Best Flight From Washington Dulles Intl. To SEA

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Amazing IAD to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. were $254 for round trip flights and $142 for one-way flights in the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 16 - Wed, Sep 23
IAD
Washington
SEA
Seattle
$254 Roundtrip, found 4 days ago
$254
Roundtrip
found 4 days ago
Select Bargain Flight flight, departing Wed, Sep 16 from Washington to Seattle, returning Wed, Sep 23, priced at $254 found 4 days ago
Wed, Sep 16 - Wed, Sep 23
IAD
Washington
SEA
Seattle
$261 Roundtrip, found 4 days ago
$261
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Sep 16 from Washington to Seattle, returning Wed, Sep 23, priced at $261 found 4 days ago
Wed, Sep 16 - Mon, Sep 21
IAD
Washington
SEA
Seattle
$264 Roundtrip, found 2 days ago
$264
Roundtrip
found 2 days ago
Select Bargain Flight flight, departing Wed, Sep 16 from Washington to Seattle, returning Mon, Sep 21, priced at $264 found 2 days ago
Wed, Aug 26 - Sat, Sep 5
IAD
Washington
SEA
Seattle
$269 Roundtrip, just found
$269
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Aug 26 from Washington to Seattle, returning Sat, Sep 5, priced at $269 just found
Wed, Sep 16 - Mon, Sep 21
IAD
Washington
SEA
Seattle
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 16 from Washington to Seattle, returning Mon, Sep 21, priced at $279 found 2 days ago
Wed, Sep 16 - Wed, Sep 23
IAD
Washington
SEA
Seattle
$281 Roundtrip, found 4 days ago
$281
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Sep 16 from Washington to Seattle, returning Wed, Sep 23, priced at $281 found 4 days ago

Hotels near Seattle - Tacoma Intl. Airport (SEA)

DoubleTree by Hilton Seattle Airport

DoubleTree by Hilton Seattle Airport

4 out of 5
18740 International Boulevard SeaTac WA
The price is $183 total per night from Jul 28 to Jul 29
$183 total
per night
Jul 28 - Jul 29
Book a stay at this business-friendly hotel in SeaTac. Enjoy free WiFi, 2 restaurants, and breakfast (surcharge). Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
Opens in a new windowDoubleTree by Hilton Seattle Airport
SureStay Hotel by Best Western SeaTac Airport North

SureStay Hotel by Best Western SeaTac Airport North

3.5 out of 5
3000 S 176th St SeaTac WA
The price is $143 total per night from Jul 30 to Jul 31
$143 total
per night
Jul 30 - Jul 31
Book a stay at this business-friendly hotel in SeaTac. Enjoy free WiFi, free parking, and breakfast (surcharge). Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
8/10 Very Good! (2,419 reviews)
"We were placed in a room that was so far away from the elevator that it was difficult to carry my suitcase. I am an older adult, and it was really difficult. The sheets looked like they had never been pressed. Like they had been sitting in the dryer for a week. The AC worked great and it was clean, ..."

Reviewed on Jul 26, 2026

Opens in a new windowSureStay Hotel by Best Western SeaTac Airport North
Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA

Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA

3 out of 5
3100 South 192nd Street SeaTac WA
The price is $172 total per night from Aug 16 to Aug 17
$172 total
per night
Aug 16 - Aug 17
Book a stay at this business-friendly hotel in SeaTac. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
9/10 Wonderful! (6,593 reviews)
"The staff was friendly and the gym was well equiped. The breakfast and coffee was good."

Reviewed on Jul 26, 2026

Opens in a new windowCountry Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
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Coast Gateway Hotel

Coast Gateway Hotel

3.5 out of 5
18415 International Blvd SeaTac WA
The price is $172 total per night from Aug 19 to Aug 20
$172 total
per night
Aug 19 - Aug 20
Book a stay at this business-friendly hotel in SeaTac. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the restaurant in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
Opens in a new windowCoast Gateway Hotel
Quality Inn SeaTac Airport-Seattle

Quality Inn SeaTac Airport-Seattle

2.5 out of 5
2900 S 192nd St SeaTac WA
The price is $127 total per night from Aug 16 to Aug 17
$127 total
per night
Aug 16 - Aug 17
Book a stay at this business-friendly hotel in SeaTac. Enjoy free breakfast, free WiFi, and a free airport shuttle. Our guests praise the breakfast and the helpful staff in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
8/10 Very Good! (2,960 reviews)
"Great location near the airport and friendly staff. Beds were ok."

Reviewed on Jul 26, 2026

Opens in a new windowQuality Inn SeaTac Airport-Seattle
Red Roof Inn Seattle Airport - SEATAC

Red Roof Inn Seattle Airport - SEATAC

2 out of 5
16838 International Boulevard SeaTac WA
The price is $124 total per night from Aug 2 to Aug 3
$124 total
per night
Aug 2 - Aug 3
Stay at this hotel in SeaTac. Enjoy free WiFi, a free airport shuttle, and a fitness center. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
7.8/10 Good! (4,931 reviews)
"nice but a little out dated"

Reviewed on Jul 25, 2026

Opens in a new windowRed Roof Inn Seattle Airport - SEATAC
Courtyard by Marriott Seattle SeaTac Airport

Courtyard by Marriott Seattle SeaTac Airport

4 out of 5
19031 International Blvd. SeaTac WA
The price is $158 total per night from Aug 23 to Aug 24
$158 total
per night
Aug 23 - Aug 24
Book a stay at this business-friendly hotel in SeaTac. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
8.8/10 Excellent! (1,842 reviews)
"Nice and clean"

Reviewed on Jul 25, 2026

Opens in a new windowCourtyard by Marriott Seattle SeaTac Airport
La Quinta Inn & Suites by Wyndham Seattle Sea-Tac Airport

La Quinta Inn & Suites by Wyndham Seattle Sea-Tac Airport

3 out of 5
2824 South 188th St. SeaTac WA
The price is $154 total per night from Aug 2 to Aug 3
$154 total
per night
Aug 2 - Aug 3
Book a stay at this business-friendly hotel in SeaTac. Enjoy free breakfast, free WiFi, and a free airport shuttle. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
7.4/10 Good! (2,431 reviews)
"The air conditioning didn’t work the entire time we were there. When we asked to switch rooms we were told that “every room is without air right now”. We stayed three days- never fixed. It’s also super outdated and unclean in the rooms. No amenities, no beverages or snacks. Avoid this place if ..."

Reviewed on Jul 26, 2026

Opens in a new windowLa Quinta Inn & Suites by Wyndham Seattle Sea-Tac Airport
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Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Top Picks

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.