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  List of Airlines at (SFO) airport

The following is a list of airlines serving San Francisco airport (SFO)

 

 Please note: Contact details and schedules, airline offers, and routes may vary according to the season and the commercial decisions of each company, so it is always advisable to check the available flights on the official website of the airport or airline before planning your trip.

 

San Francisco International Airport (SFO) organizes its airlines into four terminals: Terminal 1 (Harvey Milk Terminal 1), Terminal 2, Terminal 3, and the International Terminal. All terminals are connected by the free AirTrain, allowing passengers to move easily between them.

Terminal 1 (Harvey Milk Terminal 1)

This terminal handles domestic flights.

Terminal 2

This terminal handles domestic and international flights (Canada).

Terminal 3

This terminal is the main hub for United Airlines at SFO.

  • United Airlines: Operates all its domestic flights from Terminal 3, using Concourses E and F. Check-in is handled here.

International Terminal

This terminal handles most international flights and some domestic airlines.

The list of airlines is subject to change. It is always recommended to confirm your terminal and gate directly with your airline before arriving at the airport.

 

Latest updates: May 13, 2026

Issues to resolve with the Airline before or after the trip (Updated 2026)

Many passengers do not know who to consult or how to file a complaint when doubts or issues arise before or after traveling, especially with the regulations in force in 2026.
 
Below are the key topics that should be consulted, coordinated, or resolved directly with the Airline. Important note: Due to staffing shortages and high demand in 2026, it is recommended to handle these procedures well in advance compared to previous years.
 
  Check-in process and documentation (Passport with 6 months validity)
 
In addition to the visa, many countries (such as those in the EU, the US, and most of Asia) require that your passport have at least 6 months of validity from the date of arrival. It is not enough for it to be valid until your return; it must meet this margin. Confirm this requirement directly with the airline and the embassy of your destination country before checking in online.
  Luggage limits, prohibited items, and new rules in Europe
 
In 2026, the European Parliament has reinforced the right to carry carry-on luggage (one small piece + one personal item) at no additional cost on flights within the EU, although low-cost airlines may try to limit this. Check the specific policy of your ticket to avoid gate charges.
  Baggage check-in fees and excess baggage fees (always read the fine print)   Requirements for minors traveling without their parents (Beware of notarized letters)
 
Regulations have been tightened against human trafficking. Many countries (such as Italy, France, or Spain) require a notarized or apostilled permit if the minor is traveling alone or with only one parent. Check with the airline if they offer the "Unaccompanied Minor (UM)" service and the required paperwork deadlines.
  Travel coordination for passengers with disabilities, reduced mobility, and pregnant women (by week)
 
In 2026, most airlines require a medical certificate for flights from the 28th week of pregnancy onward. For passengers with reduced mobility, it is mandatory to notify at least 48 hours in advance to ensure ground assistance.
  Claims for cancellations, delays, or boarding denial (New EU regulation 2026)
 
Effective from February 2026: To claim financial compensation (between €300 and €600) for flights delayed by more than 3 hours within the EU, it is now mandatory to first go to a mediator (such as the Touristic Ombudsman) before going to court. Keep all evidence and communications.
  Traveling with pets (cabin or cargo hold) and guide dogs
 
Policies have changed in 2026. More and more airlines allow small pets in the cabin (with prior reservation and payment of a supplement), but on international routes there are usually limited slots (for example, a maximum of 4 animals per flight).
Guide or assistance dogs: By law, they travel for free in the cabin, but you must notify at least 48 hours in advance and provide the documentation (ID card, vaccination record, and health certificate). Do not wait to do this at the airport.
  Possible changes to travel dates or cancellations by the passenger (Check if the "Full refund" option applies or only "Voucher")
 
  Flight schedule confirmation and flight status report (delays, cancellations, rescheduling)
 
  If the airline reschedules your flight to another day, coordinate possible compensation (hotel expenses, meals, and missed connecting flights)
 
 

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