Cheap Flights from Denver to Seattle
Browse current best options from Denver. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
Denver
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Prices updated 24 days ago
486,190 searches this week
171 airlines compared
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Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)
Today’s best flight deals from Denver to Seattle
Explore current cheapest deals departing from Denver to Seattle
Round trip
Sort by: Cheapest
October 20 - October 21
DEN - Seattle
$175
$89
Round trip
October 20 - October 27
DEN - Seattle
$171
$89
Round trip
October 21 - October 27
DEN - Seattle
$171
$89
Round trip
October 20 - October 22
DEN - Seattle
$176
$102
Round trip
October 1 - October 27
DEN - Seattle
$136
$102
Round trip
October 4 - October 27
DEN - Seattle
$141
$102
Round trip
September 24 - October 21
DEN - Seattle
$134
$102
Round trip
October 1 - October 21
DEN - Seattle
$136
$102
Round trip
October 4 - October 21
DEN - Seattle
$143
$102
Round trip
October 8 - October 21
DEN - Seattle
$150
$102
Round trip
Unlock all 500+ flight deals to Seattle and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from Denver to Seattle
How much is a round trip from Denver to Seattle
Regular price: $133 - $240
Prices are currently below the regular range for flights from Denver to Seattle.
The regular price range for flights from Denver to Seattle is between $133 and $240. The current lowest deal is $89 with Frontier Airlines, for travel from Oct 20-Oct 21.
now $89
Low $133
High $240
The cheapest time to fly from Denver to Seattle
The cheapest month to fly from Denver to Seattle is April, with a median price of $93. The most expensive month is June, with a median price of $391. Generally, prices are lower from April to December.
April
Flights from $93
June
Flights from $391
Direct flights from Denver to Seattle
Frontier Airlines
Last-minute flights going from Denver to Seattle
Sun, Jun 21
DEN - Seattle
Denver (DEN) - Seattle (SEA)
Frontier Airlines
$455
$360
One-way
Mon, Jun 22
DEN - Seattle
Denver (DEN) - Seattle (SEA)
Frontier Airlines
$398
$309
One-way
Wed, Jun 24
DEN - Seattle
Denver (DEN) - Seattle (SEA)
Frontier Airlines
$397
$286
One-way
Wed, Jun 24
DEN - Seattle
Denver (DEN) - Seattle (SEA)
Frontier Airlines
$398
$315
One-way
Thu, Jun 25
DEN - Seattle
Denver (DEN) - Seattle (SEA)
Frontier Airlines
$372
$260
One-way
Sat, Jun 27
DEN - Seattle
Denver (DEN) - Seattle (SEA)
Frontier Airlines
$395
$295
One-way
Biggest price drops on these dates for flights from Denver to Seattle
Oct 22 - Oct 25
$390 → $239
39%
Oct 20 - Oct 28
$263 → $148
44%
Jun 25 - Jun 30
$372 → $260
30%
Jun 24 - Jun 25
$397 → $286
28%
Popular Airports to fly from Denver to Seattle
Denver - Seattle route insights
💸 Price insights
Recent fares are above the typical level
Recent fares from Denver to Seattle are above the typical level, with a median price of $236.
📅 Best time to fly
April is historically the cheapest month to fly
Historically, April is the cheapest month to fly from Denver to Seattle, with a median price of $93.
⏱️ Flight duration
Direct flights take 5h 58m on average
The typical flight duration from Denver to Seattle is 5h 58m, covering 1645 km.
✈️ Airlines & availability
70% of deals are for direct flights
70% of deals from Denver to Seattle are for direct flights, with frequent deals available.
🏆 Airline highlight
Frontier Airlines offers direct flights
Frontier Airlines is one of the airlines offering direct flights from Denver to Seattle.
🎯 Booking tip
Deals appear frequently for this route
Deals for flights from Denver to Seattle appear frequently, with over 1 deal per day.
Denver main airports to depart from
Denver International (DEN)
Denver International Airport is the cheapest option for flights from Denver to Seattle.
📍 ~48 km from Denver (reachable by car or train)
💸 Flights from ~$89
Seattle main airports to arrive at
Seattle–Tacoma International (SEA)
Seattle–Tacoma International Airport is a primary arrival option for flights from Denver to Seattle.
📍 ~20 km from Seattle (reachable by car)
💸 Flights from ~$89
Boeing Field (BFI)
Boeing Field offers an alternative arrival point for travelers flying from Denver to Seattle.
📍 ~10 km from Seattle (reachable by car)
💸 Flights from ~$527
Kenmore Air Harbor Seaplane Base (LKE)
Kenmore Air Harbor Seaplane Base provides a unique arrival experience for flights from Denver.
📍 ~3 km from Seattle (reachable by car)
💸 Flights from ~$1089
Airports nearby Seattle used as alternative
Paine Field Everett (PAE)
Consider Paine Field Everett for a more streamlined terminal experience and shorter security wait times.
📍 ~40 km from Seattle (reachable by car)
💸 Flights from ~$198
Portland International (PDX)
Portland International is a major hub that can offer competitive fares, especially for long-haul flights.
