$70+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Jun 12 — Jun 191
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 May 13, 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 May 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 6/18:20 pm
SEA
- DEN
1 stop6h 05m
Frontier
Tue 6/97:45 am
DEN
- SEA
Nonstop3h 03m
Frontier
Deal found 5/10![Frontier logo]()
$133
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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.
Wed 5/277:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Tue 6/97:45 am
DEN
- SEA
Nonstop3h 03m
Frontier
Deal found 5/9![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 5/13. 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.
Wed 6/311:21 am
SEA
- DEN
1 stop7h 45m
Frontier
Tue 6/912:14 pm
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 5/13![Frontier logo]()
$139
This Cheapflightsfares deal was found by Cheapflights users on 5/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 6/247:45 am
DEN
- SEA
Nonstop3h 03m
Frontier
Deal found 5/13![Frontier logo]()
$141
This deal was found by Cheapflights users on 5/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:41 pm
SEA
- DEN
Nonstop2h 53m
Frontier
Tue 10/207:45 am
DEN
- SEA
Nonstop3h 06m
Frontier
Deal found 5/8![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/17:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 6/37:01 pm
DEN
- SEA
1 stop16h 35m
Frontier
Deal found 5/8![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 5/11. 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 6/67:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 6/108:44 am
DEN
- SEA
1 stop11h 13m
Frontier
Deal found 5/11![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/47:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Mon 6/810:29 pm
DEN
- SEA
1 stop13h 06m
Frontier
Deal found 5/13![Frontier logo]()
$149
This Super.com deal was found by Cheapflights users on 5/11. 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.
Sat 6/67:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Mon 6/157:45 am
DEN
- SEA
Nonstop3h 03m
Frontier
Deal found 5/11![Frontier logo]()
$151
This Cheapflightsfares deal was found by Cheapflights users on 5/11. 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 6/67:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Mon 6/84:07 pm
DEN
- SEA
1 stop19h 28m
Frontier
Deal found 5/11![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 5/10. 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 6/37:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Sat 6/68:41 am
DEN
- SEA
1 stop11h 24m
Frontier
Deal found 5/10![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 5/13. 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.
Tue 6/211:21 am
SEA
- DEN
1 stop7h 45m
Frontier
Tue 6/912:14 pm
DEN
- SEA
Nonstop3h 04m
Frontier
Deal found 5/13![Frontier logo]()
$154
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 May 13, 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 May 13, 2026.
This United Airlines deal was found by Cheapflights users on 5/9. 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 5/305:07 am
SEA
- DEN
Nonstop2h 43m
United Airlines
Wed 6/36:00 am
DEN
- SEA
Nonstop2h 56m
United Airlines
Deal found 5/9![United Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 5/9. 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 6/83:26 pm
PDX
- DEN
1 stop7h 20m
Delta
Tue 6/96:30 am
DEN
- PDX
1 stop5h 09m
Delta
Deal found 5/9![Delta logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 7/256:04 pm
PDX
- DEN
Nonstop2h 36m
Alaska Airlines
Thu 7/307:05 pm
DEN
- PDX
Nonstop2h 45m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 5/11. 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 8/47:50 am
PDX
- DEN
2 stops8h 20m
Southwest
Tue 8/119:05 am
DEN
- PDX
2 stops8h 05m
Southwest
Deal found 5/11![Southwest logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Fri 5/296:59 pm
BLI
- DEN
1 stop17h 37m
Multiple Airlines
Tue 6/210:39 pm
DEN
- BLI
2 stops35h 35m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 5/11. 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.
Wed 6/175:50 pm
PDX
- DEN
1 stop4h 56m
Delta
Mon 6/295:40 am
DEN
- PDX
1 stop3h 59m
Delta
Deal found 5/11![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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.
Fri 6/57:01 am
GEG
- DEN
1 stop15h 48m
Alaska Airlines
Mon 6/86:40 am
DEN
- GEG
1 stop16h 05m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 5/8. 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 7/283:30 pm
PDX
- DEN
1 stop7h 14m
Delta
Fri 7/316:39 pm
DEN
- PDX
1 stop6h 15m
Delta
Deal found 5/8![Delta logo]()
$277
This Southwest deal was found by Cheapflights users on 5/12. 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.
