Nothing ruins a long flight faster than opening your streaming app at 35,000 feet and discovering the Wi-Fi costs twenty dollars and barely loads a menu. The fix is simple, but it has to happen before you leave home: download what you want to watch while you still have fast, free internet. Almost every major streaming service now supports offline downloads, and a little preparation turns a six-hour flight into a private cinema.

Start with the apps you already pay for. Netflix, Prime Video, HBO Max, Disney+, and Apple TV+ all let you download titles to a phone or tablet, though the exact rules differ. Netflix limits how many titles you can hold at once depending on your plan, and some licensed films cannot be downloaded at all. Prime Video is generous with downloads but expires some rentals 48 hours after you press play. Disney+ lets you download nearly everything in its catalog. Check each title for the download icon the night before your flight, not at the gate.

Storage is the real bottleneck. A two-hour HD movie takes roughly 2 to 4 GB, while standard definition needs about half that. Before a long trip, free up space by deleting old downloads, offloading unused apps, and moving photos to the cloud. If your phone is nearly full, download in standard definition — on a six-inch screen at arm's length, you will barely notice the difference, and you can fit twice as many films.

Battery life matters as much as storage. Downloading over hotel Wi-Fi the night before is far better than streaming on the plane, because local playback uses much less power than a struggling Wi-Fi connection. Turn on airplane mode, lower your screen brightness one notch below your usual setting, and close every other app. A fully charged phone plus a small power bank covers even a ten-hour flight with room to spare.

Do not forget the free options. Tubi, Pluto TV, and the Roku Channel do not all support downloads, but YouTube lets Premium members save videos offline, and your library's Kanopy and Hoopla apps both support downloads for flights. A couple of downloaded documentaries or a full season of a comfort show costs nothing and fills the hours when your main downloads run out.

Phones get most of the attention, but a laptop is often the better offline screen on a long flight. The Netflix Windows app supports downloads on Windows 10 and 11, and Prime Video allows downloads through its desktop app as well. A laptop screen is bigger, the battery is larger, and you can prop it on the tray table at a comfortable angle. The trade-off is weight and space in a cramped seat. If you travel with a tablet, it splits the difference: a screen large enough to enjoy a film properly, light enough to hold for hours. Whichever device you choose, download on Wi-Fi the night before and test playback with the network off before you leave for the airport.

The night-before checklist is short: pick three to four titles across different moods, download them on home or hotel Wi-Fi, confirm each one plays with Wi-Fi off, charge your device and your power bank, and pack wired earphones as a backup since Bluetooth can be fussy on older planes. Do that once, and the flight becomes the easiest part of the trip. And if your flight does have Wi-Fi, save it for messages and emails — your downloaded films will already be waiting, and they will play perfectly no matter how slow the connection gets.