Cheap flights from Seattle to Denver from C$ 59

This is the cheapest one-way flight price, found on 25/9. Prices may vary by date and flight preferences.
SEA — DEN
30 Sep — 7 Oct1
1 adult
Economy
From?
To?
Sat 30/9
Sat 7/10

How to find the cheapest flight from Seattle (SEA) to Denver (DEN)

All the information you need to plan the best SEA to DEN flight in 2023: compare Seattle to Denver flight prices with the expected peak season, weather and rainfall in Denver.

Popular in

June

Cheapest in

January

Round-trip from

C$ 698

One-way from

C$ 74
High demand for flights, 33% potential price rise
Best time to find cheap flights, 38% potential price drop
From Seattle/Tacoma Intl to Denver Intl
One-way flight from Seattle/Tacoma Intl to Denver Intl

SEA - DEN

Price

C$ 518 - C$ 781

DEN

Temperature

-1 - 23 °C

DEN

Rainfall

13 - 58 mm

What is the cheapest day to fly round-trip from Seattle to Denver?

Sunday flights are found to be more expensive to fly from Seattle to Denver. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Denver.

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

Users have found that booking a flight from Seattle to Denver at least 58 days early can save you up to 11% on average compared to booking a flight this week. If booking 58 days before your flight isn’t an option for you, users have found flights from Seattle to Denver for as little as C$ 361 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 395 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Denver?

January can be a great time to fly to Denver from Seattle with a flight ticket averaging about C$ 346. Cheapflights users have found deals in the month of January for as cheap as C$ 147. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Seattle to Denver (SEA - DEN)?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 49% on flights from Seattle to Denver by exploring options for tickets at noon.

Cheap Delta flights from Seattle to Denver

Take a look at some of the lowest-priced Delta flights heading from Seattle to Denver. It's recommended that users confirm their flight details before booking.

Cheap United Airlines flights from Seattle to Denver

Some of the lowest-priced United Airlines flights we've found at this time heading from Seattle to Denver. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Cheap Seattle to Denver flights in September & October 2023

The best prices found for SEA to DEN flights for September, October
These are some of the most attractive deals on flights from Seattle to Denver in 2023. More deals are always being added, so be sure to check back regularly.

Seattle to Denver 2023 flight deals

Cheap flights to Denver from Seattle found for this year
These are some of the most attractive deals on flights from Seattle to Denver in 2023. More deals are always being added, so be sure to check back regularly.

Direct flights to Denver from Seattle

Save time with Seattle to Denver direct flight deals
Take a look at some of the direct flights travelling from Seattle to Denver in the near future. Users seeking other options on flights from Seattle to Denver should update the search form at the top of the page.

Seattle to Denver flights leaving soon

Late deals on round-trip flights to Denver from Seattle, departing today and this week
Users seeking a last-minute flight from Seattle to Denver should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Denver from Seattle

The cheapest one-way flights from Seattle to Denver
If you're seeking multiple options on one-way flights from Seattle to Denver, be sure to check out these deals, which are updated often. Users needing a return flight from Seattle to Denver should utilize the search form above.

Find flights from Seattle to Denver within your budget

Use the slider to find flights from Seattle to Denver that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 108 - C$ 361

Route

Depart

Return

Price

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 7/10

Nonstop2h 45m

Denver Intl

Mon 9/10

1 stop12h 03m

C$ 108

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 14/10

1 stop6h 14m

Denver Intl

Tue 17/10

1 stop12h 22m

C$ 131

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 7/10

Nonstop2h 45m

Denver Intl

Sun 8/10

Nonstop3h 08m

C$ 148

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 7/10

Nonstop2h 45m

Denver Intl

Mon 9/10

2 stops19h 49m

C$ 197

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 4/11

1 stop9h 56m

Denver Intl

Mon 6/11

1 stop12h 22m

C$ 210

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 10/1

Nonstop2h 54m

Denver Intl

Wed 17/1

Nonstop3h 01m

C$ 213

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 11/1

Nonstop2h 39m

Denver Intl

Wed 17/1

Nonstop3h 01m

C$ 240

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 16/12

Nonstop2h 46m

Denver Intl

Wed 20/12

Nonstop3h 11m

C$ 267

Seattle/Tacoma IntlDenver Intl

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 21/11

Nonstop2h 47m

Denver Intl

Sat 25/11

Nonstop3h 09m

C$ 361

Flights are sorted by cheapest first

Deals found on 23/9

Reviews of airlines servicing Denver

Peruse reviews from past customers who have flown with Delta, United Airlines and Spirit Airlines from Seattle to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,393 reviews

