$120 Cheap United flights Seattle (SEA) to Dallas (DFW)

View $120 flight on Wed, Oct 22, 2025Opens in a new window

$120 Cheap United flights Seattle (SEA) to Dallas (DFW)

Prices were available within the past 7 days and start at $120 for one-way flights and $211 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 28 - Fri, Oct 31
SEA
Seattle
DFW
Dallas
$211 Roundtrip, found 5 hours ago
$211
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Oct 28 from Seattle to Dallas, returning Fri, Oct 31, priced at $211 found 5 hours ago
United
Tue, Aug 26 - Sun, Aug 31
SEA
Seattle
DFW
Dallas
$222 Roundtrip, found 1 hour ago
$222
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Aug 26 from Seattle to Dallas, returning Sun, Aug 31, priced at $222 found 1 hour ago
United
Wed, Oct 1 - Sat, Oct 4
SEA
Seattle
DFW
Dallas
$231 Roundtrip, found 1 hour ago
$231
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 1 from Seattle to Dallas, returning Sat, Oct 4, priced at $231 found 1 hour ago
United
Tue, Oct 28 - Wed, Oct 29
SEA
Seattle
DFW
Dallas
$234 Roundtrip, found 9 hours ago
$234
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Oct 28 from Seattle to Dallas, returning Wed, Oct 29, priced at $234 found 9 hours ago
United
Tue, Oct 28 - Sat, Nov 1
SEA
Seattle
DFW
Dallas
$244 Roundtrip, found 3 hours ago
$244
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Oct 28 from Seattle to Dallas, returning Sat, Nov 1, priced at $244 found 3 hours ago
Flights from Seattle (SEA) to Dallas (DFW)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Dallas-Fort Worth Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
1657 mi
Average flight time
5 hours 56 mins

Frequently asked questions

How much is a United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Dallas-Fort Worth Intl. Airport (DFW)?
Scoring cheap one-way United Airlines flights from SEA to DFW from $120 on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares from $211 for your next break.**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 SEA to DFW with United Airlines?
Search for round-trip or one-way flights to Dallas in February or January. You could find an affordable fare with United Airlines during these off-season months.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Dallas-Fort Worth Intl. Airport (DFW) with United Airlines?
Start searching one to three months ahead of your departure date to find cheaper fares on United Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Dallas-Fort Worth Intl. Airport (DFW). 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.* Nail your timing, and you can enjoy significant savings on domestic trips.*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 Seattle - Tacoma Intl. Airport (SEA) to Dallas-Fort Worth Intl. Airport (DFW)?
Use the "Nonstop" filter when looking for direct United Airlines flights from SEA to DFW. It's also an easy way to compare other airlines offering the same direct route.
What is the earliest United Airlines flight from SEA to DFW?
Find United Airlines's earliest flights from SEA to DFW by selecting our "Early Morning" and "Morning" filters. Not only will you get to where you're going sooner, early departures also have a 20% less chance of being canceled.**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 Dallas?
Jump on a United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Dallas, and you're most likely to come in to Dallas-Fort Worth Intl. Airport (DFW). This is the airline's primary hub in this destination.
Why fly with United Airlines from SEA to DFW?
Fly from SEA to DFW with United Airlines and enjoy a host of benefits including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to redeem 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 Seattle - Tacoma Intl. Airport (SEA) to Dallas-Fort Worth Intl. Airport (DFW)?
Changes are often free within 24 hours of making a booking, but your airline may charge you after that time. For more details about modifying your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to change your itinerary without additional charges, check the "Changes included" or "No cancel fee" filter when organizing your next break.

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*Available to One Key members.