Here we will regularly report on the punctuality of the regional train services. We report on a monthly basis about the punctuality of the Mälartåg lines.
Here we will regularly report on the punctuality of the regional train services. We report on a monthly basis about the punctuality of the Mälartåg lines.
In the table below, you can see the punctuality for each line as well as the average performance month by month.
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Örebro-Eskilstuna-Sthlm-Uppsala
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Linköping-Eskilstuna-Västerås-Sala-Uppsala
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Hallsberg-Katrineholm-Stockholm
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Norrköping-Nyköping-Stockholm
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Uppsala-Tierp-Gävle
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Total punctuality
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| January | 79% | 84% | 84% | 77% | 82% | 81% |
| February | 81% | 89% | 87% | 79% | 86% | 85% |
| Mars | 85% | 91% | 89% | 83% | 91% | 89% |
| April | 87% | 84% | 87% | 81% | 88% | 86% |
| May | 87% | 80% | 85% | 80% | 95% | 88% |
| June | 82% | 68% | 85% | 80% | 95% | 84% |
| July | 78% | 88% | 75% | 68% | 94% | 84% |
| August | 87% | 93% | 83% | 76% | 93% | 89% |
| September | 86% | 86% | 82% | 73% | 95% | 88% |
| October | 85% | 89% | 84% | 72% | 94% | 87% |
| November | 86% | 87% | 84% | 74% | 95% | 88% |
| December | 90% | 92% | 90% | 88% | 96% | 92% |
| Totalt 2025 | 85% | 86% | 85% | 77% | 92% | 87% |
Overall punctuality for 2025 was 87%, an increase of one percentage point compared with 2024. The lowest punctuality was recorded in January, when several external factors negatively affected operations, including trees on the tracks, wildlife collisions, and infrastructure failures. During the other months, punctuality varied between 84% and 92%.
During the autumn, speed restrictions linked to track works and the construction of the new railway Ostlänken caused many delays on the Norrköping–Nyköping–Stockholm line, as they had not been incorporated into the timetable. At the same time as the new 2026 timetable came into effect in December 2025, travel times on the line were adjusted, which significantly improved punctuality during the last month of the year.
December was the most punctual month of the year, with 92 percent on-time performance—an increase of 4 percentage points compared with the same period in 2024. All lines except one achieved punctuality of 90 percent or higher.
The speed restrictions on the Norrköping–Nyköping–Stockholm line that caused many delays during the autumn have now been incorporated into the timetable through longer scheduled journey times as of mid-December. This led to a significant improvement in punctuality on this line during December.
Some of the more major delays were caused by the evacuation of a train in Södertälje, which resulted in extensive knock-on delays, a signalling system failure in Eskilstuna, and several incidents involving unauthorized persons on the tracks.
88 percent of our trains were on time in November, an increase of four percentage points compared with the same period last year. The Uppsala–Gävle line had the highest punctuality (95 percent) and also very few trains were cancelled—only 1 percent. The Norrköping–Nyköping–Stockholm line still had the lowest punctuality, at 74 percent, due to speed restrictions at several locations.
Numerous incidents involving unauthorized persons on the tracks—mainly in Uppsala, Stockholm, Eskilstuna, and Knivsta—as well as electrical faults in Solna and signal system failures in Huddinge were other causes of major delays.
In October, 87 percent of the trains were on time. The main causes of delays during the month were an overhead line fault in Stockholm, which caused long delays and affected several of our trains to and from Stockholm, as well as a signal box failure between Eskilstuna and Strängnäs that persisted for an extended period. During the month, the number of incidents involving unauthorized persons on the tracks also increased, leading to traffic stoppages to inspect a section of the line, which caused long delays.
Punctuality reached 88 percent in September. As in recent months, traffic was negatively affected by several infrastructure failures in and around Stockholm. Accidents and long service disruptions due to unauthorized persons on the tracks also contributed to this month’s figures.
The Uppsala–Gävle line had the highest punctuality at 95 percent, while the Norrköping–Nyköping–Stockholm route continued to have the lowest. The low punctuality on this route is largely due to track work and speed restrictions that have not yet been fully incorporated into the timetable. We are making timetable adjustments in connection with the T26 schedule to improve the conditions for more trains on this route to run on time.
89 percent of trains were on time in August, an increase of five percentage points compared with July. The month was marked by several major signal failures at different locations in the Mälardalen region, which caused disruptions to services. Two incidents of overhead line damage also occurred during the month, leaving several routes without power for an extended period.
The number of trespassers on the tracks continued to rise, and in some cases train services had to be completely halted while the police inspected the track area.