Mon 6/85:35 pm
SEA
- DEN
1 stop6h 05m
Southwest
Wed 6/105:30 pm
DEN
- SEA
2 stops7h 00m
Southwest
Deal found 5/12![Southwest logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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.
Sat 6/61:53 pm
PSC
- DEN
1 stop6h 58m
Alaska Airlines
Wed 6/106:02 am
DEN
- PSC
1 stop4h 51m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 5/11. 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 7/163:36 pm
PSC
- DEN
1 stop7h 08m
Delta
Sun 7/195:40 am
DEN
- PSC
1 stop4h 21m
Delta
Deal found 5/11![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 5/8. 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 9/165:50 am
PDX
- DEN
2 stops8h 55m
Southwest
Sat 9/1910:25 am
DEN
- PDX
1 stop7h 25m
Southwest
Deal found 5/8![Southwest logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 6/83:02 pm
SEA
- DEN
1 stop7h 47m
Alaska Airlines
Tue 6/92:19 pm
DEN
- SEA
1 stop8h 11m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 6/165:00 am
GEG
- DEN
Nonstop2h 20m
United Airlines
Thu 6/181:46 pm
DEN
- GEG
Nonstop2h 26m
United Airlines
Deal found 5/12![United Airlines logo]()
$376
This Delta deal was found by Cheapflights users on 5/11. 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.
Wed 8/263:24 pm
PSC
- DEN
1 stop7h 34m
Delta
Sun 8/306:18 pm
DEN
- PSC
1 stop6h 07m
Delta
Deal found 5/11![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 5/9. 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.
Thu 6/45:35 pm
SEA
- DEN
1 stop6h 05m
Southwest
Sun 6/75:00 pm
DEN
- SEA
2 stops7h 55m
Southwest
Deal found 5/9![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 5/12. 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 7/301:50 pm
PSC
- DEN
1 stop5h 11m
Delta
Sun 8/26:30 am
DEN
- PSC
1 stop6h 13m
Delta
Deal found 5/12![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Sun 8/25:14 am
PSC
- DEN
Nonstop2h 22m
United Airlines
Wed 8/127:10 pm
DEN
- PSC
Nonstop2h 27m
United Airlines
Deal found 5/10![United Airlines logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 10/1411:27 am
PUW
- DEN
1 stop5h 33m
Alaska Airlines
Sat 10/176:56 pm
DEN
- PUW
1 stop6h 00m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 5/8. 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 5/278:25 am
SEA
- DEN
1 stop7h 05m
Southwest
Wed 7/15:30 pm
DEN
- SEA
2 stops7h 00m
Southwest
Deal found 5/8![Southwest logo]()
$346
This Delta deal was found by Cheapflights users on 5/10. 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 8/23:36 pm
PSC
- DEN
1 stop7h 08m
Delta
Wed 8/125:18 am
DEN
- PSC
1 stop4h 40m
Delta
Deal found 5/10![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 5/8. 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 7/185:14 am
PSC
- DEN
Nonstop2h 22m
United Airlines
Thu 7/237:24 pm
DEN
- PSC
Nonstop2h 28m
United Airlines
Deal found 5/8![United Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 5/305:00 am
GEG
- DEN
2 stops13h 11m
Alaska Airlines
Wed 6/36:40 am
DEN
- GEG
1 stop16h 05m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 5/9. 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 9/185:45 pm
PSC
- DEN
1 stop4h 45m
Delta
Mon 9/216:25 pm
DEN
- PSC
1 stop6h 11m
Delta
Deal found 5/9![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 5/12. 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.
