$139 Cheap Delta flights Houston (IAH) to Seattle (SEA)

View $139 flight on Wed, Aug 13, 2025Opens in a new window

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$139 Cheap Delta flights Houston (IAH) to Seattle (SEA)

Prices were available within the past 7 days and start at $139 for one-way flights and $236 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 16 - Tue, Aug 26
IAH
Houston
SEA
Seattle
$236 Roundtrip, found 5 hours ago
$236
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Aug 16 from Houston to Seattle, returning Tue, Aug 26, priced at $236 found 5 hours ago
Flights from Houston (IAH) to Seattle (SEA)
Origin airport
George Bush Intercontinental
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Spirit Airlines, United
Popular airline
Alaska Airlines
Distance
1871 mi
Average flight time
2 hours 45 mins

Frequently asked questions

How much is a Delta Air Lines flight from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
Finding cheap one-way Delta Air Lines flights from IAH to SEA from $139 on Expedia is easy --- just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $236 for your next adventure.**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 IAH to SEA with Delta Air Lines?
January is one of the most affordable months to jet away to Seattle with Delta Air Lines. You could also find fantastic deals on one-way and round-trip tickets in February.
What is the cheapest time to book flights from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines?
For cheap Delta Air Lines fares from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the cost. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**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 Delta Air Lines fly nonstop from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
Click on the "Nonstop" filter when browsing for direct Delta Air Lines flights from IAH to SEA. It's also a good way to compare other airlines offering the same direct route.
What is the earliest Delta Air Lines flight from IAH to SEA?
To find the earliest departure from IAH to SEA with Delta Air Lines, sort your results by "Morning" and "Early Morning." Booking an early flight generally means you'll experience 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 Delta Air Lines fly into in Seattle?
Delta Air Lines flights from George Bush Intercontinental Airport (IAH) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA). This is the main gateway here.
Why fly with Delta Air Lines from IAH to SEA?
Delta Air Lines makes traveling from IAH to SEA enjoyable with an excellent in-flight experience and a rewarding loyalty program. You could even start earning points with Delta SkyMiles. Be sure to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*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 Delta Air Lines flight from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
Changes are generally free within 24 hours of making a booking, but your airline may charge a fee after that. For more details about altering your flights, go to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to make changes without additional charges, tick the "No cancel fee" or "Changes included" filter when planning your next escape.

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