A
Direct
Your flight
Cabin & seat
The human side of travel planning
How hard will this journey feel for you?
Choose how you travel. See the fatigue, sleep, timing, comfort, elevation and route demands that price and duration cannot explain.
FlyingFlight difficultyItinerary, sleep & jet lag →
DrivingRoad trip difficultyBends, elevation & fatigue →
RailTrain difficultyChanges, sleep & comfort →
BikingRide difficultyClimbing, surface & fitness →
HikingHike difficultyAscent, terrain & exposure →
✓ No sign-up
✓ Runs in your browser
✓ Worldwide routes
AMS → JFK
Flight example
62
Travel Difficulty
A daytime departure could suit your sleep profile better.
1Your trip
2About you
3Your result
Step 1 of 2
Enter your flight
Search for your airports, then copy the local times from your booking.
Start with a direct flight. Use Add a stop only when your booking has another flight segment.
B
Direct
Alternative flight
Cabin & seat
Your trip details stay on this device.
Step 2 of 2
Build your travel profile
These details explain why the same flight can feel easy to one person and punishing to another.
One premium travel toolkit
Five ways to travel. One clear way to compare the effort.
Start with the full personal calculator for your journey, or choose a focused tool when you only need one quick answer.
Flight
Sleep, jet lag, connections, seat comfort and schedule stress.
Check a flight →Drive
Driving time, bends, elevation, road character and driver fatigue.
Open drive tools →Train
Changes, connection buffers, overnight timing, luggage and comfort.
Open train tools →Biking
Distance, climbing, surface, exposure, traffic and personal fitness.
Open biking tools →Hiking
Ascent, terrain, pack weight, remoteness, exposure and endurance.
Open hiking tools →One number, six human factors
A better way to compare the journey, not just the ticket.
Travel Difficulty combines what is on the itinerary with how you personally respond to it.
Journey Load
Flight hours, total elapsed time, distance and number of segments.
Sleep Disruption
How much travel overlaps your normal sleep and whether you can sleep onboard.
Circadian / Jet Lag
Time-zone shift, travel direction and your past jet lag response.
Connections
Number and length of layovers, plus your connection stress level.
Physical Comfort
Time seated, cabin, seat choice, height and comfort sensitivity.
Schedule Stress
Very early starts, red-eyes and arrivals at biologically awkward hours.
Focused travel calculators
One travel question. One useful answer.
01
Jet Lag Calculator
Estimate the time-zone shift and likely adjustment load for your route.
Calculate jet lag → 02Flight Fatigue Calculator
Score how tiring a flight may feel from its timing, length and seat setup.
Score fatigue → 03Drive Difficulty
Analyse a road-trip route for bends, climbing, mapped bumps and personal driving load.
Analyse a drive → 04Train Journey Difficulty
Score changes, overnight timing, seating, crowding and personal fatigue.
Check a train journey → 05Biking Trip Difficulty
Build a cycling route and combine distance, climbing, surface and personal fitness.
Analyse a biking trip → 06Hiking Difficulty
Combine distance, ascent, terrain, pack weight, exposure and endurance.
Analyse a hike →Transparent by design
Useful guidance, without pretending travel is perfectly predictable.
The score is an explainable planning estimate. Flight model 1.3 combines itinerary timing, biological-night overlap, time-zone adaptation, connections, seat comfort and ten focused profile questions. It keeps the booking input short and does not pretend unknown live airport data is exact.
0–100Higher means more demanding
Local onlyNo personal data is uploaded
ExplainableEvery result shows its drivers
Read the full methodology and limitations →