The 4 Best Apps to Find Cheap Flights in 2026
Finding a cheap flight is mostly a matter of using the right app. Skyscanner compares hundreds of airlines, Kiwi builds creative routes, Hopper tells you when to buy and KAYAK pulls it all together. In this guide we compare the 4 best apps for finding cheap flights in 2026 and travelling for less.
Top apps for finding cheap flights and deals
Apps to compare fares from hundreds of airlines, get alerts when the price drops and find the cheapest flights for your next trip.
Top pick
Skyscanner Vuelos Hoteles
Skyscanner Ltd · Free · 100M+
The best comparison tool
4.7
1.5M reviews
TopApps analysis
Skyscanner is the most used flight comparison tool in the world: it scans hundreds of airlines in seconds and its “everywhere” search turns up remarkable deals.
Skyscanner is the world's most used flight comparison app. It compares fares from hundreds of airlines and agencies in seconds to find the cheapest flight. Its "search everywhere" feature and price alerts make it unbeatable for travelling on the cheap. It also compares hotels and rental cars.
Pros
- Compares hundreds of airlines and agencies
- "Everywhere" search for spotting bargains
- Alerts when a flight's price drops
Cons
- Booking is completed on the airline's or agency's own site
- Prices can change at the booking stage
- Doesn't sell the tickets directly
Kiwi.com - Vuelos baratos
Free · 10M+
Best for creative routes
4.4
128K reviews
TopApps analysis
Kiwi.com combines flights from airlines that do not work together to build routes cheaper than other search engines, with its own connection guarantee.
Kiwi.com stands out for its unique algorithm, which combines flights from airlines that don't normally work together to build routes cheaper than those of traditional search engines. It is the best option for finding creative combinations and saving on complicated journeys, backed by its own connection guarantee.
Pros
- Combines airlines to build cheaper routes
- Finds bargains other search engines don't show
- Kiwi.com Guarantee for missed connections
Cons
- Self-transfers aren't always covered by the airlines
- The in-house guarantee comes with conditions
- Customer service is mostly online
Hopper: Hoteles y Vuelos
Free (with purchases) · 10M+
Best for knowing when to buy
4.4
149K reviews
TopApps analysis
Hopper predicts whether a fare will go up or down and tells you the best moment to book, helping you save by waiting for the right price.
Hopper is not just a search engine: it is an adviser that tells you when to buy. Its algorithm crunches billions of prices to predict whether a fare will rise or fall over the coming days, and it gets it right often. It flags the best moment to book and helps you save by waiting for the right price.
Pros
- Predicts whether a fare will rise or fall
- Tells you the best moment to buy
- Genuinely useful price alerts and tracking
Cons
- Some money-saving features cost extra
- Predictions are indicative, not guaranteed
- Fewer airlines than Skyscanner in some cases
KAYAK: Vuelos, Hoteles, Coches
Free · 10M+
Best for the whole trip
4.8
415K reviews
TopApps analysis
KAYAK compares flights, hotels and cars at once, with tools like the price map. One of the highest rated travel apps (4.8★).
KAYAK is a thorough travel metasearch engine and one of the best rated apps in the sector (4.8★). It compares flights, hotels and rental cars from hundreds of sources in a single search, with tools such as the price map and fare forecasts. Ideal for planning a whole trip from your phone.
Pros
- Compares flights, hotels and cars at once
- One of the best rated travel apps (4.8★)
- Tools such as the price map and forecasts
Cons
- Booking is completed on the provider's website
- So many options can be overwhelming
- Some features show partner advertising
Frequently asked questions
What is the best app for finding cheap flights?
Skyscanner is the best for most travellers thanks to its coverage and its “everywhere” search, ideal for finding deals if your dates are flexible. Kiwi.com shines on complex routes that combine airlines, and Hopper is the best if you want to know the exact moment to buy. Many travellers use several at once to compare.
When is the cheapest time to buy a flight?
In general, booking ahead (weeks or months) tends to be cheaper, and flying midweek (Tuesday or Wednesday) or on less busy dates helps bring the price down. Apps like Hopper analyse price history to predict whether to buy now or wait, and Skyscanner lets you see the cheapest months or days with its price calendar.
Is it safe to book flights through these apps?
Yes. These apps are comparison tools: they show you the offers and send you to the airline or agency to complete the booking securely. Kiwi.com does sell tickets directly with its own guarantee. It is worth reading the conditions (baggage, changes) before paying and, on routes with connections between different airlines, checking whether those connections are protected.
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