How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a travel audio adapter that turns any airplane seat-back jack into a wireless feed for your own Bluetooth headphones, choose Twelve South AirFly Pro; if you need a newer Bluetooth chipset, a bundled dual-prong airplane adapter and a built-in cable groove for studying or long-haul trips, choose Erewll 2026. Both are 3.5mm transmitters, not headphones — the real question is which one fits how you fly and how you study.
• Twelve South AirFly Pro — biggest strength: Bluetooth 5.0 with aptX Low Latency, aptX and SBC codecs, 25+ hours of battery, and a TX/RX switch that also lets it receive Bluetooth audio into a wired speaker.
• Twelve South AirFly Pro — biggest trade-off: No bundled dual-prong airplane adapter and no cable storage, so you supply your own 3.5mm cable and keep it separate.
• Erewll 2026 — biggest strength: Bluetooth 5.4, a dual 3.5mm airplane adapter in the box, a built-in cable storage groove, 15 m range and two-headphone pairing.
• Erewll 2026 — biggest trade-off: Heavier at 90 g, a shorter 20-hour battery, and no receive (RX) mode for pushing Bluetooth into a wired speaker.
• Choose Twelve South AirFly Pro if you want the lightest possible adapter with the longest battery and two-way TX/RX flexibility.
• Choose Erewll 2026 if you want the newest Bluetooth version, an airline adapter included, and tidy cable management for travel.
The AirFly Pro is built around one job: pulling audio out of a 3.5mm jack and sending it to your Bluetooth headphones. Plug it into a seat-back entertainment system, a treadmill, a hotel TV or a gaming device, put your AirPods or wireless headphones in pairing mode, and it connects. Pairing can take up to 90 seconds the first time, but it remembers your headphones afterward and reconnects on its own when you power it on.
What stands out to me is the battery. The spec sheet lists 25+ hours, and it can run while charging over USB-C, so a long transatlantic itinerary is not a problem. It is also small — 1.75" x 1.25" x 0.38" and about 18 g — so it disappears into a pocket or the included travel pouch. Bluetooth 5.0 with aptX Low Latency, aptX and SBC keeps audio and video reasonably in sync, which matters when you are watching a movie on a plane.
The extra trick is the TX/RX switch. In RX mode it does the reverse: your phone or tablet streams Bluetooth into it, and it feeds a wired speaker or AUX input — car stereos, boat speakers, older non-Bluetooth systems. It also pairs two sets of headphones at once, so you and a seatmate can share one screen.
Who should skip it? If you want an airline dual-prong adapter in the box, you will need to buy one separately. And if you specifically want the newest Bluetooth version, the AirFly Pro tops out at 5.0.
The Erewll 2026 leans into travel convenience. It ships with a dual 3.5mm airplane adapter, so it fits both single and dual-prong airline jacks without a separate purchase — a genuinely useful detail if you fly on planes with the two-plug seat-back setup. The built-in cable storage groove keeps things tangle-free, which is more than a gimmick when you are juggling a tray table, a laptop and headphones.
On paper the wireless side is newer: Bluetooth 5.4 with low latency, a 15 m range, and dual-link sharing so two people can pair headphones to the same source. Battery is listed at 20+ hours with a 1.5-hour USB-C recharge, and the unit is certified (FCC, CE, RoHS, BQB) with over-current and short-circuit protection.
It is not just for planes. The spec sheet lists TV, PC and gym treadmill use via AUX or RCA, plus hands-free calls and noise cancellation among its features. It is heavier at 90 g and larger at 2.8" x 1.2" x 0.6", and it is not waterproof, so it is a bag-and-desk device rather than something you clip to a shirt.
Side-by-Side: Which Should You Choose?
• Best for battery life → Twelve South AirFly Pro (25+ hours vs 20 hours).
• Best for airplane jack compatibility out of the box → Erewll 2026 (dual 3.5mm airplane adapter included).
• Best for the newest Bluetooth → Erewll 2026 (Bluetooth 5.4 vs 5.0).
• Best for audio codec flexibility → Twelve South AirFly Pro (aptX Low Latency, aptX, SBC).
• Best for cable management → Erewll 2026 (built-in cable storage groove).
• Best for two-way TX/RX use → Twelve South AirFly Pro (transmit and receive modes).
• Best for lowest weight → Twelve South AirFly Pro (about 18 g vs 90 g).
• Best for range → Erewll 2026 (15 m listed).
If I were buying for flights, I would pick the Twelve South AirFly Pro. In my opinion the 25+ hours of battery, the tiny footprint and the TX/RX switch make it the more flexible long-term tool — the kind of thing that also earns its place when you are studying with noise-cancelling headphones and want a wired source piped in wirelessly. The Erewll 2026 is the smarter pick if you want the airline adapter and cable groove bundled and you value Bluetooth 5.4. For studying and travel, the AirFly Pro is my choice.
are bluetooth headphones allowed on flights
Yes. Airlines allow Bluetooth headphones in airplane mode; the catch is that seat-back entertainment jacks are wired, which is exactly why a transmitter like the AirFly Pro or Erewll 2026 exists — it converts that 3.5mm output into a Bluetooth signal for your own headphones.
do bluetooth headphones work on flights
They work for content on your own phone or tablet. For the seat-back screen you need a transmitter. The AirFly Pro handles this in TX mode, and the Erewll 2026 includes a dual 3.5mm airplane adapter so it fits both single and dual-prong jacks.
are bluetooth headphones ok on flights
Generally yes, as long as you follow crew instructions and keep devices in airplane mode. A transmitter like the AirFly Pro or Erewll 2026 does not change that — it just lets you use your own headphones with the wired in-flight system.
do delta flights have bluetooth for headphones
That varies by aircraft and cabin, so it is worth checking your specific flight. If your seat does not offer Bluetooth, either adapter solves it: plug into the 3.5mm jack and pair your headphones.
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