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 $230 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, Jun 9 - Sat, Jun 13
IAD
Washington
SEA
Seattle
$230 Roundtrip, found 1 day ago
$230
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Jun 9 from Washington to Seattle, returning Sat, Jun 13, priced at $230 found 1 day ago
Tue, Aug 11 - Wed, Aug 19
IAD
Washington
SEA
Seattle
$248 Roundtrip, found 2 days ago
$248
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 11 from Washington to Seattle, returning Wed, Aug 19, priced at $248 found 2 days ago
Wed, Jun 10 - Sat, Jun 13
IAD
Washington
SEA
Seattle
$250 Roundtrip, found 1 day ago
$250
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Jun 10 from Washington to Seattle, returning Sat, Jun 13, priced at $250 found 1 day ago
Tue, Aug 11 - Wed, Aug 19
IAD
Washington
SEA
Seattle
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 11 from Washington to Seattle, returning Wed, Aug 19, priced at $263 found 2 days ago
Tue, Aug 11 - Wed, Aug 19
IAD
Washington
SEA
Seattle
$268 Roundtrip, found 2 days ago
$268
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Aug 11 from Washington to Seattle, returning Wed, Aug 19, priced at $268 found 2 days ago
Wed, Aug 12 - Thu, Aug 20
IAD
Washington
SEA
Seattle
$270 Roundtrip, found 3 days ago
$270
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Aug 12 from Washington to Seattle, returning Thu, Aug 20, priced at $270 found 3 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 6 to May 7
$121 total
May 6 - May 7
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! (3,029 reviews)
Great staff, easy check in and check out, great shuttle service

Reviewed on May 3, 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
$133 nightly
The price is $152 total per night from May 24 to May 25
$152 total
May 24 - May 25
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! (7,987 reviews)
Very nice staff, great location and breakfast was nice. I found the bed too soft but I am sure many people like that.

Reviewed on May 3, 2026

Opens in a new windowCoast Gateway Hotel
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
$89 nightly
The price is $102 total per night from May 7 to May 8
$102 total
May 7 - May 8
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! (2,212 reviews)
Very convenient to have the lite rail and airport within walking distance!

Reviewed on May 3, 2026

Opens in a new windowSureStay Hotel by Best Western SeaTac Airport North
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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 May 10 to May 11
$149 total
May 10 - May 11
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! (1,281 reviews)
Perfect to walk in the Skybridge to Seatac for morning fight.

Reviewed on May 1, 2026

Opens in a new windowHilton Seattle Airport & Conference Center
Days Inn by Wyndham Seatac Airport

Days Inn by Wyndham Seatac Airport

2 out of 5
19015 International Blvd SeaTac WA
$75 nightly
The price is $84 total per night from May 5 to May 6
$84 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! (1,303 reviews)
Room was amazing, clean and quiet

Reviewed on May 2, 2026

Opens in a new windowDays Inn by Wyndham Seatac 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
$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! (6,521 reviews)
“My bedsheets are very dirty! I asked them to change them, but they didn’t help me at all!”

Reviewed on May 3, 2026

Opens in a new windowCountry Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
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 10 to May 11
$81 total
May 10 - May 11
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! (4,877 reviews)
The Red Roof Inn at Seattle Airport was awesome. Our room was very clean, the shower actually drained when showering instead of standing in a foot of water. How many times are you at a hotel and the shower drain can’t keep up. The shuttle to the airport was very convenient.

Reviewed on May 3, 2026

Opens in a new windowRed Roof Inn Seattle Airport - SEATAC
Quality Inn SeaTac Airport-Seattle

Quality Inn SeaTac Airport-Seattle

2.5 out of 5
2900 S 192nd St SeaTac WA
$76 nightly
The price is $87 total per night from May 24 to May 25
$87 total
May 24 - May 25
Total with taxes and fees
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! (2,740 reviews)
I appreciated the easy shuttle service and was pleasantly surprised by the extent of the complementary breakfast which included scrambled eggs, sausage, and rice. Excellent and welcome options.

Reviewed on May 3, 2026

Opens in a new windowQuality Inn SeaTac Airport-Seattle
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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.