Guide
Is a 45-minute layover enough?
Short answer: 45 minutes is usually enough for a domestic connection on one ticket when both gates are in the same terminal and your first flight lands on time.
It is usually not enough if you're arriving in the US from abroad, changing terminals at a big hub, flying on two separate tickets, or travelling on a packed holiday weekend.
Airlines sell 45-minute connections every day, and most people make them. But "the airline sold it to me" and "I'll make it comfortably" are two different things. Here's how to tell which one you've got.
Why the airline let you book it
Every airport has a minimum connection time, the shortest layover an airline will sell for a given kind of connection. It mostly reflects the walk between gates, plus anything in the way, like a terminal change or passport control. Booking sites won't show you a connection shorter than the minimum, so if you were able to buy it, it's "legal".
Legal means it's possible on a normal day, not that it's comfortable. Travel guides commonly suggest adding 30 to 60 minutes on top of the minimum if you want a buffer.
Your 45 minutes is really about 20
The layover on your booking runs from scheduled arrival to scheduled departure. Here's where it goes on a typical on-time connection:
| What happens | Time it takes | Left of your 45 |
|---|---|---|
| Taxi to the gate after "landing" | 5–10 min | 35–40 min |
| Waiting for the rows ahead of you to get off | 5–10 min | 25–35 min |
| Boarding closes before departure | 10–15 min | 10–25 min to walk |
So a 45-minute layover usually leaves you somewhere between 10 and 25 minutes to get from one gate to the next, and that's if the first flight lands on time. That's plenty in a single concourse, tight across a big hub, and not enough if you have to clear customs.
The quick test
| Your connection | Is 45 minutes enough? |
|---|---|
| Domestic, one ticket, same terminal | Usually yes |
| Domestic, one ticket, changing terminals at a large hub | Tight: move fast, check gates in advance |
| International arrival into the US, then a domestic flight | Usually no: plan on 90 minutes to 2 hours |
| Two separate tickets (even on the same airline) | Risky: you're on your own if you miss it |
| Holiday travel days, or bad weather forecast | Riskier than usual: delays stack up |
Flying into the US from abroad? Allow much longer
At your first US airport you generally have to go through immigration, collect your checked bags, clear customs, drop the bags again, and go back through security before your next flight. Every one of those steps can have a queue. Guides generally suggest at least 90 minutes for an international-to-domestic connection, and two hours is safer at busy hubs.
The exception is preclearance: at a few airports abroad, mostly in Canada, Ireland and the Caribbean, you clear US customs before you take off, and you land in the US as a domestic arrival.
One ticket or two? This matters more than the minutes
If both flights are on one booking and the first one is late, the airline is generally responsible for getting you onto a later flight at no extra cost. If you booked two separate tickets to save money, each airline only cares about its own flight. Miss the second one and you may be treated as a no-show and have to buy a new ticket. On separate tickets, give yourself hours, not minutes.
What missing it actually costs
The real question isn't only "will I make it?" but "what happens if I don't?" That depends mostly on how often your route flies. Miss a connection on a route with a flight every hour and you'll probably be a little late. Miss the last flight of the day, or a route that flies once a day, and you could lose a night, or a whole day of your trip.
Before you accept a 45-minute connection, look up the next departure to your destination after it. If there's another one within an hour or two, the risk is small. If there isn't, pay for the longer layover.
The rule of thumb Wheels Up uses
When I built the layover check in Wheels Up, I set it to rate a connection by its real time, using live arrival and departure times rather than the schedule:
| Real time between flights | Rating |
|---|---|
| 2 hours or more | Relaxed |
| 1 to 2 hours | Comfortable |
| 30 minutes to 1 hour | Brisk |
| Under 30 minutes | Rushed |
Then it takes 30 minutes off for a terminal change and 20 minutes off if the connecting airport is having a bad day for delays, because both eat into the buffer in real life. By that measure, a 45-minute connection with a terminal change at a congested hub rates as rushed. On time, in the same terminal, it rates as brisk: doable, but don't stop for coffee.
Already booked on 45 minutes? Do this
- Check both gates before you leave. Look up the terminal map so you know whether it's a short walk or a train ride.
- Sit near the front. Even a few rows forward can save you several minutes getting off.
- Travel with a carry-on only if you can, especially if you're arriving from abroad.
- Watch your inbound plane. If the aircraft for your first flight is running late from somewhere else, you'll know before boarding that your connection is at risk.
- Know the next flight. Look up the next departure to your destination, so if you miss the connection you can ask for a specific flight straight away.
- Use the airline's app to rebook. If you do miss it on one ticket, the app is often faster than the queue at the service desk.
- Tell the crew. If you're running late, a flight attendant may let tight connections off first or tell you the new gate.
Flying at Thanksgiving?
The days around Thanksgiving are some of the busiest of the year, and queues, full planes and weather delays all make short connections less forgiving. If you can still choose, pick the longer layover. An hour of waiting at the gate beats a night on an airport floor.
This article is general guidance, not advice for your specific trip. Rules differ by airline, airport and country. Always check with your airline, and leave more time if you're unsure.
Questions people ask
Is 45 minutes enough for an international to domestic connection in the US?
Usually not. At your first US airport you generally clear immigration, collect and recheck your bags, clear customs and go through security again. Guides generally suggest at least 90 minutes, and two hours is safer at busy hubs.
Will the airline rebook me if I miss a 45-minute connection?
If both flights are on one booking and the first flight's delay made you miss the second, the airline is generally responsible for rebooking you at no extra cost. On separate tickets, each airline only covers its own flight.
Why did the airline sell me a 45-minute layover if it's tight?
Airlines only sell connections that meet the airport's minimum connection time, so a 45-minute layover is possible on a normal day. It isn't a promise that it will be comfortable.