Home Fares From A City Denver, CO Denver, CO (DEN) To Seattle, WA (SEA)
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HOW TO FIND THIS FARE
  • AIRLINES
    Frontier
  • PURCHASE BY
    Mon, August 29, 2016
  • TRAVEL ENDING
    Wed, November 16, 2016
Peter T.
Staff Airfare Analyst
Peter's Notes:
Non-stop.
20% off* Promo Code Fare; Late Summer/Fall travel. No min. stay. Fare can be bought one-way for half the lowest roundtrip price.
Book this fare on FlyFrontier.com using promo code SAVE20 for Sun-Thu & Sat travel between Aug. 30 - Nov. 16, 2016.

This is the lowest fare found within the promo code travel period and may not be available throughout the entire travel period or on a daily basis. Some routes are seasonal and may not operate through the entire travel period. Lower fares may be available for Frontier Discount Den members.

*Promo code takes 20% off the base fare only and does not apply to taxes/fees. This promo code expires at 11:59 p.m. ET on Aug. 29, 2016.

Frontier charges a $30-$35 fee each way for carry-on bags larger than 18x14x8 inches and a $25-$30 fee each way for first checked bag no larger than 62 linear inches (length + width + depth) and no heavier than 50 pounds. These bag fees apply to online purchases before check-in. Higher fees apply at the airport.

During booking on FlyFrontier.com, you can purchase "The Works", which includes one checked bag, one carry-on bag, stretch seating, no change fees, and refundability, for much less than purchasing these items separately.
To the best of our knowledge, there is a reasonable amount of seat availability at the stated price. Flexible travel dates may be required to find this rate; seats may not be available on all flights or all dates of travel. Holiday periods may be excluded. We monitor the availability of the fare and take efforts to remove and/or modify fares when no longer available.
All mandatory taxes/fees are included in the price. Tax-inclusive fare may be a few dollars higher or lower depending on the airport you connect through, if any. Baggage fees, if applicable, and other optional fees are not included. Our Dealhounds found this airfare using flexible date search. This means we searched a range of dates to find you the best price.
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Reviews for Denver to Seattle
9 Traveler Reviews
"check in with alaska @ denver good, check in with frontier @ seatac grumpy!"
Flight from Denver to Seattle
Airline: Alaska
RT/OW: roundtrip
Date of Flight: April 2011
Seat Class: economy
Check-in Experience
In-flight Service
Seat Comfort
everything with alaska airlines was good. good customer service all the way around. check in with our return flight back with frontier...the animals on the commercials may be funny and friendly but people at the check in counter...look out! everything else on frontier was pretty good though - especially the extra leg room. our <2 year old had enough room to stand, move around a bit and play.
Found by other travelers: Denver, CO (DEN) to Seattle, WA (SEA)
$252
Flight from Denver to Seattle (DEN - SEA)
Sun, Jul 20 - Wed, Jul 23
Alaska
$247
Flight from Denver to Seattle (DEN - SEA)
Wed, Jun 11 - Thu, Jun 12
United
$178
Flight from Denver to Seattle (DEN - SEA)
Thu, Oct 16 - Wed, Oct 22
United
$303
Flight from Denver to Seattle (DEN - SEA)
Tue, Jun 10 - Wed, Jun 11
US Airways
$248
Flight from Denver to Seattle (DEN - SEA)
Fri, Aug 1 - Thu, Aug 7
Alaska
$288
Flight from Denver to Seattle (DEN - SEA)
Fri, Aug 15 - Sun, Aug 17
Frontier
$353
Flight from Denver to Seattle (DEN - SEA)
Thu, Jun 26 - Sat, Jun 28
Alaska
$364
Flight from Denver to Seattle (DEN - SEA)
Sun, Jun 22 - Sun, Jun 29
Alaska
$248
Flight from Denver to Seattle (DEN - SEA)
Tue, Jun 24 - Thu, Jun 26
Alaska
$298
Flight from Denver to Seattle (DEN - SEA)
Mon, Jul 21 - Sun, Jul 27
Frontier
There are approximately 179 flights covering the route from Denver International Airport in Denver to Seattle/Tacoma International Airport in Seattle, provided by as many as 8 airlines.
The following airlines often offer cheap flights from Denver to Seattle
Alaska
Continental
Southwest
United
American
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