Find flights
When to book
Airlines
FAQs

Cheap flights from Cardiff to San Francisco from £939

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
11 Mar — 18 Mar1
1 adult

Cheap flight deals from Cardiff to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 March 2025.

Round-trip from

£939

Popular in

August

Cheapest in

March

Average price

£470
Delta
  • Delta
  • 8/6-14/6
  • 4 total stops
  • 44h 05m total
  • Cardiff to San Francisco
Search Deals
Highest demand for flights based on searches. 39% potential increase in price (£416 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£62 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Cardiff to San Francisco

Cheapest flights from Cardiff to San Francisco
Explore the most affordable flight options available from Cardiff to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 March 2025.

Sun 8/609:50CWL - SFO
2 stops21h 30mDelta
Sat 14/610:10SFO - CWL
2 stops22h 35mDelta
Deal found 5/3£939
Sun 8/617:15CWL - SFO
1 stop26h 30mKLM
Sat 14/613:45SFO - CWL
1 stop35h 30mKLM
Deal found 5/3£1,109
Fri 19/1210:20CWL - SFO
2 stops21h 46mMultiple Airlines
Fri 2/113:50SFO - CWL
1 stop19h 05mMultiple Airlines
Deal found 5/3£1,147

Find flights from Cardiff to San Francisco within your budget

Customise your flight search to find flights from Cardiff to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 6 March 2025.

Fly from

Cardiff

Fly to

San Francisco

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sun 8/6

09:50-23:20

2 stops21h 30m

San Francisco

Sat 14/6

10:10-16:45

2 stops22h 35m

£939

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sun 8/6

09:50-11:45

1 stop33h 55m

San Francisco

Sat 14/6

07:30-09:15

2 stops17h 45m

£1,109

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Best time to book a flight from Cardiff to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Cardiff with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Cardiff to San Francisco

Get recent, data-driven insights about flights from Cardiff to San Francisco including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Cardiff to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of £538). Flying from Cardiff to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 6 March 2025.
Delta
8.0
Very Good
8,044 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,044 reviews
Delta
8.0
Very Good
8,044 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,322 reviews
Delta
8.0
Very Good
8,044 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Cardiff to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Cardiff to San Francisco round-trip?

    Our cheapest airline available from Cardiff to San Francisco is Delta. Our recent data shows that you can find tickets from as low as £939 on this airline. An additional option worth looking into is KLM, starting at £1,109.

  • Can I find deals for flights from Cardiff to San Francisco that include hotel bookings?

    Yes. In addition to deals on Cardiff to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to San Francisco.

  • Can I find deals for business class flights from Cardiff to San Francisco?

    Yes. Cheapflights offers flight deals from Cardiff to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cardiff to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of £538). Flying from Cardiff to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Santa Cruz
San Mateo
Los Banos
Vallejo
South San Francisco
Pacific Grove
Union City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cardiff to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Manchester to Las Vegas flights
Manchester to Los Angeles flights
Manchester to San Francisco flights
Manchester to Ontario flights
Manchester to Santa Ana flights
Manchester to San Jose flights
Manchester to Burbank flights
Manchester to San Diego flights
Bristol to Los Angeles flights
Manchester to Oakland flights
Manchester to Sacramento flights
Manchester to Palm Springs flights
Bristol to San Francisco flights
Bristol to Las Vegas flights
Cardiff to San Diego flights
Manchester to Reno flights
Bristol to San Jose flights
Bristol to San Diego flights
Cardiff to Los Angeles flights
Manchester to Long Beach flights
Cardiff to Las Vegas flights
Manchester to Santa Barbara flights
Manchester to Fresno flights
Bristol to Oakland flights
Cardiff to Oakland flights
Cardiff to San Jose flights
Manchester to Santa Rosa flights
Manchester to Tijuana flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to San Francisco?

Cheapflights makes it easy to find Cardiff to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to San Francisco?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Cardiff.

Can Cheapflights find flights from Cardiff to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Cardiff shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Cardiff to San Francisco become cheaper?

Yes, Cheapflights offers price alerts on Cardiff to San Francisco flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.