When to Arrive at the Airport (TSA Wait Calculator)
Find out when to leave for the airport based on your flight type, TSA screening, and crowds.
Covers PreCheck, Clear, and standard security lanes.
TSA (Transportation Security Administration) security wait time estimation helps travelers determine when to arrive at the airport to avoid missing their flight due to security line delays. Wait time depends on the airport, terminal, time of day, day of week, season, and whether you have TSA PreCheck or CLEAR.
How this calculator estimates your arrival time: Rather than guess a live security line, it uses the standard recommended lead time before departure, then adjusts for how you get through security:
| Flight | Regular screening | TSA PreCheck | CLEAR + PreCheck |
|---|---|---|---|
| Domestic | 2 hours before | 90 min before | 75 min before |
| International | 3 hours before | 2.5 hours before | 2 hours before |
Recommended arrival = Flight departure − the lead time above. The result also shows when to leave home, using whatever door-to-terminal time you enter. Thirty minutes is the default, which is right for a lot of people and badly wrong for anyone an hour out or anyone who has to park and take a shuttle.
The deadline nobody plans for is the bag drop, not security. Airlines stop accepting checked bags well before departure, typically 45 minutes out on a domestic flight and 60 on an international one, and that cutoff is enforced by a computer rather than by an agent who might be talked round. If you are checking a bag you have to be at the counter before it, not merely inside the terminal, so the arrival time above is the one that matters and there is no talking your way past it.
Checkpoint wait benchmarks (why the lead times differ):
- Regular lane: 20–45 minutes at busy times (shoes and laptop out, liquids bag separate)
- TSA PreCheck: 5–15 minutes (shoes and laptop stay in, no liquids bag)
- CLEAR + PreCheck: 2–5 minutes (biometric ID skips the document-check line)
Lines are worst from 6–9 AM and 4–7 PM, and on Mondays, Fridays, and holiday weekends. A midweek early-afternoon flight usually sees the shortest lines. When you are unsure, use the longer lead time.
Worked example: A domestic flight departing 7:00 AM with regular screening:
- Recommended lead time: 2 hours
- Arrive at the airport by: 7:00 AM − 2:00 = 5:00 AM
- Leave home by (30-minute drive): 4:30 AM
With TSA PreCheck the lead time drops to 90 minutes, so you would arrive by 5:30 AM.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.