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$1,053+ Cheap flights from San Francisco (SFO) to Knock (NOC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — NOC
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from San Francisco to Knock

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Knock (NOC). 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 August 20, 2025.

Round-trip from

$1,053
(Ovago)
From San Francisco to Knock Intl
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Find flight deals from San Francisco to Knock

Cheapest flights from San Francisco to Knock
Explore the most affordable flight options available from San Francisco to Knock. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Ovago deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:40 pmSFO - NOC
2 stops34h 55mAer Lingus
Thu 9/251:05 pmNOC - SFO
2 stops34h 45mAer Lingus
Deal found 8/19$1,053
This Trip.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/181:05 pmSFO - NOC
1 stop15h 30mMultiple Airlines
Thu 9/251:05 pmNOC - SFO
1 stop32h 35mMultiple Airlines
Deal found 8/19$1,255

Cheapflights Fare Finder

 
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from San Francisco to Knock that are best for you.

Fly from

San Francisco

Fly to

Knock

Route

Depart

Return

Price

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Thu 9/18

5:40 pm-12:35 pm

2 stops34h 55m

Knock Intl

Thu 9/25

1:05 pm-3:50 pm

2 stops34h 45m

$1,053

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Thu 9/18

1:05 pm-12:35 pm

1 stop15h 30m

Knock Intl

Thu 9/25

1:05 pm-1:40 pm

1 stop32h 35m

$1,255

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Best time to book a flight from San Francisco to Knock

Have a flexible travel schedule? Discover the best time to fly to Knock from San Francisco with our price prediction graph.
Estimated round-trip 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.

Related info for your journey

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

  • How long is the flight from San Francisco to Knock?

    Aer Lingus can get you from San Francisco to Knock in just under 34h 55m. Your travel time can differ by up to . There are 4980 mi between San Francisco and Knock.

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

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

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

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

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

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

See more FAQs

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