What airlines fly to Denver?

Frontier, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Denver from State of Washington according to our data. Frontier is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

How many flights depart from State of Washington to Denver on average per day?

40 flights are operational daily from State of Washington to Denver as of March 2026. The most popular departure time for this route is 1:00PM, with 36% of flights per day taking off in the afternoon.

How many flights depart from State of Washington to Denver on average per week?

284 flights are operational weekly from State of Washington to Denver as of March 2026. The most popular departure day for this route is Mon, with 21% of flights per week taking off on this day.

What is the cheapest airline that flies from Washington to Denver Intl?

Frontier, Southwest, and Alaska Airlines are the most popular carriers operating from Washington to Denver Intl

How long does it take to fly to Denver?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Denver you fly into. For example, flying from Spokane to Denver takes 2h 14m on average. On the other hand, flying from Pasco to Denver takes 2h 22m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

When did momondo last update prices for flights from Washington to Denver Intl Airport?

Prices for flights from Washington to Denver Intl Airport refresh daily.

How many operators does momondo search for flights from Washington to Denver Intl Airport?

As of March 2026, there are 6 operators available to choose from for flights from Washington to Denver Intl Airport.

How old do you have to be to fly from Washington to Denver Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The necessary travel and health documents for your Denver Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$52 Cheap Flights from Washington to Denver in 2026

