museum states this in one line on its opening times page: "During free opening times you will still need a ticket, which can be booked online" (Museo Reina Sofía, Opening times, checked 15 September 2026). The same page prices general admission at EUR 12, covering the Collection and temporary exhibitions.
The schedule has a shape worth memorising because it is not symmetrical. The museum opens 10:00-21:00 on Monday and Wednesday to Saturday, with free admission from 19:00; on Sunday it opens 10:00-14:30 with free admission from 12:30; and on Tuesday it does not open at all. Free-hours visits are restricted to individuals rather than groups, and tickets during the free window carry no assigned time slot, while every paid ticket between 10:00 and the start of free access does.
Two parts of the Reina Sofía sit outside this system entirely. Admission to the Palacio de Velázquez and the Palacio de Cristal, the museum's exhibition halls inside Retiro Park, is free, on separate hours of 10:00-21:00 from April to September and 10:00-18:00 from October to March; the museum notes that the Palacio de Cristal is temporarily closed for restoration and that it also shuts on rainy days and during heatwaves.
The Thyssen's two free windows
The Museo Nacional Thyssen-Bornemisza runs two free windows that let you into two different parts of the building, and neither of them involves a ticket. On Mondays admission is free from 12:00 to 16:00 and covers the Collection; on Saturdays it is free from 21:00 to 23:00 and covers the temporary exhibitions on the ground floor and level -1. The museum's FAQ answers the question directly: "No ticket is required during these times" (Museo Nacional Thyssen-Bornemisza, Opening hours and prices, checked 15 September 2026).
The Monday window is the whole of Monday. The Thyssen opens only 12:00 to 16:00 on Mondays, in winter and summer alike, which means that the museum is never open on a Monday on a paying basis — the free hours and the opening hours are the same four hours. Tuesday to Friday it opens 10:00-19:00 from 1 September to 30 June and 10:00-21:00 from 1 July to 31 August, Saturday 10:00-23:00 year-round, and Sunday 10:00-19:00.
The Thyssen's ticket office keeps shorter hours than the museum, which matters if you intend to claim a free category in person: Tuesday to Sunday 10:00-18:30, and Saturdays 10:00-20:30. Under-18s, unemployed visitors, holders of a disability certificate of 33% or above and Friends of the Museum enter free at any time.
What free entry does not cover
Free entry at these three museums stops short of the temporary exhibition in two cases out of three, and that is the most common disappointment. At the Prado, the free two hours admit you to the Collection and give you 50% off a temporary exhibition ticket, not the exhibition itself. At the Thyssen, the Monday window is the Collection and the Saturday-night window is the temporary exhibitions — you cannot use either to see the other. Only the Reina Sofía's free slot covers both, because its EUR 12 general ticket covers both.
Nor does free entry have anything to do with the combined pass, which people conflate constantly. The Paseo del Arte card costs EUR 32.80, gives a 20% discount on the three standard admissions, and is valid for one visit to each museum within one year of purchase; the Thyssen's page for it describes coverage as the permanent collections of all three plus selected temporary exhibitions at the Reina Sofía and the Prado (Museo Nacional Thyssen-Bornemisza, Paseo del Arte card, checked 15 September 2026). Buying it and then turning up in a free window wastes one of its three visits.
There is also no city-wide free evening in Madrid, and no shared booking system. Each museum runs its own ticketing platform, its own capacity rules and its own calendar of closures, and a ticket or a queue position at one has no standing at the other two.
Doing all three on a Monday
Monday is the one day of the week when the three free windows can be strung together, because the Thyssen's free hours sit in the early afternoon and the other two museums open theirs in the evening. The Thyssen is free 12:00-16:00, the Prado is free 18:00-20:00 on a normal Monday, and the Reina Sofía is free 19:00-21:00 — three windows that touch at the edges rather than collide. All three sit on or immediately off the Paseo del Prado, with the Reina Sofía at Calle Santa Isabel 52 at the southern end.
The sequencing has to respect the last-admission rules rather than the closing times. Entering the Prado at 18:00 and leaving by about 19:15 gives you time to reach the Reina Sofía before its 20:30 cut-off, since last admission there is 30 minutes before the 21:00 close. Attempting it in the other order does not work: the Reina Sofía's free hours do not start until the Prado's are almost over.
Any other day of the week breaks the chain. Tuesday to Friday the Thyssen has no free window at all, Saturday's Thyssen slot at 21:00-23:00 starts after the other two have closed, and Sunday compresses the Reina Sofía's free time into 12:30-14:30 while the Prado's falls at 17:00-19:00.
Before you join the free queue
Check the museum's own timetable page on the morning of your visit rather than relying on any schedule printed in advance, including this one. All three museums set their hours by season and by the Madrid holiday calendar, and the Reina Sofía flags that two of its closure dates, 15 May and 9 November, may move with the Community of Madrid's business calendar.
Then make three decisions before you leave your accommodation. Decide whether the temporary exhibition matters to you, because if it does, the free window at the Prado and the Monday window at the Thyssen are the wrong tool and a paid ticket is the honest answer. Decide whether you qualify for a free or reduced category, and if so carry the original document, since the Prado and the Reina Sofía both issue those tickets only at the ticket office. And book the Reina Sofía's free ticket online the day before, because it is the one free entry in Madrid that you can actually hold in advance.