$100+ Cheap flights from Washington to Denver (DEN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Aug 16 — Aug 231
Round-trip
1 adult, Economy
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Cheapest flights from Washington to DenverExplore the most affordable flight options available from Washington to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
Explore the most affordable flight options available from Washington to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Thu 8/207:15 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Sat 8/87:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$164
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:19 pm
SEA
- DEN
1 stop24h 51m
Frontier
Thu 8/137:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$165
This Super.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/177:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$166
This Frontier deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Wed 8/2611:05 am
DEN
- SEA
Nonstop3h 17m
Frontier
Deal found 7/16![Frontier logo]()
$167
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Sun 8/27:13 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/107:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$169
This Frontier deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Fri 8/77:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Wed 8/127:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Sun 8/27:13 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$172
This Frontier deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/2410:10 am
DEN
- SEA
Nonstop3h 10m
Frontier
Deal found 7/13![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Thu 9/1710:29 pm
DEN
- PDX
1 stop16h 58m
Frontier
Deal found 7/16![Frontier logo]()
$194
Best flights from Washington to DenverDiscover carefully curated flight deals from Washington to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
Discover carefully curated flight deals from Washington to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/33:42 pm
BLI
- DEN
1 stop11h 06m
Multiple Airlines
Thu 8/66:10 am
DEN
- BLI
1 stop27h 57m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:15 pm
PDX
- DEN
1 stop5h 46m
Delta
Tue 9/86:00 am
DEN
- PDX
1 stop5h 40m
Delta
Deal found 7/16![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:05 pm
PDX
- DEN
2 stops7h 15m
Southwest
Tue 9/224:00 pm
DEN
- PDX
1 stop4h 50m
Southwest
Deal found 7/16![Southwest logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:21 pm
PAE
- DEN
1 stop5h 11m
Alaska Airlines
Tue 9/298:08 am
DEN
- PAE
1 stop4h 33m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:00 am
GEG
- DEN
Nonstop2h 22m
United Airlines
Mon 8/247:22 pm
DEN
- GEG
Nonstop2h 24m
United Airlines
Deal found 7/13![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:45 am
PDX
- DEN
1 stop4h 50m
Southwest
Fri 10/168:05 pm
DEN
- PDX
1 stop6h 15m
Southwest
Deal found 7/15![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:54 pm
PDX
- DEN
1 stop5h 04m
Delta
Sat 9/1210:45 am
DEN
- PDX
1 stop6h 20m
Delta
Deal found 7/16![Delta logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:00 am
BLI
- DEN
1 stop20h 52m
Multiple Airlines
Fri 10/912:24 pm
DEN
- BLI
1 stop12h 10m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$262
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:54 pm
PDX
- DEN
1 stop5h 04m
Delta
Wed 8/261:21 pm
DEN
- PDX
1 stop4h 53m
Delta
Deal found 7/15![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:00 am
PDX
- DEN
2 stops7h 55m
Southwest
Sun 8/308:55 am
DEN
- PDX
Nonstop2h 35m
Southwest
Deal found 7/15![Southwest logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:18 am
PDX
- DEN
Nonstop2h 49m
Alaska Airlines
Fri 9/412:05 pm
DEN
- PDX
Nonstop2h 43m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:53 pm
BLI
- DEN
1 stop14h 12m
Multiple Airlines
Sat 8/298:31 pm
DEN
- BLI
1 stop25h 48m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:10 am
SEA
- DEN
Nonstop2h 40m
Southwest
Mon 9/213:40 pm
DEN
- SEA
Nonstop2h 55m
Southwest
Deal found 7/14![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:10 pm
PDX
- DEN
1 stop4h 30m
Delta
Mon 9/286:00 am
DEN
- PDX
1 stop5h 40m
Delta
Deal found 7/16![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:00 pm
PDX
- DEN
1 stop6h 50m
Alaska Airlines
Sun 11/157:50 am
DEN
- PDX
Nonstop3h 00m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:00 am
GEG
- DEN
Nonstop2h 22m
United Airlines
Thu 8/2011:15 am
DEN
- GEG
Nonstop2h 20m
United Airlines
Deal found 7/13![United Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:55 am
SEA
- DEN
2 stops7h 15m
Southwest
Sat 9/199:15 am
DEN
- SEA
1 stop5h 25m
Southwest
Deal found 7/14![Southwest logo]()
$258
This Alaska Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:59 pm
PSC
- DEN
1 stop4h 41m
Alaska Airlines
Tue 8/186:02 am
DEN
- PSC
1 stop4h 51m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:25 pm
PDX
- DEN
1 stop7h 33m
Delta
Tue 8/255:35 am
DEN
- PDX
1 stop4h 02m
Delta
Deal found 7/17![Delta logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:28 pm
BLI
- DEN
1 stop9h 37m
Multiple Airlines
Sun 8/96:00 am
DEN
- BLI
