Find cheap Frontier flights to Seattle
RDU — SEA
Nov 11 — Nov 181
Round-trip
1 adult, Economy
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Cheapest Frontier flights from USA to SeattleExplore the most affordable Frontier flight options available from USA to Seattle. Find the lowest fares with prices last updated on October 12, 2026.
Explore the most affordable Frontier flight options available from USA to Seattle. Find the lowest fares with prices last updated on October 12, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/9. 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.
Tue 11/103:24 pm -
Nonstop3h 09m
Sun 11/159:13 pm -
1 stop21h 28m
Deal found 10/9![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Thu 11/123:24 pm -
Nonstop3h 09m
Sat 11/144:27 pm -
1 stop22h 02m
Deal found 10/8![Frontier logo]()
$126
This Mytrip deal was found by Cheapflights users on 10/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:14 pm -
1 stop15h 45m
Fri 11/69:13 pm -
1 stop11h 06m
Deal found 10/9![Frontier logo]()
$127
Best Frontier flights from USA to SeattleDiscover carefully curated Frontier flight deals from USA to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
Discover carefully curated Frontier flight deals from USA to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
This Kissandfly.com deal was found by Cheapflights users on 10/12. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:31 pm -
1 stop24h 27m
Mon 12/72:07 pm -
Nonstop2h 55m
Deal found 10/12![Frontier logo]()
$138
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Wed 11/186:25 am -
1 stop8h 47m
Mon 11/239:53 pm -
1 stop10h 02m
Deal found 10/8![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Wed 11/410:05 am -
1 stop23h 40m
Wed 11/114:27 pm -
1 stop7h 56m
Deal found 10/8![Frontier logo]()
$148
Direct Frontier flights from USA to SeattleExplore non-stop Frontier flight options from USA to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated October 12, 2026.
Explore non-stop Frontier flight options from USA to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated October 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/8. 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.
Sat 10/243:35 pm -
Nonstop3h 10m
Fri 11/67:48 pm -
Nonstop2h 50m
Deal found 10/8![Frontier logo]()
$125
This CheapOair deal was found by Cheapflights users on 10/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:41 pm -
Nonstop3h 13m
Mon 11/27:48 pm -
Nonstop2h 50m
Deal found 10/8![Frontier logo]()
$126
This eDestinos deal was found by Cheapflights users on 10/9. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:35 pm -
Nonstop3h 10m
Thu 10/298:09 pm -
Nonstop2h 50m
Deal found 10/9![Frontier logo]()
$127
Last-minute Frontier flights from USA to SeattleDiscover last-minute Frontier flight deals from USA to Seattle. Data last updated October 12, 2026 and is based on user searches.
Discover last-minute Frontier flight deals from USA to Seattle. Data last updated October 12, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/9. 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.
Tue 11/103:24 pm -
Nonstop3h 09m
Sun 11/159:13 pm -
1 stop21h 28m
Deal found 10/9![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Thu 11/123:24 pm -
Nonstop3h 09m
Sat 11/144:27 pm -
1 stop22h 02m
Deal found 10/8![Frontier logo]()
$126
This Mytrip deal was found by Cheapflights users on 10/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:14 pm -
1 stop15h 45m
Fri 11/69:13 pm -
1 stop11h 06m
Deal found 10/9![Frontier logo]()
$127
One-way Frontier flights to SeattleSearch for one-way Frontier flight options to Seattle. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
Search for one-way Frontier flight options to Seattle. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
This Super.com deal was found by Cheapflights users on 10/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:24 pm -
Nonstop3h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Frontier logo]()
$67
This Travelocity deal was found by Cheapflights users on 10/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:05 am -
1 stop23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Frontier logo]()
$68
This Cheapflightsfares deal was found by Cheapflights users on 10/11. 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 11/73:24 pm -
Nonstop3h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Frontier logo]()
$69
Flights to Seattle with Frontier at a glance
Find detailed information about Frontier flights from USA to Seattle. Explore the options provided by Frontier to plan your journey from USA to Seattle. Data last updated October 12, 2026.
Cheapflights Insights
Find cheap Frontier flights to Seattle
US0-SEA
LAX-SEA
SFO-SEA
SAN-SEA
How long is the flight to Seattle with Frontier?
On average, Frontier flights from the United States to Seattle take 4 hours 38 minutes. Flights to Seattle from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
Frontier weekly flight availability to Seattle
The most flights to Seattle operated by Frontier are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).
When is the best time to book a flight to Seattle with Frontier?
The best time to book a flight to Seattle with Frontier is 46 days before departure. On average, fares are higher if you book on the same day as departure.
When is the cheapest time to fly to Seattle with Frontier?
Users looking for the cheapest Frontier fares to Seattle should consider flying on Tuesday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday afternoons, when prices are usually at their highest.
FAQs about flights to Seattle with Frontier
Reviews of Frontier
See what Cheapflights users have to say about their Frontier experience.
Overview
Reviews
Frontier
2,542 reviews
Overview
Food
4.5
Entertainment
4.2
Crew
6.5
Comfort
5.4
Boarding
5.8
Recent reviews
2.0
|Sep 2026They charge $25 to check in with an agent and the only other option is to install the app, so I installed it just for this one flight. Then the app didn't find my reservation so they sent me to an agent anyway. The agent was unfriendly and printed my boarding pass without tsa pre check, so I had to go through the standard line. Also the flight was delayed two hours.
8.0
|Sep 2026I was traveling with a lap infant and got to TSA only to be turned around saying that something was wrong with my boarding pass. I went to an agent and said nothing was wrong, printed me a board pass and I had to rejoin the line. The when I get to the ticket counter I found out they changed my family seat even though I purchased it prior. I was told I got a refund so I’ll see
2.0
|Jul 2026Flight was delayed a whole day - no compensation on food or drinks. Gate staff gave an older gentleman a hard time about his confusion and concern regarding the overnight delay.
10.0
|Jul 2026Better Food and there was no entertainment . You guys could provide head phones and wifi for the passengers
2.0
|Jul 2026Flight delayed 3 hours
1 out of 848
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