Cheap flights from San Antonio to London from $321
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to London departing on 7/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from San Antonio to London
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London?
The cheapest month to fly to London from San Antonio is in February. Flight prices, which tend to average around $743, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from San Antonio averaging around $775.
What is the cheapest day to depart on your flight to London?
The cheapest day to depart from San Antonio to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $835. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,031. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.
What is the cheapest time of day to depart on your flight to London?
Flying to London from San Antonio in the evening is the least expensive time of day to depart. momondo users have found prices as low as $861 when looking at flights departing in the evening. Flights to London are more costly in the morning, with an average ticket price of $1,021. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to London?
You are more likely to see cheaper flights to London from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $974 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Antonio for as low as $838 on momondo.
Can stopping save me money on San Antonio to London flights?
You could potentially save up to 17% on your flight if you consider stops on a San Antonio to London flight.
How have San Antonio to London flight prices changed over time?
As of July 2025, prices for San Antonio to London flights are approximately 33% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from San Antonio to London?
Air Canada, United Airlines, and Delta are the most popular carriers operating from San Antonio to London
What airlines fly to London?
British Airways, American Airlines and Iberia are the top three most popular airlines that fly to London from San Antonio according to our data. British Airways is the first choice among our users, with 57% of people opting to fly with this airline when traveling to London. Keep in mind that there are 10 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
When to book flights from San Antonio to London
Cheap San Antonio to London (SAT to LON) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Antonio to London
How far is San Antonio to London by plane?
London is 4985.7 mi away from San Antonio. In terms of flight time, this usually takes a little over 11h 15m.
When did momondo last update prices for flights from San Antonio Airport to London?
Prices for flights from San Antonio Airport to London refresh daily.
How many operators does momondo search for flights from San Antonio Airport to London?
As of July 2025, there are 6 operators available to choose from for flights from San Antonio Airport to London.
How old do you have to be to fly from San Antonio Airport to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Antonio to London?
Based on momondo bookings for flights between San Antonio and London, the leading airline is British Airways, making up 47% of the total bookings. Other popular airlines include United Airlines with 22%, Iberia with 12%, and American Airlines with 10%.
Best airlines flying from San Antonio to London
Compare and see reviews for airlines that fly from San Antonio to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $649 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $662 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $668 | Free Cancellation | Rating 7.0 2,820 reviews | |||
| PriceFrom $698 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $701 | Free Cancellation | Rating 6.6 7,093 reviews | |||
| PriceFrom $715 | Free Cancellation | Rating 7.4 654 reviews |
Traveling to a place near London?
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Why should I use momondo to find a flight deal from San Antonio to London?
It is quick and easy to find San Antonio to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.
Can I find flights from San Antonio to London with flexible booking policies on momondo?
All flight searches from San Antonio to London on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from San Antonio to London?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from San Antonio.
I’m not ready to book a flight from San Antonio to London right now. Can momondo alert me if prices change?
If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from San Antonio and alert you when they change.