Find Cheap Flights from Islip Long Island to San Francisco (ISP - SFO)

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Looking for a cheap flight? 25% of our users found flights on this route for $371 or less.

FAQs for Booking Islip Long Island to San Francisco Flights

How long does a flight from Islip Long Island to San Francisco take?
An average nonstop flight takes 8h 27m, covering a distance of 2613 miles.
Which airlines provide the cheapest flights from Islip Long Island to San Francisco?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($267), Multiple Airlines ($315) and American Airlines ($332).
Do I need a passport to fly between Islip Long Island and San Francisco?
No.
What’s the cheapest day of the week to fly Islip Long Island to San Francisco?
For Islip Long Island to San Francisco, Monday is the cheapest day to fly on average and Friday is the most expensive. Flying from San Francisco back to Islip Long Island, the best deals are generally found on Tuesday, with Friday being the most expensive.

Book cheap flights from Islip Long Island to San Francisco (round-trip)

Airports
Origin
Islip
$267
only
$267
Destination
San Francisco
$267
only
$267
Mon, Apr 9
ISP
SFO
13h 59m
Fri, Apr 13
SFO
ISP
18h 36m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

ORD
DEN
Mediocre 2.0

The flight was delayed

LAS
BNA
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Thu, Apr 5
ISP
SFO
11h 27m
Fri, Apr 13
SFO
ISP
18h 36m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Mar 14
ISP
SFO
8h 27m
Tue, Mar 20
SFO
ISP
8h 04m
Trip: 7 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
DFW
GRR
Excellent 9.0

Everything worked the way it was supposed to. Bag transfer through customs and transfer to domestic was easy.

Snacks and food in general on US operated airlines is generally sad. American Airlines should learn from Qantas about food quality and service.

ORD
LAX
Okay 4.0

Packed like sardines; the seats are getting narrower and the seat pockets are ridiculously small.

BOS
DFW
Excellent 10.0

Everything is excellent!!

CLT
CLE
Okay 5.2

Plane was delayed 1.5 hours. Rental Car reservation was at a location 30 miles from the airport, not the airport rental location. Had to transfer reservations which cost an extra $30...

ORD
DFW
Excellent 8.6

The customer service/ticket agent skipped her lunch break to get us on the plane. She went way beyond the call of duty. We will be eternally grateful.

Mon, Apr 16
ISP
SFO
13h 59m
Tue, Apr 24
SFO
ISP
18h 36m
Trip: 9 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

PHX
MKE
Okay 4.0

Nothing

Everything

AUS
PHX
Good 6.0

Flight was delayed

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

ORD
DEN
Mediocre 2.0

The flight was delayed

Wed, May 2
ISP
SFO
13h 53m
Tue, May 8
SFO
ISP
18h 43m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

PHX
MKE
Okay 4.0

Nothing

Everything

AUS
PHX
Good 6.0

Flight was delayed

ORD
DEN
Mediocre 2.0

The flight was delayed

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

Wed, Apr 25
ISP
SFO
13h 59m
Sun, Apr 29
SFO
ISP
18h 36m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

PHX
MKE
Okay 4.0

Nothing

Everything

DEN
ORD
Excellent 10.0

We got there ahead of schedule

Wed, May 9
ISP
SFO
13h 53m
Mon, May 14
SFO
ISP
19h 42m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
LAS
Okay 5.3

It was clean, and the crew did great!

Way off schedule, way to tight of space, no way to sleep being such a late flight! As far as a beverage, they were out of everything!! Nice air line for quick trips,but to fly for 4 hrs at night from leaving at 12;00am, just impossible to sleep or really relax.

AUS
PHX
Good 6.0

Flight was delayed

MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Wed, Mar 21
ISP
SFO
8h 27m
Sat, Mar 24
SFO
ISP
8h 04m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
LAX
Okay 4.0

Packed like sardines; the seats are getting narrower and the seat pockets are ridiculously small.

LAX
AKL
Okay 4.0

American wins tge coach torture contest!

BWI
ORD
Excellent 8.6

Nothing special

BWI check-in crew is not friendly, not related to Japan Airline.

DFW
GRR
Excellent 9.0

Everything worked the way it was supposed to. Bag transfer through customs and transfer to domestic was easy.

Snacks and food in general on US operated airlines is generally sad. American Airlines should learn from Qantas about food quality and service.

