Find Cheap Flights from Seattle to Denver International (03A - DEN)

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

Airports
Origin
Seattle
$77
only
$77
Destination
Denver
$77
only
$77
Tue, Feb 27
SEA
DEN
2h 38m
Tue, Mar 6
DEN
SEA
2h 58m
Trip: 8 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

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 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.

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.

Fri, Mar 2
SEA
DEN
2h 32m
Tue, Mar 6
DEN
SEA
2h 58m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Feb 25
SEA
DEN
2h 39m
Wed, Feb 28
DEN
SEA
3h 11m
Trip: 4 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
ATL
SEA
Excellent 8.3

Great movie selection

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.

LAS
SLC
Good 6.0

the seats were ok

was little late

SEA
DEN
Good 6.0

Seats were uncomfortable

SEA
PDX
Excellent 9.6

Seats a bit cramped

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 464 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
Excellent 8.6

boarding/unboarding is painless and enjoyable and attendants are respectfull

snacks and cokes are charged

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 3.0

Didn't crash

All flights were late, seats were extremely uncomfortable.

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 464 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
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
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
Excellent 8.0

Great flight attendants, amazing landing in Denver.

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

Tue, Mar 27
SEA
DEN
2h 56m
Tue, Apr 3
DEN
SEA
2h 58m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jan 31
SEA
DEN
2h 38m
Thu, Feb 8
DEN
SEA
3h 05m
Trip: 9 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
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.

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.

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, May 9
SEA
DEN
2h 51m
Tue, May 15
DEN
SEA
2h 58m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 9
SEA
DEN
2h 51m
Sat, May 12
DEN
SEA
2h 55m
Trip: 4 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 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 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.

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

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

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.

Sat, Jan 27
SEA
DEN
2h 25m
Wed, Jan 31
DEN
SEA
3h 04m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jun 6
SEA
DEN
2h 51m
Sat, Jun 9
DEN
SEA
3h 00m
Trip: 4 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 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
Excellent 8.6

boarding/unboarding is painless and enjoyable and attendants are respectfull

snacks and cokes are charged

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 2.6

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, Jun 6
SEA
DEN
2h 51m
Mon, Jun 11
DEN
SEA
3h 08m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 10
SEA
DEN
2h 38m
Fri, Feb 16
DEN
SEA
3h 04m
Trip: 7 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

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 3.0

Didn't crash

All flights were late, seats were extremely uncomfortable.

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.

Wed, Jul 4
SEA
DEN
2h 40m
Tue, Jul 10
DEN
SEA
3h 08m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Jul 2
SEA
DEN
2h 43m
Tue, Jul 10
DEN
SEA
2h 56m
Trip: 9 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 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
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.

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

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

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.

Tue, Jul 31
SEA
DEN
2h 40m
Wed, Aug 8
DEN
SEA
2h 56m
Trip: 9 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
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.

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.

SEA
DEN
Excellent 8.6

boarding/unboarding is painless and enjoyable and attendants are respectfull

snacks and cokes are charged

SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

Thu, May 17
SEA
DEN
4h 13m
Sun, May 20
DEN
SEA
2h 55m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Jun 28
SEA
DEN
2h 37m
Wed, Jul 4
DEN
SEA
2h 47m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews

Seattle to Denver International Flight Information

Avg. Flight Duration 2h 51m
Flights Arrive in Denver International
Flights Depart from Seattle
Flight Price $77
Distance 1028 miles
Airlines Frontier, Delta
*
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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.