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Cheap flights from Denver to Seattle

40 nonstop flights a week, 5 of them today. Operated by 4 airlines, about 3h 5m in the air, 1,020 mi (1,641 km). Tickets from $135, nonstop from $181.

Flights from Denver to Seattle

Pick a departure date to see flights and seller prices

We search agencies and airlines for your day: nonstop and connecting flights, baggage, departure and arrival times.

Filters

Best fares from Denver to Seattle

Lowest one-way prices found by recent searches for the next 120 days; press a card to search that date

Cheapest one-way $135 14 November 2026, with a connection Cheapest nonstop $181 14 November 2026, F9 Cheapest in the next 7 days $135 14 November, Sat Cheapest weekend departure $135 Sat, 14 November 2026 Cheapest month November 2026 tickets from $135

Denver to Seattle at a glance

flight time, from 2h 50m to 5h 20m
3h 5m
straight-line distance
1,020 mi (1,641 km)
flights a week
40
flights today
5
first and last departure
06:00 - 11:50
lowest price, with a connection, 14 November
$135
lowest nonstop price
$181
airlines
4

Denver to Seattle flight schedule

40 flights a week, 5 today, 38 seasonal or one-off. Departure and arrival times are local.

FlightDepartsArrivesDurationDaysAircraft
DL 1731
Delta
06:00 Denver International
08:12 Seattle-Tacoma International
3h 12m
Daily
Airbus A220-300
AS 317
Alaska Airlines
06:01 Denver International
08:11 Seattle-Tacoma International
3h 10m
Mon, Fri, Sat, Sun
Boeing 737-900
WN 4784
Southwest Airlines
06:15 Denver International
08:25 Seattle-Tacoma International
3h 10m
Thu, Fri
AS 317
Alaska Airlines
07:03 Denver International
09:07 Seattle-Tacoma International
3h 4m
Daily
Boeing 737
UA 2271
United Airlines
07:40 Denver International
09:47 Seattle-Tacoma International
3h 7m
Daily
Airbus A319
WN 1788
Southwest Airlines
08:30 Denver International
10:40 Seattle-Tacoma International
3h 10m
Mon, Thu, Fri, Sun
Boeing 737
WN 1370
Southwest Airlines
08:50 Denver International
11:00 Seattle-Tacoma International
3h 10m
Sat
Boeing 737-800
WN 1543
Southwest Airlines
08:50 Denver International
11:00 Seattle-Tacoma International
3h 10m
Mon, Tue, Wed, Thu
WN 1788
Southwest Airlines
09:00 Denver International
11:05 Seattle-Tacoma International
3h 5m
Sat
Boeing 737-800
UA 2302
United Airlines
11:50 Denver International
13:54 Seattle-Tacoma International
3h 4m
Daily
Boeing 737

Seasonal and one-off flights

Not operating in the next two weeks. The first of them is on 24 November.

