Cheap flights from London to San Antonio

March is the cheapest month on this route, and the fares listed for September through March, plus June, show how much the rest of the year moves. Spring and autumn are the comfortable seasons in San Antonio, while midsummer there is hot and humid, so a June trip means planning around the heat. Weekday departures out of London usually cost less than Friday and Sunday flights, and the run-up to Christmas is the busiest stretch. Book a few months ahead for spring and autumn travel, and earlier still if you fly over the winter holidays.

No airline flies London to San Antonio non-stop, so every option here is a connecting itinerary. Swiss, Brussels Airlines, Air France, Lufthansa, KLM Royal Dutch Airlines, Finnair, Portug and Icelandair all route you through their home hub, while British Airways and BA CityFlyer sell the trip from London airports. These are full-service carriers rather than low-cost ones, so a checked bag and a seat are usually part of the fare, but the lightest tickets can still leave baggage out, so read what each fare includes before you choose. A single ticket covering both legs protects you if the first flight is late; two separate tickets do not.

San Antonio International is the only airport serving the city, and it sits a short drive north of downtown, so the transfer after a long connecting trip is quick. Taxis and rideshare pick-ups are the easy way in; local buses run to the centre too, and they cost far less if you are not in a hurry. Allow extra time for US immigration at your first point of entry into the United States, because you clear it there rather than in San Antonio, and the domestic leg comes after that.

Currency

USD ($)

Power sockets

Type A, B · 120 V

Language

Samoan, Hawaiian, Chamorro, Carolinian, Spanish

Emergency number

911

Driving side

right

Calling code

+1

Internet domain

.us

Population of San Antonio

1.4 M (2020)

Time zone

UTC-06 (America/Chicago)

Country facts: Wikidata

• Pick your London departure airport first — City, Gatwick, Heathrow, Luton and Stansted all serve this route.
• Check that both legs sit on one ticket, since a self-transfer puts the missed-connection risk on you.
• Read the baggage line on the fare, because a light ticket can mean paying for a checked bag later.
• Make sure your passport and any US entry paperwork are valid well before departure.
• Compare March with the other months that show fares, since spring is usually the cheapest window.
• Leave a comfortable connection time at your European hub, as immigration and terminal changes eat into short layovers.