They sound similar but do completely different jobs. One brings a companion for less; the other lifts you into a better cabin. Here is how to pick the right one for your trip.
A lot of people assume a companion voucher and an Avios upgrade are two versions of the same thing. They are not. Understanding the difference stops you burning a valuable voucher when a simple upgrade would have done, and vice versa. This guide lays out what each does and when each wins.
What you’ll learn:
The confusion is understandable — both use Avios, and both can end with you in a nicer seat. But they solve different problems. A companion voucher is about who flies: it lets a second person come along on a reward booking without a second set of Avios. An Avios upgrade is about which cabin you sit in: it lifts a booking into a higher class.
Get this straight and the choice becomes easy. Bringing a partner to New York in business class? That is a voucher job. Flying solo and want to turn your economy seat into premium economy? That is an upgrade.
One line to remember: a voucher adds a passenger cheaply; an upgrade improves a seat. They are not substitutes.
A companion voucher books two reward seats in the same cabin on the same flights for the Avios of one. You pick the cabin at the point of booking — economy, premium economy, Club World or First (the last two only with the Premium Plus voucher). It does not touch a cash ticket and it does not lift you between cabins; it simply removes the second passenger’s Avios cost. You still pay taxes and surcharges for both.
For the full mechanics — earning, the £15,000 spend rule, cabin restrictions and expiry — see our complete companion voucher guide.
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An upgrade takes a booking you already hold and moves it into a higher cabin. With an Avios upgrade, you pay Avios (plus any fare difference in taxes) to jump, say, from World Traveller Plus to Club World, subject to upgrade reward availability in the higher cabin. It is a solo-friendly tool: there is no second passenger involved, and it can rescue a trip when two full reward seats are not available but an upgrade seat is.
The trade-off is that upgrade availability is its own bottleneck, and the value per Avios is usually lower than a voucher redemption for two. It is about comfort for one, not economy for two.
| Companion voucher | Avios upgrade | |
|---|---|---|
| Main purpose | Bring a second passenger cheaply | Move to a better cabin |
| Best for | Two people flying together | Solo or small-group comfort |
| Changes cabin? | ||
| Halves per-person Avios? | ||
| Value for two long-haul | Highest | Moderate |
Still weighing it up? Run your specific trip through the companion voucher calculator to see the Avios saved, and read our best uses guide for the redemptions that squeeze out the most value.
The AviosArcana Editorial Team
We decode the British Airways loyalty programme in plain English, cross-checking every figure against BA’s published rules. We only recommend products we would use ourselves — and we tell you plainly when a redemption is not worth it.