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 $255 for round trip flights and $133 for one-way flights in the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 12 - Tue, Sep 22
IAD
Washington
SEA
Seattle
$255 Roundtrip, found 3 days ago
$255
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 12 from Washington to Seattle, returning Tue, Sep 22, priced at $255 found 3 days ago
Sat, Sep 12 - Tue, Sep 22
IAD
Washington
SEA
Seattle
$265 Roundtrip, found 3 days ago
$265
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 12 from Washington to Seattle, returning Tue, Sep 22, priced at $265 found 3 days ago
Sat, Sep 12 - Tue, Sep 22
IAD
Washington
SEA
Seattle
$275 Roundtrip, found 3 days ago
$275
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 12 from Washington to Seattle, returning Tue, Sep 22, priced at $275 found 3 days ago
Sat, Sep 12 - Tue, Sep 22
IAD
Washington
SEA
Seattle
$284 Roundtrip, found 3 days ago
$284
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 12 from Washington to Seattle, returning Tue, Sep 22, priced at $284 found 3 days ago
Sat, Sep 12 - Tue, Sep 22
IAD
Washington
SEA
Seattle
$287 Roundtrip, found 3 days ago
$287
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 12 from Washington to Seattle, returning Tue, Sep 22, priced at $287 found 3 days ago
Sat, Sep 12 - Tue, Sep 22
IAD
Washington
SEA
Seattle
$290 Roundtrip, found 3 days ago
$290
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Washington to Seattle, returning Tue, Sep 22, priced at $290 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
$196 nightly
The price is $222 total per night from Jun 27 to Jun 28
$222 total
Jun 27 - Jun 28
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! (3,147 reviews)
"I had a wonderful stay here. The front desk staff were incredibly polite and welcoming from the moment I arrived. The pool and hot tub were great and a perfect way to relax. Perfect stay near the airport. Highly recommend!"

Reviewed on Jun 10, 2026

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
$127 nightly
The price is $145 total per night from Jun 23 to Jun 24
$145 total
Jun 23 - Jun 24
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! (2,299 reviews)
"Bang for your buck. Hotel is dated but rooms were clean and organized. Friendly staff."

Reviewed on Jun 10, 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
$181 nightly
The price is $206 total per night from Jul 9 to Jul 10
$206 total
Jul 9 - Jul 10
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! (6,553 reviews)
"Evel"

Reviewed on Jun 10, 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
$197 nightly
The price is $224 total per night from Jul 9 to Jul 10
$224 total
Jul 9 - Jul 10
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! (8,034 reviews)
"I felt that the hotel was outdated and not great for being considered a 3 star hotel. Did not find the bed comfy, ended up just leaving in the middle of the night."

Reviewed on Jun 10, 2026

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
$128 nightly
The price is $146 total per night from Jun 22 to Jun 23
$146 total
Jun 22 - Jun 23
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! (2,843 reviews)
"Great service and free shuttle to and from airport, clean rooms and great breakfast"

Reviewed on Jun 10, 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
$99 nightly
The price is $113 total per night from Jun 16 to Jun 17
$113 total
Jun 16 - Jun 17
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! (4,924 reviews)
"staff was very helpful"

Reviewed on Jun 10, 2026

Opens in a new windowRed Roof Inn Seattle Airport - SEATAC
Hampton Inn & Suites Seattle-Airport/28th Ave

Hampton Inn & Suites Seattle-Airport/28th Ave

2.5 out of 5
18850 28th Ave South SeaTac WA
$195 nightly
The price is $222 total per night from Jun 28 to Jun 29
$222 total
Jun 28 - Jun 29
Total with taxes and fees
Stay at this 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.
9.4/10 Exceptional! (1,415 reviews)
"The hotel was clean and the staff were very helpful and friendly ."

Reviewed on Jun 9, 2026

Opens in a new windowHampton Inn & Suites Seattle-Airport/28th Ave
Hampton Inn Seattle-Airport

Hampton Inn Seattle-Airport

2.5 out of 5
19445 International Blvd SeaTac WA
$163 nightly
The price is $186 total per night from Jul 2 to Jul 3
$186 total
Jul 2 - Jul 3
Total with taxes and fees
Book a stay at this business-friendly hotel in SeaTac. Enjoy free breakfast, free WiFi, and an outdoor pool. 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.
8.2/10 Very Good! (1,043 reviews)
"Loved it all"

Reviewed on Jun 8, 2026

Opens in a new windowHampton Inn Seattle-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.