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 $270 for round trip flights and $127 for one-way flights in the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jun 29 - Tue, Jul 7
IAD
Washington
SEA
Seattle
$270 Roundtrip, found 1 day ago
$270
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Jun 29 from Washington to Seattle, returning Tue, Jul 7, priced at $270 found 1 day ago
Tue, Sep 8 - Fri, Sep 11
IAD
Washington
SEA
Seattle
$275 Roundtrip, found 6 days ago
$275
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Sep 8 from Washington to Seattle, returning Fri, Sep 11, priced at $275 found 6 days ago
Tue, Sep 8 - Fri, Sep 11
IAD
Washington
SEA
Seattle
$275 Roundtrip, found 6 days ago
$275
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 8 from Washington to Seattle, returning Fri, Sep 11, priced at $275 found 6 days ago
Tue, Jun 9 - Fri, Jun 12
IAD
Washington
SEA
Seattle
$290 Roundtrip, found 7 hours ago
$290
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Tue, Jun 9 from Washington to Seattle, returning Fri, Jun 12, priced at $290 found 7 hours ago
Tue, Jun 9 - Fri, Jun 12
IAD
Washington
SEA
Seattle
$294 Roundtrip, found 7 hours ago
$294
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Tue, Jun 9 from Washington to Seattle, returning Fri, Jun 12, priced at $294 found 7 hours ago
Tue, Sep 8 - Fri, Sep 11
IAD
Washington
SEA
Seattle
$295 Roundtrip, found 6 days ago
$295
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Sep 8 from Washington to Seattle, returning Fri, Sep 11, priced at $295 found 6 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
$106 nightly
The price is $121 total per night from May 17 to May 18
$121 total
May 17 - May 18
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! (3,010 reviews)
Clean room. Comfortable staff. Great dining choices in the hotel.

Reviewed on Apr 25, 2026

Opens in a new windowDoubleTree by Hilton Seattle Airport
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
$110 nightly
The price is $125 total per night from May 3 to May 4
$125 total
May 3 - May 4
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! (6,515 reviews)
The staff checking me in went above and beyond to provide the best customer experience. Her professionalism and attention to detail were exceptional. It was so refreshing to encounter someone who genuinely cares about their job!

Reviewed on Apr 25, 2026

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

Coast Gateway Hotel

3.5 out of 5
18415 International Blvd SeaTac WA
$132 nightly
The price is $150 total per night from Apr 27 to Apr 28
$150 total
Apr 27 - Apr 28
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! (7,966 reviews)
Airport shuttle Staff was welcoming

Reviewed on Apr 26, 2026

Opens in a new windowCoast Gateway Hotel
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Days Inn by Wyndham Seatac Airport

Days Inn by Wyndham Seatac Airport

2 out of 5
19015 International Blvd SeaTac WA
$79 nightly
The price is $89 total per night from Apr 29 to Apr 30
$89 total
Apr 29 - Apr 30
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 helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
7.6/10 Good! (1,296 reviews)
In a different subject. 1. hotels.com has no email address to contact their office. 2. A reply from car insurance that was booked via hotels.com "Thank you for your email. If you decide to cancel this plan during your free look period and you have not left for your covered trip or filed a claim, ...

Reviewed on Apr 22, 2026

Opens in a new windowDays Inn by Wyndham Seatac Airport
Red Roof Inn Seattle Airport - SEATAC

Red Roof Inn Seattle Airport - SEATAC

2 out of 5
16838 International Boulevard SeaTac WA
$63 nightly
The price is $73 total per night from May 3 to May 4
$73 total
May 3 - May 4
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! (4,872 reviews)
The room we stayed in had a strong smell, and there was a parking fee.

Reviewed on Apr 25, 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
$82 nightly
The price is $94 total per night from Apr 29 to Apr 30
$94 total
Apr 29 - Apr 30
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! (2,195 reviews)
Great cozy bed. Nice staff

Reviewed on Apr 25, 2026

Opens in a new windowSureStay Hotel by Best Western SeaTac Airport North
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
$93 nightly
The price is $106 total per night from May 17 to May 18
$106 total
May 17 - May 18
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 helpful staff and the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
7.2/10 Good! (2,505 reviews)
Decent breakfast. Clean room. Just loud due to location.

Reviewed on Apr 25, 2026

Opens in a new windowLa Quinta Inn & Suites by Wyndham Seattle Sea-Tac Airport
Ramada by Wyndham SeaTac Airport

Ramada by Wyndham SeaTac Airport

2.5 out of 5
16720 International Blvd SeaTac WA
$75 nightly
The price is $86 total per night from Apr 27 to Apr 28
$86 total
Apr 27 - Apr 28
Total with taxes and fees
Book a stay at this business-friendly hotel in SeaTac. Enjoy free WiFi, free parking, and a free airport shuttle. Our guests praise the clean rooms in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
6.8/10 (1,963 reviews)
Parking was easy but housekeeping was not changing sheets on a daily basis

Reviewed on Apr 22, 2026

Opens in a new windowRamada by Wyndham SeaTac 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.