Find Cheap Flights from Seattle/Tacoma Intl to Denver International (SEA - DEN)

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Fri 11/24
Fri 12/1
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Good to Know

Low Season:
October
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
11%
expected price increase
Average Price:
$457
(avg. price over the last 2 weeks)
Good Deal:
$357
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Denver International

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $357 or less.
The cheapest flight from Seattle/Tacoma Intl to Denver International was found 72 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is October.
Morning departure is around 34% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Denver International Flights

How long does a flight from Seattle/Tacoma Intl to Denver International take?
An average nonstop flight takes 2h 37m, covering a distance of 1022 miles.
How many flights are there between Seattle/Tacoma Intl and Denver International?
There are 577 (nonstop) flights between Seattle/Tacoma Intl and Denver International per week, averaging 87 per day.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Denver International?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($74), Multiple Airlines ($89) and Delta ($137).
Do I need a passport to fly between Seattle/Tacoma Intl and Denver International?
No.
Which airlines fly most frequently between Seattle/Tacoma Intl and Denver International?
Alaska Airlines (16 times daily), United (12 times daily), Delta (10 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Seattle/Tacoma Intl to Denver International?
For Seattle/Tacoma Intl to Denver International, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Denver International back to Seattle/Tacoma Intl, the best deals are generally found on Thursday, with Monday being the most expensive.

Book cheap flights from Seattle/Tacoma Intl to Denver International (round-trip)

Airports
Origin
Seattle
$74
only
$74
Destination
Denver
$74
only
$74
Tue, Dec 12
SEA
DEN
2h 38m
Wed, Dec 13
DEN
SEA
3h 07m
Trip: 2 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

SEA
DEN
Mediocre 2.6

hmm

layover nothing was in order staff sucked yall kept moving gate yall could at lest give us a soda for the long rides

SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

Thu, Jan 18
SEA
DEN
2h 42m
Tue, Jan 23
DEN
SEA
3h 05m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Feb 9
SEA
DEN
2h 42m
Sun, Feb 11
DEN
SEA
2h 59m
Trip: 3 days
8.5ExcellentShow reviews
Overall 8.5 Excellent
Based on 10 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
JFK
CUN
Excellent 9.0

Entertainment and crew were great- comfortable seats, got to watch a couple of movies with headphones provided by Delta; forgot mine so I assumed I would be miserable thru the whole 4 hour flight. so glad I was wrong! Would definitely take another flight with Delta... looking into the frequent flyer program as we speak

SEA
DEN
Okay 5.5

I've only experienced delayed flights with Delta ... and this was no exception. It wasn't weather-related, nor a late flight delivering a plane - just no ground crew to service the plane between flights.

JFK
DTW
Excellent 10.0

I got off the flight at out side,but i forgot to carried my small bag .and then the Crew returned me the bag very soon.they were very kind,thank you very much.

SEA
DEN
Good 6.0

Seats were uncomfortable

PTY
ATL
Excellent 9.6

Crew was kind, entertainment and food were good

Seats are really tight

Tue, Jan 9
SEA
DEN
2h 38m
Tue, Jan 16
DEN
SEA
3h 05m
Trip: 8 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 3.3

Good connection, timely departure, pleasant crew

Budget airline ended up being much more expensive than my usual airlines. $40 per bag per leg of the trip, including carry-on?! My wife and I each had one carry on bag (normally free). Since we had a connection each direction that's $40 x 2 (people) x 4 flights = $320. That's ridiculous. Furthermore, these were the worst seating conditions on any airline I've ever seen (and I fly plenty). There is no headrest - the seats barely make it to my shoulders. And the seats themselves have no cushion whatsoever. The tray tables are laughably miniscule - much smaller than my laptop. There is no free snack/beverage or in-flight entertainment. There is no wifi. I will stick to United or Delta in the future.

SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Mediocre 2.6

hmm

layover nothing was in order staff sucked yall kept moving gate yall could at lest give us a soda for the long rides

Wed, Feb 7
SEA
DEN
2h 42m
Wed, Feb 14
DEN
SEA
3h 07m
Trip: 8 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

SEA
DEN
Mediocre 3.6

Crew was entertaining

Second most uncomfortable plane I've ever been on. Most uncomfortable was the frontier transfer directly after.

SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

Thu, Nov 30
SEA
DEN
2h 40m
Tue, Dec 5
DEN
SEA
3h 02m
Trip: 6 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

SEA
DEN
Excellent 8.0

Great flight attendants, amazing landing in Denver.

It was delayed. But I appreciated the meal voucher and voucher for future travel.

SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

Mon, Dec 11
SEA
DEN
2h 37m
Wed, Dec 13
DEN
SEA
3h 07m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jan 23
SEA
DEN
2h 38m
Tue, Jan 30
DEN
SEA
3h 05m
Trip: 8 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.6

hmm

layover nothing was in order staff sucked yall kept moving gate yall could at lest give us a soda for the long rides

SEA
DEN
Mediocre 3.6

Crew was entertaining

Second most uncomfortable plane I've ever been on. Most uncomfortable was the frontier transfer directly after.

SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Excellent 10.0

The whole experience was smooth:) I have learned how to travel by flight over the years. The less luggage the better most of my bad experiences are with T.S.A. theft and slow down.

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

Wed, Feb 7
SEA
DEN
2h 38m
Tue, Feb 13
DEN
SEA
3h 05m
Trip: 7 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

SEA
DEN
Excellent 10.0

The whole experience was smooth:) I have learned how to travel by flight over the years. The less luggage the better most of my bad experiences are with T.S.A. theft and slow down.

SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Mediocre 3.6

Crew was entertaining

Second most uncomfortable plane I've ever been on. Most uncomfortable was the frontier transfer directly after.

SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

Thu, Nov 30
SEA
DEN
2h 40m
Thu, Dec 7
DEN
SEA
3h 26m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 1
SEA
DEN
2h 41m
Tue, Mar 6
DEN
SEA
2h 58m
Trip: 6 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 3.6

Crew was entertaining

Second most uncomfortable plane I've ever been on. Most uncomfortable was the frontier transfer directly after.

SEA
DEN
Excellent 10.0

The whole experience was smooth:) I have learned how to travel by flight over the years. The less luggage the better most of my bad experiences are with T.S.A. theft and slow down.

SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

SEA
DEN
Mediocre 2.0

Nothing positive

I wasn't allowed to board because they closed the flight. I didn't realize you have to pay an additional fee to get your seat assignement to even get on the flight. I've been delayed a full 24hrs. That on top of $40 fee to have my carry on. At this point, my $175 plane ticket has ballooned to almost $245 which is more expensive than other flights where they treat you like a human being. F this company.

Mon, Apr 2
SEA
DEN
2h 43m
Fri, Apr 6
DEN
SEA
2h 58m
Trip: 5 days
8.5ExcellentShow reviews
Overall 8.5 Excellent
Based on 10 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
PBI
ATL
Good 6.0

On time; safe flight

Service from boarding to landing was impersonal. No headphones etc. Etc.

SEA
DEN
Good 6.0

Seats were uncomfortable

SEA
DEN
Excellent 8.0

free texting and entertainment!

our flight was delayed half an hour.

PHL
JFK
Excellent 9.0

We were probably in the air for 30 mins; great short flight. Plane wasn’t filled so had plenty of space.

LAX
HNL
Okay 5.0

The gentleman at the gate was super helpful and helped us check our bags at the gate.

Zero leg room. Zero arm room. The entertainment system did not function. No food for such a long flight unless you pay more then the food is actually worth.

Thu, Nov 30
SEA
DEN
2h 40m
Sun, Dec 3
DEN
SEA
3h 02m
Trip: 4 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Excellent 10.0

The whole experience was smooth:) I have learned how to travel by flight over the years. The less luggage the better most of my bad experiences are with T.S.A. theft and slow down.

SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

SEA
DEN
Mediocre 3.3

Good connection, timely departure, pleasant crew

Budget airline ended up being much more expensive than my usual airlines. $40 per bag per leg of the trip, including carry-on?! My wife and I each had one carry on bag (normally free). Since we had a connection each direction that's $40 x 2 (people) x 4 flights = $320. That's ridiculous. Furthermore, these were the worst seating conditions on any airline I've ever seen (and I fly plenty). There is no headrest - the seats barely make it to my shoulders. And the seats themselves have no cushion whatsoever. The tray tables are laughably miniscule - much smaller than my laptop. There is no free snack/beverage or in-flight entertainment. There is no wifi. I will stick to United or Delta in the future.

Tue, May 1
SEA
DEN
2h 42m
Sat, May 12
DEN
SEA
3h 00m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Dec 2
SEA
DEN
2h 40m
Sun, Dec 3
DEN
SEA
3h 02m
Trip: 2 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.6

hmm

layover nothing was in order staff sucked yall kept moving gate yall could at lest give us a soda for the long rides

SEA
DEN
Mediocre 3.3

Good connection, timely departure, pleasant crew

Budget airline ended up being much more expensive than my usual airlines. $40 per bag per leg of the trip, including carry-on?! My wife and I each had one carry on bag (normally free). Since we had a connection each direction that's $40 x 2 (people) x 4 flights = $320. That's ridiculous. Furthermore, these were the worst seating conditions on any airline I've ever seen (and I fly plenty). There is no headrest - the seats barely make it to my shoulders. And the seats themselves have no cushion whatsoever. The tray tables are laughably miniscule - much smaller than my laptop. There is no free snack/beverage or in-flight entertainment. There is no wifi. I will stick to United or Delta in the future.

SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

Thu, Dec 7
SEA
DEN
2h 40m
Mon, Dec 11
DEN
SEA
3h 07m
Trip: 5 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

SEA
DEN
Mediocre 3.3

Good connection, timely departure, pleasant crew

Budget airline ended up being much more expensive than my usual airlines. $40 per bag per leg of the trip, including carry-on?! My wife and I each had one carry on bag (normally free). Since we had a connection each direction that's $40 x 2 (people) x 4 flights = $320. That's ridiculous. Furthermore, these were the worst seating conditions on any airline I've ever seen (and I fly plenty). There is no headrest - the seats barely make it to my shoulders. And the seats themselves have no cushion whatsoever. The tray tables are laughably miniscule - much smaller than my laptop. There is no free snack/beverage or in-flight entertainment. There is no wifi. I will stick to United or Delta in the future.

Wed, Feb 14
SEA
DEN
2h 42m
Mon, Feb 19
DEN
SEA
3h 04m
Trip: 6 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

SEA
DEN
Excellent 8.0

Great flight attendants, amazing landing in Denver.

It was delayed. But I appreciated the meal voucher and voucher for future travel.

SEA
DEN
Mediocre 3.3

Good connection, timely departure, pleasant crew

Budget airline ended up being much more expensive than my usual airlines. $40 per bag per leg of the trip, including carry-on?! My wife and I each had one carry on bag (normally free). Since we had a connection each direction that's $40 x 2 (people) x 4 flights = $320. That's ridiculous. Furthermore, these were the worst seating conditions on any airline I've ever seen (and I fly plenty). There is no headrest - the seats barely make it to my shoulders. And the seats themselves have no cushion whatsoever. The tray tables are laughably miniscule - much smaller than my laptop. There is no free snack/beverage or in-flight entertainment. There is no wifi. I will stick to United or Delta in the future.

SEA
DEN
Mediocre 2.0

Nothing positive

I wasn't allowed to board because they closed the flight. I didn't realize you have to pay an additional fee to get your seat assignement to even get on the flight. I've been delayed a full 24hrs. That on top of $40 fee to have my carry on. At this point, my $175 plane ticket has ballooned to almost $245 which is more expensive than other flights where they treat you like a human being. F this company.

Wed, Apr 25
SEA
DEN
2h 41m
Sat, Apr 28
DEN
SEA
2h 58m
Trip: 4 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Excellent 10.0

The whole experience was smooth:) I have learned how to travel by flight over the years. The less luggage the better most of my bad experiences are with T.S.A. theft and slow down.

SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Mediocre 2.0

Nothing

It was a total shit-show. Only one person to check people in the counter. No kiosks were working on my way back. On the way there very few were working, I did it once, paid for my one bag, and it printed blank. There were no available workers to help me, so I switched to another kiosk and had to again, pay for my bag. On the way back we landed and had to wait 30 minutes to get to the gate. It was a horrible experience in all.

SEA
DEN
Excellent 8.0

Great flight attendants, amazing landing in Denver.

It was delayed. But I appreciated the meal voucher and voucher for future travel.

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

Mon, Apr 30
SEA
DEN
2h 41m
Sat, May 12
DEN
SEA
3h 00m
Trip: 13 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.6

hmm

layover nothing was in order staff sucked yall kept moving gate yall could at lest give us a soda for the long rides

SEA
DEN
Mediocre 3.3

Good connection, timely departure, pleasant crew

Budget airline ended up being much more expensive than my usual airlines. $40 per bag per leg of the trip, including carry-on?! My wife and I each had one carry on bag (normally free). Since we had a connection each direction that's $40 x 2 (people) x 4 flights = $320. That's ridiculous. Furthermore, these were the worst seating conditions on any airline I've ever seen (and I fly plenty). There is no headrest - the seats barely make it to my shoulders. And the seats themselves have no cushion whatsoever. The tray tables are laughably miniscule - much smaller than my laptop. There is no free snack/beverage or in-flight entertainment. There is no wifi. I will stick to United or Delta in the future.

SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Good 7.3

Price

I like to get to the airport early. It's always a gamble with what the TSA lines will be. So extra time get through and enjoy some food with no rush. Had to wait for over a hour just to check on our bag.

SEA
DEN
Mediocre 2.0

Nothing positive

I wasn't allowed to board because they closed the flight. I didn't realize you have to pay an additional fee to get your seat assignement to even get on the flight. I've been delayed a full 24hrs. That on top of $40 fee to have my carry on. At this point, my $175 plane ticket has ballooned to almost $245 which is more expensive than other flights where they treat you like a human being. F this company.

Fri, May 25
SEA
DEN
2h 51m
Tue, May 29
DEN
SEA
2h 57m
Trip: 5 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 460 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

SEA
DEN
Excellent 8.0

Great flight attendants, amazing landing in Denver.

It was delayed. But I appreciated the meal voucher and voucher for future travel.

SEA
DEN
Excellent 9.5

The price of tickets. Plane was on time and crew were excellent. The plane was new and seats were comfy.

We did not know we needed to ask for our seats at the time of check in. A little confusing when we got to the gate. It turned out fine with our sitting in the seats for emergency. They were very comfortable.

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

SEA
DEN
Mediocre 3.6

Crew was entertaining

Second most uncomfortable plane I've ever been on. Most uncomfortable was the frontier transfer directly after.

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