Find Cheap Flights from Seattle to Denver International

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Seattle to Denver International

(Round-trip)
Depart: Tue Sep 19 2017 Return: Tue Sep 26 2017 Trip spans 8 days
United
United
SEA
11:32a
DEN
2:15p
2h 43m
nonstop
DEN
4:05a
SEA
7:03a
2h 58m
nonstop
Depart: Wed Aug 23 2017 Return: Tue Aug 29 2017 Trip spans 7 days
Frontier
Frontier
SEA
2:44p
DEN
5:24p
2h 40m
nonstop
DEN
4:00a
SEA
6:57a
2h 57m
nonstop
Depart: Tue Aug 22 2017 Return: Sat Sep 23 2017 Trip spans 33 days
Alaska Airlines
Alaska Airlines
SEA
5:15p
DEN
7:44p
2h 29m
nonstop
DEN
3:00a
SEA
6:02a
3h 02m
nonstop
Depart: Sat Aug 26 2017 Return: Sun Sep 3 2017 Trip spans 9 days
Delta
Delta
SEA
3:10p
DEN
5:47p
2h 37m
nonstop
DEN
3:00a
SEA
6:00a
3h 00m
nonstop
Depart: Wed Jul 26 2017 Return: Tue Aug 1 2017 Trip spans 7 days
Spirit Airlines
Spirit Airlines
SEA
5:45p
DEN
5:59a
12h 14m
2 stops
DEN
2:48p
SEA
9:59p
7h 11m
1 stop
Depart: Tue Oct 3 2017 Return: Wed Oct 4 2017 Trip spans 2 days
United
United
SEA
11:32a
DEN
2:15p
2h 43m
nonstop
DEN
6:15p
SEA
9:10p
2h 55m
nonstop
Depart: Wed Sep 13 2017 Return: Tue Sep 19 2017 Trip spans 7 days
Frontier
Frontier
SEA
2:40p
DEN
5:19p
2h 39m
nonstop
DEN
12:10p
SEA
3:07p
2h 57m
nonstop
Depart: Wed Oct 4 2017 Return: Wed Oct 11 2017 Trip spans 8 days
United
United
SEA
1:20p
DEN
3:56p
2h 36m
nonstop
DEN
6:15p
SEA
9:10p
2h 55m
nonstop
Depart: Wed Aug 30 2017 Return: Sun Sep 3 2017 Trip spans 5 days
Delta
Delta
SEA
9:15a
DEN
12:05p
2h 50m
nonstop
DEN
3:00a
SEA
6:00a
3h 00m
nonstop
Depart: Sat Oct 7 2017 Return: Tue Oct 10 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
3:35p
DEN
6:03p
2h 28m
nonstop
DEN
3:00a
SEA
6:05a
3h 05m
nonstop
Depart: Tue Aug 29 2017 Return: Sat Sep 2 2017 Trip spans 5 days
Frontier
Frontier
SEA
2:59p
DEN
5:39p
2h 40m
nonstop
DEN
3:40p
SEA
6:36p
2h 56m
nonstop
Depart: Tue Oct 10 2017 Return: Wed Oct 11 2017 Trip spans 2 days
United
United
SEA
11:25a
DEN
2:08p
2h 43m
nonstop
DEN
6:15p
SEA
9:10p
2h 55m
nonstop
Depart: Sat Sep 9 2017 Return: Mon Sep 11 2017 Trip spans 3 days
Delta
Delta
SEA
3:55a
DEN
6:44a
2h 49m
nonstop
DEN
3:55p
SEA
6:56p
3h 01m
nonstop
Depart: Sat Nov 18 2017 Return: Thu Nov 23 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
2:59p
DEN
5:26p
2h 27m
nonstop
DEN
1:10a
SEA
4:22a
3h 12m
nonstop
Depart: Thu Sep 7 2017 Return: Tue Sep 12 2017 Trip spans 6 days
Frontier
Frontier
SEA
3:10p
DEN
5:47p
2h 37m
nonstop
DEN
4:00a
SEA
7:02a
3h 02m
nonstop
Depart: Wed Sep 20 2017 Return: Mon Sep 25 2017 Trip spans 6 days
Delta
Delta
SEA
9:15a
DEN
12:05p
2h 50m
nonstop
DEN
3:00a
SEA
6:00a
3h 00m
nonstop
Depart: Thu Dec 7 2017 Return: Sat Dec 9 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
1:05a
DEN
3:47a
2h 42m
nonstop
DEN
1:10p
SEA
4:23p
3h 13m
nonstop
Depart: Tue Sep 12 2017 Return: Fri Sep 15 2017 Trip spans 4 days
United
United
SEA
11:32a
DEN
2:15p
2h 43m
nonstop
DEN
6:15p
SEA
9:10p
2h 55m
nonstop
Depart: Thu Sep 14 2017 Return: Wed Sep 20 2017 Trip spans 7 days
Frontier
Frontier
SEA
3:10p
DEN
5:47p
2h 37m
nonstop
DEN
4:00a
SEA
7:02a
3h 02m
nonstop
Depart: Sat Sep 23 2017 Return: Mon Sep 25 2017 Trip spans 3 days
Delta
Delta
SEA
3:10p
DEN
5:47p
2h 37m
nonstop
DEN
3:00a
SEA
6:00a
3h 00m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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Airports
Origin

Seattle
$137
Destination

Denver
$137
Airlines Airline reviews

660 travelers who booked a flight from Seattle to Denver rated their chosen airlines with an average of 5.9.

Overall
6.0
Boarding
6.4
Crew
7.0
Comfort
5.7
Food
4.8
Entertainment
4.6