$124 Cheap United flights Fort Myers (RSW) to Seattle (SEA)

View $124 flight on Sun, Aug 24, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$124 Cheap United flights Fort Myers (RSW) to Seattle (SEA)

Prices were available within the past 7 days and start at $124 for one-way flights and $239 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Dec 13 - Tue, Dec 16
RSW
Fort Myers
SEA
Seattle
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 13 from Fort Myers to Seattle, returning Tue, Dec 16, priced at $239 found 2 days ago
United
Sat, Dec 13 - Tue, Dec 16
RSW
Fort Myers
SEA
Seattle
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 13 from Fort Myers to Seattle, returning Tue, Dec 16, priced at $244 found 2 days ago
United
Wed, Sep 17 - Fri, Sep 19
RSW
Fort Myers
SEA
Seattle
$251 Roundtrip, found 4 days ago
$251
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 17 from Fort Myers to Seattle, returning Fri, Sep 19, priced at $251 found 4 days ago
United
Thu, Sep 4 - Sat, Sep 13
RSW
Fort Myers
SEA
Seattle
$252 Roundtrip, just found
$252
Roundtrip
just found
Select United flight, departing Thu, Sep 4 from Fort Myers to Seattle, returning Sat, Sep 13, priced at $252 just found
United
Tue, Aug 26 - Wed, Sep 3
RSW
Fort Myers
SEA
Seattle
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select United flight, departing Tue, Aug 26 from Fort Myers to Seattle, returning Wed, Sep 3, priced at $254 found 2 days ago
United
Wed, Sep 17 - Fri, Sep 19
RSW
Fort Myers
SEA
Seattle
$256 Roundtrip, found 4 days ago
$256
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 17 from Fort Myers to Seattle, returning Fri, Sep 19, priced at $256 found 4 days ago
Flights from Fort Myers (RSW) to Seattle (SEA)
Origin airport
Southwest Florida Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
2620 mi
Average flight time
6 hours 50 mins

Frequently asked questions

How much is a United Airlines flight from Southwest Florida Intl. Airport (RSW) to Seattle - Tacoma Intl. Airport (SEA)?
Finding cheap one-way United Airlines flights from RSW to SEA from $124 on Expedia is simple — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly return fares from $239 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from RSW to SEA with United Airlines?
United Airlines flights to Seattle are usually cheaper in the off-peak months of January and February. Whether you're in search of a return or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Southwest Florida Intl. Airport (RSW) to Seattle - Tacoma Intl. Airport (SEA) with United Airlines?
Start searching one to three months ahead of your travel date to get cheaper fares on United Airlines flights from Southwest Florida Intl. Airport (RSW) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Southwest Florida Intl. Airport (RSW) to Seattle - Tacoma Intl. Airport (SEA)?
Fill in your dates, click search and select "Nonstop" on Expedia to find any direct flights from RSW to SEA with United Airlines or another airline.
What is the earliest United Airlines flight from RSW to SEA?
Search United Airlines's earliest flights from RSW to SEA by selecting our "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Seattle?
Jump on a United Airlines flight from Southwest Florida Intl. Airport (RSW) to Seattle, and you'll likely touch down at Seattle - Tacoma Intl. Airport (SEA). This is the airline's primary hub in this destination.
Why fly with United Airlines from RSW to SEA?
Fly from RSW to SEA with United Airlines and enjoy a range of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you can also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Southwest Florida Intl. Airport (RSW) to Seattle - Tacoma Intl. Airport (SEA)?
Changes are often free within 24 hours of booking, but your airline may charge you after that time. For further information about modifying your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your itinerary without extra charges, tick the "No cancel fee" or "Changes included" filter when planning your next break.

Explore a world of travel with Expedia

*Available to One Key members.