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 $248 for round trip flights and $116 for one-way flights in the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 11 - Wed, Aug 19
IAD
Washington
SEA
Seattle
$248 Roundtrip, found 13 hours ago
$248
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Tue, Aug 11 from Washington to Seattle, returning Wed, Aug 19, priced at $248 found 13 hours ago
Sat, Jun 13 - Wed, Jun 17
IAD
Washington
SEA
Seattle
$263 Roundtrip, found 7 hours ago
$263
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, Jun 13 from Washington to Seattle, returning Wed, Jun 17, priced at $263 found 7 hours ago
Tue, Aug 11 - Wed, Aug 19
IAD
Washington
SEA
Seattle
$268 Roundtrip, found 13 hours ago
$268
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Tue, Aug 11 from Washington to Seattle, returning Wed, Aug 19, priced at $268 found 13 hours ago
Fri, Jun 5 - Sat, Jun 13
IAD
Washington
SEA
Seattle
$269 Roundtrip, found 19 hours ago
$269
Roundtrip
found 19 hours ago
Select American Airlines flight, departing Fri, Jun 5 from Washington to Seattle, returning Sat, Jun 13, priced at $269 found 19 hours ago
Wed, Aug 12 - Thu, Aug 20
IAD
Washington
SEA
Seattle
$270 Roundtrip, found 13 hours ago
$270
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Wed, Aug 12 from Washington to Seattle, returning Thu, Aug 20, priced at $270 found 13 hours ago
Tue, Aug 11 - Wed, Aug 19
IAD
Washington
SEA
Seattle
$278 Roundtrip, found 13 hours ago
$278
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Tue, Aug 11 from Washington to Seattle, returning Wed, Aug 19, priced at $278 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 May 5 to May 6
$121 total
May 5 - May 6
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! (3,023 reviews)
Amazing stay

Reviewed on Apr 30, 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
$128 nightly
The price is $145 total per night from May 17 to May 18
$145 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 breakfast and the restaurant in our reviews. Popular attractions Westfield Southcenter Mall and Silver Dollar Casino are located nearby.
9.2/10 Wonderful! (7,970 reviews)
Nice hotel close to the airport and the shuttle was a convenient perk but the front desk was extremely rude and unhelpful

Reviewed on May 1, 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
$118 nightly
The price is $135 total per night from May 11 to May 12
$135 total
May 11 - May 12
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! (6,499 reviews)
The bedsing hadn't been changed in our room (my wife found crumbs in the bed before we had even touched the bed. She also found some fecal matter on and around the toilet. Our fridge looks like it was rusting. There were several spots where drinks had spilled and were not cleaned for the 3 days we ...

Reviewed on Apr 30, 2026

Opens in a new windowCountry Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
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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 May 5 to May 6
$89 total
May 5 - May 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 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! (1,300 reviews)
Yes. Just had a problem with noise so they switched our room.

Reviewed on Apr 30, 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
$70 nightly
The price is $81 total per night from May 3 to May 4
$81 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! (4,869 reviews)
Brand new mercedes shuttle. nice driver and staff. Shuttle back and forth every thirty minutes

Reviewed on Apr 30, 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
$94 nightly
The price is $107 total per night from May 6 to May 7
$107 total
May 6 - May 7
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! (2,204 reviews)
The staff was friendly. The air conditioni La ng smelt like old cigarettes. J ik

Reviewed on Apr 30, 2026

Opens in a new windowSureStay Hotel by Best Western SeaTac Airport North
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 May 3 to May 4
$86 total
May 3 - May 4
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 (1,968 reviews)
Actually, it was pretty darn good

Reviewed on Apr 30, 2026

Opens in a new windowRamada by Wyndham SeaTac Airport
Courtyard by Marriott Seattle SeaTac Airport

Courtyard by Marriott Seattle SeaTac Airport

4 out of 5
19031 International Blvd. SeaTac WA
$125 nightly
The price is $143 total per night from May 3 to May 4
$143 total
May 3 - May 4
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 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! (1,700 reviews)
Hotel was clean comfy and quite. Check in was quick and easy.

Reviewed on May 1, 2026

Opens in a new windowCourtyard by Marriott Seattle 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.