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 $181 for round trip flights and $95 for one-way flights in the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 1 - Sat, May 9
IAD
Washington
SEA
Seattle
$181 Roundtrip, found 23 hours ago
$181
Roundtrip
found 23 hours ago
Select Southwest Airlines flight, departing Fri, May 1 from Washington to Seattle, returning Sat, May 9, priced at $181 found 23 hours ago
Fri, May 1 - Sat, May 9
IAD
Washington
SEA
Seattle
$185 Roundtrip, found 23 hours ago
$185
Roundtrip
found 23 hours ago
Select United flight, departing Fri, May 1 from Washington to Seattle, returning Sat, May 9, priced at $185 found 23 hours ago
Wed, Apr 15 - Sun, Apr 19
IAD
Washington
SEA
Seattle
$208 Roundtrip, found 7 hours ago
$208
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Wed, Apr 15 from Washington to Seattle, returning Sun, Apr 19, priced at $208 found 7 hours ago
Wed, Apr 8 - Tue, Apr 14
IAD
Washington
SEA
Seattle
$209 Roundtrip, found 13 hours ago
$209
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Apr 8 from Washington to Seattle, returning Tue, Apr 14, priced at $209 found 13 hours ago
Fri, May 1 - Sat, May 9
IAD
Washington
SEA
Seattle
$215 Roundtrip, found 23 hours ago
$215
Roundtrip
found 23 hours ago
Select United flight, departing Fri, May 1 from Washington to Seattle, returning Sat, May 9, priced at $215 found 23 hours ago
Wed, Apr 8 - Tue, Apr 14
IAD
Washington
SEA
Seattle
$223 Roundtrip, found 13 hours ago
$223
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Apr 8 from Washington to Seattle, returning Tue, Apr 14, priced at $223 found 13 hours 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
$106 nightly
The price is $121 total per night from Mar 15 to Mar 16
$121 total
Mar 15 - Mar 16
Total with taxes and fees
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.
7.8/10 Good! (2,927 reviews)
Good location

Reviewed on Mar 10, 2026

Opens in a new windowDoubleTree by Hilton Seattle Airport
Coast Gateway Hotel

Coast Gateway Hotel

3.5 out of 5
18415 International Blvd SeaTac WA
$121 nightly
The price is $138 total per night from Mar 19 to Mar 20
$138 total
Mar 19 - Mar 20
Total with taxes and fees
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.
9.2/10 Wonderful! (7,881 reviews)
Very friendly staff. Shuttle service to the airport was extremely convenient.

Reviewed on Mar 11, 2026

Opens in a new windowCoast Gateway Hotel
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
$101 nightly
The price is $116 total per night from Apr 5 to Apr 6
$116 total
Apr 5 - Apr 6
Total with taxes and fees
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! (6,610 reviews)
No

Reviewed on Mar 12, 2026

Opens in a new windowCountry Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
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Hilton Seattle Airport & Conference Center

Hilton Seattle Airport & Conference Center

4 out of 5
17620 International Blvd SeaTac WA
$130 nightly
The price is $149 total per night from Mar 14 to Mar 15
$149 total
Mar 14 - Mar 15
Total with taxes and fees
Stay at this hotel in SeaTac. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
8.2/10 Very Good! (1,223 reviews)
Should be better, the rooms were old and needs upgrade.

Reviewed on Mar 11, 2026

Opens in a new windowHilton Seattle Airport & Conference Center
Red Roof Inn Seattle Airport - SEATAC

Red Roof Inn Seattle Airport - SEATAC

2 out of 5
16838 International Boulevard SeaTac WA
$62 nightly
The price is $72 total per night from Mar 18 to Mar 19
$72 total
Mar 18 - Mar 19
Total with taxes and fees
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! (4,837 reviews)
Shuttle was easy to find however it took a long time for it to arrive at the airport to pick us up. And it wasn’t because of traffic. I saw other companies and their drivers multiple times. The property was well maintained. I was not happy about the cost of parking in the lot. For guests it should ...

Reviewed on Mar 11, 2026

Opens in a new windowRed Roof Inn Seattle Airport - SEATAC
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
$75 nightly
The price is $87 total per night from Mar 17 to Mar 18
$87 total
Mar 17 - Mar 18
Total with taxes and fees
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! (2,061 reviews)
My second pre-airport stay was very nice. The staff are friendly and efficient with my check in and check out. My room was very clean. And the shuttle driver was also excellent. This hotel gives good value for cost and proximity to the airport.

Reviewed on Mar 11, 2026

Opens in a new windowSureStay Hotel by Best Western SeaTac Airport North
Radisson Hotel Seattle Airport

Radisson Hotel Seattle Airport

4 out of 5
18118 International Blvd SeaTac WA
$151 nightly
The price is $172 total per night from Mar 20 to Mar 21
$172 total
Mar 20 - Mar 21
Total with taxes and fees
Book a stay at this business-friendly hotel in SeaTac. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the restaurant and the helpful staff in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
8.8/10 Excellent! (1,830 reviews)
The hotel is beautiful and clean. The staff friendly and inviting. I really like that they had an area for DoorDash food orders at the front. It was welcome and convenient.

Reviewed on Mar 8, 2026

Opens in a new windowRadisson Hotel Seattle Airport
Comfort Inn & Suites Sea-Tac Airport

Comfort Inn & Suites Sea-Tac Airport

3 out of 5
19333 International Blvd SeaTac WA
$118 nightly
The price is $135 total per night from Mar 14 to Mar 15
$135 total
Mar 14 - Mar 15
Total with taxes and fees
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.
7.6/10 Good! (1,473 reviews)
Handy to Seatac Suttle was on time

Reviewed on Mar 6, 2026

Opens in a new windowComfort Inn & Suites 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.