To find cheap flights on Google Flights, start with the Explore map if your destination is open, then use the price graph and date grid to find the cheapest dates. Once you know the cash price, compare it with your card portal or a points transfer before you book.
Most people open Google Flights with a destination already in mind, type it in, pick the cheapest result, and book. That works. It also leaves a lot of value on the table for the traveler whose actual question is "where can I go that's warm in March for under $600" or "I have a free week in May, what's the best trip I can build." This piece walks through how I use Google Flights when the goal is "great trip, good value," not "cheapest seat to a fixed city." The bigger payoff is the decision at booking time about whether to pay cash or burn points.
The premise: Google Flights is the best general-purpose tool for benchmarking what a trip costs in cash today. Once you know that number, every other decision (which date pair, which cabin, which airline, points-portal-versus-cash) flows from it. Treat Google Flights as the price-discovery layer and treat your own card and points stack as the booking layer.
Start With "Where," Not "When": The Explore Workflow
If your destination is flexible, the explore view is the single highest-value move in the whole tool. Enter your home airport, leave the destination blank, set a rough date window, and let Google show you a map with cash fares pinned to cities and regions. You scan, you find the warm places under your budget, and you've narrowed a vague "I want to go somewhere" into a real shortlist in about two minutes.
I use this all the time for shoulder-season trips where the destination is negotiable. Want sun in March from JFK? The map will show Lisbon, San Juan, Cancun, Athens, and Marrakech in roughly the same price band, and you can pick the one that fits your vibe and your award footprint. Want a long weekend out of ORD in October? Same workflow, smaller geography. The deeper mechanics of the Explore map's dates and filters are in our Google Flights Explore guide; what matters here is the use case: replace "I want to go to X" with "I want a trip that feels like Y, for under $Z."
A practical sequencing tip. Start the explore search with your budget cap a little lower than what you'd actually spend. If you've got $700 to spend on the flight, set the slider to $500 first. The destinations that show up are the ones where you'll have real flexibility on dates and cabin without blowing the budget. Then raise the cap and see what opens up.
Date Flexibility Is Where the Real Money Lives
Once you've picked a destination, the next question is not "which is the cheapest flight on my dates" but "which dates make the trip cheapest." The price graph (the rolling chart of lowest fares across a window of departure dates) and the date grid (the matrix of departure-by-return combinations) together answer that.
Say you search Lisbon out of JFK for a Saturday-to-Saturday trip and the fare comes back at $720 in economy. The price graph might show a midweek departure the week before at $480, and the date grid might show Tuesday and Wednesday departures undercutting Saturday ones across the month. Same airline, same routing, same cabin. The only thing that changed is the calendar. Those dollar figures are invented to show the method, and your route will price differently.
Moving your dates by a few days can cut the fare noticeably, and moving them by a week can cut it further. The aspirational traveler who can take Wednesday-to-Wednesday instead of Saturday-to-Saturday is the traveler who flies premium economy or business for the cost of economy on the inflexible date. That's the trade I'd make every time.
A small caveat. The date grid only shows the cheapest fare at each intersection, so if you're trying to combine date flexibility with a specific airline or alliance, you'll need to apply those filters first and then read the grid. Doing it the other way (cheap date first, then filtering) sometimes shows you a different cheap-date pattern than what's actually available on the carrier you wanted.
The Cabin Decision: When to Pay Up
Google Flights lets you pick the cabin class at the top of the search, so you can run the same trip in each cabin. Use that. The point isn't to always book the cheapest seat, it's to see what the cabin upgrade actually costs in the moment so you can decide whether it's worth it.
My rough rules of thumb, from a lot of personal trial and error.
Basic economy is fine on short-haul domestic if you're not checking a bag and you don't care about seat selection. The fare gap to standard economy on a two-hour flight is usually $30 to $60, which doesn't move the needle. On long-haul international, basic economy becomes a different animal: no seat selection, restricted overhead bin space, and sometimes no upgrade eligibility. Avoid it unless the savings are large.
Standard economy is the default and usually the right answer for trips under six hours.
Premium economy starts to pay off on flights over six hours, especially overnight transatlantic and transpacific routes. The fare differential varies by route, but you typically get more pitch, a meaningful upgrade on meals and amenities, and on some carriers a wider seat. The math I use: if the upgrade costs $400 and the flight is ten hours overnight, that's $40 an hour for sleep. Worth it for a trip where day-one is going to be lost regardless.
Business class is where the points conversation really starts. Shoulder-season cash fares for transatlantic business on legacy carriers can run well below peak pricing, so compare the two before you decide. Google Flights shows these when you switch the cabin to business, but the trick is using the date grid to find the specific weeks where the deals run. Shoulder-season weeks are where the cheaper business deals tend to show up on European routes.
Cash Versus Points, the Decision Frame
This is the part that separates the aspirational traveler from the points hobbyist, and it's where Google Flights pulls double duty. Once you have the cash price for the exact itinerary you want, you have a benchmark. Now go check your card travel portal.
