There's a piece of travel advice that refuses to die: search a comparison site to find the flight, then book straight with the airline because it's "always cheaper that way." It used to be more true than it is now. Here's what actually happens when you compare the two side by side.
Where the "book direct" advice comes from
A few years ago, some airlines added surcharges to fares sold through third-party agents, and some online travel agencies added their own markup on top of the base fare. Booking direct skipped both, so it really was the cheaper move more often than not. Airlines also leaned into this with messaging like "best price guaranteed when you book with us."
That gap has narrowed. Most airlines now distribute the same fares through comparison engines that they sell on their own site, and a flight search tool like Aviasales pulls prices from hundreds of airlines and agencies at once rather than marking anything up — so you're seeing the real fare, not an inflated one.
What a comparison site actually gets you
The real advantage of searching before booking isn't a secret discount — it's coverage. A single airline's own site only shows you that airline's own fares. A comparison search shows you every airline flying your route side by side, including budget carriers you might not have thought to check directly, and it flags the cheapest combination of dates automatically if your travel dates are flexible.
For a route served by multiple airlines, that comparison step alone is usually where the real savings show up — not from any special deal, just from seeing options you'd have missed by going straight to one airline's site.
Where booking direct still has an edge
Direct booking isn't pointless. It tends to win on:
- Changes and cancellations — dealing with the airline directly, with no agent in between, is usually faster if your plans shift.
- Loyalty points and status — some airlines only credit miles or status progress reliably on fares booked through their own site.
- Bundled extras — seat selection, bags, and fare-class upgrades are sometimes easier to add correctly at the point of booking directly, rather than through a third party.
A practical way to use both
| Step | What it's for |
|---|---|
| 1. Search a comparison site first | See every airline on the route and the cheapest dates, not just one carrier's fares |
| 2. Note the airline and price that wins | This becomes your baseline to beat or match |
| 3. Check that airline's own site | Confirm the fare matches, and check if booking direct adds any perks that matter to you |
| 4. Book wherever the total is actually lower | Fees, seat selection, and bags can tip the total either way |
The comparison search is what most people skip, and it's also the step that actually saves money — not because agents undercut airlines, but because you can't compare a fare you never saw.
Start with a comparison search before you book anywhere:
Compare flight pricesBottom line
Neither option reliably beats the other on its own — the airline's own site isn't secretly marked up, and a comparison engine isn't secretly discounted. The fare gap mostly comes from seeing more options, not from which button you click to pay. Search wide first, then book wherever the total — fare plus fees plus anything you actually value, like flexible changes — comes out lowest.