Want the full breakdown? Read our guide: What Time Should I Leave for the Airport?
Nothing ruins a trip like sprinting through security while your flight boards. This departure planner works backward from your flight time to tell you exactly when to leave home, factoring in your airport, flight type, and typical Bay Area traffic buffers.
What Time Should I Leave for the Airport?
–:–
Leave home by this time
This is a planning estimate based on typical airport and traffic buffers. Actual conditions vary by day, time, and season — build in extra time during holidays or peak travel periods. Let CherryLimos handle the timing for you →
Covers SFO, OAK & SJCDomestic & internationalAccounts for traffic buffer
How This Planner Calculates Your Departure Time
The calculator works backward from your flight's departure time, stacking four buffers: an airport check-in and boarding cutoff (longer for international flights), a security and terminal-walk allowance specific to your airport, your actual drive time, and a general traffic safety buffer. Add them up and subtract from your flight time, and you get a realistic "leave by" time.
Recommended Arrival Windows by Flight Type
| Flight Type | Recommended Arrival Before Departure |
|---|---|
| Domestic | 2 hours |
| International | 3 hours |
Airport-Specific Considerations
SFO
The largest and most spread-out of the three, with multiple terminals and typically longer security lines — build in extra buffer, especially during peak travel times.
OAK
Generally faster through security than SFO, with a more compact terminal layout — a smaller buffer is usually sufficient outside of peak hours.
SJC
Similar to OAK in size and typical wait times — still worth checking current conditions before a tight-connection trip.
Factors That Can Add to Your Buffer
Checked bags
If you're checking luggage, add extra time for the counter or bag-drop line, especially during busy travel periods.
TSA PreCheck or Clear
These programs can meaningfully cut security wait time — if you have either, you can trim your security buffer somewhat.
Holiday and peak travel dates
Thanksgiving, winter holidays, and other high-volume travel days can double typical security wait times — pad your buffer accordingly.
Why Car Service Removes the Guesswork
One of the biggest variables in this whole calculation is your own drive and parking time — and that's exactly what a car service eliminates. With CherryLimos, your driver tracks traffic in real time and times your pickup precisely, so you're not the one responsible for guessing right.
Frequently Asked Questions
How early should I arrive for a domestic flight?
Generally 2 hours before departure is recommended, though busier airports like SFO may warrant extra time.
How early should I arrive for an international flight?
3 hours is the standard recommendation to account for longer check-in and customs processes.
Does TSA PreCheck change how early I need to arrive?
It can reduce your security wait time significantly, though building in some buffer is still wise, especially at busier airports.
What if I'm checking bags?
Add extra time for the check-in counter or bag-drop line, particularly during peak travel periods.
Is this calculator accurate for holiday travel?
Use it as a baseline, but pad your buffer further during Thanksgiving, winter holidays, and other high-volume travel dates.
Let someone else watch the clock and the traffic. Book your CherryLimos airport ride.