We’re constantly being asked how we make the maps that show our crazy itineraries. Obviously they’re helpful for blog posts, but I know other people like them for showing to friends and family, adding to a photo album of a trip, etc., and as I was taking some screenshots for an upcoming post it occurred to me that we’ve never done a tutorial.
There are probably other tools and sites out there, but our preference is Great Circle Mapper. The interface is simple, so you could go there right now and not even read this post, but there are some advanced tricks that I thought might be fun to go over.
Know your airport codes
In order to use the map tools, you’ll need to know the airport codes you’re planning on flying through. You can technically search for airport codes based on city names, but if you try and enter a routing with just city names you’ll get an error.
It’s much better to instead enter the IATA code of a given airport. You can enter specific airports (like LHR for London Heathrow), or city codes (LON for all the London airports). To show a routing, connect the airport codes with a dash.
So if you wanted to plot the line between Los Angeles and London, you’d enter:
Which would generate:
This goes beyond city pairs. If you wanted to show a route from Los Angeles to Dubai via London, you’d enter:
Which would generate:
In addition to stringing together flight paths, you can also show multiple routes by separating them with a comma. To show a Miami to Madrid flight on the same screen as the flight to Dubai, you’d enter:
Which would generate:
Basically, you’re going to be connecting everything with a dash, or separating it with a comma. This will be helpful info going forward.
Styling the map
While the default maps are a great start, you can also customize them quite a bit. Let’s use the crazy trip Ben and I are taking as an example of when you might want to tweak the map a bit more. Our routing is:
As one does, of course.
Because the Los Angeles to Moscow flight is a polar route, the map defaults to showing that projection:
But if you scroll down, and click on the “Map Conf” tab, you can choose a different angle for your map.
The rectangular projection is a bit easier to look at, in this case.
You can also change the background of the map. There’s a lighter option, which can be easier to see the lines on:
Or the “Blue Marble” option, which shows some terrain:
You can also have quite a bit of fun with the fonts, line thickness, pin shape, etc. At the bottom of the page there’s a tab for “Markers” which lets you control all of that.
There’s also drop-down menu for “Label” which allows you to choose to display the city name (or several other options) instead of the airport code.
Much better, right?
Changing the colors
This is advanced Great Circle Mapper, but you don’t have to stick with the red dots and lines. Let’s say I wanted to show the breakdown of our current trip, for example, since it involves several sets of tickets.
I can change the color of each line (or series of lines) by adding “color:[color name]” in front of a string, separating it from the next airport code with a comma.
So, if I wanted to emphasize the SkyMiles award we used to get to Belgrade, I might leave that red, and change the rest of the flights to blue. In this case, we’d enter:
LAX-SVO-BEG, color:blue, BEG-JFK-GYD-IEV-JFK-DCA
Or if I wanted to go all out and show each set of tickets in a different color I could do that too:
The code for this is:
LAX-SVO-BEG, color:blue, BEG-JFK, color:purple, JFK-GYD, color:orange,IEV-JFK, color:green, JFK-DCA
Keep in mind that if you want to change the color at a connecting point you’ll need to repeat that city in your string. So something like this:
Would be written as:
LAX-LON, color:purple, LON-JFK
You also don’t have to stick with the stock colors. Any color name can be replaced with a hex code. So if I wanted to choose my own particular shades of purple and red, I could enter:
color:#cc0000,LAX-LON, color:#df80ff, LON-JFK
Much much more
This is just the “pretty” side of Great Circle Mapper. The site owner, Karl L. Swartz, has built a fantastic tool that does much more than show flight paths.
You can also calculate approximate distances of flight segments, which are generally pretty close to the calculations used by the mileage programs. So if you were deciding whether to connect in Chicago or Dallas on a San Diego > New York trip you’d enter:
In addition to the map, the site shows you the flown distance of each flight, and of the routing as a whole.
You can map ranges, look up ETOPS, see the latitude and longitude of an airport, etc. It can be quite the rabbit hole, and he puts up fun featured maps from time to time as well.
So nothing earth-shattering, but hopefully helpful to some of you!
Do you have a flight mapping tool you’d recommend?