Flight Route MapGreat circle · Distance

Flight Route Map and Great-Circle Route Planner

Sample

Enter an origin, destination and stopover airports to draw a Great Circle route, compare flight distance and detour ratio, and export a high-resolution route map.

OriginMANManchesterManchester Airport
Via · 1
  • DUB Dublin
DestinationIADWashington, D.C.Washington Dulles International Airport
Total route distance
5,728km
Direct great-circle distance
5,721km
Extra flying distance
7km
Detour ratio
0.1%

Route result

MAN – DUB – IAD

Low detour
Detour ratio0.1%Low detour
Total route distance
3,093 nautical mi5,728 km
Direct great-circle distance
3,089 nautical mi5,721 km
Extra flying distance
4 nautical mi7 km

Segment details

2 Segment
#FromTonautical mikm
1MANManchesterDUBDublin142264
2DUBDublinIADWashington, D.C.2,9515,465

The detour ratio is based on great-circle distances between segments and the origin and destination. It compares route structure only and does not represent an actual flight path or flown distance. Airport information and coordinates are for geographic display and distance calculation only, not navigation, flight planning or operational decisions.

HOW IT WORKS

How Flight Route Map calculates great-circle distance

Flight Route Map keeps airport order, great-circle geometry and flight distance in one transparent tool. Add an origin, stopovers and a destination in travel order to calculate every airport-to-airport Great Circle segment and compare the total with the direct distance. Search works with airport or city names, IATA and ICAO codes.

Popular route examples

MAN–DUB–IADLHR–JFKNRT–LAXAKL–SCLCTU–IAD–JFK

Why flight routes look curved on a map

Flat maps change the visual scale of high latitudes. A Great Circle route provides a spherical shortest-distance reference, not an actual airway. Understanding projection and operational limits makes distance and detour results easier to interpret.

Key features

Aviation knowledge center

Great CircleFlight DistanceHow It WorksFAQETOPSAIRPORT CODESPOLAR ROUTES

Frequently asked questions

Why do flights to North America appear to pass near Greenland? Why do distance sites differ? The FAQ explains Great Circles, ETOPS, IATA, ICAO and actual tracks.

Read 30+ common questions

Data sources

Airport data ships as local JSON with source, import date and limitations documented in the data notes. Coordinates are for geographic display and distance calculation only.

See how the data and rendering work

Popular airports

LHRJFKNRTHKGSINDXBSYDSFOLAXPEKPVGCDG

About the calculation

Detour ratio = (total segment distance ÷ direct origin-to-destination great-circle distance − 1) × 100%. It compares route structure and is not for navigation, flight planning or operational decisions.