The portals (Chase Travel, Amex Travel, Capital One Travel) redeem flexible points at about a cent a point as the baseline, with the exact rate depending on the card and the booking. Chase Travel's Points Boost lifts that on the flights and hotels it flags, with a higher ceiling on the Sapphire Reserve than on the Sapphire Preferred, so check Chase's Points Boost page for your card's current ceiling. Capital One Travel and Amex Travel price flights near that baseline for most cards, and each also lets you transfer points to airline partners separately.
Run the math. Say Google Flights shows a trip at $480 cash. Price the same flight in your card's portal and compare what it asks in points against that cash figure, because the rate depends on whether a Points Boost offer applies to the route. If you're holding a big balance with no transfer-partner redemption queued up, a fair portal price is a simple way to use points and keep your cash.
But here's the thing. Transferring points to an airline partner can price the same flight lower, depending on the carrier and the award space. Say that $480 flight costs 25,000 miles plus $80 in taxes: subtract the taxes and you've bought $400 of flight with 25,000 miles, or 1.6 cents each. Those numbers are invented to show the method. If your goal is the most value per point, a transfer often beats the portal. If your goal is to preserve cash flow without a big partner-search rabbit hole, the portal is the simpler call.
My personal heuristic. For trips under $600 cash, the portal is fine. The difference between a portal rate and a partner rate on a small redemption is real but small in dollars. For trips over $1,500 cash (which is most international business class), transfer to a partner. The cpp difference compounds and the cash savings are significant.
Where to Actually Book
Google Flights routes you to either the airline website or a third-party online travel agency at the end of your search. The right answer is almost always the airline. Direct booking gives you cleaner rebooking if the airline cancels or shifts your flight, better customer service when something goes wrong, full status and elite-qualifying credit, and no exposure to the OTA going under or losing track of your ticket. The savings on an OTA are usually $5 to $30 on a ticket, which isn't worth the operational risk.
Two exceptions where the OTA or portal makes sense. First, if the cash fare on Google Flights is identical to the points-portal redemption from your card, book the portal: same fare, but you preserve flexibility on your cash. Second, if you're booking a complex multi-city itinerary where the OTA's package pricing genuinely beats the airline's own quote, sometimes the savings are real enough to take the trade. Outside those two cases, book direct.
Layer in the Deal-Alert Tools
Google Flights is excellent at telling you what a fare costs today. It's not optimized for telling you when a fare is unusually cheap. For that, layer in a deal-alert service.
Going.com (formerly Scott's Cheap Flights) sends alerts for big price drops and mistake fares from your home airport, including deals you'd never stumble across in Google Flights. The free plan is genuinely useful, and the paid plans add more deals. I've found a paid plan worth the cost if I fly internationally three or more times a year.
Hopper has a fare-prediction feature that tells you "buy now" or "wait" based on historical price patterns for your route. Treat it as a sanity check before you commit, not a promise.
Skyscanner sometimes surfaces fares from low-cost carriers and small regional airlines that Google Flights misses. For European intra-continent travel especially, Skyscanner is worth running in parallel.
The workflow I'd actually use. Going.com runs in the background by email. When a fare alert hits, I run Google Flights to confirm the price and see the date pattern. Then I check my card portal to compare cash-versus-points. If I'm going to book, I do it direct on the airline unless the portal math is exactly equal.
What I'd Actually Do, Step by Step
For a typical "flexible trip, want a good deal" scenario, here's the sequence.
First, run Google Flights with the destination blank and your home airport set, with a wide date window. Note the three or four cheapest destinations that catch your eye.
Second, for the destination you pick, run the date grid and price graph to find the cheapest week within your flexibility. Lock in the date pair.
Third, switch the cabin filter to whatever you're considering (economy, premium economy, business). Look at the dollar differential and decide if the upgrade is worth it for the flight duration.
Fourth, check your card portal for the same itinerary in points. Compare the points cost at the portal's published cpp to the cash benchmark you got from Google Flights.
Fifth, decide. Cash direct on the airline if you want to preserve points. Portal if the redemption rate is solid and you'd rather not deplete cash. Transfer-to-partner if the trip is expensive enough that the cpp difference is meaningful.
Sixth, book. Direct on the airline whenever possible.
This whole loop takes about ten minutes once you've done it a few times. The reason it's worth doing is that the "just book the first result" path leaves real money on the table on almost every trip. The traveler who runs this workflow consistently flies one cabin higher, or one destination further, or one trip extra per year, for the same total spend as the traveler who doesn't.
That's the whole game. Use Google Flights to find out what a trip costs in cash, then use your points and your portal access to decide how you actually pay for it. The cheap fare and the smart booking are two different decisions, and the people who get both right are the ones who travel well on a real-world budget.
Updated October 17, 2026: portal rates.
