San Diego · CA
SAN — San Diego International Airport
Almost downtown, on a single runway, with a Mexican airport as its overflow
San Diego International is remarkably close to the city — the downtown skyline is right there on approach, and the drive is a matter of minutes. It manages a very large traffic volume on a single runway, which is an operational achievement and also its constraint.
The other thing worth knowing is that for travel into Mexico, many travellers here do not use this airport at all. Tijuana's airport is reachable on foot from a terminal in Otay Mesa across a dedicated bridge, and the domestic Mexican fares on the other side are frequently a fraction of the international fares from San Diego.
Terminals and how they connect
Terminal 1 and Terminal 2
Two terminals along the same road, each with its own check-in and security. They are not connected airside — moving between them means going landside and using a shuttle or walking, then clearing security again. Terminal 1 has been undergoing a substantial replacement, so layouts and access roads change.
Getting into San Diego
Times below are realistic ranges rather than best cases. Rail journeys keep to a timetable; road journeys do not, and treating the two the same is how people miss flights.
Taxi or ride-hailing
5–15 minutes to downtown
Genuinely quick. The airport is on the edge of downtown, and this is among the shortest airport transfers of any major US city.
Route 992 bus
10–20 minutes to downtown
A city bus runs between the terminals and downtown, connecting with the trolley network. Inexpensive and perfectly usable with modest luggage.
To Cross Border Xpress at Otay Mesa
25–40 minutes by road
The CBX terminal, from which the bridge crosses into Tijuana airport, is a separate facility southeast of the city. It is not at San Diego airport and needs its own journey.
Connecting through SAN
San Diego is an origin-and-destination airport rather than a connecting one. If your itinerary involves both terminals, allow real time — there is no airside link, so it means leaving and re-entering security.
Worth knowing before you fly
Consider Tijuana for flights into Mexico
A domestic Mexican flight from Tijuana to Guadalajara, León or Los Cabos is often dramatically cheaper than the equivalent international fare from San Diego, and Tijuana serves more Mexican destinations. The Cross Border Xpress bridge makes it practical, though the CBX terminal is a separate drive from the airport.
Terminal 1 is being rebuilt
A large replacement project has been changing the terminal, its roadways and parking in stages. Check current arrangements close to your travel date rather than relying on a previous visit.
One runway means delays propagate
The airport handles heavy traffic on a single runway, so a disruption earlier in the day tends to persist. Earlier departures are more reliable here than at a multi-runway airport.
Terminal assignments, transit timetables and fares all change. Confirm the details that matter to your trip with the airport or transport operator before you travel.
Will you make your connection at SAN?
Most of what a tight connection costs was never about SAN. Border formalities, a bag that is not through-checked and a door that closes before departure are the same at every airport, and they are usually what strands people — so the sum below is real arithmetic even though we hold no transfer times for SAN.
45 minutes to spare
You have 60 minutes after the delay. This connection needs about 15. Enough room for a gate change.
This is the floor, before you walk anywhere. Every minute below holds at any airport, because none of it is a property of SAN — it is border formalities, baggage and a closing gate. Add your terminal change above to finish the sum.
| 15m | Gate closes before departure | typical published gate cutoff |
| 15m | needed in total | |
Arithmetic, not a prediction — we hold no data that would let us put a probability on your flight, so we do not pretend to. The gate cutoff is a typical published figure; confirm your airline's. Your airline's app knows your actual gates, which we do not.
For four hubs we have read the operator's own transfer figures and datestamped them, which lets the arithmetic run without asking you anything: DFW, IAH, MIA and LAX.
If your flight through SAN is cancelled or badly delayed
SAN in the DOT's own numbers
Departures from San Diego as the carriers filed them with the US Department of Transportation for May 2026. This is the figure that decides whether a delay here is anybody's fault but the weather's.
SAN ranks 18th of 41 for departures among the airports we cover, its 22.9% late rate is about typical for the set, and 72.1% of the filed delay minutes were coded as carrier delay or late-arriving aircraft rather than extreme weather or air traffic control, below the 74.6% median here.
- Departures filed
- 7,497
- Over 15 min late
- 22.9%
- Cancelled
- 0.6%
- Carrier delay + late-arriving aircraft
- 72.1%
The last figure is the share of filed delay minutes coded as carrier delay or late-arriving aircraft rather than extreme weather or air traffic control. It sums two BTS fields and is not a BTS field itself, and it establishes no fault: the late-arriving code records that the inbound aircraft was late, not what delayed it. The reasoning, and the objection to it, are set out in the airline accountability index. Summed across reporting carriers only, so a hub carrying a lot of non-reporting regional traffic reads better here than a traveller experiences it.
