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Cheap flights from San Francisco to Knock from €784

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 Francisco to Knock departing on 14/7. 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 San Francisco to Knock

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
19:30 - 12:35
SFO
-
NOC
33h 05m
1 stop
British Airways Logo
13:05 - 17:40
NOC
-
SFO
36h 35m
1 stop
€1,136British Airways
Sun, 6 Sep - Wed, 9 Sep
British Airways Logo
23:30 - 12:35
SFO
-
NOC
29h 05m
2 stops
British Airways Logo
13:05 - 17:40
NOC
-
SFO
36h 35m
1 stop
€1,139British Airways
Sun, 6 Sep - Wed, 9 Sep
British Airways Logo
07:00 - 12:35
SFO
-
NOC
21h 35m
2 stops
British Airways Logo
13:05 - 00:39
NOC
-
SFO
19h 34m
2 stops
€1,148British Airways
Sun, 6 Sep - Wed, 9 Sep
Multiple Airlines Logo
10:24 - 12:35
SFO
-
NOC
18h 11m
2 stops
Multiple Airlines Logo
13:00 - 00:32
NOC
-
SFO
19h 32m
2 stops
€1,980Multiple Airlines
Sat, 29 Aug - Sun, 20 Dec
Aer Lingus Logo
08:00 - 12:35
SFO
-
NOC
20h 35m
2 stops
Aer Lingus Logo
13:05 - 13:50
NOC
-
SFO
32h 45m
1 stop
€5,410Aer Lingus
Thu, 9 Jul - Sun, 12 Jul
Aer Lingus Logo
10:09 - 12:35
SFO
-
NOC
42h 26m
2 stops
Aer Lingus Logo
13:05 - 23:59
NOC
-
SFO
42h 54m
2 stops
€5,592Aer Lingus
Thu, 9 Jul - Sun, 12 Jul
Aer Lingus Logo
19:30 - 12:35
SFO
-
NOC
33h 05m
1 stop
Aer Lingus Logo
13:05 - 13:50
NOC
-
SFO
32h 45m
1 stop
€6,296Aer Lingus
Thu, 9 Jul - Sun, 12 Jul

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British Airways flights from San Francisco to Knock

Our best British Airways deals on San Francisco to Knock flight tickets
British Airways
6 Sept
SFO19:30San Francisco
33h 05m
1 stop
NOC12:35Knock Intl
9 Sept
NOC13:05Knock Intl
36h 35m
1 stop
SFO17:40San Francisco
€1,136
British Airways
6 Sept
SFO23:30San Francisco
29h 05m
2 stops
NOC12:35Knock Intl
9 Sept
NOC13:05Knock Intl
36h 35m
1 stop
SFO17:40San Francisco
€1,139
British Airways
6 Sept
SFO07:00San Francisco
21h 35m
2 stops
NOC12:35Knock Intl
9 Sept
NOC13:05Knock Intl
19h 34m
2 stops
SFO00:39San Francisco
€1,148

Aer Lingus flights from San Francisco to Knock

Our best Aer Lingus deals on San Francisco to Knock flight tickets
Aer Lingus
9 Jul
SFO08:00San Francisco
20h 35m
2 stops
NOC12:35Knock Intl
12 Jul
NOC13:05Knock Intl
32h 45m
1 stop
SFO13:50San Francisco
€5,410
Aer Lingus
9 Jul
SFO10:09San Francisco
42h 26m
2 stops
NOC12:35Knock Intl
12 Jul
NOC13:05Knock Intl
42h 54m
2 stops
SFO23:59San Francisco
€5,592
Aer Lingus
9 Jul
SFO19:30San Francisco
33h 05m
1 stop
NOC12:35Knock Intl
12 Jul
NOC13:05Knock Intl
32h 45m
1 stop
SFO13:50San Francisco
€6,296

momondo Fare Finder

 
Customise your flight search to find flights from San Francisco to Knock 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 13,528 searches. Data last updated 6 May 2026.
Use the filters below to find and compare flights from San Francisco to Knock that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 6/9

19:30-12:35

1 stop33h 05m

Knock Intl

Wed 9/9

13:05-17:40

1 stop36h 35m

€1,136

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 6/9

23:30-12:35

2 stops29h 05m

Knock Intl

Wed 9/9

13:05-17:40

1 stop36h 35m

€1,139

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 6/9

07:00-12:35

2 stops21h 35m

Knock Intl

Wed 9/9

13:05-00:39

2 stops19h 34m

€1,148
Fastest return journey

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sat 29/8

10:24-12:35

2 stops18h 11m

Knock Intl

Sun 20/12

13:00-00:32

2 stops19h 32m

€1,980

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Thu 9/7

08:00-12:35

2 stops20h 35m

Knock Intl

Sun 12/7

13:05-13:50

1 stop32h 45m

€5,410

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Thu 9/7

10:09-12:35

2 stops42h 26m

Knock Intl

Sun 12/7

13:05-23:59

2 stops42h 54m

€5,592

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Thu 9/7

19:30-12:35

1 stop33h 05m

Knock Intl

Sun 12/7

13:05-13:50

1 stop32h 45m

€6,296
Cheapest one-way

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Tue 14/7

10:15-12:35

2 stops18h 20m

€784
Fastest single journey

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Mon 11/5

11:16-12:35

2 stops17h 19m

€841

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Mon 15/6

06:00-12:35

3 stops46h 35m

€1,797

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

See travel insights to Knock from

How to get the cheapest flight ticket from San Francisco to Knock

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 airline that flies from San Francisco to Knock Intl?

British Airways is the most popular carrier operating from San Francisco to Knock Intl

When to book flights from San Francisco to Knock

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Knock according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Francisco to Knock (SFO to NOC) flight deals and tips

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

Fastest flight time

18h 11m

Direct flights

None
The fastest flight from San Francisco to Knock takes 18h 11m
There are no direct flights from San Francisco to Knock. There are no popular flight routes from San Francisco to Knock.
Search flight deals

Frequently asked questions about flying from San Francisco to Knock

  • How far is San Francisco to Knock Intl by plane?

    Knock Intl is 8005.3 km away from San Francisco. In terms of flight time, this usually takes a little over 18h 11m.

  • When did momondo last update prices for flights from San Francisco Airport to Knock Intl Airport?

    Prices for flights from San Francisco Airport to Knock Intl Airport were last updated today.

  • How old do you have to be to fly from San Francisco Airport to Knock Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Knock Intl Airport.

  • What documentation or ID do you need to fly to Knock Intl Airport?

    The necessary travel and health documents for your Knock Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Knock?

Book flights to Knock if you plan to visit one of these locations
Sligo
Westport
Carrick-on-Shannon
Belmullet

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Knock?

Finding the right flight to Knock from San Francisco 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 Knock quick and easy, saving you time and money.

Can I find flights from San Francisco to Knock with flexible booking policies on momondo?

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

How can momondo help me find flights from San Francisco to Knock?

Once all potential San Francisco to Knock flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Knock, momondo offers a useful price alert feature which will track prices for flights to Knock from San Francisco and alert you when they change.

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