| What you enter | The order of the flights and a date for each: you choose a flight for each part of your trip. | A departure city and date, the number of nights away, the places you want to visit and the nights in each; three or more destinations. | A home airport, the cities in any order, a date window (fixed or flexible), nights per city and travelers. Optionally a locked order, a first or last city, and a maximum trip length. |
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| Works out the order of the cities | No. It prices the order you typed. Comparing orders means a search for each, on each set of dates. | Yes. Kiwi says it shuffles the destinations you input and finds the most cost-effective itinerary. | Yes. Every order, on dates that fit together inside your window, with the runner-up orders and what each would cost. |
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| Flexible dates | Each flight has one date. A date grid helps for a single leg. | A departure date and the nights away; the page does not describe a date range. | A window of weeks or months, a range of nights per city, and a maximum trip length; the plan can sit anywhere inside it. |
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| Where you book | Links to the airline or an agency. One ticket when the flights are on one airline or alliance. | On Kiwi.com, the whole trip in one search; the booking page says whether it is one ticket or several. | It does not sell tickets. Each leg links to Google Flights, Kiwi.com, Skyscanner or the airline, and you book there at their price. |
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| If a flight is late | On one ticket the airline rebooks you. Google warns that on a layover or multi-city trip you might miss your second trip and should contact the airline. | Kiwi's page says the Kiwi.com Guarantee covers the trip when a delay makes you miss a connection; read the Guarantee's terms before booking. | Depends on what you book. A two-ticket combo is marked as unprotected, with a risk rating and the connection buffer, and is only shown when it beats the through fare. |
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| Beyond the route | Price tracking and a price graph for a leg. | The rest of Kiwi.com: hotels, cars, and the Guarantee as an add-on. | Layovers long enough to count as a free extra city, two-ticket combos, cheaper days either side, cities you can add cheaply on the way home, airline stopover programs on your route, and an email if the fares drop. |
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| Price | Free. | Not stated on the page; you pay for the trip you book. | Free, no account, up to 3 trips a day. A free account adds live prices on every leg. |
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