Cheap flights from San Francisco International to Cardiff

Compare San Francisco International to Cardiff flight deals

Find the cheapest month or even day of the year to fly to Cardiff

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Flight deals from San Francisco International Airport to Cardiff Airport

Looking for a cheap last-minute deal or the best round-trip flight from San Francisco International to Cardiff? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from San Francisco International to Cardiff

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Cardiff flights are currently cheapest in March.

San Francisco International to Cardiff: Alternative routes

Compare routes from San Francisco International to Cardiff below. You may find an airport to fly into that's cheaper, faster, or easier than Cardiff.

San Francisco to Cardiff: Flight information

The things to know before you go.
Cheapest flight found$904
Cheapest month to flyMarch

Finding cheap flights from San Francisco International to Cardiff: Frequently asked questions

The best price we found for a round-trip flight from San Francisco International to Cardiff is $904. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Francisco International to Cardiff. But we found flights with one or more stops from $904.
There are no flights flying from San Francisco International to Cardiff, as of March 2026.
The cheapest month to fly from San Francisco International to Cardiff is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Cardiff Airport on Saturday, March 28, 2026.
No airlines currently offer direct flights between San Francisco International Airport and Cardiff Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Cardiff but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Cardiff is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Austrian Airlines offers the cheapest flight tickets to Cardiff.

Flying from San Francisco International Airport (SFO) to Cardiff Airport (CWL): what you need to know

  • The timezone in Cardiff is UTC+0, which is seven hours ahead of San Francisco.

  • To ensure you catch your SFO to CWL flight, leave plenty of time to check in and find your gate. Arriving two hours before international departures and one hour before domestic flights is the general rule.

  • You'll likely experience bigger queues during popular months like August. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you ample time for security and boarding.

  • Break up your flight or explore another city along the way with a stopover. Just uncheck 'Direct flights only' to see your options when searching for tickets from San Francisco International Airport to Cardiff Airport. Many travelers pass through Amsterdam Airport Schiphol when flying between SFO and CWL.

How to find the cheapest flights from San Francisco International Airport (SFO) to Cardiff Airport (CWL)

  • Currently, $427 is the lowest price we've seen for a one-way San Francisco International Airport to Cardiff Airport flight. The best price for a return plane ticket is $904. Keep in mind that fares may change due to demand when booking.

  • Don't leave everything to the last moment. You're more likely to get cheap tickets from SFO to CWL if you book early. Airlines often have some great early bird rates.

  • Finding cheap flights from San Francisco International Airport to Cardiff Airport is easy if you can be flexible with your trip dates. Use the 'Whole month' search tool to see the lowest fares across the month and land a great deal.

  • Getting your hands on cheap flights from SFO to CWL couldn't be easier with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when a lower fare pops up.

  • Tailor your flights with filters. Choose your departure and arrival times, airlines and total journey duration. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best' flights from San Francisco International Airport to Cardiff Airport.

Handy information about San Francisco International Airport (SFO)

  • Of all flights departing from San Francisco International Airport, 77.36% land on time at their destination.

  • To reach San Francisco International Airport from central San Francisco, it'll take around 20 minutes if you're traveling by car. This depends on traffic though. It's approximately 21 kilometers from the airport to the city center.

  • Expect a trip time of about 45 minutes on public transport.

  • Booked an early flight from San Francisco International Airport to Cardiff Airport? Avoid rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these stays close to SFO:

Arriving at Cardiff Airport (CWL)

  • The last thing you need is a long trip to your hotel if you're getting in late on a San Francisco International Airport to Cardiff Airport flight. Stay at one of these accommodation options near CWL instead:

  • Grab a Cardiff Airport rental car and discover Cardiff and beyond with your own wheels. Europcar, Keddy By Europcar and Enterprise are top outlets to choose from here.

  • Get the best deal by reserving your vehicle from Cardiff Airport about four weeks ahead of your trip.

Getting from Cardiff Airport (CWL) to central Cardiff

  • Cardiff Airport to the center of Cardiff has a drive time of around 30 minutes. It's approximately 27 kilometers away.

  • If you're taking public transport, expect a journey time of about 1 hour 5 minutes.

When to fly to Cardiff Airport (CWL)

  • June is the most popular month for flights from San Francisco International Airport to Cardiff Airport. For smaller crowds, visit Cardiff in April.

  • The warmest month in Cardiff is July, with the temperature ranging between 11ºC (52ºF) and 22ºC (72ºF). Lock in your flights from San Francisco International Airport to Cardiff Airport in this month if this is the kind of weather you like.

  • January sees average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Search for cheap tickets from SFO to CWL sometime then if you want to travel in cooler conditions.

Explore more of United Kingdom

  • London is just one of the many cities in United Kingdom waiting to be explored after you've experienced Cardiff. Around 209 kilometers away to the east, top sights here include Big Ben, The British Museum and Buckingham Palace.

  • Around 145 kilometers north-east of Cardiff, Birmingham is another favorite stop in United Kingdom. Experience this destination's highlights firsthand at Cadbury World, The Library of Birmingham and National Sea Life Centre.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.