Google Flights is the most powerful free tool for finding cheap flights, and most travelers barely scratch the surface of what it can do. Whether you are planning a weekend getaway or a multi-week international trip, knowing how to use Google Flights properly can save you hundreds of dollars on airfare.
This guide covers everything from running your first search to advanced techniques like the Explore map, price tracking alerts, flexible date searches, and hidden features that even frequent travelers overlook. By the end, you will have a complete toolkit for finding the best flight deals every time you travel.
If you are still in the early stages of trip planning, start with our complete guide to planning a trip, then come back here when you are ready to book flights.
What Is Google Flights and How Does It Work?
Google Flights is a free flight search engine that pulls pricing data from airlines and online travel agencies in real time. It does not sell tickets directly. Instead, it compares options across dozens of sources and redirects you to the airline or booking site to complete your purchase.
What makes Google Flights different from sites like Expedia or Kayak is speed, transparency, and the depth of its search tools. Results load almost instantly, prices are shown without hidden fees or sponsored placements pushing expensive options to the top, and the built-in tools for flexible dates, price tracking, and destination exploration go far beyond what competing search engines offer.
To get started, go to google.com/travel/flights. You will see a simple search bar where you enter your departure city, destination, dates, and number of passengers. From there, the real power of Google Flights opens up.
How to Run a Basic Flight Search
Start with the fundamentals. Here is how to run a search and read the results.
Step-by-Step Search
- Go to google.com/travel/flights
- Enter your departure airport or city in the “Where from?” field
- Enter your destination in the “Where to?” field
- Select your departure and return dates
- Choose the number of passengers and cabin class (Economy, Premium Economy, Business, First)
- Click “Search” to see results
Reading the Results
Google Flights shows results in two sections. The top section, labeled “Best departing flights,” balances price with convenience factors like flight duration, number of stops, and departure time. The section below shows “Other departing flights” sorted by price.
Each result displays:
- The airline and flight times
- Total travel duration, including layovers
- Number of stops and connecting airports
- The price per person (including taxes and fees)
- A carbon emissions estimate for the flight
Click on any result to expand it and see the full itinerary, including layover durations, aircraft type, and legroom details. You will also see a list of booking options from the airline and third-party sites, each with its own price.
Searching from Multiple Airports
If you live near several airports, you can add multiple departure airports to a single search. Click the “Where from?” field and add additional airports separated by commas. Google Flights will compare prices from all of them and show you which airport offers the cheapest option.
This is especially useful in metro areas like New York (JFK, EWR, LGA), Los Angeles (LAX, BUR, SNA, ONT), San Francisco (SFO, OAK, SJC), and Washington D.C. (DCA, IAD, BWI). Flying from a secondary airport can save $50 to $200 per ticket.
Using the Explore Map to Find Cheap Destinations
The Explore feature is the single most underused tool in Google Flights, and it is arguably the most valuable. If you are flexible on where you travel, this is where you should start every search.
How to Access the Explore Map
- Go to google.com/travel/explore (or click “Explore” from the Google Flights homepage)
- Enter your departure airport
- Leave the destination field blank
- Optionally set your travel dates, or leave them open to see the cheapest time to visit each destination
An interactive map appears showing round-trip prices to destinations worldwide. Green bubbles indicate the cheapest options. You can zoom in on specific regions, filter by trip length (weekend, one week, two weeks), and set a maximum budget to only see destinations you can afford.
Getting the Most from Explore
- Try different trip lengths. A one-week trip to the same destination might cost $100 less than a five-day trip because of how departure days align with cheaper fares.
- Search by region. Type “Europe,” “Caribbean,” or “Southeast Asia” in the destination field to narrow the map to a specific area.
- Toggle “Nonstop only.” If you want to avoid connections, this filter removes routes that require layovers.
- Check multiple months. Scroll through the date selector to see how prices shift across seasons. You might find that your dream destination is half the price two months later.
- Explore from different home airports. If you can drive to a neighboring city’s airport, run the Explore search from there too.
The Explore map is perfect for the “where should we go?” stage of planning. Once you land on a destination, use a travel itinerary template to start mapping out your daily plans.
Finding the Cheapest Dates with Flexible Date Tools
Date flexibility is the single biggest lever for lowering your airfare. Shifting your departure or return by just one or two days can save $50 to $300 on the same route. Google Flights gives you three tools to find the cheapest travel window.
The Date Grid
After running a search, click the Date Grid button (the calendar icon near the top of results). This displays a matrix showing prices for every combination of departure and return dates across a range. The cheapest combinations are highlighted in green.
What the Date Grid reveals:
- Midweek departures (Tuesday and Wednesday) are almost always cheaper than Friday or Sunday
- Returning on a Tuesday or Wednesday instead of a Sunday can save $30 to $100
- Red-eye flights (departing late at night) often carry the lowest fares of any given day
- The exact dollar difference between each date combination, so you can decide whether shifting one day is worth the savings
The Price Graph
Click the Price Graph button to see a visual chart of fare prices across weeks or months. This view is ideal for spotting trends and seasonal patterns. You can see at a glance whether prices for your route are trending up or down, where seasonal dips occur, and when holiday surges begin.
