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Cheap flights from San Francisco to Donegal from $959

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Donegal departing on 2/15. 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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Find the cheapest flights from San Francisco to Donegal

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
8:40 pm - 8:00 pm
SFO
-
CFN
39h 20m2 stops
British Airways Logo
7:55 am - 6:45 pm
CFN
-
SFO
18h 50m2 stops
$959British Airways
Sun, Feb 15 - Thu, Feb 26
Aer Lingus Logo
6:20 pm - 8:00 pm
SFO
-
CFN
17h 40m1 stop
Aer Lingus Logo
2:30 pm - 3:35 pm
CFN
-
SFO
33h 05m1 stop
$974Aer Lingus
Sun, Feb 15 - Thu, Feb 26
British Airways Logo
5:30 pm - 8:00 pm
SFO
-
CFN
18h 30m2 stops
British Airways Logo
7:55 am - 6:45 pm
CFN
-
SFO
18h 50m2 stops
$1,009British Airways
Thu, Feb 12 - Thu, Feb 26
British Airways Logo
5:30 pm - 12:35 pm
SFO
-
CFN
35h 05m2 stops
British Airways Logo
7:55 am - 6:45 pm
CFN
-
SFO
18h 50m2 stops
$1,016British Airways
Fri, Feb 13 - Thu, Feb 26
Aer Lingus Logo
5:20 pm - 2:00 pm
SFO
-
CFN
12h 40m1 stop
Aer Lingus Logo
2:30 pm - 3:35 pm
CFN
-
SFO
33h 05m1 stop
$1,024Aer Lingus
Fri, Feb 13 - Thu, Feb 26
Multiple Airlines Logo
6:20 pm - 8:00 pm
SFO
-
CFN
17h 40m1 stop
Multiple Airlines Logo
7:55 am - 10:01 pm
CFN
-
SFO
22h 06m2 stops
$1,151Multiple Airlines
Sun, Feb 15 - Thu, Feb 26
British Airways Logo
8:40 pm - 8:00 pm
SFO
-
CFN
39h 20m2 stops
British Airways Logo
2:30 pm - 3:00 pm
CFN
-
SFO
32h 30m2 stops
$1,159British Airways
Sun, Feb 1 - Thu, Feb 5
Multiple Airlines Logo
7:55 pm - 12:35 pm
SFO
-
CFN
32h 40m2 stops
Multiple Airlines Logo
2:30 pm - 3:35 pm
CFN
-
SFO
33h 05m1 stop
$1,176Multiple Airlines
Fri, Feb 13 - Thu, Feb 26
Multiple Airlines Logo
5:20 pm - 8:00 pm
SFO
-
CFN
18h 40m1 stop
Multiple Airlines Logo
7:55 am - 10:01 pm
CFN
-
SFO
22h 06m2 stops
$1,184Multiple Airlines
Sat, Feb 14 - Thu, Feb 26
Multiple Airlines Logo
6:20 pm - 8:00 pm
SFO
-
CFN
17h 40m1 stop
Multiple Airlines Logo
7:15 pm - 3:35 pm
CFN
-
SFO
28h 20m2 stops
$1,190Multiple Airlines
Sun, Feb 15 - Sun, Mar 1

British Airways flights from San Francisco to Donegal

Our best British Airways deals on San Francisco to Donegal flight tickets
British Airways
Feb 15
SFO8:40 pmSan Francisco
39h 20m
2 stops
CFN8:00 pmDonegal
Feb 26
CFN7:55 amDonegal
18h 50m
2 stops
SFO6:45 pmSan Francisco
$959
Find similar
British Airways
Feb 12
SFO5:30 pmSan Francisco
18h 30m
2 stops
CFN8:00 pmDonegal
Feb 26
CFN7:55 amDonegal
18h 50m
2 stops
SFO6:45 pmSan Francisco
$1,009
Find similar
British Airways
Feb 13
SFO5:30 pmSan Francisco
35h 05m
2 stops
CFN12:35 pmDonegal
Feb 26
CFN7:55 amDonegal
18h 50m
2 stops
SFO6:45 pmSan Francisco
$1,016
Find similar

