18+ Hotels in SeaTac, WA
Where You Can Check In at 18, 19 or 20

9 hotels in SeaTac, WA list a minimum check-in age of 18 on Hotels.com, so travelers aged 18, 19 and 20 can check in. Observed starting prices begin at $72 at Rodeway Inn, with a median of $78 per night. Cedarbrook Lodge has the best guest rating, 9.6/10 from 1,216 reviews. Of these, 4 have a pool and 5 accept pets. Places mentioned near these hotels include Angle Lake Park, Angle Lake and The Roadhouse. Hotel data checked in November 2026.

Policies can change: confirm the minimum check-in age with the hotel before booking.

hotels with 18+ check-in
9
lowest starting price, Rodeway Inn
$72
median starting price per night
$78
best rating, Cedarbrook Lodge
9.6/10
accept pets
5
have a pool
4

Dates are passed to Hotels.com to check availability and current prices.

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Showing 9 of 9 hotels.

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Motel 6 Seattle, WA - South allows check-in for 18 year-old guests

Motel 6 Seattle, WA - South

8.2/10 1,884 reviews

2.0-star hotel

20651 Military Rd S, SeaTac, WA 98198, USA

Angle Lake · 1.4 km · 16 min walk

  • Pool
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

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Parking: Wheelchair-accessible parking · 1 on-site accessible parking spaces · Wheelchair-accessible van parking

Pets: Pets stay free (2 total)

Nearby

  • Angle Lake — 1.4 km, 16 min walk
  • The Roadhouse — 1.7 km, 19 min walk
  • Angle Lake Park — 2.0 km, 4 min drive

From USD 78.00

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Skyway Inn SeaTac allows check-in for 18 year-old guests

Skyway Inn SeaTac

7.4/10 1,016 reviews

2.0-star hotel

20045 International Blvd, SeaTac, WA 98198, USA

The Roadhouse · 0.3 km · 3 min walk

  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

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Pets: Pets not allowed

Nearby

  • The Roadhouse — 0.3 km, 3 min walk
  • Angle Lake — 0.8 km, 9 min walk
  • Angle Lake Park — 0.9 km, 10 min walk

From USD 77.00

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Motel 6 Seattle, WA - Sea-Tac Airport South allows check-in for 18 year-old guests

Motel 6 Seattle, WA - Sea-Tac Airport South

6.8/10 1,089 reviews

2.0-star hotel

18900 47th Ave S, SeaTac, WA 98188, USA

Valley Ridge Park · 0.3 km · 3 min walk

  • Pool
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

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Parking: Wheelchair-accessible parking · 5 on-site accessible parking spaces · Wheelchair-accessible van parking

Pets: Pets stay free (2 total)

Nearby

  • Valley Ridge Park — 0.3 km, 3 min walk
  • Angle Lake — 0.6 km, 6 min walk
  • Angle Lake Park — 1.7 km, 4 min drive

From USD 78.00

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Rodeway Inn allows check-in for 18 year-old guests

Rodeway Inn

5.8/10 1,009 reviews

2.0-star hotel

2930 S 176th St, SeaTac, WA 98188, USA

Angle Lake Park · 2.3 km · 4 min drive

  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

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Pets: Pets not allowed

Nearby

  • Angle Lake Park — 2.3 km, 4 min drive
  • Valley Ridge Park — 2.3 km, 5 min drive
  • Westfield Southcenter Mall — 4.6 km, 6 min drive

From USD 72.00

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Sea-Tac Crest Motor Inn allows check-in for 18 year-old guests

Sea-Tac Crest Motor Inn

4.8/10 428 reviews

2.0-star hotel

18845 Pacific Hwy South, SeaTac, WA 98188, USA

Angle Lake Park · 0.7 km · 7 min walk

  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

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Pets: Pets not allowed

Nearby

  • Angle Lake Park — 0.7 km, 7 min walk
  • Angle Lake — 0.9 km, 10 min walk
  • The Roadhouse — 1.5 km, 18 min walk

From USD 76.00

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Cedarbrook Lodge allows check-in for 18 year-old guests

Cedarbrook Lodge

9.6/10 1,216 reviews Highly rated

4.0-star hotel

18525 36th Ave S., SeaTac, WA 98188, USA

Angle Lake · 1.0 km · 12 min walk

  • Fitness center
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

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Parking: Wheelchair-accessible parking