LAX
MEX
Excellent 8.0

American flight attendant service

Sat, Jun 16
ISP
SFO
14h 12m
Sun, Jul 1
SFO
ISP
8h 37m
Trip: 16 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 8
ISP
SFO
20h 56m
Mon, May 14
SFO
ISP
19h 42m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

ORD
DEN
Mediocre 2.0

The flight was delayed

AUS
PHX
Good 6.0

Flight was delayed

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

DEN
ORD
Excellent 10.0

We got there ahead of schedule

Fri, Mar 9
ISP
SFO
8h 27m
Wed, Mar 14
SFO
ISP
8h 04m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
LAX
AKL
Okay 4.0

American wins tge coach torture contest!

CLT
CLE
Okay 5.2

Plane was delayed 1.5 hours. Rental Car reservation was at a location 30 miles from the airport, not the airport rental location. Had to transfer reservations which cost an extra $30...

LAX
MIA
Okay 4.0

The low fare was the best part of the flight, but I later found that it came at a cost!!!!

First of all the Crew was rude and their lack of patience was obvious, the flight was delayed and was no fault of any of the passengers yet we were made to feel as if it was our ( passengers) fault. Secondly, the air was turned down, I guess to conserve fuel, and the plane was unbearably hot, And at no time was food offered for purchase or even a beverage service. I have flow AA for 20+ years and this was the FURST flight I have ever experienced. Sadly I believe it will be my last!!!!

DFW
GRR
Excellent 9.0

Everything worked the way it was supposed to. Bag transfer through customs and transfer to domestic was easy.

Snacks and food in general on US operated airlines is generally sad. American Airlines should learn from Qantas about food quality and service.

IND
LAX
Excellent 10.0

The staff

The snack selection and lack of entertainment

Wed, Jun 6
ISP
SFO
13h 53m
Tue, Jun 12
SFO
ISP
18h 50m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Thu, May 10
ISP
SFO
20h 56m
Mon, May 14
SFO
ISP
19h 42m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

ORD
DEN
Mediocre 2.0

The flight was delayed

MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

Mon, Apr 9
ISP
SFO
13h 59m
Tue, Apr 10
SFO
ISP
18h 36m
Trip: 2 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
AUS
PHX
Good 6.0

Flight was delayed

MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

Wed, Jul 25
ISP
SFO
13h 37m
Tue, Jul 31
SFO
ISP
18h 36m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
ORD
Excellent 10.0

We got there ahead of schedule

LAS
BNA
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

AUS
PHX
Good 6.0

Flight was delayed

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

Wed, Jun 27
ISP
SFO
13h 53m
Mon, Jul 9
SFO
ISP
19h 33m
Trip: 13 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

PHX
MKE
Okay 4.0

Nothing

Everything

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

Wed, Jul 4
ISP
SFO
13h 37m
Wed, Jul 11
SFO
ISP
19h 33m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

PHX
MKE
Okay 4.0

Nothing

Everything

MKE
LAS
Okay 5.3

It was clean, and the crew did great!

Way off schedule, way to tight of space, no way to sleep being such a late flight! As far as a beverage, they were out of everything!! Nice air line for quick trips,but to fly for 4 hrs at night from leaving at 12;00am, just impossible to sleep or really relax.

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Wed, Aug 1
ISP
SFO
20h 53m
Mon, Aug 6
SFO
ISP
26h 55m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

DEN
ORD
Excellent 10.0

We got there ahead of schedule

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

MKE
LAS
Okay 5.3

It was clean, and the crew did great!

Way off schedule, way to tight of space, no way to sleep being such a late flight! As far as a beverage, they were out of everything!! Nice air line for quick trips,but to fly for 4 hrs at night from leaving at 12;00am, just impossible to sleep or really relax.

MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

Wed, Feb 28
ISP
SFO
11h 15m
Fri, Mar 2
SFO
ISP
11h 03m
Trip: 3 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

DEN
LAS
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

AUS
PHX
Good 6.0

Flight was delayed

ORD
DEN
Mediocre 2.0

The flight was delayed

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

Fri, Feb 23
ISP
SFO
21h 01m
Thu, Mar 1
SFO
ISP
11h 03m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

DEN
ONT
Okay 4.0

The flight itself was fine

I used to love frontier but now everything from baggage policies to checking in feel like a huge hassle

MKE
LAS
Okay 5.3

It was clean, and the crew did great!

Way off schedule, way to tight of space, no way to sleep being such a late flight! As far as a beverage, they were out of everything!! Nice air line for quick trips,but to fly for 4 hrs at night from leaving at 12;00am, just impossible to sleep or really relax.

ORD
DEN
Mediocre 2.0

The flight was delayed

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Islip Long Island to San Francisco Flight Information

Flights Arrive in San Francisco
Flights Depart from Islip Long Island
Flight Price $267
Distance 2613 miles
Airlines Frontier, American Airlines
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.