Tue 6/307:30 am
SEA
- DEN
2 stops7h 20m
Southwest
Mon 7/68:35 pm
DEN
- SEA
1 stop5h 15m
Southwest
Deal found 5/12![Southwest logo]()
$350
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 8/512:33 pm
PAE
- DEN
1 stop4h 36m
Alaska Airlines
Tue 8/118:00 am
DEN
- PAE
1 stop4h 53m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 5/11. 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 8/261:37 pm
GEG
- DEN
Nonstop2h 19m
United Airlines
Sun 8/307:50 pm
DEN
- GEG
Nonstop2h 24m
United Airlines
Deal found 5/11![United Airlines logo]()
$406
This Southwest deal was found by Cheapflights users on 5/11. 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 7/62:25 pm
SEA
- DEN
1 stop7h 30m
Southwest
Sat 7/114:10 pm
DEN
- SEA
2 stops8h 00m
Southwest
Deal found 5/11![Southwest logo]()
$350
This Delta deal was found by Cheapflights users on 5/9. 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 5/295:30 pm
PSC
- DEN
1 stop5h 22m
Delta
Mon 6/15:30 am
DEN
- PSC
1 stop4h 49m
Delta
Deal found 5/9![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Thu 7/235:14 am
PSC
- DEN
Nonstop2h 22m
United Airlines
Mon 7/276:00 am
DEN
- PSC
1 stop6h 27m
United Airlines
Deal found 5/12![United Airlines logo]()
$417
Last-minute flights from Washington to DenverDiscover last-minute flight deals from Washington to Denver. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Denver. Data last updated May 13, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Thu 5/288:00 am
DEN
- SEA
Nonstop3h 06m
Frontier
Deal found 5/12![Frontier logo]()
$242
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 6/108:44 am
DEN
- SEA
1 stop11h 13m
Frontier
Deal found 5/12![Frontier logo]()
$243
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 5/207:50 am
DEN
- SEA
Nonstop2h 59m
Frontier
Deal found 5/12![Frontier logo]()
$246
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 5/207:50 am
DEN
- SEA
Nonstop2h 59m
Frontier
Deal found 5/12![Frontier logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Tue 5/197:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Wed 5/2710:39 pm
DEN
- SEA
1 stop20h 56m
Frontier
Deal found 5/11![Frontier logo]()
$241
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Fri 5/2912:00 pm
DEN
- SEA
Nonstop3h 01m
Frontier
Deal found 5/12![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 5/11. 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 5/207:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Mon 5/258:00 am
DEN
- SEA
Nonstop3h 06m
Frontier
Deal found 5/11![Frontier logo]()
$233
This Frontier deal was found by Cheapflights users on 5/11. 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.
Thu 5/213:19 pm
SEA
- DEN
Nonstop2h 59m
Frontier
Tue 6/167:45 am
DEN
- SEA
Nonstop3h 03m
Frontier
Deal found 5/11![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 5/11. 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.
Thu 5/213:19 pm
SEA
- DEN
Nonstop2h 59m
Frontier
Wed 6/108:44 am
DEN
- SEA
1 stop11h 13m
Frontier
Deal found 5/11![Frontier logo]()
$244
This Trip.com deal was found by Cheapflights users on 5/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/223:19 pm
SEA
- DEN
Nonstop2h 59m
Frontier
Fri 6/58:00 am
DEN
- SEA
Nonstop3h 06m
Frontier
Deal found 5/7![Frontier logo]()
$226
This Cheapflightsfares deal was found by Cheapflights users on 5/8. 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.
Fri 5/225:31 pm
PDX
- DEN
1 stop25h 35m
Frontier
Fri 6/1210:39 pm
DEN
- PDX
1 stop14h 02m
Frontier
Deal found 5/8![Frontier logo]()
$239
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/311:41 am
PSC
- DEN
1 stop9h 10m
Alaska Airlines
Wed 6/106:02 am
DEN
- PSC
1 stop4h 51m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$249
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 May 13, 2026.
Search for one-way flight options from Washington to Denver. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:41 pm
SEA
- DEN
Nonstop2h 55m
Frontier
Deal found 5/10![Frontier logo]()
$70
This Super.com deal was found by Cheapflights users on 5/11. 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.
Wed 9/97:00 am
SEA
- DEN
Nonstop2h 51m
Frontier
Deal found 5/11![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:20 pm
SEA
- DEN
1 stop27h 18m
Frontier
Deal found 5/10![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Tue 10/137:41 pm
SEA
- DEN
Nonstop2h 53m
Frontier
Deal found 5/12![Frontier logo]()
$82
This Frontier deal was found by Cheapflights users on 5/10. 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 11/77:41 pm
SEA
- DEN
Nonstop2h 53m
Frontier
Deal found 5/10![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 5/9. 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.
Tue 6/98:12 pm
SEA
- DEN
1 stop6h 46m
Frontier
Deal found 5/9![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Sat 7/187:41 pm
SEA
- DEN
Nonstop2h 52m
Frontier
Deal found 5/12![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 5/10. 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.
