How to find incredible flight deals with Google Flights

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When great flight deals are reported online, on this site or others, I’m often interested, but it’s exceptionally rare for me to take advantage of them.  The deals hardly ever include departures out of my home airport (Detroit) and the timing of the deals rarely meets my needs.  Luckily, Google Flights makes it easy to find great flight deals on your own.  You can easily narrow the search to flights from your home airport (and other airports you can get to easily), dates of interest, and destinations of interest.  And, if you strike out on finding exactly what you want, you can setup alerts so that Google Flights will let you know when deals of interest appear.  In this post, I’ll show you how to find smoking hot deals on your own…

Step 1: Browse to Google Flights

www.google.com/flights

Despite the image above, I recommend using Google Flights from a desktop browser rather than a mobile phone.

Step 2: Enter your starting city and class of service

Do not (yet) enter your destination.

If you live close to multiple airports, click the departure airport and then click the plus symbol (+) in order to add additional departure airports.  In my case, for example, I could add the Flint Michigan airport, the Lansing Michigan airport, and the Toledo Ohio airport since they’re not too far away.

Step 3: Pick a general destination

In the “Where to?” box, pick a general destination such as a state, country, or continent.  Examples include “California,” or “United States,” or “Europe” or “Asia.”

Press “Search”

Step 4: Explore Destinations

After selecting a general destination and pressing “search”, as described above, you should see a destination map with flight prices for the initially selected (or default) date range:

Step 5: Switch to flexible dates

Click either the start date or end date to bring up a date selector pop-up.  Click on “Flexible dates” and then choose from the options presented.  For the purpose of this post, I’m interested in a 1 week trip in August and so I selected “August” and “1 week”:

After pressing “Done”, I see an updated Explore map:

Step 6: Select max stops

Most of the deals that I found so far require 2 stops.  If I’m only interested in one-stop options, that’s easy to change.  A drop-down on the map itself lets you select the maximum number of stops:

That selection resulted in this:

Step 7: Hover over airports of interest

Google Flights doesn’t automatically show the prices for the best deals.  Instead, it seems to use it’s own logic to pick which destinations you may be interested in.  Luckily, you can easily hover your mouse over other airports of interest to quickly see those prices.

For example, in the map above, neither Paris nor Dublin were shown with prices, but by hovering over each, I found that the prices were pretty good:

Step 8: Try other departure airports

I know from experience that $900 is a very good price for flights from Detroit to Europe, especially for summer travel.  I also know, though, that far cheaper flights are commonly available from other airports.  If you’re willing to separately position to one of these airports, you may be a able to save a lot of money.  When looking for flights to Europe from the Midwest you might want to look at the following departure cities which tend to have great flight prices: Boston, NYC, Washington DC, Miami, and Chicago.  When flying west (to Asia, for example) or when departing from the west coast, make sure to check for flights departing from Los Angeles, San Francisco, Seattle, Vancouver, and Las Vegas.

Google Flights allows a maximum of 5 departure airports.  It seems like you can trick it to using more than 5 by selecting area airports all as one (such as New York City) but then weird stuff happens and it only seems to work.  So, I recommend picking specific airports, like this:

By selecting the above cities, I’m now seeing much cheaper prices:

Step 9: Set the max price

By dragging the price slider to the left, you can more easily see the cheapest available destinations.  I used the slider to reduce the maximum price to $400 round-trip from the U.S. to Europe and found a number of options available: Dublin for $385, Paris for $400, Frankfurt for $364, Munich for $365, Porto for $344, and Lisbon for $326.  Those are amazing prices!

Step 10: Select a Flight

I was interested in flying to Lisbon for only $326 round-trip, so I clicked on Lisbon.  Google Flights then showed a few options: Tap Air Portugal from Newark to Lisbon for $326, and Delta from JFK to Lisbon for $348:

Click “View Flights” for more details and more flight options:

Step 11: Pick a preferred date

Once you’re on the View Flights screen, you’re not limited to the specific dates that the Explore Map chose for you.  Instead, click the departure date to pick a different departure and click the return date to pick a different return.  Google Flights automatically shows you the best available price for each date within the date selector:

As you can see above, only one departure date is available for $326 round-trip, but $349 rates are available every day!

The Downside of Alternate Departure Airports

Above, I showed how I found $326 round-trip flights to Europe.  That’s crazy cheap, but I had to search departure airports beyond my home airport to find that rate.  If I could find a very cheap positioning flight to/from Newark or JFK (depending upon which flight to Europe I choose), it could be well worth booking a flight like this.  That said, there are major problems with this approach:

  1. You (probably) can’t check bags through.  If I were to fly a different airline from Detroit to New York than the one from New York to Lisbon, I wouldn’t be able to check bags all the way through from Detroit to Lisbon.  In some cases, if the two airlines have interline agreements, it may be possible to check bags through, but that’s the exception rather than the norm.  Depending upon how much luggage you plan to travel with, this may or may not be a problem.
  2. When things go wrong, you’re in deep doo doo.  If you book an entire journey through one carrier (even if multiple airlines provide service), they will theoretically rebook you at no additional cost if a flight is cancelled or if you miss a connection due to a delayed flight.  If you book separately, no one will want to help.

One approach that can help, is to position the day before.  In the example in this post, I could fly to New York the day before the flight to Portugal in order to reduce the chance that a delayed positioning flight would ruin my trip.

When traveling alone, I’m usually willing to put up with the inconvenience or risk caused by separately booking positioning flights, but when traveling with my family, I’m willing to pay more (with cash or points) to book the entire journey from my home airport.

Find Domestic Deals Too

Using the same techniques described above, it’s easy to find cheap flights within the United States.  Simply set “United States” or a specific state “California”, “Florida”, etc. as your destination.

Find Business Class Deals Too

Using the same techniques described above, it’s easy to find business class deals too.  For example, I found a number of 1-stop round-trip flights from Detroit to Europe for less than $2,500.  That’s not an amazing price, but it’s very good for Detroit departures, especially for summer travel:

Some of the cheapest business class flights I found were entirely on Delta.  This is very interesting in 2021 for those seeking Delta elite status thanks to Delta’s 2021 elite status accelerators.  See also: Shortcuts to Delta Elite Status in 2021.

Beware the changed final price

One of the downsides of Google Flights is that it achieves its super speed by caching prices as it finds them.  As a result, when prices are changing rapidly (as they often do during fare wars), you may see one price at first, but then a completely different price once you’ve selected particular flights.

For example, I once found a $2K business class flight to London that I wanted to book, but found that the price had jumped considerably (to $3,268!) once I selected my outbound and return legs:

Google Flights Final Price

Amex Platinum International Airline Program

If you have an American Express Platinum Card, and if you’re booking an international trip, it’s worth logging in to Amex Travel to check prices.  Platinum cardholders have access to the Platinum International Airline Program which offers cheaper fares for some flights.  Take the business class flight from Detroit to Venice, for example.  Above, I showed that this round-trip flight cost $2,360.  When I put the same dates and destination into Amex Travel, though, Amex came up with a slightly lower price: $2,233.  That’s a savings of only $127 per passenger, but still it’s something!

More Savings

Check out these other tricks for saving cash or points when booking flights:

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