Best app to book flights in 2026: 9 apps Compared

Skyscanner is our pick for the best app to book flights overall. It scans a wide range of airlines and booking sites, shows flexible date options, and lets you search Everywhere if your destination is open. That breadth helps budget travellers, flexible travellers, and anyone comparing a direct flight with a cheaper connecting option.

Skyscanner is mainly a comparison tool, so check who you actually pay and what their change and baggage terms are. A low headline fare with no bag and strict change rules may cost more than a slightly higher fare that includes both. For research and comparison, Skyscanner is hard to beat.

Kayak suits travellers who like control. You can filter by departure time, number of stops, airport, airline, and fare features, then compare options that other apps may hide. Hacker Fares, which combine separate tickets from different carriers, can lower the price, but they need extra care around connections and baggage.

Kayak also helps after you book, with trip details and price tracking in one place. If you travel often or plan complex itineraries, that combination of search depth and trip management makes Kayak a strong main app. For a simple direct flight, a quicker comparison app may be enough.

Hopper is best when timing matters. Its predictions and alerts tell you whether a fare is likely to rise or fall, which helps if you can wait a few days or need to book now. The calendar view makes it easy to spot cheaper days, and alerts notify you when a watched route drops.

Use Hopper for the forecast, then compare the airline price before you pay. A direct booking often gives simpler help during delays or cancellations, while an agency booking can add a step between you and the airline. For flexible travellers who watch fares, Hopper is a useful and engaging tool.

Momondo is a strong choice when the lowest fare is the main goal, especially on international routes. It searches a broad set of booking sites, including smaller agencies that larger apps may miss, and its price graphs help you pick cheaper travel days. That breadth can reveal savings that a single airline search would not show.

The cheapest result is not always the best value. Check baggage inclusion, change fees, and the booking provider reputation before you pay, since a low fare with poor support can cost more during disruption. For fare hunting, Momondo is one of the most thorough apps available.

Kiwi.com appeals to adventurous travellers who want routes that standard searches miss. By combining carriers, it can create cheaper or faster connections, including multi-city trips that are hard to build elsewhere. That creativity is useful for backpackers, remote destinations, and flexible itineraries.

Self-transfer risk is the key catch. If separate tickets are involved, a delay on one leg may not protect the next leg, and you may need to collect and recheck bags. Read the itinerary type, connection time, and terms before you book, and leave extra time for self-transfers. Used with care, Kiwi.com opens options other apps cannot find.

Expedia earns its place when a trip is more than a flight. Bundling a flight with a hotel can save money and simplify booking, especially for a holiday where you need both anyway. Loyalty rewards on eligible bookings add value for repeat travellers, and the app keeps flights, stays, and cars in one itinerary.

For a flight-only search, a dedicated comparison app may surface more options or lower fares. Expedia is best when the bundle matters, when you want one support contact for flight and hotel, or when a package price beats separate bookings. Compare the bundle total with separate prices before you commit.

CheapOair is a useful app for US domestic travel and for travellers who want agency support with a booking. It lists a broad range of fares, including deals that may not appear on a single airline site, and some bookings include price drop protection subject to terms. That support can help less confident bookers who want help by phone as well as in the app.

As with any agency, check fees, baggage rules, and change policies before you pay, and compare the airline direct price. CheapOair is strongest as a deal-finding and support option for US trips, rather than as a universal replacement for direct airline booking.

Going works differently from the comparison apps above. Instead of searching for a specific trip, you set a home airport and receive alerts when strong deals appear, including mistake fares that may sell out fast. That model suits flexible travellers who can travel when a deal appears, rather than on fixed dates.

Going is best as a second app alongside Skyscanner or Kayak. Use Going to discover deals, then use a comparison app or the airline site to check dates, baggage, and booking terms before you pay. For deal hunters, it is one of the most enjoyable flight apps to have on your phone.

Trip.com is a strong option for Asia-Pacific travel, where its route coverage and local partnerships can surface fares and bundles that Western apps miss. The app also covers hotels and, in some markets, trains, which helps for multi-leg trips across the region. Booking management in the app keeps itineraries in one place.

As with other agencies, compare the direct airline price and check change terms before you book. Trip.com is best when your trip centres on Asia-Pacific, when you want a bundle, or when a route is hard to find elsewhere. For a simple domestic flight in another region, a local comparison app may be just as good.