Aer Lingus flights from San Francisco to Donegal

Our best Aer Lingus deals on San Francisco to Donegal flight tickets
Aer Lingus
Feb 15
SFO6:20 pmSan Francisco
17h 40m
1 stop
CFN8:00 pmDonegal
Feb 26
CFN2:30 pmDonegal
33h 05m
1 stop
SFO3:35 pmSan Francisco
$974
Find similar
Aer Lingus
Feb 13
SFO5:20 pmSan Francisco
12h 40m
1 stop
CFN2:00 pmDonegal
Feb 26
CFN2:30 pmDonegal
33h 05m
1 stop
SFO3:35 pmSan Francisco
$1,024
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Donegal 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 December 16, 2025.
Use the filters below to find and compare flights from San Francisco to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sun 2/15

8:40 pm-8:00 pm

2 stops39h 20m

Donegal

Thu 2/26

7:55 am-6:45 pm

2 stops18h 50m

$959

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sun 2/15

6:20 pm-8:00 pm

1 stop17h 40m

Donegal

Thu 2/26

2:30 pm-3:35 pm

1 stop33h 05m

$974

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Thu 2/12

5:30 pm-8:00 pm

2 stops18h 30m

Donegal

Thu 2/26

7:55 am-6:45 pm

2 stops18h 50m

$1,009

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Fri 2/13

5:30 pm-12:35 pm

2 stops35h 05m

Donegal

Thu 2/26

7:55 am-6:45 pm

2 stops18h 50m

$1,016

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Fri 2/13

5:20 pm-2:00 pm

1 stop12h 40m

Donegal

Thu 2/26

2:30 pm-3:35 pm

1 stop33h 05m

$1,024

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sun 2/15

6:20 pm-8:00 pm

1 stop17h 40m

Donegal

Thu 2/26

7:55 am-10:01 pm

2 stops22h 06m

$1,151

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sun 2/1

8:40 pm-8:00 pm

2 stops39h 20m

Donegal

Thu 2/5

2:30 pm-3:00 pm

2 stops32h 30m

$1,159

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Fri 2/13

7:55 pm-12:35 pm

2 stops32h 40m

Donegal

Thu 2/26

2:30 pm-3:35 pm

1 stop33h 05m

$1,176

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sat 2/14

5:20 pm-8:00 pm

1 stop18h 40m

Donegal

Thu 2/26

7:55 am-10:01 pm

2 stops22h 06m

$1,184

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sun 2/15

6:20 pm-8:00 pm

1 stop17h 40m

Donegal

Sun 3/1

7:15 pm-3:35 pm

2 stops28h 20m

$1,190

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from San Francisco to Donegal

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

Cheap San Francisco to Donegal (SFO to CFN) flight deals and tips

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

Fastest flight time

39h 20m

Direct flights

None
The fastest flight from San Francisco to Donegal takes 39h 20m
There are no direct flights from San Francisco to Donegal. There are no popular flight routes from San Francisco to Donegal.
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  • How far is San Francisco to Donegal by plane?

    The straight-line distance from San Francisco to Donegal is 4960.2 mi. Flights usually cover this in 39h 20m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from San Francisco Airport to Donegal Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Donegal Airport.

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

    The travel and health documents required for your trip to Donegal Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Donegal Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

    Price Alerts will notify you by email when the price for flights to Donegal from San Francisco decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

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

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for 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?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Donegal?

Book flights to Donegal if you plan to visit one of these locations
Letterkenny
Downings
Bundoran
Killybegs

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Donegal from San Francisco.

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

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

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

Once all potential San Francisco to Donegal 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 Donegal right now. Can momondo alert me if prices change?

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

An easier way to manage your Donegal trip

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