Flexible Dates Toggle
When entering dates in the search bar, select “Flexible dates” instead of entering specific dates. Google will show you the cheapest options across a range, including the best prices for this month, next month, and several months ahead. This is the fastest way to answer the question “when is the cheapest time to fly this route?”
Setting Up Price Tracking and Alerts
Airfare changes constantly. Rather than checking prices manually every day, let Google Flights monitor your routes and notify you when something changes.
How to Enable Price Tracking
- Run a search for your desired route and dates
- Look for the “Track prices” toggle near the top of the results page
- Turn it on
- Google will send you email alerts when prices drop or rise significantly for that route and date combination
The Price Insight Indicator
When you search for a flight, Google Flights often displays a price insight near the top of results. This tells you whether the current price is low, typical, or high compared to historical averages for that route. A green “Low” label means this is a good time to buy. A “High” label means you might want to wait if your dates are flexible.
Google also uses machine learning to predict whether prices are likely to rise or fall in the coming days. While not always perfect, this prediction is useful as one data point in your decision.
Price Tracking Best Practices
- Start tracking as early as possible. For international flights, begin 4 to 6 months before travel. For domestic, start 2 to 3 months out.
- Track multiple date combinations for the same route. If you are flexible by even a few days, set up separate trackers for different date pairs.
- Act quickly when you get a “prices are unusually low” alert. Fare sales often last only 24 to 48 hours.
- Track from multiple departure airports if you live near more than one.
Price tracking pairs well with a travel budget template. Set your target airfare price in your budget, then let Google Flights tell you when that price becomes available.
Multi-City and Open-Jaw Searches
If your trip involves visiting more than one city, Google Flights’ multi-city search can find combinations that are cheaper than booking each leg separately.
How to Search Multi-City
- On the Google Flights homepage, click “Multi-city” (below the round-trip/one-way toggle)
- Enter your first flight leg (e.g., New York to London)
- Click “Add flight” and enter the second leg (e.g., London to Rome)
- Add as many legs as you need, including the return home
- Google prices each leg and shows the combined total
Open-Jaw Itineraries
An open-jaw itinerary means flying into one city and out of another. For example, you might fly into Paris, travel overland to Barcelona, and fly home from Barcelona. This eliminates the need to backtrack and sometimes costs less than a round trip to either city.
To build an open-jaw search, select “Multi-city” and enter just two legs: your home city to Destination A, and Destination B to your home city. Compare the total against a round trip to either city alone.
Open-jaw searches work especially well for European trips where you can connect cities by train, bus, or short budget airline flights between your arrival and departure cities.
Hidden Features Most People Miss
Beyond the core search and tracking tools, Google Flights has several features that are easy to overlook but genuinely useful.
Baggage Fee Comparison
Click the “Bags” dropdown before searching and specify whether you are bringing a carry-on, checked bag, or both. Google Flights recalculates the displayed prices to include baggage fees. This is critical for comparing budget airlines (which charge for everything) against full-service carriers (which often include bags). A $180 fare with $65 in bag fees is more expensive than a $230 fare with free checked bags.
Carbon Emissions Data
Every flight result includes a carbon emissions estimate. Google calculates this based on the aircraft type, route distance, and average load factor. If environmental impact matters to you, use this data to compare flights. Direct flights almost always produce fewer emissions than routes with connections.
Fare Class Details
Click on a specific flight result to expand it, then look for fare class information. Google Flights shows what is included with each fare tier (Basic Economy vs. Main Cabin vs. Premium). The cheapest fare often restricts seat selection, bag allowances, and change policies. Paying $40 to $60 more for a higher fare class can be worthwhile if it includes a checked bag and change flexibility.
Nearby Airport Suggestions
Google Flights sometimes suggests nearby airports automatically when they offer significantly cheaper fares. Look for a banner at the top of your results that says something like “Flights from [nearby airport] are $X cheaper.” This is easy to miss but can unlock substantial savings.
Layover Details and Self-Transfer Warnings
For connecting flights, Google Flights shows the layover duration and whether the connection requires a terminal change. Pay close attention to “self-transfer” warnings, which mean your bags will not be automatically transferred and you will need to re-check them at the connecting airport. This adds time and complexity, especially on international routes.
Tips for Finding the Best Flight Deals
Combine these strategies with Google Flights’ tools to consistently find the lowest fares.
Be Flexible on Everything
The travelers who find the cheapest flights are flexible on three things: destination, dates, and airports. If you can be flexible on even one of these, you will save money. If you can be flexible on all three, you will find deals that most people never see.
Book Directly with the Airline
Google Flights shows prices from both the airline and third-party booking sites. When the price is the same (or close), always book directly with the airline. Direct bookings are easier to change, cancel, or get help with. Third-party sites add a layer of complexity to customer service that you do not want during a travel disruption.
