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Cheap flights from San Francisco to Knock from €817

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Knock departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Aer Lingus Logo
17:40 - 12:35
SFO
-
NOC
34h 55m
2 stops
Aer Lingus Logo
13:05 - 15:55
NOC
-
SFO
34h 50m
2 stops
€817Aer Lingus
Tue, 1 Sep - Sat, 12 Sep
Aer Lingus Logo
17:40 - 12:35
SFO
-
NOC
34h 55m
2 stops
Aer Lingus Logo
13:05 - 15:55
NOC
-
SFO
34h 50m
2 stops
€831Aer Lingus
Sat, 23 May - Mon, 17 Aug
Multiple Airlines Logo
17:40 - 12:35
SFO
-
NOC
34h 55m
2 stops
Multiple Airlines Logo
13:05 - 13:50
NOC
-
SFO
32h 45m
1 stop
€882Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
British Airways Logo
19:30 - 12:35
SFO
-
NOC
33h 05m
1 stop
British Airways Logo
13:05 - 13:50
NOC
-
SFO
32h 45m
1 stop
€884British Airways
Sun, 24 May - Tue, 18 Aug
British Airways Logo
06:15 - 12:35
SFO
-
NOC
22h 20m
2 stops
British Airways Logo
13:05 - 13:50
NOC
-
SFO
32h 45m
1 stop
€888British Airways
Wed, 20 May - Wed, 19 Aug
British Airways Logo
19:30 - 12:35
SFO
-
NOC
33h 05m
1 stop
British Airways Logo
13:05 - 08:39
NOC
-
SFO
27h 34m
2 stops
€894British Airways
Sun, 24 May - Thu, 20 Aug
British Airways Logo
06:15 - 12:35
SFO
-
NOC
22h 20m
2 stops
British Airways Logo
13:05 - 17:53
NOC
-
SFO
36h 48m
2 stops
€897British Airways
Wed, 20 May - Tue, 18 Aug
British Airways Logo
19:30 - 12:35
SFO
-
NOC
33h 05m
1 stop
British Airways Logo
13:05 - 23:44
NOC
-
SFO
18h 39m
2 stops
€908British Airways
Sun, 24 May - Fri, 14 Aug
Multiple Airlines Logo
19:30 - 12:35
SFO
-
NOC
57h 05m
2 stops
Multiple Airlines Logo
13:05 - 09:09
NOC
-
SFO
28h 04m
2 stops
€910Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
British Airways Logo
06:15 - 12:35
SFO
-
NOC
22h 20m
2 stops
British Airways Logo
13:05 - 23:44
NOC
-
SFO
18h 39m
2 stops
€912British Airways
Wed, 20 May - Fri, 14 Aug

Aer Lingus flights from San Francisco to Knock

Our best Aer Lingus deals on San Francisco to Knock flight tickets
Aer Lingus
1 Sept
SFO17:40San Francisco
34h 55m
2 stops
NOC12:35Knock Intl
12 Sept
NOC13:05Knock Intl
34h 50m
2 stops
SFO15:55San Francisco
€817
Aer Lingus
23 May
SFO17:40San Francisco
34h 55m
2 stops
NOC12:35Knock Intl
17 Aug
NOC13:05Knock Intl
34h 50m
2 stops
SFO15:55San Francisco
€831
Aer Lingus
23 May
SFO19:30San Francisco
33h 05m
1 stop
NOC12:35Knock Intl
15 Aug
NOC13:05Knock Intl
32h 45m
1 stop
SFO13:50San Francisco
€1,410

British Airways flights from San Francisco to Knock

Our best British Airways deals on San Francisco to Knock flight tickets
British Airways
24 May
SFO19:30San Francisco
33h 05m
1 stop
NOC12:35Knock Intl
19 Aug
NOC13:05Knock Intl
32h 45m
1 stop
SFO13:50San Francisco
€884
British Airways
20 May
SFO06:15San Francisco
22h 20m
2 stops
NOC12:35Knock Intl
19 Aug
NOC13:05Knock Intl
32h 45m
1 stop
SFO13:50San Francisco
€888
British Airways
24 May
SFO19:30San Francisco
33h 05m
1 stop
NOC12:35Knock Intl
20 Aug
NOC13:05Knock Intl
27h 34m
2 stops
SFO08:39San Francisco
€894

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 19 March 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

Tue 1/9

17:40-12:35

2 stops34h 55m

Knock Intl

Sat 12/9

13:05-15:55

2 stops34h 50m

€817

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sat 23/5

17:40-12:35

2 stops34h 55m

Knock Intl

Mon 17/8

13:05-15:55

2 stops34h 50m

€831

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Tue 1/9

17:40-12:35

2 stops34h 55m

Knock Intl

Sat 12/9

13:05-13:50

1 stop32h 45m

€882

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 24/5

19:30-12:35

1 stop33h 05m

Knock Intl

Tue 18/8

13:05-13:50

1 stop32h 45m

€884

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Wed 20/5

06:15-12:35

2 stops22h 20m

Knock Intl

Wed 19/8

13:05-13:50

1 stop32h 45m

€888

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 24/5

19:30-12:35

1 stop33h 05m

Knock Intl

Thu 20/8

13:05-08:39

2 stops27h 34m

€894

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Wed 20/5

06:15-12:35

2 stops22h 20m

Knock Intl

Tue 18/8

13:05-17:53

2 stops36h 48m

€897

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 24/5

19:30-12:35

1 stop33h 05m

Knock Intl

Fri 14/8

13:05-23:44

2 stops18h 39m

€908

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Wed 12/8

19:30-12:35

2 stops57h 05m

Knock Intl

Wed 19/8

13:05-09:09

2 stops28h 04m

€910
Fastest return journey

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Wed 20/5

06:15-12:35

2 stops22h 20m

Knock Intl

Fri 14/8

13:05-23:44

2 stops18h 39m

€912

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

17h 53m

Direct flights

None
The fastest flight from San Francisco to Knock takes 17h 53m
There are no direct flights from San Francisco to Knock. There are no popular flight routes from San Francisco to Knock.
Search flight deals

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

    Knock Intl is 8004.9 km away from San Francisco. In terms of flight time, this usually takes a little over 17h 53m.

  • 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.

  • How do I get Price Alerts for flights from San Francisco to Knock?

    Confirm your travel details to search for the latest offers for flights from San Francisco to Knock. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from San Francisco to Knock with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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.

An easier way to manage your Knock trip

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