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:12 pm - 10:59 pm

SEA

DEN

2h 47mnonstop

7:40 am - 9:52 am

DEN

SEA

3h 12mnonstop

$91Frontier

Tue, Apr 14 - Fri, Apr 17

7:12 pm - 10:59 pm

SEA

DEN

2h 47mnonstop

7:15 am - 9:27 am

DEN

SEA

3h 12mnonstop

$92Frontier

Fri, Apr 24 - Wed, Apr 29

7:12 pm - 10:59 pm

SEA

DEN

2h 47mnonstop

7:15 am - 9:27 am

DEN

SEA

3h 12mnonstop

$93Frontier

Tue, Apr 21 - Tue, Apr 28

7:12 pm - 10:59 pm

SEA

DEN

2h 47mnonstop

7:15 am - 9:27 am

DEN

SEA

3h 12mnonstop

$94Frontier

Tue, Apr 28 - Sat, May 2

9:14 pm - 12:09 am

PSC

DEN

25h 55m

1 stop

7:40 am - 2:40 pm

DEN

PSC

8h 00m

1 stop

$197Multiple Airlines

Mon, May 4 - Thu, May 7

9:19 pm - 1:32 pm

GEG

DEN

15h 13m

2 stops

10:29 pm - 8:29 pm

DEN

GEG

23h 00m

1 stop

$213Multiple Airlines

Sun, Apr 26 - Wed, Apr 29

5:13 pm - 10:29 pm

PSC

DEN

4h 16m

1 stop

6:27 pm - 11:44 pm

DEN

PSC

6h 17m

1 stop

$289Delta

Fri, May 1 - Tue, May 5

6:28 pm - 12:06 pm

PAE

DEN

16h 38m

2 stops

1:02 pm - 9:49 am

DEN

PAE

21h 47m

2 stops

$301Alaska Airlines

Tue, Apr 21 - Tue, Apr 28

5:35 pm - 11:32 pm

PSC

DEN

4h 57m

1 stop

7:40 pm - 11:47 pm

DEN

PSC

5h 07m

1 stop

$309Delta

Sat, Apr 4 - Sat, Apr 11

12:33 pm - 6:12 pm

PAE

DEN

4h 39m

1 stop

8:00 am - 11:53 am

DEN

PAE

4h 53m

1 stop

$315Alaska Airlines

Sat, Aug 22 - Tue, Aug 25

United Airlines flights from State of Washington to Denver

Our best United Airlines deals on State of Washington to Denver flight tickets

United Airlines

Jun 3

SEA3:40 pmSeattle/Tacoma Intl

2h 49m

DEN7:29 pmDenver Intl

Jun 7

DEN6:00 amDenver Intl

3h 00m

SEA8:00 amSeattle/Tacoma Intl

$137

United Airlines

Apr 22

PSC5:00 amPasco Tri Cities

2h 29m

DEN8:29 amDenver Intl

Apr 29

DEN7:28 pmDenver Intl

2h 33m

PSC9:01 pmPasco Tri Cities

$269

United Airlines

Aug 4

PSC5:14 amPasco Tri Cities

2h 22m

DEN8:36 amDenver Intl

Aug 8

DEN7:24 pmDenver Intl

2h 28m

PSC8:52 pmPasco Tri Cities

$281

Frontier flights from State of Washington to Denver

Our best Frontier deals on State of Washington to Denver flight tickets

Frontier

Apr 14

SEA7:12 pmSeattle/Tacoma Intl

2h 47m

DEN10:59 pmDenver Intl

Apr 17

DEN7:40 amDenver Intl

3h 12m

SEA9:52 amSeattle/Tacoma Intl

$91

Frontier

Apr 24

SEA7:12 pmSeattle/Tacoma Intl

2h 47m

DEN10:59 pmDenver Intl

Apr 29

DEN7:15 amDenver Intl

3h 12m

SEA9:27 amSeattle/Tacoma Intl

$92

Frontier

Apr 21

SEA7:12 pmSeattle/Tacoma Intl

2h 47m

DEN10:59 pmDenver Intl

Apr 28

DEN7:15 amDenver Intl

3h 12m

SEA9:27 amSeattle/Tacoma Intl

$93

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 4/14

7:12 pm-10:59 pm

Nonstop2h 47m

Denver Intl

Fri 4/17

7:40 am-9:52 am

Nonstop3h 12m

$91

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 4/24

7:12 pm-10:59 pm

Nonstop2h 47m

Denver Intl

Wed 4/29

7:15 am-9:27 am

Nonstop3h 12m

$92

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 4/21

7:12 pm-10:59 pm

Nonstop2h 47m

Denver Intl

Tue 4/28

7:15 am-9:27 am

Nonstop3h 12m

$93

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 4/28

7:12 pm-10:59 pm

Nonstop2h 47m

Denver Intl

Sat 5/2

7:15 am-9:27 am

Nonstop3h 12m

$94

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Mon 5/4

9:14 pm-12:09 am

1 stop25h 55m

Denver Intl

Thu 5/7

7:40 am-2:40 pm

1 stop8h 00m

$197

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Sun 4/26

9:19 pm-1:32 pm

2 stops15h 13m

Denver Intl

Wed 4/29

10:29 pm-8:29 pm

1 stop23h 00m

$213

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Fri 5/1

5:13 pm-10:29 pm

1 stop4h 16m

Denver Intl

Tue 5/5

6:27 pm-11:44 pm

1 stop6h 17m

$289

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Tue 4/21

6:28 pm-12:06 pm

2 stops16h 38m

Denver Intl

Tue 4/28

1:02 pm-9:49 am

2 stops21h 47m

$301

PascoDenver

PSC - DEN

PSCDEN

Pasco Tri Cities

Sat 4/4

5:35 pm-11:32 pm

1 stop4h 57m

Denver Intl

Sat 4/11

7:40 pm-11:47 pm

1 stop5h 07m

$309

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Sat 8/22

12:33 pm-6:12 pm

1 stop4h 39m

Denver Intl

Tue 8/25

8:00 am-11:53 am

1 stop4h 53m

$315

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from State of Washington is in January. Flight prices, which tend to average around $159, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until October to fly from State of Washington, when ticket prices are also cheap, with an average price of $195.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Friday when prices can be found for as low as $271. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $331.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $244. Flights in the morning are often more expensive with an average ticket price of $314.

What is the cheapest Washington to Denver Intl flight route?

Fly from Seattle/Tacoma Intl to Denver Intl for the best Washington - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $211 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from State of Washington for as low as $173 on momondo.

What cabin class options are available on Washington to Denver Intl flights?

There are 4 cabin classes available to choose from on Washington to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Denver flights?

No. A direct flight is the cheapest option for a flight between State of Washington to Denver.

Cheap State of Washington to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Denver

Best Price Found	$150
Fastest flight time	2h 14m
Direct flights	Every day
Airports in Denver	1 airport

The best one-way flight to Denver from State of Washington in the past 72 hours is $150. The best round-trip flight deal from State of Washington to Denver found on momondo in the last 72 hours is $192.

The fastest flight from State of Washington to Denver takes 2h 14m

Direct flights go from State of Washington to Denver every day.

There is 1 airport in Denver. From State of Washington there are direct flights to Denver Intl (DEN).

Search flight deals

When did momondo last update prices for flights from Washington to Denver Intl Airport?
Prices for flights from Washington to Denver Intl Airport refresh daily.
How many operators does momondo search for flights from Washington to Denver Intl Airport?
As of March 2026, there are 6 operators available to choose from for flights from Washington to Denver Intl Airport.
How old do you have to be to fly from Washington to Denver Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The necessary travel and health documents for your Denver Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Denver?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Denver is Boeing 737 MAX 8, representing 18.40% of all bookings. The subsequent popular models are Boeing 737 MAX 9 at 13.78%, Boeing 737-800 at 11.33%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 9.01%.

Best airlines flying from State of Washington to Denver

Compare and see reviews for airlines that fly from State of Washington to Denver with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $57	Free Cancellation	Rating 5.7 3,017 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $78	Free Cancellation	Rating 7.8 2,840 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $97	Free Cancellation	Rating 7.9 8,327 reviews	Search Delta flights
Alaska Airlines	PriceFrom $110	Free Cancellation	Rating 7.9 12,107 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $117	Free Cancellation	Rating 8.0 4,332 reviews	Search Southwest flights
United Airlines	PriceFrom $129	Free Cancellation	Rating 7.4 9,476 reviews	Search United Airlines flights

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Longmont

Boulder

Greeley

Keystone

Cripple Creek

Lakewood

Westminster

Thornton

Frisco

Grand Lake

Winter Park

Centennial

Englewood

Copper Mountain

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Denver?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Denver. momondo saves you time and could save you money on your trip.

Can I find flights from Washington to Denver with flexible booking policies on momondo?

momondo does allow users to show only those flights to Denver from Washington which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington to Denver?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Denver from Washington.

I’m not ready to book a flight from Washington to Denver right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington to Denver flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Washington to Denver from $52

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Denver departing on 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from State of Washington to Denver

What is the cheapest month to fly to Denver?

What is the cheapest day to depart on your flight to Denver?

What is the cheapest time of day to depart on your flight to Denver?

What is the cheapest Washington to Denver Intl flight route?

How far in advance should I book a flight to Denver?

What cabin class options are available on Washington to Denver Intl flights?

Can stopping save me money on State of Washington to Denver flights?

What is the cheapest airline that flies from Washington to Denver Intl?

What airlines fly to Denver?

How many flights depart from State of Washington to Denver on average per day?

How many flights depart from State of Washington to Denver on average per week?

How long does it take to fly to Denver?

Cheap State of Washington to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Denver

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

Best airlines flying from State of Washington to Denver

Compare and see reviews for airlines that fly from State of Washington to Denver with momondo

Traveling to a place near Denver?

Why use momondo?

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to the United States

Airports servicing Colorado

Fly your favorite airline to Denver

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denver

List of cabin classes available on flights landing in Denver. Availability may vary depending on flight origin and airline.

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