Cheap flights from Cardiff to San Francisco
Cheap return flights from Cardiff to San Francisco
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
San Francisco flight facts
What you need to know
What are the cheapest airlines?
- Ryanair
- British Airways
- Icelandair
These airlines usually offer the cheapest flights from Cardiff to San Francisco.
What airlines fly indirectly?
- American Airlines
- Delta Air Lines
- United Airlines
These airlines fly from Cardiff to San Francisco, but you’ll have at least one layover.
How long is the flight?
13 hours 45 minutes
This is the shortest flight time from Cardiff to San Francisco.
Alternative flights from the UK to San Francisco
Check out prices for other routes
Alternative flights from Cardiff
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Cardiff/San Francisco route. There are around 35 flights on any given week from the UK to San Francisco and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Cardiff to San Francisco
Tips and advice from our flight experts
You've searched for flights from Cardiff to San Francisco. We've found 25 flights and compared them to give you the best offer. Ryanair is the average cheapest airline for this route, so look out for them. The cheapest offer we've found is a one-way ticket for Cardiff to San Francisco on 07/02/2026 at 14:40 for £44.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 8,700 km flight from Cardiff to San Francisco.
To find the best offers, book in advance or consider last-minute deals. Look for flights during off-peak seasons. Ryanair is a cheap popular airline for this route, and the average flight duration is about 13 hours 45 minutes. After selecting an offer, fill out your information and proceed to payment. Consider booking a hotel with us or using our flight + hotel service to save time and money.
Other popular destinations near San Francisco
Where other people are flying to
