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$34+ Cheap flights from Denver (DEN) to Washington

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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Denver to Washington

Keep the following information in mind while searching for Denver to Washington flight deals. Data was last updated January 14, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$58
(Frontier)

One-way from

$34
(Priceline)

Popular in

June

Cheapest in

January

Average price

$155

Good round-trip deal

$40 or less

Good one-way deal

$29 or less
Provider with most accurate pricing for Denver Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Seattle/Tacoma Intl flights.
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From Denver Intl to Washington
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One-way flight from Denver Intl to Washington
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Highest demand for flights based on searches. 14% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Denver Intl to Washington.
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Price to beat on a one-way flight from Denver Intl to Washington.
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Find flight deals from Denver to Washington

Cheapest flights from Denver to Washington
Explore the most affordable flight options available from Denver to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This Frontier deal was found by Cheapflights users on 1/11. 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.
Sat 2/149:52 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Sat 2/211:16 pm
SEA
-
DEN
Nonstop2h 51m
Frontier
Deal found 1/11$58
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Thu 4/210:16 am
DEN
-
SEA
Nonstop3h 14m
Frontier
Mon 4/62:54 pm
SEA
-
DEN
Nonstop2h 49m
Frontier
Deal found 1/11$72
This Frontier deal was found by Cheapflights users on 1/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/310:16 am
DEN
-
SEA
Nonstop3h 14m
Frontier
Mon 4/62:54 pm
SEA
-
DEN
Nonstop2h 49m
Frontier
Deal found 1/12$73
This Kiwi.com deal was found by Cheapflights users on 1/13. 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.
Sat 4/119:25 am
DEN
-
SEA
Nonstop3h 12m
Frontier
Mon 4/1312:42 pm
SEA
-
DEN
Nonstop2h 55m
Frontier
Deal found 1/13$76
This Frontier deal was found by Cheapflights users on 1/13. 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.
Thu 2/199:52 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Sun 2/2212:00 pm
SEA
-
DEN
Nonstop2h 51m
Frontier
Deal found 1/13$77
This Cheapflightsfares deal was found by Cheapflights users on 1/12. 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 2/239:10 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Fri 2/2712:00 pm
SEA
-
DEN
Nonstop2h 50m
Frontier
Deal found 1/12$78
This Flightnetwork deal was found by Cheapflights users on 1/12. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:52 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Thu 3/51:16 pm
SEA
-
DEN
Nonstop2h 51m
Frontier
Deal found 1/12$79
This Frontier deal was found by Cheapflights users on 1/11. 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.
Mon 2/169:10 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Mon 2/2312:30 pm
SEA
-
DEN
Nonstop2h 50m
Frontier
Deal found 1/11$83
This Kiwi.com deal was found by Cheapflights users on 1/13. 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 1/299:31 am
DEN
-
GEG
Nonstop2h 37m
Frontier
Sun 2/112:03 pm
GEG
-
DEN
Nonstop2h 23m
Frontier
Deal found 1/13$83
This Frontier deal was found by Cheapflights users on 1/13. 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.
Thu 1/229:31 am
DEN
-
GEG
Nonstop2h 37m
Frontier
Sun 1/2512:03 pm
GEG
-
DEN
Nonstop2h 23m
Frontier
Deal found 1/13$84
This Trip.com deal was found by Cheapflights users on 1/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:52 pm
DEN
-
SEA
Nonstop3h 08m
Multiple Airlines
Fri 3/612:24 pm
SEA
-
DEN
Nonstop2h 51m
Multiple Airlines
Deal found 1/13$85
This Expedia deal was found by Cheapflights users on 1/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/61:37 pm
DEN
-
SEA
Nonstop3h 09m
Multiple Airlines
Sun 2/812:34 pm
SEA
-
DEN
Nonstop2h 51m
Multiple Airlines
Deal found 1/13$88

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Washington 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 January 14, 2026.
Use the filters below to find and compare flights from Denver to Washington that are best for you.

