Best App for Cheap Flights in 2026

Google Flights is our pick for most people because it makes research fast. The calendar view shows cheaper days, price tracking sends alerts when a tracked fare changes, and the Explore map shows cheap destinations from your home airport. That combination helps both fixed trips and flexible travel.

It is a search tool, not a booking app. You will usually click through to the airline or an agency to buy. That is often a benefit, since booking direct gives cleaner change and refund handling. Use Google Flights first, then cross-check elsewhere before you pay.

Skyscanner covers airlines and agencies across many countries, and its whole month view helps flexible travellers find the cheapest day. It is especially useful for budget airlines and for routes where Google Flights coverage is thinner. Price alerts track a route without daily manual checks.

Agency results need care. A low headline fare may come with stricter change rules or extra fees at checkout. Compare the final price, baggage terms, and seller before booking, and book direct when the difference is small.

Hopper watches fares and tells you whether to book now or wait, with colour-coded calendars and push alerts. That forecast helps travellers who are unsure about timing, especially on routes with volatile prices. Fare freeze on some bookings lets you hold a price while you decide.

Forecasts can still be wrong when schedules or fuel costs shift suddenly. Use Hopper for the timing call, then check the fare on Google Flights or Skyscanner and consider booking direct. Paid add-ons, such as flexibility plans, are optional and should be weighed against their cost.

KAYAK is a long-running search app with flexible date tools, fare alerts, and a buy or wait forecast. Its hacker fares, which combine separate tickets, can lower the price on complex or multi-city trips. That makes it a useful second search when a simple round trip search looks expensive.

Hacker fares and agency bookings need careful reading. Separate tickets may mean separate baggage rules and no protection if one flight is missed. Check the full itinerary and terms before booking a combined fare.

Going, formerly Scott's Cheap Flights, sends curated deal alerts for your home airports by email or app. It surfaces sales and mistake fares that a normal search might miss, and it vets deals before sending them. That suits travellers who can travel when a good deal appears.

It is less useful for a fixed date and route, and its focus is US departures. The free tier covers limited alerts, while paid tiers add more airports and premium deals. Use Going alongside a search app, not instead of one, unless your travel is fully flexible.

Kiwi.com finds routes that combine airlines in ways a single airline search may not show, including self-transfer connections. Its Nomad tool helps multi-city travellers build a route across several stops. For unusual itineraries, that creativity can save real money.

Self-transfer routes carry risk. If the first flight is delayed, the second airline may not rebook you, and baggage may need to be rechecked. Read the connection terms, allow long layovers, and book direct when the saving is small. Kiwi.com is best for flexible travellers who understand that trade.

Momondo compares fares across airlines and agencies, with a calendar view that shows cheaper days. It is a useful cross-check after Google Flights or Skyscanner, since different search tools sometimes show different agency prices for the same flight. Fare alerts add a simple tracking option.

As with other aggregators, the seller matters. Check baggage, change rules, and total checkout price, not just the headline fare. Momondo is best as a second opinion in your search routine, rather than the only app you trust.

Trip.com is a large travel app with strong coverage in Asia and target price alerts that notify you when a fare hits your price. It suits travellers flying to, from, or within Asia, where its inventory and local airline coverage can beat a US-focused search. Trip tools help manage bookings in one place.

For US domestic trips only, Google Flights or Skyscanner may be simpler. As an agency, Trip.com terms for changes and refunds differ from booking direct. Compare the final price and terms, and use Trip.com where its route coverage is strongest.

Expedia earns its place when you book flight plus hotel together. Bundles can lower the total trip cost even when the flight alone is not the cheapest fare. Rewards and package tools add value for travellers who book both parts of a trip in one place.

For flight-only searches, Expedia rarely beats Google Flights or Skyscanner on price. It is also an agency, so changes go through Expedia rather than the airline. Use Expedia for bundles, and use a search app for flight-only deals.