The share of trains on time remained at the same level as in June, 84 percent. The severe storm that swept across Mälardalen at the beginning of July caused major disruptions to rail traffic. Several trees fell onto both tracks and overhead lines, which led to canceled departures and delays on several routes. During the month, several signal failures also occurred at different locations in Mälardalen. The reduced punctuality on the Stockholm–Nyköping–Norrköping and Hallsberg–Katrineholm–Stockholm lines was due to reduced speeds on the tracks as a result of construction work on the new Ostlänken railway.
84 percent of the trains were on time in June, a decrease of four percentage points compared to May. An unusually high proportion, 43 percent, of the additional delay minutes were caused by faults or disruptions in the infrastructure, including several cases of signal and switch failures. A prolonged and extended track maintenance project between Rekarne and Kolbäck led to major delays and canceled trains on several lines, most notably on the Linköping–Eskilstuna–Västerås–Sala–Uppsala route.
88 percent of Mälartåg departures were on time in May, an increase of two percentage points compared to April. The Uppsala–Gävle line recorded the highest punctuality, with 95 percent of trains running on schedule. At the same time, services were affected by an extended track maintenance project between Eskilstuna and Västerås, where trains were limited to a speed of 40 kilometres per hour. This caused delays on the Linköping–Eskilstuna–Västerås–Örebro line as well as on other routes. Infrastructure-related issues in the Stockholm area, including a signal failure south of Järna and a switch failure south of Stockholm, also contributed to delays.
Punctuality for April was 86 percent, 3 percentage points lower than in March. The biggest impact came from a number of infrastructure faults, which caused significant knock-on delays. At the beginning of the month, a switch malfunction south of Stockholm caused train congestion. During the Easter weekend, a signal failure north of Stockholm led to a traffic halt for several hours and subsequent delays. Numerous incidents involving unauthorized persons on the tracks led to service stoppages and reduced speeds. The Norrköping–Nyköping–Stockholm route has experienced unusually low punctuality in the early part of the year, partly due to speed restrictions that were removed at the end of April.
More Mälartåg trains are on time now than at the beginning of the year. In March, punctuality increased by 4 percentage points, reaching 89 percent. The winter has been mild, which has contributed to fewer weather-related causes of delays, and in March there were fewer infrastructure faults than during the first two months of the year. However, the number of incidents involving unauthorized persons on the tracks continued to rise in March, and some of these disturbances led to complete stoppages on the affected routes.
Punctuality in February was low, at 85%. During the last week, several incidents occurred that caused major disruptions. These persisted over the following days and were compounded by new faults. This led to many consequential delays throughout the entire system. A switch failure in Södertälje caused a complete halt in traffic. On the same day, several signal failures occurred both north and south of Stockholm. There has been an increase in unauthorized persons in the track area.
The year started with low punctuality, totaling 81 percent. The cold temperatures at the beginning of the month primarily affected the infrastructure, with many switches freezing and breaking in various parts of Mälardalen. The trains were also impacted. Power outages caused by fallen trees on the tracks affected several lines, along with an urgent speed restriction south of Stockholm that contributed to prolonged delays for several weeks.
There are many ways to calculate the punctuality of a train. Punctuality RT+5 is the punctuality measure that we use for Mälartåg. A train is considered punctual if it is on time with a margin of error of five minutes and 59 seconds. The punctuality statistics are based on measurements taken upon arrival at all intermediate stations, including the final destination. Canceled trains are not included in the statistics.
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Örebro-Eskilstuna-Sthlm-Uppsala
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Linköping-Eskilstuna-Västerås-Sala-Uppsala
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Hallsberg-Katrineholm-Stockholm | Norrköping-Nyköping-Stockholm | Uppsala-Tierp-Gävle | Total punktlighet | |
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| Januari | 64% | 74% | 79% | 78% | 83% | 76% |
| Februari | 80% | 91% | 89% | 90% | 94% | 89% |
| Mars | 84% | 87% | 91% | 89% | 95% | 90% |
| April | 84% | 85% | 88% | 88% | 94% | 89% |
| Maj | 79% | 83% | 87% | 87% | 94% | 87% |
| Juni | 80% | 86% | 90% | 89% | 92% | 87% |
| Juli | 82% | 88% | 91% | 90% | 93% | 88% |
| Augusti | 72% | 85% | 82% | 83% | 93% | 84% |
| September | 76% | 86% | 84% | 82% | 91% | 85% |
| Oktober | 80% | 86% | 88% | 82% | 90% | 86% |
| November | 81% | 85% | 82% | 84% | 85% | 84% |
| December | 85% | 89% | 90% | 90% | 89% | 88% |
| Totalt 2024 | 79% | 86% | 87% | 86% | 91% | 86% |
Total 2024: The puntcuality for 2024 was 86%. The year began with harsh winter weather, leading to a high number of cancelled departures, delays, and vehicle damage for both Mälartåg and other railway operators. During the autumn, service delivery improved, with stabilized punctuality and regularity, thanks in part to good availability of staff and vehicles. However, declining punctuality remains a challenge for railway traffic. Only just over 20 percent of the delays for Mälartåg traffic in 2024, measured in time/delay minutes, could be directly attributed to issues Mälartåg can influence. Most delays were caused by factors beyond Mälartåg’s direct control, primarily infrastructure failures, accidents, and track trespassing.
