Are Airlines Flying Slower Than They Used To? What’s Really Changed

[takeaways] • Modern commercial aircraft are not slower than their predecessors — most cruise at 550 to 575 mph, the same as they always have. The feeling of longer flights comes from something else entirely. • Airlines now deliberately pad published flight times to improve on-time performance statistics — a flight that "lands early" was always going to land on time by the original schedule. • Routes today are often less direct than they used to be — avoiding congested airspace, geopolitical restrictions, and weather systems can add meaningful time even without the aircraft slowing down. • Flying slightly slower saves significant fuel at scale — on long-haul routes, even a modest reduction in cruising speed can cut costs and emissions meaningfully. • The whole travel day feels longer because we now track everything in real time, compare journeys to imperfect memories, and contend with busier airports and longer security processes. [/takeaways]

If you've ever looked at your boarding pass and thought, "Flights didn't take this long years ago" — you're not imagining things.

Many travellers feel that flights today seem slower, longer, or more drawn out than they used to be. But are airlines actually flying slower than before, or is something else going on behind the scenes?

The short answer: planes are not significantly slower, but published flight times are often longer for very real reasons. Here's what's changed.

Are planes actually slower today?

Modern commercial aircraft are not slower than their predecessors. Most long-haul planes still cruise at around 550 to 575 mph — roughly Mach 0.78 to 0.85. Newer aircraft are typically more efficient and technologically advanced than older models. Speed is rarely the main factor.

So why do flights feel longer?

The five real reasons flights take longer today

[numbered title="Airlines build extra time into schedules on purpose" pill="Schedule padding — the on-time performance trick"]One of the biggest changes is something passengers never see. Airlines now routinely pad published flight times, adding extra minutes that allow them to reduce recorded late arrivals, improve on-time performance statistics, and absorb congestion, weather, and taxi delays. Result: flight durations look longer than they used to, even when the aircraft hasn't slowed down at all.[/numbered] [numbered title="Planes take longer routes than before" pill="Congestion, geopolitics, and jet stream optimisation all add miles"]Flights today often follow less direct paths. Reasons include avoiding congested airspace, weather systems and jet stream conditions, geopolitically restricted or closed airspace, and optimising for fuel efficiency at the best altitude rather than the shortest distance. Sometimes a slightly longer route at an optimal altitude saves meaningful fuel, even if it adds time to the journey.[/numbered] [numbered title="Air traffic congestion has increased significantly" pill="More planes, busier airports, longer taxi times"]There are more flights in the sky than there were decades ago. At busy airports this means longer taxi times before and after landing, more holding patterns circling before clearance to land, and delays waiting for take-off clearance. Even small delays at each stage add up across a journey, making the experience feel slower overall.[/numbered] [numbered title="Fuel efficiency now matters more than speed" pill="A modest speed reduction saves significant fuel at scale"]Fuel is one of the biggest operating costs for airlines. Flying slightly slower can reduce fuel burn, lower emissions, and extend aircraft range on longer routes. On some routes, a modest reduction in cruising speed adds minutes but saves costs that are meaningful across thousands of flights a year.[/numbered] [numbered title="We notice it more because we track everything in real time" pill="The perception of delay has changed even if airborne time hasn't"]Even small changes are more visible now because travellers track flights in real time on their phones, compare current journeys to memories of "faster" trips, and experience security, boarding, and taxi times that can be longer and more complex than before. Add all of those together and the whole travel day can feel stretched — even if actual airborne time is similar to what it always was.[/numbered]

What this means for modern travellers

Longer published flight times and tighter schedules mean travellers rely more heavily on their phones than ever. When flights land later than expected or connections are tight, you may need to rebook transport, contact accommodation, check maps and airline apps, and let people know you've arrived — all quickly, on arrival, in an unfamiliar airport.

That makes instant mobile connectivity on landing genuinely useful, especially when airport WiFi is unreliable or overloaded.

[tip title="After landing: switch off airplane mode, enable your eSIM line, restart mobile data if it doesn't connect immediately"]If you're connecting to local networks for the first time after landing, this sequence resolves most initial connection issues. If your SIMOVO eSIM still doesn't connect after a restart, check that data roaming is enabled on the eSIM line in your device's mobile settings.[/tip]

Staying connected when you land

Many travellers now choose an eSIM so they can connect as soon as they arrive — without queuing for a physical SIM, hunting for airport WiFi, or risking roaming charges from their home carrier when they're tired and in a rush.

[esim flag="🌍" label="SIMOVO eSIM" data="Connected from touchdown" price="from £3" href="https://simovo.com" benefits="Set up before you fly · Active on arrival · No SIM swapping · No roaming charges"]Land connected — from touchdown to taxi rank[/esim]

The bottom line

Airlines are not flying slower in the traditional sense. Schedules are often padded, routes can be longer and more fuel-efficient, and airspace and airports are busier than ever. Travel today is more connected and more dependent on digital tools. Sorting your mobile data in advance keeps the journey smoother from the moment you land.

Related reading

• SIMOVO Travel Journal
• UK eSIM
• USA eSIM
• Türkiye eSIM

[faq] [q]Are planes actually flying slower than they used to?[/q] [a]No — modern commercial aircraft cruise at roughly the same speeds as their predecessors: around 550 to 575 mph for most long-haul planes. The feeling that flights take longer is real, but it's driven by schedule padding, longer routes, and increased congestion rather than slower aircraft.[/a] [q]Why do published flight times look longer than they used to?[/q] [a]Airlines now routinely pad published flight times to improve on-time performance statistics. By adding extra minutes to the scheduled duration, a flight that would previously have been recorded as "on time" or even "early" can now absorb minor delays without affecting the airline's punctuality metrics. It's a real change in how flight times are reported rather than a change in how fast the aircraft fly.[/a] [q]Why do planes sometimes take less direct routes?[/q] [a]Modern flights often follow less direct paths for several reasons: avoiding congested airspace; routing around weather systems; respecting geopolitically restricted or closed airspace; and optimising for fuel efficiency at a better altitude rather than taking the shortest geographical distance. Sometimes a slightly longer routing at the right altitude saves more fuel than the direct path would, making it the more efficient choice overall.[/a] [q]Does flying slower actually save fuel?[/q] [a]Yes — fuel consumption is not linear with speed. Flying slightly below maximum cruising speed can produce meaningful fuel savings per flight. Across thousands of flights a year, those savings are significant both financially and in terms of emissions. The time added per flight is usually small, but the cumulative fuel benefit makes it a rational operational choice for airlines.[/a] [q]Why is mobile data important immediately after landing?[/q] [a]Modern travel depends on digital tools at the exact moment you land — checking onward transport, notifying contacts, accessing accommodation details, and navigating unfamiliar airports. Airport WiFi is often unreliable or overloaded during busy arrival periods. A SIMOVO eSIM activates on landing, giving you an instant private data connection from the moment you switch off airplane mode.[/a] [/faq]