How do most travelers feel about Frontier?

The general consensus from 4,132 Cheapflights users is that Frontier is a 6.3/10. Select your travel dates above for updated prices on flights from Seattle to Denver (SEA-DEN).

Can I get a flight from Seattle to Denver on Frontier for under $300?

There are 50 flights available on Frontier from Seattle to Denver for under $300. These prices can change based on many factors including date and time. To find SEA-DEN flight prices for your dates, click here.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Fly Frontier from SEA to DEN as low as $34

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Cheapflights users flying from Seattle to Denver on Frontier typically fly into Denver Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Frontier flights from Seattle to Denver in 2024

Popular in	June
Cheapest in	January
Average price (all airlines)	$217
One-way from	$34
Round-trip from	$74

Highest demand for flights from Seattle/Tacoma Intl to Denver Intl; 21% potential price increase.

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Best time to find cheap flights from Seattle/Tacoma Intl to Denver Intl; 3% potential price drop.

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Average price for all Seattle/Tacoma Intl to Denver Intl flights (one-way and round-trip).

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Cheapest one-way Frontier flight from Seattle/Tacoma Intl to Denver Intl

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Cheapest round-trip Frontier flight from Seattle/Tacoma Intl to Denver Intl

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Can I get a flight from Seattle to Denver on Frontier for under $300?
There are 50 flights available on Frontier from Seattle to Denver for under $300. These prices can change based on many factors including date and time. To find SEA-DEN flight prices for your dates, click here.
How do most travelers feel about Frontier?
The general consensus from 4,132 Cheapflights users is that Frontier is a 6.3/10. Select your travel dates above for updated prices on flights from Seattle to Denver (SEA-DEN).

Cheapest Frontier flights from Seattle to Denver

Sat 5/1810:08 pmSEA - DEN

Nonstop2h 53mFrontier

Sun 5/195:01 amDEN - SEA

Nonstop3h 03mFrontier

Deal found 4/27$74

Pick Dates

Tue 5/149:35 pmSEA - DEN

Nonstop2h 50mFrontier

Sun 5/195:01 amDEN - SEA

Nonstop3h 03mFrontier

Deal found 4/27$76

Pick Dates

Tue 5/149:35 pmSEA - DEN

Nonstop2h 50mFrontier

Sun 5/195:01 amDEN - SEA

Nonstop3h 03mFrontier

Deal found 4/27$77

Pick Dates

Direct flights from Seattle to Denver on Frontier

Sat 5/1810:08 pmSEA - DEN

Nonstop2h 53mFrontier

Sun 5/195:01 amDEN - SEA

Nonstop3h 03mFrontier

Deal found 4/27$74

Pick Dates

Tue 5/149:35 pmSEA - DEN

Nonstop2h 50mFrontier

Sun 5/195:01 amDEN - SEA

Nonstop3h 03mFrontier

Deal found 4/27$76

Pick Dates

Tue 5/149:35 pmSEA - DEN

Nonstop2h 50mFrontier

Sun 5/195:01 amDEN - SEA

Nonstop3h 03mFrontier

Deal found 4/27$77

Pick Dates

Last minute deals on Cheapflights

Mon 5/65:02 pmSEA - DEN

Nonstop2h 48mFrontier

Fri 5/176:40 amDEN - SEA

Nonstop3h 05mFrontier

Deal found 4/27$92

Pick Dates

Mon 5/65:02 pmSEA - DEN

Nonstop2h 48mFrontier

Mon 5/135:11 amDEN - SEA

Nonstop3h 09mFrontier

Deal found 4/27$96

Pick Dates

Sat 5/42:55 pmSEA - DEN

Nonstop2h 47mFrontier

Tue 5/76:25 pmDEN - SEA

Nonstop3h 10mFrontier

Deal found 4/26$122

Pick Dates

One-way Frontier flights to Denver from Seattle

Tue 5/149:35 pmSEA - DEN

Nonstop2h 50mFrontier

Deal found 4/27$34

Pick Dates

Tue 5/149:35 pmSEA - DEN

Nonstop2h 50mFrontier

Deal found 4/27$36

Pick Dates

Sat 5/42:55 pmSEA - DEN

Nonstop2h 47mFrontier

Deal found 4/27$38

Pick Dates

Average price of Frontier flights from Seattle to Denver

Currently, the most affordable month to book a Frontier flight from Seattle to Denver in December, with an average price of $193. Conversely, traveling with Frontier from Seattle to Denver in June will be the most expensive, with an average cost of $288. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$220

February

$237

March

$269

April

$206

May

$229

June

$288

July

$282

August

$218

September

$214

October

$194

November

$198

December

$193

Temperature and rainfall in Denver by month

DEN Temperature	30.2 - 73.4 °F

DEN

Temperature

30.2 - 73.4 °F

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Browse thousands of different options on Cheapflights for your next trip

Fly from Seattle to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Alaska Airlines flights from Seattle/Tacoma Intl to Denver Intl

United Airlines flights from Seattle/Tacoma Intl to Denver Intl

Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

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Other popular destinations in North America
If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Flights to New York

Flights to Los Angeles

Flights to Fort Lauderdale

Flights to San Francisco

Popular flights with Frontier
Browse through some of the most popular routes that Frontier offers at this time. Flights are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Frontier flights from Denver Intl to Seattle/Tacoma Intl

