How long does it take to fly to Donegal?

Flight times vary depending on what airport in California you fly out of and what airport in Donegal you fly into. For example, flying from San Francisco to Knock takes 34h 55m on average. On the other hand, flying from San Jose to Knock takes 42h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

When did momondo last update prices for flights from California to Donegal Airport?

Prices for flights from California to Donegal Airport are updated daily.

How old do you have to be to fly from California to Donegal Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from California to Donegal Airport.

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

The travel and health documents you'll need for your trip to Donegal Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Donegal Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$1,224 Cheap Flights from California to Donegal in 2025/26

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0 bags

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Find the cheapest flights from California to Donegal

Round-trip

One-way

Last minute

Cheap round-trip flights

8:40 pm - 8:00 pmSFO-CFN

39h 20m2 stops

7:55 am - 6:45 pmCFN-SFO

18h 50m2 stops

$1,224British Airways

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Sat, Feb 21 - Wed, Feb 25

British Airways flights from California to Donegal

Our best British Airways deals on California to Donegal flight tickets

British Airways

Feb 21

SFO8:40 pmSan Francisco

39h 20m

2 stops

CFN8:00 pmDonegal

Feb 25

CFN7:55 amDonegal

18h 50m

2 stops

SFO6:45 pmSan Francisco

$1,224

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British Airways

Sep 18

SFO4:30 pmSan Francisco

19h 30m

2 stops

CFN8:00 pmDonegal

Sep 25

CFN7:55 amDonegal

17h 30m

2 stops

SFO5:25 pmSan Francisco

$4,420

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Fly from

Fly to

Route

Depart

Return

Price

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sat 2/21

8:40 pm-8:00 pm

2 stops39h 20m

Donegal

Wed 2/25

7:55 am-6:45 pm

2 stops18h 50m

$1,224

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from California to Donegal

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

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Other information

Can stopping save me money on California to Donegal flights?

You could potentially save up to 24% on your flight if you consider stops on a California to Donegal flight.

Cheap California to Donegal flight deals and tips

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

Direct flights	None

There are no direct flights from California to Donegal. There are no popular flight routes from California to Donegal.

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When did momondo last update prices for flights from California to Donegal Airport?
Prices for flights from California to Donegal Airport are updated daily.
How old do you have to be to fly from California to Donegal Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from California to Donegal Airport.
What documentation or ID do you need to fly to Donegal Airport?
The travel and health documents you'll need for your trip to Donegal Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Donegal Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Letterkenny

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Why use momondo?

Why should I use momondo to find a flight deal from California 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 California.

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

Yes. momondo allows you to filter the results for California to Donegal flights to just show those with flexible booking policies.

How can momondo help me find flights from California to Donegal?

momondo provides multiple filters to help you find the best flight to Donegal from California. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of California to Donegal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.