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Find Cheap Flights from Islip Long Island to Lambert-St Louis (ISP - STL)

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Islip Long Island to Lambert-St Louis Flight Information

Flights Arrive in Lambert-St Louis
Flights Depart from Islip Long Island
Flight Price $286
Distance 926 miles
Airlines American Airlines, Frontier

FAQs for Booking Islip Long Island to Lambert-St Louis Flights

How long does a flight from Islip Long Island to Lambert-St Louis take?
There are no direct flights for this route listed on KAYAK, the shortest multi-flight duration is 4h 44m.
Which airlines provide the cheapest flights from Islip Long Island to Lambert-St Louis?
In the past 3 days, the cheapest round-trip tickets were found on American Airlines ($286), Multiple Airlines ($372) and Frontier ($394).
Do I need a passport to fly between Islip Long Island and Lambert-St Louis?
No.
What’s the cheapest day of the week to fly Islip Long Island to Lambert-St Louis?
For Islip Long Island to Lambert-St Louis, Saturday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Lambert-St Louis back to Islip Long Island, the best deals are generally found on Wednesday, with Sunday being the most expensive.

Book cheap flights from Islip Long Island to Lambert-St Louis (round-trip)

Airports
Origin
Islip
$286
only
$286
Destination
St. Louis
$286
only
$286
Sat, Sep 1
ISP
Islip Long Island
STL
Lambert-St Louis
5h 15m
Wed, Sep 5
STL
Lambert-St Louis
ISP
Islip Long Island
6h 12m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LGA
ILM
Okay 5.6

Being delayed

CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

MSY
CLT
Excellent 9.0

organized boarding, quick and professional, flight crew was awesome, very comfortable flight, much appreciated no

No entertainment options on 2+ hour flight. Would have been nice to have.

BCN
JFK
Good 7.6

Even on a big ole B777 you better upgrade to bigger seats

LAX
ORD
Excellent 8.6

Pilot was informative.

Wed, Aug 22
ISP
Islip Long Island
STL
Lambert-St Louis
27h 23m
Wed, Aug 29
STL
Lambert-St Louis
ISP
Islip Long Island
14h 36m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Aug 26
ISP
Islip Long Island
STL
Lambert-St Louis
27h 43m
Thu, Aug 30
STL
Lambert-St Louis
ISP
Islip Long Island
14h 08m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
DCA
Excellent 8.6

No leg room

DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

MDT
MCO
Good 7.6

No info. Why it was delayed. No apologies. No free drinks, nothing. Delayed 2 hours.

PHL
SJU
Okay 5.6

We had an uneventful flight

Didn’t depart until 1055 pm. One hour later than scheduled

BNA
PHL
Good 6.0

They charged extra for everything. $45 for a checked bag, $3.00 for a can of soda or snacks and up from there.

Sat, Sep 1
ISP
Islip Long Island
STL
Lambert-St Louis
7h 15m
Wed, Sep 5
STL
Lambert-St Louis
ISP
Islip Long Island
6h 12m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

JAX
CLT
Good 6.0

Bumpy

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

LAX
ORD
Excellent 8.6

Pilot was informative.

Wed, Oct 17
ISP
Islip Long Island
STL
Lambert-St Louis
5h 08m
Sat, Oct 20
STL
Lambert-St Louis
ISP
Islip Long Island
6h 26m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

IAD
CLT
Excellent 10.0

The flight was on time

Tiny bathrooms

Wed, Aug 22
ISP
Islip Long Island
STL
Lambert-St Louis
27h 23m
Tue, Aug 28
STL
Lambert-St Louis
ISP
Islip Long Island
15h 08m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Sep 27
ISP
Islip Long Island
STL
Lambert-St Louis
27h 35m
Sun, Sep 30
STL
Lambert-St Louis
ISP
Islip Long Island
22h 05m
Trip: 4 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
LAS
Excellent 8.0

I got the same seats with my kids

That I missed my flight back to Denver and had to pay for a new flight for the next day

OKC
DEN
Excellent 9.5

I liked the fairs. plane was nice friendly crew we did well on the seat Lottery

My wife and I didn't get to sit together No drinks, peanuts

DEN
DCA
Excellent 8.6

No leg room

SAT
CLT
Excellent 10.0

Easy

MDT
MCO
Good 7.6

No info. Why it was delayed. No apologies. No free drinks, nothing. Delayed 2 hours.

Sat, Sep 1
ISP
Islip Long Island
STL
Lambert-St Louis
5h 15m
Tue, Sep 4
STL
Lambert-St Louis
ISP
Islip Long Island
6h 40m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LGA
ILM
Okay 5.6

Being delayed

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

LAX
ORD
Excellent 8.6

Pilot was informative.

ORD
MCO
Excellent 8.0

Great crew, on-time arrival, quick boarding

Crowded seats in the back of the plane, Low quality and bland snack options

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

Wed, Aug 22
ISP
Islip Long Island
STL
Lambert-St Louis
27h 23m
Mon, Aug 27
STL
Lambert-St Louis
ISP
Islip Long Island
14h 36m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Aug 22
ISP
Islip Long Island
STL
Lambert-St Louis
27h 23m
Sun, Aug 26
STL
Lambert-St Louis
ISP
Islip Long Island
32h 24m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Oct 25
ISP
Islip Long Island
STL
Lambert-St Louis
5h 08m
Sun, Oct 28
STL
Lambert-St Louis
ISP
Islip Long Island
4h 17m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LAX
SFO
Mediocre 2.0

Nothing. Just the pilot

Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund.

