AirHint found the following cheapest return flights from Denver (DEN) to Seattle (SEA)
in December 2024 (see full year ).
Return flights
24 Dec
- 31 Dec
Frontier Airlines
108 €
18 Dec
- 10 Jan
Frontier Airlines
110 €
direct
19 Dec
- 10 Jan
Frontier Airlines
110 €
18 Dec
- 31 Dec
Frontier Airlines
111 €
direct
24 Dec
- 31 Dec
Frontier Airlines
150 €
direct
19 Dec
- 10 Jan
Frontier Airlines
152 €
direct
18 Dec
- 11 Jan
Frontier Airlines
155 €
19 Dec
- 11 Jan
Frontier Airlines
159 €
18 Dec
- 11 Jan
Frontier Airlines
159 €
direct
16 Dec
- 19 Dec
Frontier Airlines
165 €
25 Dec
- 30 Dec
Frontier Airlines
166 €
direct
12 Dec
- 15 Dec
Frontier Airlines
170 €
direct
24 Dec
- 27 Dec
Frontier Airlines
173 €
23 Dec
- 02 Jan
Frontier Airlines
179 €
direct
23 Dec
- 03 Jan
Frontier Airlines
179 €
15 Dec
- 29 Dec
Frontier Airlines
183 €
direct
19 Dec
- 26 Dec
Frontier Airlines
185 €
direct
17 Dec
- 19 Dec
Frontier Airlines
189 €
23 Dec
- 04 Jan
Frontier Airlines
189 €
22 Dec
- 02 Jan
Frontier Airlines
189 €
direct
Also check the deals for one-way flights from Denver to Seattle in December .
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers.
Only the cheapest flights are offered.
Select a price to book and secure these cheap prices.