📍 ~230 km from Seattle (reachable by car or train)
💸 Flights from ~$96
Vancouver International (YVR)
Vancouver International is a major international gateway with extensive flight options, potentially with lower fares.
📍 ~230 km from Seattle (reachable by car, requires international border crossing)
💸 Flights from ~$222
Bellingham International (BLI)
Bellingham International is a primary low-cost carrier airport with easier parking and faster processing.
📍 ~145 km from Seattle (reachable by car)
💸 Flights from ~$228
Abbotsford International (YXX)
Abbotsford International can be an alternative low-cost gateway for Canadian domestic connections.
📍 ~160 km from Seattle (reachable by car, requires international border crossing)
💸 Flights from ~$273
Business & First Class Flight Deals to Seattle
Discover luxury on the budget with premium cabin class on flights from Denver to Seattle.
Elite
Best Elite deals to Seattle
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From DEN
Elite
Aug 07
Seattle, United States
76% AI deal score
$1,174
$717
Save $457
From DEN
Elite
Aug 07
Seattle, United States
75% AI deal score
$1,170
$756
Save $414
From DEN
Elite
Aug 07
Seattle, United States
74% AI deal score
$1,174
$777
Save $397
From DEN
Elite
Aug 07
Seattle, United States
74% AI deal score
$1,167
$777
Save $390
From DEN
Elite
Aug 07
Seattle, United States
74% AI deal score
$1,160
$777
Save $383
From DEN
Elite
Jul 29
Seattle, United States
68% AI deal score
$1,168
$871
Save $297
From DEN
Elite
Aug 03
Seattle, United States
68% AI deal score
$1,158
$871
Save $287
From DEN
Elite
Aug 06
Seattle, United States
68% AI deal score
$1,149
$871
Save $278
From DEN
Elite
Aug 02
Seattle, United States
68% AI deal score
$1,165
$872
Save $293
From DEN
Elite
Aug 26
Seattle, United States
68% AI deal score
$754
$667
Save $87
From DEN
Elite
Aug 12
Seattle, United States
68% AI deal score
$746
$667
Save $79
From DEN
Elite
Aug 01
Seattle, United States
67% AI deal score
$798
$635
Save $163
From DEN
Elite
Aug 04
Seattle, United States
67% AI deal score
$783
$635
Save $148
From DEN
Elite
Aug 05
Seattle, United States
67% AI deal score
$779
$635
Save $144
From DEN
Elite
Aug 01
Seattle, United States
67% AI deal score
$1,158
$896
Save $262
From DEN
Elite
Sep 06
Seattle, United States
66% AI deal score
$1,130
$895
Save $235
From DEN
Elite
Aug 01
Seattle, United States
66% AI deal score
$766
$635
Save $131
From DEN
Elite
Aug 01
Seattle, United States
66% AI deal score
$765
$635
Save $130
From DEN
Elite
Aug 04
Seattle, United States
66% AI deal score
$760
$635
Save $125
From DEN
Elite
Aug 05
Seattle, United States
66% AI deal score
$765
$635
Save $130
From DEN
Elite
Aug 05
Seattle, United States
66% AI deal score
$761
$635
Save $126
From DEN
Elite
Aug 08
Seattle, United States
66% AI deal score
$774
$635
Save $139
From DEN
Elite
Aug 22
Seattle, United States
66% AI deal score
$746
$635
Save $111
From DEN
Elite
Aug 01
Seattle, United States
66% AI deal score
$775
$655
Save $120
From DEN
Elite
Aug 03
Seattle, United States
66% AI deal score
$792
$655
Save $137
From DEN
Elite
Aug 03
Seattle, United States
66% AI deal score
$779
$655
Save $124
From DEN
Elite
Aug 04
Seattle, United States
66% AI deal score
$769
$655
Save $114
From DEN
Elite
Aug 05
Seattle, United States
66% AI deal score
$766
$655
Save $111
From DEN
Elite
Aug 06
Seattle, United States
66% AI deal score
$786
$655
Save $131
From DEN
Elite
Aug 06
Seattle, United States
66% AI deal score
$766
$655
Save $111
From DEN
Elite
Aug 06
Seattle, United States
66% AI deal score
$765
$655
Save $110
From DEN
Elite
Aug 02
Seattle, United States
66% AI deal score
$801
$656
Save $145
From DEN
Elite
Aug 02
Seattle, United States
66% AI deal score
$775
$656
Save $119
From DEN
Elite
Aug 07
Seattle, United States
66% AI deal score
$781
$656
Save $125
From DEN
Elite
Aug 07
Seattle, United States
66% AI deal score
$774
$656
Save $118
From DEN
Elite
Jun 23
Seattle, United States
66% AI deal score
$1,038
$1,017
Save $21
From DEN
Elite
Sep 08
Seattle, United States
65% AI deal score
$673
From DEN
Elite
Sep 09
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 01
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 05
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 01
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 09
