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FLIGHT40 is CheapOair's general-purpose flight code — up to $40 off any flight booking, without the route, season or trip-type conditions attached to its other promotions. That makes it the one to use when your itinerary does not fit a category: a multi-city trip, an international route, an awkward date combination that the seasonal campaigns do not cover. CheapOair searches hundreds of airlines in a single query, which is where an agency earns its place against booking direct, particularly on itineraries that involve more than one carrier. Valid through 6 September. Compare against the direct fare on your specific route before committing.

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Code FLIGHT40 applies up to $40 off flight bookings at CheapOair, entered at checkout.
It is general purpose — no route, season or trip-type condition. The others target roundtrip, one-way, back-to-school or seasonal travel specifically.
Mainly on multi-carrier and multi-city itineraries, where a single airline cannot sell you the combination that is actually cheapest.
The promotion runs through 6 September 2026.
No — Subscribsy is free for shoppers. Brands pay a referral fee when you choose their deal.
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