Fly from

Denver

Fly to

Washington

Route

Depart

Return

Price

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 1/22

9:31 am-11:08 am

Nonstop2h 37m

Spokane

Sun 1/25

12:03 pm-3:26 pm

Nonstop2h 23m

$84

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 2/11

6:50 pm-9:10 pm

Nonstop3h 20m

Seattle/Tacoma Intl

Wed 2/18

7:40 pm-11:25 pm

Nonstop2h 45m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 3/11

6:16 pm-8:26 pm

Nonstop3h 10m

Seattle/Tacoma Intl

Mon 3/16

3:16 pm-6:56 pm

Nonstop2h 40m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 2/5

7:45 am-9:55 am

Nonstop3h 10m

Seattle/Tacoma Intl

Sun 2/8

3:30 pm-7:16 pm

Nonstop2h 46m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Fri 3/27

8:50 pm-10:50 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Mon 3/30

5:35 am-9:10 am

Nonstop2h 35m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 3/18

7:24 pm-9:33 pm

Nonstop3h 09m

Seattle/Tacoma Intl

Tue 3/24

7:05 am-10:51 am

Nonstop2h 46m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 2/4

7:00 am-9:11 am

Nonstop3h 11m

Seattle/Tacoma Intl

Sat 2/7

12:30 pm-4:13 pm

Nonstop2h 43m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 2/5

6:40 pm-11:40 pm

1 stop6h 00m

Seattle/Tacoma Intl

Sun 2/8

6:05 am-9:40 am

Nonstop2h 35m

$127

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Fri 2/27

7:45 pm-12:55 am

1 stop6h 10m

Seattle/Tacoma Intl

Mon 3/2

5:15 am-8:50 am

Nonstop2h 35m

$127

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 2/5

11:49 am-6:43 pm

1 stop7h 54m

Seattle/Tacoma Intl

Tue 2/10

8:55 am-12:38 pm

Nonstop2h 43m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 60 results
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Best time to book a flight from Denver to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Denver with our price prediction graph.
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 Denver to Washington

What is the cheapest month to book a flight from Denver to State of Washington?

Currently, February is the cheapest month in which you can book a flight from Denver to State of Washington (average of $48). Flying from Denver to State of Washington in July is currently the most expensive (average of $98). 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 DEN to WA?

Find hourly flight availability from Denver to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 14, 2026.

It’s typically best to fly out from Denver to State of Washington in the morning. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Denver to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from Denver to Washington. Price data was last updated on January 10, 2026.

Travelers seeking maximum savings on their Denver to State of Washington flight should consider departing on Saturday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to State of Washington

Explore weekly flight availability from Denver to Washington. 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 January 14, 2026.

The most flights from DEN to USWA are scheduled on a Monday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated January 14, 2026.
Get a feel of what it's like to fly with Southwest, Alaska Airlines, and Delta from Denver to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,257 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,257 reviews
Southwest
8.0
Very good
4,257 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Alaska Airlines
7.9
Good
11,699 reviews
Southwest
8.0
Very good
4,257 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,039 reviews
Southwest
8.0
Very good
4,257 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,152 reviews
Southwest
8.0
Very good
4,257 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,257 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Denver to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Washington?

    For a flight from Denver to Washington, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

  • How popular is this Denver to State of Washington flight route?

    The Denver Intl to Washington flight path was viewed by 167 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to State of Washington?

    Frontier, Delta, and Alaska Airlines can get you from Denver to State of Washington in just under 2h 37m. Your travel time will be generally consistent. The distance between Denver and State of Washington is about 834 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Denver to State of Washington one-way?

    The cheapest airlines for a one-way flight from Denver to State of Washington are Frontier ($29), Delta ($77), and Southwest ($78).

  • What are the most popular routes from Denver to State of Washington?

    The most popular route from Denver to State of Washington is Denver Intl - Seattle/Tacoma Intl. You may also consider Denver Intl - Portland or Denver Intl - Spokane.

  • What are the most reliable airlines from Denver to State of Washington?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to State of Washington on time: ANA (83%), Frontier (83%), United Airlines (82%).

  • What are the cheapest flights from Denver to State of Washington?

    On average you can expect to pay $902 for a flight from Denver to State of Washington. The cheapest flight overall is $58 while the most popular route, (Denver Intl - Seattle/Tacoma Intl) is currently priced at $85.

  • Can I find deals for flights from Denver to Washington that include hotel bookings?

    Yes. In addition to deals on Denver to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Washington.

  • Can I find deals for business class flights from Denver to Washington?

    Yes. Cheapflights offers flight deals from Denver to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to State of Washington?

    Currently, February is the cheapest month in which you can book a flight from Denver to State of Washington (average of $48). Flying from Denver to State of Washington in July is currently the most expensive (average of $98). 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.

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Alternative routes for Denver to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Denver to Washington

Discover the top 6 airlines that operate flights from Denver to Washington. 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$166FlexibilityNo cancel feeOn-time62%
DeltaCheapest$109Average$247FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$111Average$317FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$117Average$310FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$127Average$346FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$136Average$398FlexibilityNo cancel feeOn-time75%

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