Find Cheap Flights from Denver International to Islip Long Island (DEN - ISP)

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FAQs for Booking Denver International to Islip Long Island Flights

How long does a flight from Denver International to Islip Long Island take?
An average nonstop flight takes 5h 21m, covering a distance of 1655 miles.
Which airlines provide the cheapest flights from Denver International to Islip Long Island?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($179)
Do I need a passport to fly between Denver International and Islip Long Island?
No.
What’s the cheapest day of the week to fly Denver International to Islip Long Island?
For Denver International to Islip Long Island, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Islip Long Island back to Denver International, the best deals are generally found on Tuesday, with Wednesday being the most expensive.

Book cheap flights from Denver International to Islip Long Island (round-trip)

Airports
Origin
Denver
$179
only
$179
Destination
Islip
$179
only
$179
Tue, Apr 17
DEN
ISP
5h 41m
Wed, Apr 25
ISP
DEN
6h 13m
Trip: 9 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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

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 !!!

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

Wed, Apr 18
DEN
ISP
5h 32m
Wed, Apr 25
ISP
DEN
6h 13m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHX
DEN
Okay 4.0

Crew was friendly

Late departure

PHX
MKE
Okay 4.0

Nothing

Everything

DEN
ORD
Excellent 10.0

We got there ahead of schedule

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

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).

Tue, May 1
DEN
ISP
5h 21m
Tue, May 8
ISP
DEN
6h 06m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

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

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 !!!

PHX
DEN
Okay 4.0

Crew was friendly

Late departure

Wed, May 2
DEN
ISP
5h 56m
Tue, May 8
ISP
DEN
6h 06m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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 !!!

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 !!!

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

PHX
DEN
Okay 4.0

Crew was friendly

Late departure

DEN
ORD
Excellent 10.0

We got there ahead of schedule

Wed, Apr 11
DEN
ISP
5h 32m
Wed, Apr 18
ISP
DEN
13h 17m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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 !!!

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 !!!

MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

PHX
MKE
Okay 4.0

Nothing

Everything

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

Wed, May 2
DEN
ISP
5h 56m
Wed, May 9
ISP
DEN
12h 53m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHX
DEN
Okay 4.0

Crew was friendly

Late departure

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
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

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, May 2
DEN
ISP
5h 56m
Wed, May 30
ISP
DEN
6h 22m
Trip: 29 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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

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 !!!

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

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 !!!

Wed, May 16
DEN
ISP
5h 56m
Wed, May 23
ISP
DEN
6h 22m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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

PHX
DEN
Okay 4.0

Crew was friendly

Late departure

DEN
ORD
Excellent 10.0

We got there ahead of schedule

ORD
DEN
Mediocre 2.0

The flight was delayed

Wed, May 23
DEN
ISP
5h 56m
Wed, May 30
ISP
DEN
6h 22m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHX
DEN
Okay 4.0

Crew was friendly

Late departure

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 !!!

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
LAS
Mediocre 2.0

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

Wed, May 23
DEN
ISP
5h 56m
Wed, May 30
ISP
DEN
6h 22m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
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 !!!

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
DEN
Okay 4.0

Crew was friendly

Late departure

MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

ORD
DEN
Mediocre 2.0

The flight was delayed

Wed, May 23
DEN
ISP
5h 56m
Wed, May 30
ISP
DEN
6h 22m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHX
MKE
Okay 4.0

Nothing

Everything

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 !!!

ORD
DEN
Mediocre 2.0

The flight was delayed

MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

Wed, Jul 18
DEN
ISP
5h 34m
Wed, Aug 1
ISP
DEN
6h 00m
Trip: 15 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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).

ORD
DEN
Mediocre 2.0

The flight was delayed

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
DEN
Okay 4.0

Crew was friendly

Late departure

MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

Wed, Jul 18
DEN
ISP
5h 34m
Wed, Jul 25
ISP
DEN
12h 53m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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 !!!

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
LAS
Mediocre 2.0

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

Fri, Apr 27
DEN
ISP
5h 32m
Wed, May 2
ISP
DEN
6h 22m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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
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

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 !!!

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 !!!

Mon, Apr 9
DEN
ISP
5h 32m
Wed, Apr 11
ISP
DEN
6h 13m
Trip: 3 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

DEN
ORD
Excellent 10.0

We got there ahead of schedule

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
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

Tue, Apr 10
DEN
ISP
5h 41m
Mon, Apr 30
ISP
DEN
6h 13m
Trip: 21 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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).

MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

PHX
MKE
Okay 4.0

Nothing

Everything

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

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 !!!

Wed, Apr 11
DEN
ISP
5h 32m
Sun, Apr 15
ISP
DEN
5h 51m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHX
MKE
Okay 4.0

Nothing

Everything

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
ORD
Excellent 10.0

We got there ahead of schedule

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
DEN
Okay 4.0

Crew was friendly

Late departure

Tue, Apr 17
DEN
ISP
5h 41m
Sun, Apr 22
ISP
DEN
5h 51m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

DEN
ORD
Excellent 10.0

We got there ahead of schedule

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
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

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

Wed, Apr 18
DEN
ISP
5h 32m
Thu, Apr 26
ISP
DEN
5h 51m
Trip: 9 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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 !!!

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 !!!

LAS
MSN
Okay 5.6

Quick service

Expensive bags and small amount of room on the plane

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 !!!

MIA
CLE
Excellent 10.0

Funny flight crew who were very attentive and we made it back nearly 30 min early!

Nothing

Thu, Apr 19
DEN
ISP
5h 41m
Tue, Apr 24
ISP
DEN
5h 51m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33885 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 !!!

MIA
ATL
Mediocre 3.6

The boarding went quickly and was well organized

That the price to take a small carryon was just as expensive as taking a large suitcase, ended up having to pay and extra $80 r/t for a small bag and I just that's standard for them. There were no barf bags in any seats, believe me everyone around us was looking as the person next to me was getting sick on the landing because it was crazy rough. When we finally were able to get an attendant over she was as rude as could be, I'm sure this sick person next to me was sorry she "inconvenienced" the crew member, if they just put bags in the seats pockets like every other airline this wouldn't have been an issue. The seats were very uncomfortable with no padding and not able to tilt. The tray tables were nonfunctional, too small and did not extend to get anywhere close enough to reach you. The plane ride itself felt like we were on a old school bus on a gravel road. I had a round trip ticket with frontier and both trips were equally as bad. I will never travel with them again, Most of us weren't even sure if we were going to survive take off with out the plan breaking or something.

DEN
ORD
Excellent 10.0

We got there ahead of schedule

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

Denver International to Islip Long Island Flight Information

Flights Arrive in Islip Long Island
Flights Depart from Denver International
Flight Price $179
Distance 1655 miles
Airlines Frontier
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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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.