Consider Nearby Dates and Airports
Use the Date Grid to check prices one or two days on either side of your preferred dates. Check secondary airports within driving distance of your home and destination. These two adjustments alone can save $100 to $300 per round trip.
Set Multiple Price Alerts
Do not track just one search. Set up price alerts for your route across multiple date combinations and from multiple departure airports. More alerts mean more chances to catch a price drop.
Compare Budget and Full-Service Airlines with Bags Included
Always toggle the bag filter to see true total prices. Budget airlines look cheap until you add bag fees, seat selection, and other extras. Full-service airlines look expensive until you realize bags and seat selection are included. The true comparison only works when you factor in everything you actually need.
When to Book Your Flights
Timing your purchase is one of the most important factors in getting a good fare. Here is what the data shows for 2026.
Domestic Flights (Within the US)
- Best booking window: 1 to 3 months before departure
- Too early: More than 6 months out, fares are not yet optimized and you will miss sales
- Too late: Under 2 weeks before departure, prices spike as cheap fare classes sell out
- Cheapest days to fly: Tuesday and Wednesday departures are consistently 15% to 25% cheaper than Friday and Sunday
International Flights
- Best booking window: 2 to 6 months before departure
- Flights to Europe: Book 3 to 6 months ahead, especially for summer travel
- Flights to Asia: Book 3 to 5 months ahead, with shoulder seasons (March to May, September to November) offering the lowest fares
- Flights to the Caribbean or Mexico: Behave more like domestic routes. Book 1 to 3 months ahead.
Holiday Travel
- Thanksgiving: Book by late September for the best selection and prices
- Christmas and New Year’s: Book by October. This is the most expensive travel window of the year, and prices climb sharply inside 6 weeks.
- Spring break: Book 2 to 3 months ahead, especially for warm-weather destinations
- Summer: Book by February to April for June to August travel
For a deeper dive into flight timing strategy, see our guide on the best travel planning apps that can help you monitor prices alongside Google Flights.
Google Flights vs. Other Flight Search Tools
Google Flights is excellent, but no single tool covers everything. Here is how it compares.
| Feature | Google Flights | Skyscanner | Kayak | Hopper |
|---|---|---|---|---|
| Price comparison | Excellent | Excellent | Good | Good |
| Explore / map search | Best in class | Good | Basic | None |
| Flexible date tools | Excellent | Good | Good | Limited |
| Price tracking | Good | Good | Good | Best (predictive) |
| Includes Southwest | No | No | No | Yes |
| Bag fee integration | Yes | No | Sometimes | Sometimes |
| Books directly | No (redirects) | No (redirects) | No (redirects) | Yes (in-app) |
The best approach: Use Google Flights as your primary search tool for its speed, transparency, and Explore map. Cross-check with Skyscanner for routes where budget airlines might offer better pricing. Always check Southwest.com separately, since Southwest does not share its fares with any third-party search engine. And consider Hopper for its price prediction feature, which tells you whether to buy now or wait.
Frequently Asked Questions
Is Google Flights actually free to use?
Yes, completely free. Google Flights is a search engine, not a booking site. It makes money through advertising partnerships with airlines and online travel agencies. You never pay Google anything. When you find a flight you want, Google Flights redirects you to the airline or booking site to complete the purchase.
Does Google Flights show the cheapest possible price?
Google Flights shows prices from most major airlines and online travel agencies, but it does not include every source. Southwest Airlines does not share its fares with Google Flights or any other third-party search engine. Some small regional carriers and certain international budget airlines may also be missing. For the most complete comparison, check Google Flights alongside Southwest.com and Skyscanner.
Can I book flights directly through Google Flights?
No. Google Flights is a comparison tool, not a booking platform. When you select a flight, it redirects you to the airline’s website or a third-party booking site to complete the purchase. This is actually an advantage, because booking directly with the airline gives you better customer service and easier changes or cancellations.
Does searching for the same flight multiple times make the price go up?
This is a common myth. There is no evidence that airlines or Google Flights raise prices based on your search history. What actually happens is that fare classes sell out naturally as other travelers book seats. If you see a price increase between searches, it is almost certainly because the cheapest fare class sold out, not because the airline is targeting you. That said, using incognito mode costs nothing and eliminates any concern.
How accurate are Google Flights price predictions?
Google Flights uses historical pricing data and machine learning to predict whether fares for a route are likely to rise or fall. These predictions are directionally useful, meaning they correctly identify the general trend more often than not. However, they cannot account for sudden fare sales, competitor pricing changes, or unusual demand spikes. Use them as one input in your decision, not the only factor.
What is the best way to find the cheapest flight on Google Flights?
Combine multiple strategies. Start with the Explore map if you are flexible on destination. Use the Date Grid and Price Graph to find the cheapest travel dates. Toggle the bag filter to see true total costs. Search from multiple departure airports. Set up price tracking on your preferred routes. And book when Google Flights shows a “Low” price indicator for your route. The more flexible you are on destination, dates, and airports, the cheaper your flights will be.