Pets: Pets allowed (dogs only, 1 total, up to 50 lbs per pet)*

Nearby

  • Angle Lake — 1.0 km, 12 min walk
  • Valley Ridge Park — 1.4 km, 16 min walk
  • Angle Lake Park — 1.5 km, 18 min walk

From USD 220.00

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Coast Gateway Hotel allows check-in for 18 year-old guests

Coast Gateway Hotel

9.2/10 7,841 reviews Highly rated

3.5-star hotel

18415 International Blvd, SeaTac, WA 98188, USA

Angle Lake Park · 1.3 km · 15 min walk

  • Fitness center
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

Show more details

Parking: Wheelchair-accessible parking · 4 on-site accessible parking spaces · Wheelchair-accessible van parking

Pets: Pets allowed (dogs and cats only, 2 total)*

Nearby

  • Angle Lake Park — 1.3 km, 15 min walk
  • Angle Lake — 1.5 km, 18 min walk
  • The Roadhouse — 1.7 km, 2 min drive

From USD 154.00

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Radisson Hotel Seattle Airport allows check-in for 18 year-old guests

Radisson Hotel Seattle Airport

8.8/10 1,918 reviews Highly rated

4.0-star hotel

18118 International Blvd, SeaTac, WA 98188, USA

Angle Lake Park · 1.5 km · 18 min walk

  • Pool
  • Fitness center
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

Show more details

Parking: Wheelchair-accessible parking · 6 on-site accessible parking spaces · Wheelchair-accessible van parking

Pets: Pets allowed (dogs only, 1 total, up to 75 lbs per pet)*

Nearby

  • Angle Lake Park — 1.5 km, 18 min walk
  • Angle Lake — 1.3 km, 2 min drive
  • The Roadhouse — 2.0 km, 3 min drive

From USD 202.00

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Best Western Seattle Airport Hotel allows check-in for 18 year-old guests

Best Western Seattle Airport Hotel

8.6/10 3,415 reviews Highly rated

2.5-star hotel

20717 International Blvd, SeaTac, WA 98198, USA

The Roadhouse · 0.9 km · 10 min walk

  • Pool
  • Fitness center
  • Free WiFi
  • Air conditioning

Minimum check-in age: 18

Show more details

Parking: Wheelchair-accessible parking · Wheelchair-accessible van parking

Pets: Pets not allowed

Nearby

  • The Roadhouse — 0.9 km, 10 min walk
  • Angle Lake — 1.4 km, 16 min walk
  • Angle Lake Park — 1.5 km, 18 min walk

From USD 118.00

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Nearby Cities With 18+ Hotels

Des Moines 4 mi · 2 hotels
Renton 6 mi · 3 hotels
Kent 6 mi · 2 hotels
Seattle 12 mi · 34 hotels
Bellevue 12 mi · 6 hotels
Issaquah 14 mi · 2 hotels
Fife 15 mi · 3 hotels
Tacoma 16 mi · 6 hotels
Redmond 18 mi · 3 hotels
Puyallup 18 mi · 2 hotels
Bremerton 20 mi · 3 hotels
Lakewood 22 mi · 2 hotels
Kennewick 171 mi · 5 hotels
Spokane 227 mi · 18 hotels

See all Washington cities with 18+ hotels

SeaTac Hotel Check-In FAQ

Can you check into a hotel in SeaTac at 18?

Yes. 9 hotels in SeaTac list a minimum check-in age of 18 on Hotels.com. Policies can change, so confirm with the property before booking and bring a government-issued photo ID.

Can I check in without a credit card in SeaTac?

Often, yes. Of the 9 hotels listed here, 3 accept debit cards and 5 accept cash, according to Hotels.com, including Cedarbrook Lodge, Motel 6 Seattle, WA - South and Skyway Inn SeaTac. Most hotels still hold a deposit for incidentals at check-in, so call ahead to confirm they will take it without a credit card.

What time is check-in at 18+ hotels in SeaTac?

Check-in starts between 2 PM and 4 PM at the hotels listed here, most often at 3 PM (6 of 9). Check-out is usually at 11 AM.

Which 18+ hotel is closest to Angle Lake Park?

Sea-Tac Crest Motor Inn is the closest of the hotels listed here, 0.4 mi away, followed by Skyway Inn SeaTac (0.6 mi) and Coast Gateway Hotel (0.8 mi).

What is the cheapest hotel in SeaTac for 18-year-olds?

Rodeway Inn had the lowest observed starting price, from $72 per night when we checked in November 2026, against a median of $78 for the 9 hotels with a listed price. Prices change with dates: select your dates to see the current price on Hotels.com.