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Cheap flights from San Francisco to Knock from $707

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from San Francisco to Knock

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:00 am - 12:35 pm-
19h 35m
Multiple Airlines Logo
1:05 pm - 11:45 am-
30h 40m
$1,059Multiple Airlines
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
8:35 am - 12:35 pm-
20h 00m
Multiple Airlines Logo
1:05 pm - 11:28 pm-
42h 23m
$1,222Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Aer Lingus Logo
7:30 pm - 12:35 pm-
33h 05m
Aer Lingus Logo
1:05 pm - 3:55 pm-
34h 50m
$1,240Aer Lingus
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
6:40 am - 5:20 pm-
26h 40m
Multiple Airlines Logo
1:05 pm - 2:05 pm-
33h 00m
$1,242Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
5:45 pm - 12:35 pm-
34h 50m
Multiple Airlines Logo
1:05 pm - 3:45 pm-
34h 40m
$1,265Multiple Airlines
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
8:10 am - 12:35 pm-
20h 25m
Multiple Airlines Logo
1:05 pm - 12:34 pm-
31h 29m
$1,280Multiple Airlines
Sat, Aug 15 - Sun, Sep 13
Multiple Airlines Logo
8:10 am - 12:35 pm-
20h 25m
Multiple Airlines Logo
1:05 pm - 12:34 pm-
31h 29m
$1,300Multiple Airlines
Sat, Aug 15 - Sun, Sep 13
Multiple Airlines Logo
12:50 pm - 12:35 pm-
15h 45m
Multiple Airlines Logo
1:05 pm - 4:00 pm-
34h 55m
$1,301Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
10:05 am - 12:35 pm-
18h 30m
Multiple Airlines Logo
1:05 pm - 1:35 pm-
32h 30m
$1,306Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
11:10 am - 5:15 pm-
22h 05m
Multiple Airlines Logo
1:05 pm - 4:15 pm-
35h 10m
$1,340Multiple Airlines
Mon, Sep 14 - Mon, Sep 21

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Aer Lingus flights from San Francisco to Knock

Our best Aer Lingus deals on San Francisco to Knock flight tickets
Aer Lingus
Sep 14
SFO7:30 pmSan Francisco
33h 05m
1 stop
NOC12:35 pmKnock Intl
Sep 21
NOC1:05 pmKnock Intl
34h 50m
2 stops
SFO3:55 pmSan Francisco
$1,240
Aer Lingus
Dec 16
SFO6:30 amSan Francisco
21h 55m
2 stops
NOC12:25 pmKnock Intl
Jan 3
NOC1:00 pmKnock Intl
34h 35m
2 stops
SFO3:35 pmSan Francisco
$1,403
Aer Lingus
Dec 16
SFO6:30 amSan Francisco
21h 55m
2 stops
NOC12:25 pmKnock Intl
Jan 3
NOC1:00 pmKnock Intl
33h 55m
1 stop
SFO2:55 pmSan Francisco
$1,478

momondo 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, momondo users made 832,500 searches. Data last updated August 5, 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 round-trip
Quickest round-trip

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Mon 9/14

9:00 am-12:35 pm

2 stops19h 35m

Knock Intl

Mon 9/21

1:05 pm-11:45 am

2 stops30h 40m

$1,059

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 9/13

8:35 am-12:35 pm

2 stops20h 00m

Knock Intl

Sun 9/20

1:05 pm-11:28 pm

2 stops42h 23m

$1,222

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Mon 9/14

7:30 pm-12:35 pm

1 stop33h 05m

Knock Intl

Mon 9/21

1:05 pm-3:55 pm

2 stops34h 50m

$1,240

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 9/13

6:40 am-5:20 pm

3 stops26h 40m

Knock Intl

Sun 9/20

1:05 pm-2:05 pm

2 stops33h 00m

$1,242

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Mon 9/14

5:45 pm-12:35 pm

1 stop34h 50m

Knock Intl

Mon 9/21

1:05 pm-3:45 pm

1 stop34h 40m

$1,265

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sat 8/15

8:10 am-12:35 pm

2 stops20h 25m

Knock Intl

Sun 9/13

1:05 pm-12:34 pm

2 stops31h 29m

$1,280

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sat 8/15

8:10 am-12:35 pm

2 stops20h 25m

Knock Intl

Sun 9/13

1:05 pm-12:34 pm

2 stops31h 29m

$1,300

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 9/13

12:50 pm-12:35 pm

1 stop15h 45m

Knock Intl

Sun 9/20

1:05 pm-4:00 pm

1 stop34h 55m

$1,301

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Sun 9/13

10:05 am-12:35 pm

2 stops18h 30m

Knock Intl

Sun 9/20

1:05 pm-1:35 pm

1 stop32h 30m

$1,306

San FranciscoKnock

SFO - NOC

SFONOC

San Francisco

Mon 9/14

11:10 am-5:15 pm

3 stops22h 05m

Knock Intl

Mon 9/21

1:05 pm-4:15 pm

2 stops35h 10m

$1,340

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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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

What airlines fly to Knock?

United Airlines, American Airlines and British Airways are the top three most popular airlines that fly to Knock from San Francisco according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Knock. Keep in mind that there are 5 different airlines that fly to Knock on a routine basis, so you have a few additional options to choose from.

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 round-trip 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

35h 00m

Direct flights

None
The fastest flight from San Francisco to Knock takes 35h 00m
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?

    The distance between San Francisco and Knock Intl is about 4974.3 mi. By plane, this route typically takes 35h 00m.

  • 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 are refreshed on a daily basis.

  • 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 required travel and health documents for your Knock Intl Airport 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 Knock Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Knock?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to Knock. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Knock from San Francisco which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for San Francisco to Knock flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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