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 05
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 01
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 05
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 01
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Nov 14
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Nov 14
Seattle, United States
65% AI deal score
$674
From DEN
Elite
Sep 08
Seattle, United States
65% AI deal score
$675
From DEN
Elite
Aug 01
Seattle, United States
65% AI deal score
$765
$655
Save $110
From DEN
Elite
Aug 03
Seattle, United States
65% AI deal score
$765
$655
Save $110
From DEN
Elite
Aug 05
Seattle, United States
65% AI deal score
$756
$655
Save $101
From DEN
Elite
Aug 01
Seattle, United States
65% AI deal score
$765
$656
Save $109
From DEN
Elite
Aug 02
Seattle, United States
65% AI deal score
$766
$656
Save $110
From DEN
Elite
Aug 07
Seattle, United States
65% AI deal score
$761
$656
Save $105
From DEN
Elite
Aug 03
Seattle, United States
65% AI deal score
$787
$675
Save $112
From DEN
Elite
Aug 06
Seattle, United States
65% AI deal score
$779
$675
Save $104
From DEN
Elite
Sep 09
Seattle, United States
65% AI deal score
$675
From DEN
Elite
Sep 12
Seattle, United States
65% AI deal score
$675
From DEN
Elite
Aug 02
Seattle, United States
65% AI deal score
$789
$676
Save $113
From DEN
Elite
Aug 07
Seattle, United States
65% AI deal score
$774
$676
Save $98
From DEN
Elite
Sep 08
Seattle, United States
65% AI deal score
$673
$667
Save $6
From DEN
Elite
Sep 05
Seattle, United States
65% AI deal score
$670
$667
Save $3
From DEN
Elite
Sep 08
Seattle, United States
65% AI deal score
$674
$667
Save $7
From DEN
Elite
Sep 09
Seattle, United States
50% AI deal score
$674
From DEN
Elite
Sep 01
Seattle, United States
50% AI deal score
$674
From DEN
Elite
Sep 09
Seattle, United States
50% AI deal score
$674
From DEN
Elite
Aug 04
Seattle, United States
50% AI deal score
$747
$655
Save $92
From DEN
Elite
Aug 05
Seattle, United States
50% AI deal score
$743
$656
Save $87
From DEN
Elite
Aug 06
Seattle, United States
50% AI deal score
$761
$675
Save $86
From DEN
Elite
Sep 09
Seattle, United States
50% AI deal score
$675
From DEN
Elite
Aug 02
Seattle, United States
50% AI deal score
$766
$676
Save $90
From DEN
Elite
Aug 07
Seattle, United States
50% AI deal score
$760
$676
Save $84
From DEN
Elite
Aug 02
Seattle, United States
50% AI deal score
$766
$677
Save $89
From DEN
Elite
Jun 19
Seattle, United States
50% AI deal score
$946
$835
Save $111
From DEN
Elite
Jul 29
Seattle, United States
50% AI deal score
$667
From DEN
Elite
Jul 29
Seattle, United States
50% AI deal score
$667
From DEN
Elite
Jul 25
Seattle, United States
50% AI deal score
$667
From DEN
Elite
Jul 14
Seattle, United States
50% AI deal score
$667
From DEN
Elite
Jul 21
Seattle, United States
50% AI deal score
$667
From DEN
Elite
Jul 29
Seattle, United States
50% AI deal score
$687
From DEN
Elite
Jul 19
Seattle, United States
50% AI deal score
$688
From DEN
Elite
Jul 29
Seattle, United States
50% AI deal score
$688
From DEN
Elite
Jul 08
Seattle, United States
50% AI deal score
$698
From DEN
Elite
Jul 08
Seattle, United States
50% AI deal score
$699
From DEN
Elite
Jul 26
Seattle, United States
50% AI deal score
$709
From DEN
Elite
Jul 12
Seattle, United States
50% AI deal score
$709
From DEN
Elite
Jun 28
Seattle, United States
50% AI deal score
$779
From DEN
Elite
Oct 14
Seattle, United States
49% AI deal score
$1,124
$978
Save $146
From DEN
Elite
Aug 04
Seattle, United States
49% AI deal score
$738
$656
Save $82
From DEN
Elite
Aug 03
Seattle, United States
49% AI deal score
$756
$675
Save $81
From DEN
Elite
Aug 03
Seattle, United States
49% AI deal score
$756
$676
Save $80
From DEN
Elite
Aug 06
Seattle, United States
49% AI deal score
$756
$676
Save $80
From DEN
Elite
Aug 07
Seattle, United States
49% AI deal score
$757
$677
Save $80
From DEN
Elite
Jul 12
Seattle, United States
49% AI deal score
$782
From DEN
Elite
Jun 23
Seattle, United States
49% AI deal score
$916
$835
Save $81
From DEN
Elite
Jun 23
Seattle, United States
48% AI deal score
$1,044
From DEN
Elite
Jul 11
Seattle, United States
48% AI deal score
$696
$656
Save $40
From DEN
Elite
Aug 31
Seattle, United States
48% AI deal score
$730
$676
Save $54
From DEN
Elite
Aug 09
Seattle, United States
48% AI deal score
$721
$677
Save $44