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.2

Reviews

1 / 10

Excellent airlines the price was great service was excellent plane was very comfortable

Alaska Airlines
8.1
Very good
1,393 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.2

Reviews

1 / 10

Excellent airlines the price was great service was excellent plane was very comfortable

Delta
7.9
Good
3,021 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.2

Reviews

1 / 10

Excellent airlines the price was great service was excellent plane was very comfortable

United Airlines
7.4
Good
1,890 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.2

Reviews

1 / 10

Excellent airlines the price was great service was excellent plane was very comfortable

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.2

Reviews

1 / 10

Excellent airlines the price was great service was excellent plane was very comfortable

JetBlue
7.2
Good
781 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.2

Reviews

1 / 10

Excellent airlines the price was great service was excellent plane was very comfortable

Related info for your journey

Useful info, stats and facts about Seattle to Denver flights.

What airports do I use to fly from Seattle to Denver?

Booking a flight from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) is your only option if you wish to fly from Seattle to Denver. On a typical day, there are 31 flights from Seattle/Tacoma Intl to Denver Intl, all of which are around 2h 35m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Seattle/Tacoma Intl to Denver.

Can I find flights from Seattle to Denver for under C$ 200 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under C$ 200. The cheapest flight booked recently is on Multiple Airlines for just C$ 108, but on average you can expect to pay C$ 241.

Are there direct flights from Seattle to Denver for under C$ 200 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Denver under C$ 200. A good price for a direct flight from Seattle to Denver is less than C$ 324.

Are there last-minute flights available from Seattle to Denver for under C$ 400?

There are currently 20+ open flights from Seattle to Denver within the next 7 days for less than C$ 400.

What days are direct flights available from Seattle to Denver?

You can find direct flights on the following days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

How popular is this Seattle to Denver flight route?

How many flights depart from Seattle to Denver on average per day?

Per day, 56 flights depart from Seattle to Denver on average.
Early Morning (Midnight to 6am) - 13% of flight departures
Morning (6am - Midday) - 29% of flight departures
Afternoon (Noon - 6pm) - 41% of flight departures
Evening (6pm - Midnight) - 18% of flight departures

How long is the flight from Seattle to Denver?

There are many flights that can get you from Seattle to Denver in 2h 45m. Fly via Spirit Airlines, Frontier, or Delta to get the fastest option. There are 1654 km between Seattle and Denver. This flight may include one or multiple stops.

What are the cheapest airlines flying from Seattle to Denver round-trip?

According to our current data, Spirit Airlines (C$ 131), Frontier (C$ 148), and Delta (C$ 213) offers the cheapest pricing from Seattle to Denver. Users have found that Spirit Airlines is 62% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Seattle to Denver one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as C$ 59. However, be on the lookout for offers from Spirit Airlines and Delta, as they are both options that can get you from Seattle to Denver for a low price.

What are the most popular airlines that fly from Seattle to Denver?

What are the most reliable airlines from Seattle to Denver?

Before booking your flight to Denver from Seattle, check out the most reliable airlines to get you to your destination on time: Air Europa (100%), Kenya Airways (100%), Aerolineas Argentinas( 100%).

What are the cheapest flights from Seattle to Denver?

Looking for the cheapest flight from Seattle to Denver? While on average our users pay C$ 234, our data indicates the cheapest price to be C$ 68. The most popular route (Seattle/Tacoma Intl - Denver Intl), is priced around C$ 108.

What does SEA to DEN mean?

Seattle/Tacoma Intl Airport is SEA and Denver Intl Airport is DEN. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

Top 4 airlines flying from Seattle to Denver

The chart below displays the airlines Cheapflights users travelling from Seattle to Denver choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 81AverageC$ 236FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 99AverageC$ 273FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 106AverageC$ 260FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 189AverageC$ 328FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Hourly flight availability from Seattle to Denver

See what time of day planes typically take off from Seattle to Denver
14%of flight departuresEarly morningMidnight to 6 am
21%of flight departuresMorning6 am to noon
36%of flight departuresAfternoonNoon to 6 pm
29%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Denver

See how many times per day planes take to the skies headed from Seattle to Denver
Sunday31daily flights
Monday37daily flights
Tuesday27daily flights
Wednesday24daily flights
Thursday35daily flights
Friday36daily flights
Saturday29daily flights
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