Cheap Flights from San Francisco International to Nantucket

Compare San Francisco International to Nantucket flight deals

Find the cheapest month or even day of the year to fly to Nantucket

Book the best Nantucket fare with no extra fees

Flight deals from San Francisco International to Nantucket

Looking for a cheap last-minute deal or the best return flight from San Francisco International Airport to Nantucket Airport? If you want to travel next month, return fares start from R 6,158. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Francisco International to Nantucket

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Nantucket flights are currently cheapest in August.

San Francisco International to Nantucket: Alternative routes

Compare routes from San Francisco International to Nantucket below. You may find an airport to fly into that's cheaper, faster, or easier than Nantucket.

San Francisco to Nantucket: Flight information

The things to know before you go.
Cheapest flight foundR 4,120
Cheapest month to flyAugust

Finding cheap flights from San Francisco International to Nantucket: Frequently asked questions

The best price we found for a return flight from San Francisco International to Nantucket is R 5,794. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Francisco International to Nantucket. But we found flights with one or more stops from R 5,794.
As of July 2026, there are no flights flying from San Francisco International to Nantucket.
The cheapest month to fly from San Francisco International to Nantucket is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Nantucket Airport on Sunday, 30 August 2026.
No airlines currently offer direct flights between San Francisco International Airport and Nantucket Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Nantucket but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Nantucket is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines offers the cheapest flight tickets to Nantucket.

Flying from San Francisco International Airport (SFO) to Nantucket Airport (ACK): what you need to know

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Show up at the airport on time to board your SFO to ACK flight.

  • Be prepared for bigger queues during popular months such as July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure will give you ample time for security and boarding.

  • If you'd like to split up your journey, just uncheck 'Direct flights only' when searching for your ticket from San Francisco International Airport to Nantucket Airport. Here are the most popular stopovers between SFO and ACK:

    • Chicago O'Hare International Airport

    • Charlotte Douglas Airport

    • Boston Logan International Airport

How to find the cheapest flights from San Francisco International Airport (SFO) to Nantucket Airport (ACK)

  • Right now, R 4,120 is the cheapest price we've seen for a one-way San Francisco International Airport to Nantucket Airport flight. The best price for a return plane ticket is R 5,794. Keep in mind that fares could change due to demand at the time of booking.

  • To get your hands on cheap tickets from SFO to ACK, book in advance. Airlines tend to offer their best fares when flights are first released.

  • Finding cheap flights from San Francisco International Airport to Nantucket Airport is easy if you can be flexible with your travel dates. Use the 'Whole month' search function to see the lowest fares throughout the month and score a great deal.

  • Picking up cheap flights from SFO to ACK is a cinch with Price Alerts. All you need to do is set up one of these automatic alerts and we'll let you know when a new discounted fare appears.

  • Secure the perfect flight for you with the help of the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from San Francisco International Airport to Nantucket Airport, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

Handy information about San Francisco International Airport (SFO)

  • When it comes to San Francisco International Airport's on-time performance, data shows 78% of flights complete their journey on time.

  • Central San Francisco to San Francisco International Airport is approximately 21 kilometres. Depending on traffic, it'll take you about 25 minutes to get there if you're catching a taxi, ride-sharing or driving.

  • Planning to catch public transport? Expect a journey time of around 35 minutes.

  • Catching an early flight from San Francisco International Airport to Nantucket Airport? Avoid the stress of rushing to the terminal (and enjoy a little extra shut-eye) by picking one of these hotels close to SFO:

Arriving at Nantucket Airport (ACK)

  • If you're coming in on a late San Francisco International Airport to Nantucket Airport flight, nothing tops the convenience of staying close to the terminal. Grab your luggage from the carousel and then be resting shortly after at one of these accommodation options near ACK:

  • Grab a Nantucket Airport rental car and discover parts of Nantucket that most visitors tend to miss. Check out the deals from Hertz.

  • To lock in the best rate, book your vehicle from Nantucket Airport a few weeks in advance. Prices typically increase closer to your day of departure.

When to fly to Nantucket Airport (ACK)

  • It's time to choose your trip dates for your flight from San Francisco International Airport to Nantucket Airport. July is the most popular month to head to Nantucket. If you'd like a more laid-back vibe, go in January.

  • The warmest month in Nantucket is August, with the temperature ranging between 18ºC (64ºF) and 23ºC (73ºF). Book your flights from San Francisco International Airport to Nantucket Airport in this month if this is the type of weather you like.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from SFO to ACK in February. Temperatures average between -5ºC (23ºF) and 7ºC (45ºF) then.

Explore more of the United States

  • You've done Nantucket, now it's time to discover more of the United States. Journey about 338 kilometres west to New York to tick off its top sights. From Central Park to Statue of Liberty and Metropolitan Museum of Art, you've got a jam-packed schedule ahead.

  • If you're interested in discovering another corner of the United States, head for Philadelphia, about 451 kilometres west of Nantucket. Independence Hall, Liberty Bell and Philadelphia Museum of Art are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.