December 2024: 88 percent of trains were on time in December, an increase of 4 percentage points from November. Some of the disruptions that caused delays during the month included track work south of Knivsta in the second half of December, a downed overhead line near Norrköping, as well as power outages, multiple signal box failures around Stockholm, and a fire in Skutskär. The new 34 daily departures Stockholm-Uppsala from mid-December hade high punctuality, 95 procent.
November 2024: 84 percent of the trains were on time in November. The decreased punctuality can be attributed to the season's first winter storm. Snow and strong winds affected both vehicles and infrastructure in parts of the rail network. For instance, on the day the first snow fell, a car ended up on the tracks, halting traffic for several hours between Stockholm and Uppsala. November was also marked by numerous track and switch failures in the Stockholm area, causing long delays that had ripple effects in other parts of the system, as well as many incidents of unauthorized access to tracks at multiple locations.
October 2024: In October, 86 percent of trains were on time, an increase of one percentage point compared to September. The major delays during the month were caused by accidents on the railway. There were several incidents involving unauthorized persons in track areas and collisions, as well as weather-related accidents, including trees falling on overhead lines due to storm winds. Additionally, slippery tracks, which caused traffic stoppages, and signal failures affected various Mälartåg lines.
September 2024: Punctuality for Mälartåg remained low during September, reaching 85%, which is one percentage point better than the previous month. Several major incidents affected punctuality for the month. A train from another operator collided with a tractor trailer near Köping, which brought down the overhead lines and caused a power outage, resulting in significant disruptions. Throughout the month, there were also several wildlife accidents and trees falling onto overhead lines, contributing to delays.
On September 27, Mälartåg faced multiple issues simultaneously: a switch failure in Flen, signal failures at several locations, and a moose collision that stopped traffic. At the same time, a train from another operator needed to be evacuated due to a powerless locomotive.
August 2024: Punctuality was generally low during the summer, despite favorable weather conditions. In August, 84 percent of the trains were on time. Many of the disruptions during the month occurred in the Stockholm area, affecting several of Mälartåg's routes. Södertälje experienced multiple signal failures, a major power outage on the line to Flemingsberg, which impacted traffic for nearly a week, as well as a fire alarm on a train that led to the evacuation of the vehicle. Additionally, accidents and incidents on the tracks contributed to further disruptions in traffic.
April 2024: 89 percent of the trains were on time in April, a decrease of 1 percent compared to the previous month. The major disruptions affecting punctuality were an accident south of Stockholm that resulted in a complete traffic stoppage and a severed signal cable during track maintenance between Nyköping and Norrköping. Many cases of unauthorized individuals on the tracks, as well as a number of vehicle malfunctions on both Mälartåg and other operators, also impacted the traffic.
Mars 2024:Punctuality during March reached 90 percent, an increase of 1 percentage point compared to the previous month. Punctuality was affected by several incidents during the month. A fire in a transformer in Solna resulted in disruptions north of Stockholm, leading to subsequent delays for southbound trains as well. Additionally, a contact wire was torn between Järna and Flemingsberg, and multiple cases of unauthorized individuals in track areas throughout Mälardalen caused further delays. An accident near Nyköping also contributed to impacting the punctuality of the trains.
February 2024: Punctuality improved during February. 89 percent of trains were on time, an increase of 13 percentage points compared to the previous month. The major disruptions were due to infrastructure faults, accidents, and track maintenance, many of them in the Stockholm area. A track fault at Solna caused reductions and delays in traffic, two accidents occurred at Stockholm Södra and Solna, and cracks in a switch between Flemingsberg and Södertälje resulted in limited accessibility. Track maintenance to install a new switch at Härad led to speed reductions, affecting punctuality on the Örebro-Eskilstuna-Stockholm-Uppsala line.
January 2024: Punctuality remained low at 76 percent, an increase of 2 percentage points. The cold winter weather affected the vehicles, resulting in an increased number of vehicle damages, and the infrastructure. Several track and switch faults occurred at multiple locations throughout the month. In week 3, there were track signaling faults south of Stockholm during the morning rush hour, causing train queues in both directions, as well as at Kolmården.
Reliable and punctual transportation, where trains run on time, is important for increasing sustainable travel with regional trains in the Stockholm-Mälaren region. Here, you can read more about the punctuality of regional train services operated by Mälartåg in 2023.
Here we report the punctuality of Mälartåg for 2022. Learn more about the percentage of trains that were on time for the five regional train lines and the causes of delays in the network.