Tue 6/167:41 pm
SEA
- DEN
Nonstop2h 55m
Frontier
Deal found 5/10![Frontier logo]()
$88
This WAYA deal was found by Cheapflights users on 5/8. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:20 pm
SEA
- DEN
1 stop6h 05m
Frontier
Deal found 5/8![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Deal found 5/12![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 5/11. 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.
Wed 5/277:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Deal found 5/11![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 5/10. 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.
Sat 5/237:50 pm
SEA
- DEN
Nonstop3h 04m
Frontier
Deal found 5/10![Frontier logo]()
$93
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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $70 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $248 |
Good round-trip deal | $253 or less |
Good one-way deal | $141 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 May 13, 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
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sat 5/30
5:07 am-8:50 am
Nonstop2h 43m
Denver Intl
Wed 6/3
6:00 am-7:56 am
Nonstop2h 56m
$217
PortlandDenver
PDX - DEN
PDXDEN
Portland
Mon 6/8
3:26 pm-11:46 pm
1 stop7h 20m
Denver Intl
Tue 6/9
6:30 am-10:39 am
1 stop5h 09m
$247
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sat 7/25
6:04 pm-9:40 pm
Nonstop2h 36m
Denver Intl
Thu 7/30
7:05 pm-8:50 pm
Nonstop2h 45m
$277
PortlandDenver
PDX - DEN
PDXDEN
Portland
Wed 6/17
5:50 pm-11:46 pm
1 stop4h 56m
Denver Intl
Mon 6/29
5:40 am-8:39 am
1 stop3h 59m
$277
PortlandDenver
PDX - DEN
PDXDEN
Portland
Tue 7/28
3:30 pm-11:44 pm
1 stop7h 14m
Denver Intl
Fri 7/31
6:39 pm-11:54 pm
1 stop6h 15m
$277
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Fri 6/5
7:01 am-11:49 pm
1 stop15h 48m
Denver Intl
Mon 6/8
6:40 am-9:45 pm
1 stop16h 05m
$289
PascoDenver
PSC - DEN
PSCDEN
Pasco Tri Cities
Thu 7/16
3:36 pm-11:44 pm
1 stop7h 08m
Denver Intl
Sun 7/19
5:40 am-9:01 am
1 stop4h 21m
$289
PascoDenver
PSC - DEN
PSCDEN
Pasco Tri Cities
Wed 8/26
3:24 pm-11:58 pm
1 stop7h 34m
Denver Intl
Sun 8/30
6:18 pm-11:25 pm
1 stop6h 07m
$289
PascoDenver
PSC - DEN
PSCDEN
Pasco Tri Cities
Thu 7/30
1:50 pm-8:01 pm
1 stop5h 11m
Denver Intl
Sun 8/2
6:30 am-11:43 am
1 stop6h 13m
$289
PascoDenver
PSC - DEN
PSCDEN
Pasco Tri Cities
Sun 8/2
3:36 pm-11:44 pm
1 stop7h 08m
Denver Intl
Wed 8/12
5:18 am-8:58 am
1 stop4h 40m
$289
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.
SEA-DEN
PDX-DEN
PSC-DEN
BLI-DEN
GEG-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
SEA-DEN
PDX-DEN
PSC-DEN
BLI-DEN
How far ahead should I book a flight from State of Washington to Denver?
Booking 65 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 month to book a flight from State of Washington to Denver?
Currently, September is the cheapest month in which you can book a flight from State of Washington to Denver (average of $215). Flying from State of Washington to Denver in March is currently the most expensive (average of $345). 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 May 13, 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 at noon tend to be the most expensive. A flight in the evening could potentially save you up to 8% on airfare.
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 May 9, 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. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 May 13, 2026.
The most flights from USWA to DEN are scheduled on a Tuesday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from State of Washington to Denver?
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
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
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
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
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 May 13, 2026.
Search flights from Washington to Denver by cabin class
Find flights from Washington to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Denver flights
Browse other Washington and Denver flight options. Last updated on May 13, 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 6 airlines flying from Washington to Denver
Discover the top 6 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 May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$70 | Average$355 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$93 | Average$252 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$108 | Average$355 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$318 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$130 | Average$337 | FlexibilityNo cancel fee | On-time69% |