2 stops28h 07m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 am
PSC
- DEN
Nonstop2h 22m
United Airlines
Mon 10/127:13 pm
DEN
- PSC
Nonstop2h 27m
United Airlines
Deal found 7/12![United Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:55 am
SEA
- DEN
2 stops7h 15m
Southwest
Wed 9/25:20 pm
DEN
- SEA
1 stop7h 05m
Southwest
Deal found 7/12![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/147:40 pm
SEA
- DEN
Nonstop2h 48m
Delta
Thu 12/176:30 pm
DEN
- SEA
Nonstop3h 11m
Delta
Deal found 7/14![Delta logo]()
$283
This Alaska Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:21 pm
PAE
- DEN
1 stop5h 11m
Alaska Airlines
Tue 9/298:08 am
DEN
- PAE
1 stop4h 33m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:55 am
SEA
- DEN
2 stops7h 15m
Southwest
Tue 9/227:20 am
DEN
- SEA
1 stop5h 45m
Southwest
Deal found 7/14![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:30 pm
SEA
- DEN
1 stop7h 30m
Delta
Wed 11/2512:20 pm
DEN
- SEA
Nonstop3h 11m
Delta
Deal found 7/12![Delta logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:20 am
PSC
- DEN
1 stop4h 47m
Alaska Airlines
Sat 8/2912:05 pm
DEN
- PSC
1 stop4h 18m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:05 am
SEA
- DEN
1 stop8h 00m
Southwest
Sun 12/138:30 am
DEN
- SEA
Nonstop3h 10m
Southwest
Deal found 7/16![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:25 pm
PSC
- DEN
1 stop7h 22m
Delta
Sun 9/206:00 am
DEN
- PSC
1 stop6h 50m
Delta
Deal found 7/12![Delta logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:59 pm
PSC
- DEN
1 stop4h 41m
Alaska Airlines
Thu 8/207:08 pm
DEN
- PSC
1 stop4h 40m
Alaska Airlines
Deal found 7/15![Alaska Airlines logo]()
$324
Last-minute flights from Washington to DenverDiscover last-minute flight deals from Washington to Denver. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Denver. Data last updated July 17, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Sun 8/27:13 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/37:13 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Sun 8/27:13 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Fri 8/77:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$170
This Frontier deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Sat 8/87:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/107:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$169
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:19 pm
SEA
- DEN
1 stop24h 51m
Frontier
Thu 8/137:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Wed 8/127:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/15![Frontier logo]()
$171
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Thu 8/207:15 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$163
This Super.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/177:00 am
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 7/16![Frontier logo]()
$166
This Frontier deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Mon 8/2410:10 am
DEN
- SEA
Nonstop3h 10m
Frontier
Deal found 7/13![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Wed 8/2611:05 am
DEN
- SEA
Nonstop3h 17m
Frontier
Deal found 7/16![Frontier logo]()
$167
One-way flights from Washington to DenverSearch for one-way flight options from Washington to Denver. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way flight options from Washington to Denver. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:09 am
GEG
- DEN
1 stop16h 43m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:09 am
GEG
- DEN
1 stop7h 31m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:30 pm
PDX
- DEN
1 stop29h 55m
Frontier
Deal found 7/15![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:59 pm
BLI
- DEN
1 stop6h 16m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$113
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:43 pm
PDX
- DEN
1 stop6h 59m
United Airlines
Deal found 7/14![United Airlines logo]()
$114
This Cheapflightsfares deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Deal found 7/16![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:30 pm
PDX
- DEN
1 stop18h 19m
Frontier
Deal found 7/13![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 pm
GEG
- DEN
2 stops39h 03m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:34 am
SEA
- DEN
1 stop13h 10m
Frontier
Deal found 7/15![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:56 pm
PDX
- DEN
1 stop15h 07m
Frontier
Deal found 7/16![Frontier logo]()
$117
This Frontier deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:06 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Deal found 7/15![Frontier logo]()
$118
This Southwest deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:15 am
SEA
- DEN
Nonstop2h 30m
Southwest
Deal found 7/13![Southwest logo]()
$119
Find flight deals from Washington to Denver
Keep the following information in mind while searching for Washington to Denver flight deals. Data was last updated July 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $163 (Cheapflightsfares) |
One-way from | $100 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $289 |
Good round-trip deal | $297 or less |
Good one-way deal | $176 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 17, 2026.