MSY
CLT
Excellent 9.0

organized boarding, quick and professional, flight crew was awesome, very comfortable flight, much appreciated no

No entertainment options on 2+ hour flight. Would have been nice to have.

LGA
ILM
Okay 5.6

Being delayed

LAX
ORD
Excellent 8.6

Pilot was informative.

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

Mon, Aug 20
ISP
Islip Long Island
STL
Lambert-St Louis
10h 44m
Fri, Aug 24
STL
Lambert-St Louis
ISP
Islip Long Island
13h 36m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Aug 23
ISP
Islip Long Island
STL
Lambert-St Louis
27h 13m
Sun, Aug 26
STL
Lambert-St Louis
ISP
Islip Long Island
28h 27m
Trip: 4 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

MDT
MCO
Good 7.6

No info. Why it was delayed. No apologies. No free drinks, nothing. Delayed 2 hours.

DEN
LAS
Excellent 8.0

I got the same seats with my kids

That I missed my flight back to Denver and had to pay for a new flight for the next day

SAT
CLT
Excellent 10.0

Easy

RDU
MSY
Good 6.3

Crew was great. Tickets great price

I was surprised to pay for carry on. Raise the price $40 and make it free. All drinks had a cost...$2.99 for juice? Crazy

Thu, Aug 30
ISP
Islip Long Island
STL
Lambert-St Louis
4h 44m
Wed, Sep 5
STL
Lambert-St Louis
ISP
Islip Long Island
6h 12m
Trip: 7 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

LGA
ILM
Okay 5.6

Being delayed

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

LAX
SFO
Mediocre 2.0

Nothing. Just the pilot

Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund.

Fri, Aug 31
ISP
Islip Long Island
STL
Lambert-St Louis
4h 44m
Wed, Sep 5
STL
Lambert-St Louis
ISP
Islip Long Island
6h 12m
Trip: 6 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
JAX
CLT
Good 6.0

Bumpy

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

ORD
MCO
Excellent 8.0

Great crew, on-time arrival, quick boarding

Crowded seats in the back of the plane, Low quality and bland snack options

LAX
SFO
Mediocre 2.0

Nothing. Just the pilot

Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund.

LAX
ORD
Excellent 8.6

Pilot was informative.

Thu, Aug 23
ISP
Islip Long Island
STL
Lambert-St Louis
27h 13m
Tue, Aug 28
STL
Lambert-St Louis
ISP
Islip Long Island
28h 27m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
CLT
Excellent 10.0

Easy

ATL
DEN
Good 6.0

Liked the smooth flight and newness of plane.

Narrow seating. I even upgraded to stretch seating but couldn’t tell! Cranberry juice was $2.99. But the BIG thing is that my luggage never made it onto the plane. Having to change all my plans due to lost luggage. Ugh

DEN
SLC
Excellent 8.0

I liked the fairs. plane was nice friendly crew

My wife and I didn't get to sit together No drinks, peanuts Seated next to a 400 pound women who had to used 1/4 of my seat

DEN
LAS
Excellent 8.0

I got the same seats with my kids

That I missed my flight back to Denver and had to pay for a new flight for the next day

RNO
DEN
Good 7.6

Very uncomfortable seats

Wed, Aug 29
ISP
Islip Long Island
STL
Lambert-St Louis
4h 44m
Wed, Sep 5
STL
Lambert-St Louis
ISP
Islip Long Island
4h 19m
Trip: 8 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LAX
ORD
Excellent 8.6

Pilot was informative.

LGA
ILM
Okay 5.6

Being delayed

JAX
CLT
Good 6.0

Bumpy

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

ORD
MCO
Excellent 8.0

Great crew, on-time arrival, quick boarding

Crowded seats in the back of the plane, Low quality and bland snack options

Thu, Aug 30
ISP
Islip Long Island
STL
Lambert-St Louis
4h 44m
Mon, Sep 3
STL
Lambert-St Louis
ISP
Islip Long Island
6h 40m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

IAD
CLT
Excellent 10.0

The flight was on time

Tiny bathrooms

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

LGA
ILM
Okay 5.6

Being delayed

Fri, Aug 31
ISP
Islip Long Island
STL
Lambert-St Louis
4h 44m
Mon, Sep 3
STL
Lambert-St Louis
ISP
Islip Long Island
6h 40m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LGA
ILM
Okay 5.6

Being delayed

LAX
ORD
Excellent 8.6

Pilot was informative.

IAD
CLT
Excellent 10.0

The flight was on time

Tiny bathrooms

LAX
SFO
Mediocre 2.0

Nothing. Just the pilot

Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund.

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

Sat, Sep 1
ISP
Islip Long Island
STL
Lambert-St Louis
5h 15m
Mon, Sep 3
STL
Lambert-St Louis
ISP
Islip Long Island
6h 40m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
MCO
Excellent 8.0

Great crew, on-time arrival, quick boarding

Crowded seats in the back of the plane, Low quality and bland snack options

LAX
ORD
Excellent 8.6

Pilot was informative.

CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

IAD
CLT
Excellent 10.0

The flight was on time

Tiny bathrooms

*
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