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Cheap flights from Cardiff to San Francisco Bay Area from £307

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to San Francisco Bay Area departing on 19/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Cardiff to San Francisco Bay Area

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
10:20 - 11:50
CWL
-
SFO
33h 30m1 stop
KLM Logo
13:55 - 16:55
SFO
-
CWL
19h 00m1 stop
£633KLM
Fri, 30 Jan - Fri, 6 Feb
KLM Logo
10:20 - 11:50
CWL
-
SFO
33h 30m1 stop
KLM Logo
07:00 - 09:50
SFO
-
CWL
18h 50m2 stops
£648KLM
Fri, 30 Jan - Fri, 6 Feb
KLM Logo
10:20 - 23:04
CWL
-
SFO
20h 44m2 stops
KLM Logo
07:00 - 09:50
SFO
-
CWL
18h 50m2 stops
£653KLM
Fri, 30 Jan - Fri, 6 Feb
KLM Logo
17:15 - 21:20
CWL
-
SJC
36h 05m2 stops
KLM Logo
22:45 - 09:45
SJC
-
CWL
27h 00m2 stops
£653KLM
Fri, 30 Jan - Fri, 6 Feb
Multiple Airlines Logo
08:35 - 22:41
CWL
-
SFO
22h 06m3 stops
Multiple Airlines Logo
22:30 - 11:30
SFO
-
CWL
29h 00m3 stops
£702Multiple Airlines
Fri, 30 Jan - Fri, 6 Feb
Multiple Airlines Logo
08:35 - 10:57
CWL
-
SJC
34h 22m3 stops
Multiple Airlines Logo
16:25 - 11:30
SJC
-
CWL
35h 05m3 stops
£703Multiple Airlines
Fri, 30 Jan - Fri, 6 Feb
Multiple Airlines Logo
22:25 - 14:45
CWL
-
SFO
24h 20m2 stops
Multiple Airlines Logo
08:25 - 19:45
SFO
-
CWL
27h 20m3 stops
£840Multiple Airlines
Fri, 30 Jan - Fri, 6 Feb

KLM flights from Cardiff to San Francisco Bay Area

Our best KLM deals on Cardiff to San Francisco Bay Area flight tickets
KLM
30 Jan
CWL10:20Cardiff Wales
33h 30m
1 stop
SFO11:50San Francisco
6 Feb
SFO13:55San Francisco
19h 00m
1 stop
CWL16:55Cardiff Wales
£633
Find similar
KLM
30 Jan
CWL10:20Cardiff Wales
33h 30m
1 stop
SFO11:50San Francisco
6 Feb
SFO07:00San Francisco
18h 50m
2 stops
CWL09:50Cardiff Wales
£648
Find similar
KLM
30 Jan
CWL10:20Cardiff Wales
20h 44m
2 stops
SFO23:04San Francisco
6 Feb
SFO07:00San Francisco
18h 50m
2 stops
CWL09:50Cardiff Wales
£653
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Cardiff to San Francisco Bay Area 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, momondo users made 279,928 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Cardiff to San Francisco Bay Area that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 30/1

10:20-11:50

1 stop33h 30m

San Francisco

Fri 6/2

13:55-16:55

1 stop19h 00m

£633

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 30/1

10:20-11:50

1 stop33h 30m

San Francisco

Fri 6/2

07:00-09:50

2 stops18h 50m

£648

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 30/1

10:20-23:04

2 stops20h 44m

San Francisco

Fri 6/2

07:00-09:50

2 stops18h 50m

£653

CardiffSan Jose

CWL - SJC

CWLSJC

Cardiff Wales

Fri 30/1

17:15-21:20

2 stops36h 05m

San Jose

Fri 6/2

22:45-09:45

2 stops27h 00m

£653

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 30/1

08:35-22:41

3 stops22h 06m

San Francisco

Fri 6/2

22:30-11:30

3 stops29h 00m

£702

CardiffSan Jose

CWL - SJC

CWLSJC

Cardiff Wales

Fri 30/1

08:35-10:57

3 stops34h 22m

San Jose

Fri 6/2

16:25-11:30

3 stops35h 05m

£703

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 30/1

22:25-14:45

2 stops24h 20m

San Francisco

Fri 6/2

08:25-19:45

3 stops27h 20m

£840

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 19/1

23:30-14:30

3 stops47h 00m

£307

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 15/1

10:30-16:05

3 stops37h 35m

£335

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 16/1

16:05-14:45

3 stops30h 40m

£370

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to San Francisco Bay Area from

How to get the cheapest flight ticket from Cardiff to San Francisco Bay Area

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 day to depart on your flight to San Francisco Bay Area?

Our data shows that Friday is the least expensive day to fly to San Francisco Bay Area. Tickets to fly out on this day can be as low as £673. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to San Francisco Bay Area on Saturday is £1,032.

Can stopping save me money on Cardiff to San Francisco Bay Area flights?

No. A direct flight is the cheapest option for a flight between Cardiff to San Francisco Bay Area.

Cheap Cardiff to San Francisco Bay Area flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to San Francisco Bay Area

Fastest flight time

33h 30m

Direct flights

None
The fastest flight from Cardiff to San Francisco Bay Area takes 33h 30m
There are no direct flights from Cardiff to San Francisco Bay Area. There are no popular flight routes from Cardiff to San Francisco Bay Area.
Search flight deals

  • When did momondo last update prices for flights from Cardiff Wales Airport to San Francisco Bay Area?

    Prices for flights from Cardiff Wales Airport to San Francisco Bay Area are refreshed on a daily basis.

  • How old do you have to be to fly from Cardiff Wales Airport to San Francisco Bay Area?

    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 Cardiff Wales Airport to San Francisco Bay Area.

  • What documentation or ID do you need to fly to San Francisco Bay Area?

    The required travel and health documents for your San Francisco Bay Area 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 San Francisco Bay Area. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Cardiff to San Francisco Bay Area?

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to San Francisco Bay Area?

Finding the right flight to San Francisco Bay Area from Cardiff is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco Bay Area quick and easy, saving you time and money.

Can I find flights from Cardiff to San Francisco Bay Area with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Francisco Bay Area from Cardiff with this policy.

How can momondo help me find flights from Cardiff to San Francisco Bay Area?

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 San Francisco Bay Area from Cardiff.

I’m not ready to book a flight from Cardiff to San Francisco Bay Area right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Cardiff to San Francisco Bay Area now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco Bay Area and let you know when they change.

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