Frontier flights from San Francisco to Las Vegas

Frontier flights from Denver to Las Vegas

Frontier flights from Philadelphia to Luis Munoz Marin Intl

Frontier flights from Philadelphia to Orlando

Frontier flights from Dallas/Fort Worth to Denver

Frontier flights from Dallas/Fort Worth to Las Vegas

Frontier flights from Denver to Sky Harbor Intl

Frontier flights from Philadelphia to Tampa

Frontier flights from Philadelphia to Orlando

Frontier flights from Minneapolis to Denver

Frontier flights from Ontario to Las Vegas

Frontier flights from Atlanta to Cancún

Frontier flights from Hartford to Luis Munoz Marin Intl

Frontier flights from San Francisco to Sky Harbor Intl

Frontier flights from Washington, D.C. to Denver

Frontier flights from Atlanta to Denver

Frontier flights from Sky Harbor Intl to Denver

Frontier flights from Atlanta to Miami

Frontier flights from Philadelphia to Atlanta

Frontier flights from Sky Harbor Intl to Las Vegas

Frontier flights from Philadelphia to Miami

Frontier flights from Cleveland to Las Vegas

Frontier flights from Orlando to Luis Munoz Marin Intl

Frontier flights from San Francisco to Denver

Frontier flights from Denver to San Diego

Frontier flights from Cleveland to Tampa

Frontier flights from Chicago to Sky Harbor Intl

Frontier flights from Atlanta to Las Vegas

Frontier flights from Miami to Luis Munoz Marin Intl

Frontier flights from Denver to Cancún

See what others are saying about Frontier

Frontier

6.3

Okay

4,132 reviews

Check prices

Overview

Recent reviews

2.0

Poor|Jan 2022

I never even booked this flight

10.0

Wonderful|Mar 2018

price was right

maybe a little cramped

10.0

Wonderful|Jan 2022

Left on time, arrived early, easy boarding process, comfortable seats for a short flight. Can't beat the price.

8.0

Very good|Jun 2023

Better seat cushions... Staff was awesome

6.0

Okay|Mar 2022

We paid $47 to check one carefully packed 50 lb bag on the way. Our return trip, they charged $65 for the base fee and only then chose to inform us that we would be required to pay an extra ONE HUNDRED DOLLARS - total of $165 one way! A because, since our departure, they had reduced the permissible weight to 40 lbs. ONE HUNDRED ADDITIONAL DOLLARS FOR LESS THAN TEN POUNDS WHEN WE WERE TOLD 50 LBS WAS THE LIMIT. I know their fares are cheap but my lord, their seats are tiny, they nickel and dime EVERYTHING, and they legit steal from you by changing the rules and price-gouging. Gross. I’ll pay more on the front end next time, because at those prices I could’ve flown a non-budget airline and been comfortable and had a damn complimentary water.

1 out of 1378

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Cheapflights users flying from Seattle to Denver on Frontier typically fly into Denver Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Frontier flights from Seattle to Denver in 2024

Find detailed information about Frontier flights from Seattle to Denver. Explore the options provided by Frontier to plan your journey from Seattle to Denver. Data last updated April 27, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Seattle to Denver on Frontier for under $300?

How do most travelers feel about Frontier?

Cheapest Frontier flights from Seattle to Denver

Direct flights from Seattle to Denver on Frontier

Last minute deals on Cheapflights

One-way Frontier flights to Denver from Seattle

Average price of Frontier flights from Seattle to Denver

Plan your Frontier flight from Seattle to Denver by taking into account the cheapest months to travel. The average price of a one-way Frontier flight from Seattle to Denver is currently $36 while a round-trip flight costs $76. Price data was last updated on April 21, 2024.

Temperature and rainfall in Denver by month

Plan your trip to Denver by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Other Frontier flights from Seattle
Browse through other Frontier flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Browse through other Frontier flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Seattle and Denver
Choose from other airlines serving Seattle and Denver.

Choose from other airlines serving Seattle and Denver.

Other popular destinations in North America
If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Popular flights with Frontier
Browse through some of the most popular routes that Frontier offers at this time. Flights are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Browse through some of the most popular routes that Frontier offers at this time. Flights are based on user searches made on Cheapflights and were last updated on April 27, 2024.

See what others are saying about Frontier

Overview

Recent reviews

100% Free

Book with Flexibility

Travel Smart

Flights

Frontier flights from Seattle to Denver (SEA - DEN)

Cheapflights users flying from Seattle to Denver on Frontier typically fly into Denver Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Frontier flights from Seattle to Denver in 2024

Find detailed information about Frontier flights from Seattle to Denver. Explore the options provided by Frontier to plan your journey from Seattle to Denver. Data last updated April 27, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Seattle to Denver on Frontier for under $300?

How do most travelers feel about Frontier?

Cheapest Frontier flights from Seattle to Denver

Direct flights from Seattle to Denver on Frontier

Last minute deals on Cheapflights

One-way Frontier flights to Denver from Seattle

Average price of Frontier flights from Seattle to Denver

Plan your Frontier flight from Seattle to Denver by taking into account the cheapest months to travel. The average price of a one-way Frontier flight from Seattle to Denver is currently $36 while a round-trip flight costs $76. Price data was last updated on April 21, 2024.

Temperature and rainfall in Denver by month

Plan your trip to Denver by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Denver on another airlineConsider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.

See what others are saying about Frontier

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Seattle to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on April 27, 2024.