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Buying tips

Flight Deals: How to Spot a Real Offer

Not every advertised deal is actually a good offer. Learn to compare historical price, fees, and conditions before buying on impulse.

DT

By Denise Tonin

6 min read · Updated September 21, 2026

A real deal is confirmed by comparison, not by the ad.
A real deal is confirmed by comparison, not by the ad.

Ads for unmissable flight deals show up all the time on social media. Some offers are genuinely good; others just look that way, because they compare to a full fare nobody would pay anyway. Knowing the difference avoids impulse purchases.

A common trick is showing a crossed-out price as a reference, as if it were the route's standard price, when in reality that fare is almost never actually charged. Another is advertising just one leg of a round-trip ticket, or showing the price without boarding and baggage fees, which only appear at the final step of checkout. None of this is illegal, but it distorts how much you think you'll actually save.

How to evaluate

Signs that a deal is real

  1. 01

    The price is below the route's historical average

    Compare it to what the same route usually costs in recent searches, not to a generic reference price.

  2. 02

    The fare matches in direct searches

    Check the price directly on the comparison site, without a coupon or promo code. If it matches the advertised price, that's a good sign.

  3. 03

    The conditions are clear

    Included baggage, rebooking policy, and available seats should be visible before checkout, not hidden in fine print.

  4. 04

    The buying window is reasonable

    Real deals are usually available for a period, even if short. Pressure like only for the next few minutes is a red flag.

Watch out

Signs a deal might just be marketing

Be wary when an ad compares the promotional price to a reference value far above what the route normally costs, when it shows only the outbound leg of a round trip, or when the final price at checkout is quite different from what was advertised because of fees that weren't clear from the start. These signs don't necessarily mean bad faith, but they indicate it's worth checking the numbers carefully before deciding.

In practice

How to confirm if it's really worth it, in practice

  1. 01

    Redo the search on the comparison tool

    Before clicking on any ad, look up the same route and date directly on Viajante Promo to see the real price across the three airlines.

  2. 02

    Look at the total price, with fees

    Confirm whether the advertised value already includes boarding and service fees, or if it will still go up at the final checkout step.

  3. 03

    Compare outbound and return separately

    Sometimes one leg is cheap and the other makes up the difference. Look at the total trip cost, not just one side.

  4. 04

    Check the baggage rule

    A promotional fare without checked baggage can end up costing more in the end than a slightly higher fare that includes it, depending on your trip.

Common questions

Frequently asked questions

How do I know if a flight deal is really cheap?

Compare the advertised price to the same route searched directly on the comparison tool, for the same date. If the numbers match and the route's history confirms it's a low value, the deal is real.

Why does the price sometimes change between the ad and checkout?

This usually happens when the advertised value excludes fees, baggage, or refers to only one leg of the trip. Always check the total price before deciding.

Is every deal with a big discount trustworthy?

Not necessarily. Very large discounts sometimes compare the promotional price to a reference fare that's rarely actually charged. What matters is the final value compared to the route's real history.

Is it worth buying on impulse when I see an offer on social media?

Only after confirming the price directly on the comparison tool. Buying without confirming can mean paying fees or facing conditions that weren't shown in the ad.

How does Viajante Promo help confirm if an offer is good?

It shows prices from LATAM, GOL, and Azul side by side for the same route and date, with no agency fee, letting you quickly compare whether a value advertised elsewhere is really a good deal.

Who wrote this

Who wrote this

DT
Travel consumer columnist, Viajante Promo

Denise Tonin

Writes about price transparency in the flight market and helps readers avoid marketing traps.