These are monthly aggregate filing codes. They cannot establish what caused your individual flight, whether it was within the carrier's control, or whether compensation is owed.
The departures from SAN most likely to run late
Every carrier and destination out of San Diego with enough filed departures to measure, worst first. A route missing from this list flies too thinly for a percentage to mean anything, which is a reason to withhold it rather than to soften it.
What the airlines flying here have committed to in writing
Under 14 CFR § 253.4 a carrier's Conditions of Carriage are incorporated into your ticket, which makes them enforceable terms rather than a customer-service policy. Below is what each carrier with filed departures from SAN commits to when the disruption is theirs. These 4 have contract text we have read ourselves.
American Airlines
Ask for the seatAmerican Airlines' contract commits to their own next available flight and says nothing about who sold the ticket.
Rebooking your delayed / canceled flight. Read from the contract on 2026-07-29. Source
Delta Air Lines
Ask for the seatDelta Air Lines' contract commits to their own next available flight and says nothing about who sold the ticket.
Rule 19.A, Delta's Liability in the Event of Schedule Changes, Delays and Flight Cancellations. Read from the contract on 2026-07-29. Source
United Airlines
We hold no textUnited Airlines' contract page refuses automated requests, so we cannot verify what it currently says and will not paraphrase it.
Not yet transcribed. Source
Southwest Airlines
Ask for the refundSouthwest Airlines' contract only says it may rebook you, so there is no seat to demand — but it names a refund as your remedy.
Section 9.b(1)(i). Read from the contract on 2026-07-29. Source
AS also file departures from SAN. We have not transcribed their Conditions of Carriage, so this page says nothing about what they promise rather than guessing.
Get the exact clause and a script to read themThe federal floor, underneath any contract
Statutory minimums, so no airline's contract and no agency's terms can go below them. They follow your itinerary rather than SAN, so each one is set out in full on its own tool:
How SAN compares with airports of its size
A late-departure rate means little on its own, so these are the airports sitting immediately either side of SAN on the same table. Each figure is the share of departures leaving more than fifteen minutes behind schedule, from the same Department of Transportation filing.
Which airlines run late out of SAN
Departures from SAN as filed with the US Department of Transportation, worst first. Only carriers with at least 300 departures in the month appear, so a carrier missing from this table flies here too thinly to measure fairly rather than perfectly.
| Airline | Departures | Over 15 min late | Carrier delay + late-arriving aircraft |
|---|---|---|---|
| Southwest Airlines | 3,387 | 31.3% | 80.3% |
| United Airlines | 933 | 21.4% | 37.1% |
| Alaska Airlines | 1,179 | 15.2% | 59.6% |
| American Airlines | 843 | 14.9% | 78% |
| Delta Air Lines | 832 | 9.6% | 84.3% |
The last column is the share of filed delay minutes coded as carrier delay or late-arriving aircraft, as opposed to extreme weather or air traffic control. It records how the minutes were filed, not who was at fault. Each airline guide carries that carrier's national record; the accountability index sets out why late inbound aircraft is grouped with carrier delay, and publishes the whole table as a downloadable file.
Figures cover May 2026, a single reporting month, from the US DOT Bureau of Transportation Statistics On-Time Performance database. Retrieved 2026-07-28. Reporting under 14 CFR part 234 covers domestic US scheduled service only, so no international route appears — including anything to or from Mexico.
Airlines based at SAN
Carriers based here, which usually means more non-stops and more daily frequencies to fall back on if something goes wrong.
Stuck on hold?
Talk to an independent agent instead
Airline phone queues and chatbots are where a rebooking stalls. Our agents work these routes daily and will look at what is actually available, walk through the letter you are about to send, and tell you what a desk agent will and will not do. We are not the airline and we do not file claims for you — the templates above are yours to send.
FAQ
SAN — common questions
Terminals, transfers and getting into the city.
Can I fly to Mexico from San Diego airport?
There is some service, but many travellers use Tijuana airport instead, reached on foot from the Cross Border Xpress terminal in Otay Mesa. Flights within Mexico from Tijuana are domestic and priced accordingly, which is often much cheaper. The CBX terminal is a separate twenty-five to forty minute drive from San Diego airport.
Are Terminal 1 and Terminal 2 connected at San Diego airport?
Not airside. Changing terminals means exiting, travelling between the buildings landside and clearing security again. Terminal 1 is also being rebuilt in stages, so check current arrangements before travelling.
Still have a question? We're happy to explain — just call.
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