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Layover Calculator

Find out if your layover is long enough, what you can do during it, and whether you need a transit visa.

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How to use this calculator

  1. 1

    Enter your layover duration in hours.

  2. 2

    Select your connecting airport.

  3. 3

    Indicate whether it is an international or domestic connection.

  4. 4

    Choose whether a terminal change is required.

  5. 5

    Select your passport category to get transit visa guidance.

Frequently asked questions

What does the "minimum connection time" in the result mean?

It is a figure from a table inside the tool: 15 airports, each with an international and a domestic value, such as 90 and 60 minutes for London Heathrow or 45 and 30 for Frankfurt. If you indicate a terminal change, 30 minutes are added. These are the tool’s own guideline values; they are not the official published connection times of an airport or an airline, which depend on your specific flights and ticket.

How is "time available after connection" calculated?

Layover minutes minus the minimum connection time. A 1.5-hour layover at Frankfurt with no terminal change is 90 − 45 = 45 minutes. If the result is zero or negative the time line reads None, meaning the layover may be too short. A negative result gets the rating Too short; exactly zero gets Tight.

What if I do not know whether I must change terminals?

Selecting Unknown adds nothing, so it is treated the same as No. If a terminal change is possible, select Yes to see the 30-minute penalty applied. At New York JFK with a 1.5-hour international layover, choosing Yes gives a 105-minute minimum and flags the layover as too short.

Why can the comfort rating and the activities text disagree?

They use different cut-offs. The comfort rating reaches Long at 90 free minutes, but the activities text suggests only a quick meal until 120 free minutes. For example, 90 free minutes at London Heathrow shows Long but lists a quick meal and duty-free. Read both and use the more cautious one.

Does it tell me whether I need a transit visa?

No. The passport selector changes only the wording of a note, and the tool contains no transit-visa rules for any country. The note tells you to check the requirements for your passport with your airline or the transit country’s official immigration site. This is not immigration advice.

Does it cover separate tickets, baggage and immigration queues?

No. The tool does not model whether your bags are checked through, whether you must clear immigration or customs, or how long the queues are. If you are on separate tickets, or you must leave the secure area, you need far more time than the table suggests; check with your airline.

Which airports are available?

JFK, LHR, DXB, SIN, NRT, CDG, FRA, AMS, HKG, SYD, LAD, ORD, LAX, BOM and DFW. Other airports cannot be selected. If your airport is not listed, there is no built-in value for it, and a default of 60 minutes applies only if the code is not recognised.

About layover calculator

Layover calculator: connection buffer, free time and comfort rating

How to use the layover calculator

Use this layover calculator to find out how long your connection time is between two flights and whether you have enough time to make your connection. Enter your arrival time and departure terminal, and your next flight's departure time. The tool flags tight connections based on minimum connection times. Free and instant.

How the layover calculator works

The layover calculator subtracts your inbound arrival time from your outbound departure time to compute the total layover duration. It compares this against minimum connection time benchmarks for domestic and international transfers. All calculations run locally in your browser with no flight data uploaded.

How the buffer is built

The tool looks up a built-in connection time for the airport you pick, using the international value or the domestic one, then adds 30 minutes if you say a terminal change is needed. Your layover, converted to minutes, minus that buffer gives the free time. Free time then drives a comfort rating and a line about what is possible. The table values are the tool’s own guidelines rather than official minimums, so your airline’s minimum on your itinerary always comes first.

Built-in minutes by airport
AirportInternationalDomestic
JFK7545
LHR9060
DXB6045
SIN9060
NRT12075
CDG7545
FRA4530
AMS6040
HKG6045
SYD6045
LAD9060
ORD6045
LAX6045
BOM7560
DFW6045

Worked examples

Five connections. The columns show Inputs, Buffer, Free time and Rating, one line per case.

Five connections
InputsBufferFree timeRating
LHR, 3 h, international, terminal unknown90 min90 minLong (lounge or sleep)
FRA, 1.5 h, international, no terminal change45 min45 minComfortable
JFK, 1.5 h, international, terminal change105 minNoneToo short
DXB, 8 h, domestic45 min435 minVery Long (consider city visit)
NRT, 1.5 h, international120 minNoneToo short

What the ratings mean

Free time of 30 minutes or more is Comfortable, 90 or more is Long, and 180 or more is Very Long. Anything from zero up to 30 minutes is Tight, and below zero is Too short. The activities text uses 30, 60, 120 and 240 minutes as its steps, ending with a possible city visit. A city visit also depends on whether you may leave the airport and on queue times at immigration, which the tool cannot know.

Why the same layover can feel different

Frankfurt at 1.5 hours comes out Comfortable, yet Narita at the same duration comes out Too short because its built-in buffer is 120 minutes. Terminal changes matter too: the 30-minute addition turned a Tight JFK connection into one below the minimum. Late inbound flights eat into the layover as well, so a rating of Comfortable is a reason to stay relaxed, not to cut the margin further.

Limits and checks before you book

The tool does not read flight schedules, baggage rules or border rules. Before you book a tight connection, check whether the airline sells the itinerary as a single ticket, whether bags are checked to the final destination, and whether you must pass through immigration. A long layover is also the time to check transit requirements for your passport with the airline or the official immigration site of the transit country.

Layover Calculator – Utinzo

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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →