Best Cheap Flights Sites: Metasearch, Agencies and Deal Feeds

• 3

  Different business models sold under the label “cheap flights site”

• 2

  Sites worth checking for the same fixed itinerary

• 1

  Checkout that owns the ticket when something goes wrong

• 8 Nov 2026

  Date the linked product and help pages were reviewed

How these sites were judged

Those four are not interchangeable, and most “best cheap flights site” lists blur them into one ranked table. Ranking them against each other on price alone would be dishonest, because a deal blog cannot answer a fixed-date query and a metasearch engine will never tell you about a fare on a route you did not think of.

So the comparison here is by job: what you bring, what the site gives back, and what it costs you to use. For a head-to-head on how a departure-airport search behaves in each of the big three, our Skyscanner versus KAYAK piece goes deeper.

The sites at a glance

Metasearch sites: Skyscanner, KAYAK and Momondo

Skyscanner, KAYAK and Momondo all do the same basic thing: take your query, ask a set of airlines and agencies, and show the results. The differences are in the browsing tools and the seller pool.

Skyscanner’s “Everywhere” search is the reason it earns a first look when the destination is open; it converts an airport and a month into a destination list. Those flexible-view figures are estimates based on the cheapest prices recent users found, not held quotes, so treat them as a shortlist generator and open exact dates before you budget. KAYAK adds a seven-day forecast with a confidence level, which is useful for the book-now-or-wait decision, and it is explicit that predictions are not guarantees.

Momondo is a useful second opinion when the question is not “which route” but “which agency is cheapest for these flights”. It sits in the same corporate group as KAYAK, so expect overlap in the supplier list rather than a completely different market. Running the same itinerary in two of these three takes about a minute and is the cheapest diligence available.

Google Flights as the neutral baseline

Google Flights is the most neutral baseline of the group, in the sense that it is a comparison layer rather than a seller with its own margin to protect. For a known route it is fast, the date grid is easy to read, and the price-history and tracking features make it the natural place to decide whether to buy or wait.

Two limits matter. First, Google says it compares offers from a large partner set but does not claim to show every available offer, so a cheaper seller can exist outside it. Second, its tracking is attached to a route or a set of dates rather than to one exact itinerary, which is not the same promise as monitoring a specific trip against your maximum.

Use it as the reference price. If a site claims a saving, the number it has to beat is the one Google shows for the identical flights, same cabin, same bags, same day.

Kiwi.com and the self-transfer model

Kiwi.com sells tickets rather than redirecting you, and its distinctive product is the virtual interlining of low-cost carriers into a single itinerary you could not otherwise book. That genuinely opens cheaper routings, especially across two carriers that do not interline.

The trade is that these are usually self-transfer itineraries. If the first flight is late, nothing obliges the second airline to rebook you, and Kiwi’s own protection is a product with conditions rather than a right. Read what is and is not covered before treating a stitched routing as equivalent to a protected connection.

For a traveller with hand luggage, a generous layover and a tolerance for risk, this can be the cheapest option on the page. For a family with checked bags and a fixed arrival time, the same itinerary can be a false economy.

Free deal blogs: Secret Flying and Fly4Free

Secret Flying and Fly4Free publish fares they find, free, with no personalisation. Their value is the thing no search engine can do: put a destination in front of you that you were not looking for.

Their weakness is symmetrical. They cannot answer your dates, the fares are usually long-haul, often from a handful of hub airports, and by the time a post is a day old the fare may be gone. They are a discovery channel, not a booking tool, and treating them as a price source for a specific trip produces frustration.

The healthy way to use them is with a shortlist in mind and no deadline. If something appears that fits, verify it immediately at the airline, because these fares have a short life.

Paid memberships: Jack’s Flight Club and Going

Jack’s Flight Club serves a largely UK audience and Going a largely US one, and both sell the same underlying idea: a person chooses the fares and you get an email. That editorial filter is the product, and for travellers with flexible dates it can beat searching, because it removes the blank page.

Both are memberships with free and paid tiers, and both are constrained by geography: a deal feed built around one country’s departure airports is thin if you live somewhere else. Neither will price a Tuesday-to-Sunday trip on a specific route, and neither gives you a target-price watch on your own itinerary.

If you already know what you want, a membership is the wrong shape of tool. If you do not, it is one of the better ways to spend a small monthly amount.

Where Blame the Fare fits

Blame the Fare is a deal feed plus a monitoring product. The public feed shows a small number of current deals with the route, price and discount visible; members see the full daily feed with filters, plus exact-trip Watches checked hourly against the price you set.

It scouts 38 departure airports, 13 in the UK and 25 in the US, and every published deal carries a verified saving rather than a badge on a fare that is simply low. It does not sell tickets: the fare links out to the airline or provider, and you book there. AI trip search is not live yet, and nothing on the site pretends otherwise.

The honest limitation is that it is a deal feed first. If your trip is fixed and imminent, a metasearch engine is the faster answer; the Watches earn their place when you have a target price and some weeks to wait.

Which site to open first

Open one site first based on what you already know, then use a second only to check the same number.

1. Destination and dates known: Google Flights, then the airline.
2. Month known, destination not: Skyscanner Everywhere, then exact dates.
3. Route and dates known but the timing is open: set an alert and stop searching.
4. Nothing known and no deadline: a free deal blog or a membership.
5. Willing to risk a self-transfer: compare Kiwi.com against the protected routing.

Whatever you choose, finish at the seller. A comparison site cannot be responsible for a ticket it did not issue, and the cheapest page is worth nothing if the agency behind it cannot be reached when your flight is cancelled. For the wider field of search tools by task, our best flight search sites guide and the Google Flights alternatives comparison cover the same ground from a different starting point.