FlightDepartsArrivesDurationDaysAircraft
WN 1788
Southwest Airlines
08:35 Denver International
10:40 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 1788
Southwest Airlines
08:00 Denver International
10:15 Seattle-Tacoma International
3h 15m
Seasonal
Boeing 737
UA 1097
United Airlines
00:25 Denver International
02:32 Seattle-Tacoma International
3h 7m
Seasonal
Boeing 737
WN 1788
Southwest Airlines
09:10 Denver International
11:15 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
AS 317
Alaska Airlines
07:00 Denver International
09:13 Seattle-Tacoma International
3h 13m
Seasonal
Boeing 737-900
UA 310
United Airlines
11:45 Denver International
13:49 Seattle-Tacoma International
3h 4m
Seasonal
Boeing 737-900
AS 682
Alaska Airlines
12:08 Denver International
14:18 Seattle-Tacoma International
3h 10m
Seasonal
Boeing 737-800
AS 317
Alaska Airlines
06:00 Denver International
08:10 Seattle-Tacoma International
3h 10m
Seasonal
Boeing 737-900
UA 2302
United Airlines
11:30 Denver International
13:35 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
DL 1731
Delta
06:05 Denver International
08:23 Seattle-Tacoma International
3h 18m
Seasonal
Airbus A220-300
DL 1731
Delta
06:45 Denver International
08:59 Seattle-Tacoma International
3h 14m
Seasonal
Airbus A220-300
UA 2302
United Airlines
11:45 Denver International
13:50 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737-900
AS 682
Alaska Airlines
12:00 Denver International
14:05 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737-900
WN 1160
Southwest Airlines
09:05 Denver International
11:10 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737-800
WN 1017
Southwest Airlines
09:20 Denver International
11:25 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 1160
Southwest Airlines
08:30 Denver International
10:35 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
AS 643
Alaska Airlines
07:00 Denver International
09:05 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737-900
UA 2271
United Airlines
08:00 Denver International
10:06 Seattle-Tacoma International
3h 6m
Seasonal
Boeing 737-800
WN 1160
Southwest Airlines
08:35 Denver International
10:40 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
AS 512
Alaska Airlines
09:00 Denver International
11:03 Seattle-Tacoma International
3h 3m
Seasonal
Boeing 737-900
UA 2302
United Airlines
11:21 Denver International
13:20 Seattle-Tacoma International
2h 59m
Seasonal
Boeing 737-900
WN 179
Southwest Airlines
08:30 Denver International
10:35 Seattle-Tacoma International
3h 5m
Seasonal
WN 4340
Southwest Airlines
08:35 Denver International
10:40 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 4340
Southwest Airlines
08:50 Denver International
10:55 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 1942
Southwest Airlines
08:30 Denver International
10:35 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 188
Southwest Airlines
07:40 Denver International
12:00 Seattle-Tacoma International
5h 20m
Seasonal
Boeing 737
WN 1697
Southwest Airlines
09:05 Denver International
11:05 Seattle-Tacoma International
3h
Seasonal
Boeing 737
WN 1697
Southwest Airlines
08:30 Denver International
10:30 Seattle-Tacoma International
3h
Seasonal
Boeing 737-800
WN 1697
Southwest Airlines
08:20 Denver International
10:20 Seattle-Tacoma International
3h
Seasonal
Boeing 737
WN 948
Southwest Airlines
11:30 Denver International
13:20 Seattle-Tacoma International
2h 50m
Seasonal
WN 1507
Southwest Airlines
07:45 Denver International
09:50 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 1508
Southwest Airlines
11:25 Denver International
13:25 Seattle-Tacoma International
3h
Seasonal
Boeing 737
WN 4472
Southwest Airlines
06:30 Denver International
08:30 Seattle-Tacoma International
3h
Seasonal
Boeing 737
WN 1508
Southwest Airlines
08:05 Denver International
10:10 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 4472
Southwest Airlines
07:50 Denver International
09:55 Seattle-Tacoma International
3h 5m
Seasonal
WN 1508
Southwest Airlines
12:00 Denver International
14:05 Seattle-Tacoma International
3h 5m
Seasonal
WN 1507
Southwest Airlines
08:35 Denver International
10:40 Seattle-Tacoma International
3h 5m
Seasonal
Boeing 737
WN 3524
Southwest Airlines
11:50 Denver International
13:50 Seattle-Tacoma International
3h
Seasonal
Boeing 737

Days of the week are taken from the schedule for the next 14 days; schedules change by season. Seattle is 1 hour behind Denver. The search shows seat availability and the price for your date.

Airlines flying Denver to Seattle

Flights a week by schedule and the cheapest nonstop fare of each airline found by recent searches

United Airlines14 a week Southwest Airlines12 a week Alaska Airlines7 a week Delta7 a week

Airports

Where flights from Denver to Seattle depart and land

Departure from Denver

Denver International DEN

40 flights a week, 18 mi (29 km) from the city centre

About the airport

Arrival in Seattle

Seattle-Tacoma International SEA

40 flights a week, 11 mi (18 km) from the city centre

About the airport

When to visit Seattle

Weather by month

Best time to visit: May, June, July, August and September, +17° to +25° by day. In November it is +10° by day and +5° at night, with 17 rainy days.

Jan
+8° +2° 16 days
Feb
+8° +2° 14 days
Mar
+11° +4° 15 days
Apr
+13° +6° 14 days
May
+17° +9° 11 days
Jun
+21° +12° 7 days
Jul
+25° +15° 1 days
Aug
+25° +15° 6 days
Sep
+21° +13° 7 days
Oct
+15° +9° 14 days
Nov
+10° +5° 17 days
Dec
+8° +4° 20 days

Daytime and night temperatures in °C, rainy days. Months with the most comfortable weather are in green. Long-term averages.

Frequently asked questions

How long is the flight from Denver to Seattle?
A nonstop flight takes 3 hours 5 minutes on average, from 2h 50m to 5h 20m depending on the flight.
How far is Seattle from Denver?
1,020 mi (1,641 km) in a straight line between the cities.
Which airlines fly nonstop from Denver to Seattle?
United Airlines (14 a week), Southwest Airlines (12 a week), Alaska Airlines (7 a week) and Delta (7 a week).
How many flights a day are there from Denver to Seattle?
5 flights today and 40 a week, about 5.7 a day on average.
When are the first and last flights from Denver to Seattle?
The first departure is at 06:00 (DL1731), the last at 11:50 (UA2302). Local time.
What is the cheapest upcoming date to fly from Denver to Seattle?
14 November 2026 (Saturday): from $135 one way, with a connection, by recent searches. The search shows the price for your dates.
What is the time difference between Denver and Seattle?
Seattle is 1 hour behind Denver. Schedule times on this page are local to each airport.
Which Denver airport do flights to Seattle leave from?
Denver International (40 a week).