Use the filters below to find and compare flights from Washington to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BellinghamDenver
BLI - DEN
BLIDEN
Bellingham
Mon 8/3
3:42 pm-3:48 am
1 stop11h 06m
Denver Intl
Thu 8/6
6:10 am-9:07 am
1 stop27h 57m
$219
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sat 9/5
1:15 pm-8:01 pm
1 stop5h 46m
Denver Intl
Tue 9/8
6:00 am-10:40 am
1 stop5h 40m
$237
PortlandDenver
PDX - DEN
PDXDEN
Portland
Wed 9/16
1:05 pm-9:20 pm
2 stops7h 15m
Denver Intl
Tue 9/22
4:00 pm-7:50 pm
1 stop4h 50m
$238
PortlandDenver
PDX - DEN
PDXDEN
Portland
Wed 10/14
5:45 am-11:35 am
1 stop4h 50m
Denver Intl
Fri 10/16
8:05 pm-1:20 am
1 stop6h 15m
$242
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sun 8/30
5:54 pm-11:58 pm
1 stop5h 04m
Denver Intl
Sat 9/12
10:45 am-4:05 pm
1 stop6h 20m
$247
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sun 8/23
5:54 pm-11:58 pm
1 stop5h 04m
Denver Intl
Wed 8/26
1:21 pm-5:14 pm
1 stop4h 53m
$247
PortlandDenver
PDX - DEN
PDXDEN
Portland
Mon 8/24
5:00 am-1:55 pm
2 stops7h 55m
Denver Intl
Sun 8/30
8:55 am-10:30 am
Nonstop2h 35m
$252
EverettDenver
PAE - DEN
PAEDEN
Everett Paine Field
Tue 9/22
12:21 pm-6:32 pm
1 stop5h 11m
Denver Intl
Tue 9/29
8:08 am-11:41 am
1 stop4h 33m
$257
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Tue 9/15
11:10 am-2:50 pm
Nonstop2h 40m
Denver Intl
Mon 9/21
3:40 pm-5:35 pm
Nonstop2h 55m
$257
PortlandDenver
PDX - DEN
PDXDEN
Portland
Fri 9/25
5:10 pm-10:40 pm
1 stop4h 30m
Denver Intl
Mon 9/28
6:00 am-10:40 am
1 stop5h 40m
$257
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Washington with our price prediction graph.
PDX-DEN
SEA-DEN
PSC-DEN
GEG-DEN
PUW-DEN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Denver
USWA-DEN
PDX-DEN
SEA-DEN
PSC-DEN
GEG-DEN
What is the cheapest month to book a flight from State of Washington to Denver?
Currently, October is the cheapest month in which you can book a flight from State of Washington to Denver (average of $202). Flying from State of Washington to Denver in June is currently the most expensive (average of $355). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WA to DEN?
Find hourly flight availability from Washington to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 17, 2026.
One of the essential ways to save on airfare from State of Washington to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 8% on airfare.
Weekly flight availability from State of Washington to Denver
Explore weekly flight availability from Washington to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 17, 2026.
The most flights from USWA to DEN are scheduled on a Thursday (45 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).
How much does it cost to fly round-trip from State of Washington to Denver?
How far ahead should I book a flight from State of Washington to Denver?
Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from State of Washington to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from State of Washington to Denver?
Use this chart to determine the cheapest time to fly round-trip from Washington to Denver. Price data was last updated on July 11, 2026.
Travelers seeking maximum savings on their State of Washington to Denver flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Washington to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Black Hawk
Westminster
Centennial
Lakewood
Broomfield
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Washington to Denver
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Complete your trip
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Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 17, 2026.
Search flights from Washington to Denver by cabin class
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Washington and Denver flights
Browse other Washington and Denver flight options. Last updated on July 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Washington to Denver flights
Consider these flights traveling from Washington to Denver.
Top 7 airlines flying from Washington to Denver
Discover the top 7 airlines that operate flights from Washington to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$164 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$69 | Average$207 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$91 | Average$262 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$108 | Average$348 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$336 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$131 | Average$359 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$200 | Average$328 | FlexibilityNo cancel fee | On-time62% |